MSN

gene
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Summary

MSN (moesin, HGNC:7373) is a protein-coding gene on chromosome Xq12, encoding Moesin (P26038). Ezrin-radixin-moesin (ERM) family protein that connects the actin cytoskeleton to the plasma membrane and thereby regulates the structure and function of specific domains of the cell cortex.

Moesin (for membrane-organizing extension spike protein) is a member of the ERM family which includes ezrin and radixin. ERM proteins appear to function as cross-linkers between plasma membranes and actin-based cytoskeletons. Moesin is localized to filopodia and other membranous protrusions that are important for cell-cell recognition and signaling and for cell movement.

Source: NCBI Gene 4478 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): combined immunodeficiency due to moesin deficiency (Definitive, ClinGen)
  • GWAS associations: 1
  • Clinical variants (ClinVar): 349 total — 12 pathogenic, 6 likely-pathogenic
  • Phenotypes (HPO): 7
  • Druggable target: yes
  • Cancer driver (intOGen): loss-of-function (tumor-suppressor-like) across 4 cancer types
  • MANE Select transcript: NM_002444

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:7373
Approved symbolMSN
Namemoesin
LocationXq12
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000147065
Ensembl biotypeprotein_coding
OMIM309845
Entrez4478

Gene structure

Transcript identifiers

Ensembl transcripts: 21 — 10 protein_coding, 5 protein_coding_CDS_not_defined, 5 retained_intron, 1 nonsense_mediated_decay

ENST00000360270, ENST00000429601, ENST00000439474, ENST00000447323, ENST00000609205, ENST00000609672, ENST00000697133, ENST00000697134, ENST00000697135, ENST00000697136, ENST00000697137, ENST00000697138, ENST00000697139, ENST00000697140, ENST00000697141, ENST00000697142, ENST00000885865, ENST00000915048, ENST00000915049, ENST00000943362, ENST00000943363

RefSeq mRNA: 1 — MANE Select: NM_002444 NM_002444

CCDS: CCDS14382

Canonical transcript exons

ENST00000360270 — 13 exons

ExonStartEnd
ENSE000009785356572781465727909
ENSE000009785366572943865729712
ENSE000009785376573110765731190
ENSE000009785386573183865731984
ENSE000009785396573318465733280
ENSE000010220496573679565736925
ENSE000017077356573526765735430
ENSE000034967996573897065739194
ENSE000035770136573852565738617
ENSE000035961036573717865737338
ENSE000039697046566765465667853
ENSE000039697096571681865716901
ENSE000039697286573972965741931

Expression profiles

Bgee: expression breadth ubiquitous, 293 present calls, max score 99.55.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 24.3482 / max 290.9508, expressed in 1690 samples.

FANTOM5 promoters (8 alternative TSS)

Promoter IDTPM avgSamples expressed
19653812.89731629
1965365.36591584
1965393.53561383
1965331.4178415
1965340.512182
1965370.3335145
1965400.2455125
1965410.040511

Top tissues by expression

295 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
lower lobe of lungUBERON:000894999.55gold quality
monocyteCL:000057699.40gold quality
leukocyteCL:000073899.40gold quality
mononuclear cellCL:000084299.39gold quality
granulocyteCL:000009499.38gold quality
synovial jointUBERON:000221799.36gold quality
saphenous veinUBERON:000731899.23gold quality
layer of synovial tissueUBERON:000761699.17gold quality
right lungUBERON:000216799.15gold quality
vermiform appendixUBERON:000115499.13gold quality
blood vessel layerUBERON:000479799.13gold quality
lungUBERON:000204899.11gold quality
smooth muscle tissueUBERON:000113599.09gold quality
upper lobe of lungUBERON:000894899.09gold quality
bloodUBERON:000017899.05gold quality
caecumUBERON:000115399.05gold quality
upper lobe of left lungUBERON:000895299.05gold quality
superficial temporal arteryUBERON:000161499.01gold quality
right coronary arteryUBERON:000162598.98gold quality
lymph nodeUBERON:000002998.96gold quality
thymusUBERON:000237098.93gold quality
descending thoracic aortaUBERON:000234598.92gold quality
trabecular bone tissueUBERON:000248398.92gold quality
thoracic aortaUBERON:000151598.89gold quality
ascending aortaUBERON:000149698.88gold quality
aortaUBERON:000094798.86gold quality
popliteal arteryUBERON:000225098.84gold quality
tibial arteryUBERON:000761098.84gold quality
deciduaUBERON:000245098.80gold quality
penisUBERON:000098998.75gold quality

Single-cell (SCXA)

Detected in 13 experiment(s), a significant marker in 11.

ExperimentMarker?Max mean expression
E-MTAB-8142yes151.59
E-CURD-122yes40.59
E-HCAD-10yes32.09
E-CURD-112yes19.64
E-GEOD-93593yes13.94
E-MTAB-9388yes12.20
E-GEOD-81547yes8.00
E-GEOD-83139yes7.34
E-ENAD-27yes6.35
E-MTAB-5061yes5.83
E-GEOD-70580no1221.31
E-MTAB-6819no350.76
E-ANND-3no0.00

Regulation

Is transcription factor: yes

Downstream targets (CollecTRI)

1 targets.

TargetRegulation
ICAM1Activation

Upstream regulators (CollecTRI, top): MYC, ROCK2

miRNA regulators (miRDB)

174 targeting MSN, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-200B-3P100.0073.312693
HSA-MIR-200C-3P100.0073.352685
HSA-MIR-429100.0073.442698
HSA-MIR-3064-3P100.0070.091254
HSA-MIR-513A-5P100.0069.772465
HSA-MIR-548AW99.9972.573559
HSA-MIR-450099.9972.722367
HSA-MIR-318599.9968.121959
HSA-MIR-10401-5P99.9965.79948
HSA-MIR-513B-5P99.9969.962150
HSA-LET-7A-5P99.9872.291790
HSA-LET-7B-5P99.9872.311790
HSA-LET-7C-5P99.9872.291790
HSA-LET-7E-5P99.9872.291790
HSA-LET-7F-5P99.9872.561784
HSA-LET-7G-5P99.9872.371784
HSA-LET-7I-5P99.9872.371788
HSA-MIR-98-5P99.9872.331787
HSA-MIR-27A-3P99.9872.132955
HSA-MIR-27B-3P99.9872.132955
HSA-MIR-998599.9872.112939
HSA-MIR-1468-3P99.9672.743797
HSA-LET-7D-5P99.9671.761632
HSA-MIR-445899.9671.641650
HSA-MIR-590-3P99.9674.346478
HSA-MIR-551B-5P99.9671.283493
HSA-MIR-6778-3P99.9667.292693
HSA-MIR-96-5P99.9572.802140
HSA-MIR-55999.9572.283609
HSA-MIR-548AB99.9571.313488

Literature-anchored findings (GeneRIF, showing 40)

  • amino-terminal domains of the ezrin, radixin, and moesin (ERM) proteins bind advanced glycation end products and have a role in diabetes (PMID:12734202)
  • PECAM-1 co-localized with moesin at the cell periphery and in filopodia of glass-activated platelets; moesin may play a role in platelet adhesion, linking PECAM-1 with the actin cytoskeleton (PMID:12850829)
  • moesin has a role in lymph node metastasis of oral squamous cell carcinoma (PMID:14760079)
  • important role in lipopolysaccharide-induced TNF-alpha production, particularly in lipopolysaccharide-mediated signal transduction (PMID:15039356)
  • ezrin/radixin/moesin proteins are recruited by NHE1 Na+/H+ exchanger and have roles in regulating Akt-dependent cell survival (PMID:15096511)
  • All three ERM family members can localise to the nucleus; a specific nuclear localisation sequence, which is conserved and functional in all ERM family members, is identified, implying specific regulated nuclear import. (PMID:15149851)
  • there is nucleotide variation at Msn and Alas2 on the X chromosome (PMID:15166166)
  • results suggest that ezrin-radixin-moesin proteins are required for microvillar positioning of L-selectin and that this is important both for leukocyte tethering and L-selectin shedding (PMID:15178693)
  • Ezrin, radixin and moesin are ADP-ribosylated by Pseudomonas aeruginosa ExoS (PMID:15252013)
  • Expression of ExoS in HeLa cells led to a loss of phosphorylation of Ezrin/radixin/moesin proteins that was dependent upon the expression of ADP-ribosyltransferase activity. (PMID:16889625)
  • early phagosome maturation was shown to depend on activation of Rho acting through Rho kinase on ezrin-radixin-moesin proteins (PMID:16908865)
  • B-cell response to moesin, possibly derived from hematopoietic cells, frequently occurs in patients with acquired aplastic anemia (PMID:17110458)
  • moesin negatively regulates stable microtubule networks and is a natural determinant of cellular sensitivity to retroviral infection (PMID:17170707)
  • increased CD44, ezrin, radixin, and moesin phosphorylation represents a key molecular abnormality that guides T cell adhesion and migration in SLE patients. (PMID:17237445)
  • MSN was differentially expressed in sclerotic hippocampi compared to non-sclerotic ones. (PMID:17515952)
  • Moesin protein expression is a basal marker in breast tumors. Moesin expression was nearly an independent prognostic marker of poor outcome (PMID:17594689)
  • the ezrin, radixin, and moesin proteins function as positive regulators of infection by X4-tropic HIV-1 (PMID:18295815)
  • Phosphorylation of ezrin/moesin by ROCK is involved in the early steps of apoptotic signaling following Fas receptor triggering and regulates apoptosis induction in Jurkat cells. (PMID:18941185)
  • functional alterations of moesin may be involved in pathological disorders associated with clathrin-mediated internalization or receptor recycling (PMID:19047065)
  • Results suggest that activated moesin promotes F-actin redistribution and CD4-CXCR4 clustering and is also required for efficient X4-tropic HIV-1 infection in permissive lymphocytes. (PMID:19066282)
  • No aspects of T cell receptor signaling uniquely require transgenic ezrin or moesin; instead, T cell activation appears to depend on net ezrin, radixin, and moesin (ERM) protein expression, while ezrin and moesin function together. (PMID:19124745)
  • In Vitro and in Vivo Characterization of Molecular Interactions between Calmodulin, Ezrin/Radixin/Moesin, and L-selectin (PMID:19129194)
  • c14orf166 was identified asa novel metastasis-associated protein, and the roles of radixin, moesin and c14orf166 in pancreatic cancer metastasis deserve further investigations. (PMID:19152423)
  • These studies identify a new ERM kinase of importance in lymphocytes and confirm the role of ezrin-radixin-moesin phosphorylation in regulating cell shape and motility. (PMID:19255442)
  • Moesin is a phenotypic marker for anaplastic carcinoma. (PMID:19432821)
  • expression of moesin delays senescence of human dermal microvascular endothelial cells (PMID:19555429)
  • Moesin is crucial for invasion by melanoma cells in 3D matrices and in early lung colonization. (PMID:19723803)
  • Data show that stimulation of the NK cell-expressed tetraspanin CD81 induces phosphorylation of ezrin/radixin/moesin proteins and leads to NK cell polarization thereby facilitating NK cell migration toward various chemokines/cytokines. (PMID:19830727)
  • Ezrin, radixin, and moesin proteins are physiological substrates of the kinase activity of leucine-rich repeat kinase 2 (LRRK2). (PMID:19890007)
  • Data show that TNF-alpha induces the formation of fibrotic foci by cultured retinal pigment epithelial cells through activation of transforming growth factor-TGF-beta signaling in a manner dependent on hyaluronan-CD44-moesin interaction. (PMID:19965872)
  • Findings suggest that there is a functional association between moesin expression and cellular senescence. (PMID:20376899)
  • Results suggest that VEGF-C promoted cervical cancer metastasis by upregulation and activation of moesin protein through RhoA/ROCK-2 pathway. (PMID:20429915)
  • important role in the innate immune response and toll-like receptor 4-mediated pattern recognition in periodontal disease (PMID:20546116)
  • Results demonstrate a new regulatory mechanism of ezrin-radixin-moesin phosphorylation by sphingolipids with opposing actions of ceramide and sphingosine 1-phosphate. (PMID:20679347)
  • Data suggest that ezrin-radixin-moesin proteins are involved in the spatial regulation of Epac1 and cooperate with cAMP- and Rap-mediated signaling to regulate adhesion to the extracellular matrix. (PMID:20855527)
  • This study provides the novel evidence that increased phosphorylation of Ezrin/radixin/moesin proteins may contribute to proliferation of rheumatoid fibroblast-like synoviocytes. (PMID:21278069)
  • Dysregulation of the ezrin/radixin/moesin-RAGE complex might be an important step in rearrangement of the actin cytoskeleton during proinflammatory cytokine-induced epithelial-mesenchymal transition of human alveolar epithelial cells. (PMID:21278261)
  • ezrin, radixin and moesin play similar roles in the tumor cell metastatic potential and their roles of upregulating the expression of E-cadherin may be important in tumor progression (PMID:21352885)
  • Knockdown of ERM family member moesin in host cells increases HIV type 1 replication. (PMID:21486194)
  • PDZD8 is a novel moesin-interacting protein that suppresses infection by herpes simplex virus type 1. (PMID:21549406)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
mus_musculusMsnENSMUSG00000031207
rattus_norvegicusMsnENSRNOG00000030118
drosophila_melanogasterMoeFBGN0011661

Paralogs (6): EZR (ENSG00000092820), FRMD4B (ENSG00000114541), ERMN (ENSG00000136541), RDX (ENSG00000137710), FRMD4A (ENSG00000151474), NF2 (ENSG00000186575)

Protein

Protein identifiers

MoesinP26038 (reviewed: P26038)

Alternative names: Membrane-organizing extension spike protein

All UniProt accessions (5): P26038, A0A8V8TKQ0, A0A8V8TKR9, V9GZ54, V9HWC0

UniProt curated annotations — full annotation on UniProt →

Function. Ezrin-radixin-moesin (ERM) family protein that connects the actin cytoskeleton to the plasma membrane and thereby regulates the structure and function of specific domains of the cell cortex. Tethers actin filaments by oscillating between a resting and an activated state providing transient interactions between moesin and the actin cytoskeleton. Once phosphorylated on its C-terminal threonine, moesin is activated leading to interaction with F-actin and cytoskeletal rearrangement. These rearrangements regulate many cellular processes, including cell shape determination, membrane transport, and signal transduction. The role of moesin is particularly important in immunity acting on both T and B-cells homeostasis and self-tolerance, regulating lymphocyte egress from lymphoid organs. Modulates phagolysosomal biogenesis in macrophages. Also participates in immunologic synapse formation.

Subunit / interactions. In resting T-cells, part of a PAG1-NHERF1-MSN complex which is disrupted upon TCR activation. Interacts with NHERF1. Interacts with PPP1R16B. Interacts with SELPLG and SYK; these interactions mediate the activation of SYK by SELPLG. Interacts with PDPN (via cytoplasmic domain); this interaction activates RHOA and promotes epithelial-mesenchymal transition. Interacts with SPN/CD43 cytoplasmic tail. Interacts with CD44. Interacts with ICAM2. Interacts with ICAM3 (via C-terminus). Interacts with PDZD8. Interacts with F-actin. Interacts with CD46. Interacts with PTPN6. (Microbial infection) Interacts with HIV-1 envelope protein gp120.

Subcellular location. Cell membrane. Cytoplasm. Cytoskeleton. Apical cell membrane. Cell projection. Microvillus membrane. Microvillus.

Tissue specificity. In all tissues and cultured cells studied.

Post-translational modifications. Phosphorylation on Thr-558 is crucial for the formation of microvilli-like structures. Phosphorylation by ROCK2 suppresses the head-to-tail association of the N-terminal and C-terminal halves resulting in an opened conformation which is capable of actin and membrane-binding. Phosphorylation on Thr-558 by STK10 negatively regulates lymphocyte migration and polarization. S-nitrosylation of Cys-117 is induced by interferon-gamma and oxidatively-modified low-densitity lipoprotein (LDL(ox)) implicating the iNOS-S100A8/9 transnitrosylase complex.

Disease relevance. Immunodeficiency 50 (IMD50) [MIM:300988] A primary immunodeficiency disorder characterized by onset of recurrent bacterial or varicella zoster virus infections in early childhood, profound lymphopenia, hypogammaglobulinemia, fluctuating monocytopenia and neutropenia, and a poor immune response to vaccine antigens. The disease is caused by variants affecting the gene represented in this entry.

Activity regulation. A head-to-tail association, of the N-terminal and C-terminal halves results in a closed conformation (inactive form) which is incapable of actin or membrane-binding.

Domain organisation. The [IL]-x-C-x-x-[DE] motif is a proposed target motif for cysteine S-nitrosylation mediated by the iNOS-S100A8/A9 transnitrosylase complex.

RefSeq proteins (1): NP_002435* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR000299FERM_domainDomain
IPR000798Ez/rad/moesin-likeFamily
IPR008954Moesin_tail_sfHomologous_superfamily
IPR011174ERMFamily
IPR011259ERM_C_domDomain
IPR011993PH-like_dom_sfHomologous_superfamily
IPR014352FERM/acyl-CoA-bd_prot_sfHomologous_superfamily
IPR018979FERM_NDomain
IPR018980FERM_PH-like_CDomain
IPR019747FERM_CSConserved_site
IPR019748FERM_centralDomain
IPR019749Band_41_domainDomain
IPR029071Ubiquitin-like_domsfHomologous_superfamily
IPR035963FERM_2Homologous_superfamily
IPR041789ERM_FERM_CDomain
IPR046810ERM_helicalDomain

Pfam: PF00373, PF00769, PF09379, PF09380, PF20492

UniProt features (65 total): helix 18, strand 15, modified residue 10, mutagenesis site 6, turn 5, region of interest 3, compositionally biased region 3, initiator methionine 1, chain 1, domain 1, sequence variant 1, short sequence motif 1

Structure

Experimental structures (PDB)

10 structures.

PDBMethodResolution (Å)
8CISX-RAY DIFFRACTION1.52
6TXQX-RAY DIFFRACTION1.73
8XZ5X-RAY DIFFRACTION1.8
8CIRX-RAY DIFFRACTION1.85
1EF1X-RAY DIFFRACTION1.9
6TXSX-RAY DIFFRACTION2.2
8CIUX-RAY DIFFRACTION2.39
8CITX-RAY DIFFRACTION2.54
1E5WX-RAY DIFFRACTION2.7
1SGHX-RAY DIFFRACTION3.5

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-P26038-F186.770.62

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (10): 74, 79, 83, 116, 117, 139, 165, 407, 527, 558

Mutagenesis-validated functional residues (6):

PositionPhenotype
115inhibits s-nitrosylation of cys-117; when associated with m-120.
120inhibits s-nitrosylation of cys-117; when associated with m-115.
556impairs phosphorylation by stk10.
558abolishes phosphorylation by stk10.
558completely abolishes the interaction between n- and c-terminal domains.
558phosphomimetic mutant.

Function

Pathways and Gene Ontology

Reactome pathways

19 pathways

IDPathway
R-HSA-437239Recycling pathway of L1
R-HSA-8950505Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation
R-HSA-9662360Sensory processing of sound by inner hair cells of the cochlea
R-HSA-9662361Sensory processing of sound by outer hair cells of the cochlea
R-HSA-9725370Signaling by ALK fusions and activated point mutants
R-HSA-1266738Developmental Biology
R-HSA-1280215Cytokine Signaling in Immune system
R-HSA-1643685Disease
R-HSA-168256Immune System
R-HSA-373760L1CAM interactions
R-HSA-422475Axon guidance
R-HSA-447115Interleukin-12 family signaling
R-HSA-449147Signaling by Interleukins
R-HSA-5663202Diseases of signal transduction by growth factor receptors and second messengers
R-HSA-9020591Interleukin-12 signaling
R-HSA-9659379Sensory processing of sound
R-HSA-9675108Nervous system development
R-HSA-9700206Signaling by ALK in cancer
R-HSA-9709957Sensory Perception

MSigDB gene sets: 430 (showing top): GSE45365_NK_CELL_VS_CD11B_DC_DN, GSE45365_NK_CELL_VS_CD8A_DC_UP, GOBP_MORPHOGENESIS_OF_AN_EPITHELIUM, GGGACCA_MIR133A_MIR133B, GOBP_ENDOTHELIAL_CELL_DEVELOPMENT, GOBP_EPITHELIUM_DEVELOPMENT, GOBP_ESTABLISHMENT_OR_MAINTENANCE_OF_MONOPOLAR_CELL_POLARITY, GNF2_MSN, GOBP_GLAND_MORPHOGENESIS, GOBP_REGULATION_OF_CELL_MORPHOGENESIS, GOBP_ESTABLISHMENT_OR_MAINTENANCE_OF_CELL_POLARITY, GOBP_REGULATION_OF_PODOSOME_ASSEMBLY, REACTOME_CYTOKINE_SIGNALING_IN_IMMUNE_SYSTEM, GCM_MSN, GOBP_EPITHELIAL_CELL_DEVELOPMENT

GO Biological Process (20): immunological synapse formation (GO:0001771), leukocyte cell-cell adhesion (GO:0007159), regulation of cell shape (GO:0008360), regulation of cell size (GO:0008361), positive regulation of gene expression (GO:0010628), gland morphogenesis (GO:0022612), membrane to membrane docking (GO:0022614), T cell proliferation (GO:0042098), establishment of epithelial cell apical/basal polarity (GO:0045198), positive regulation of protein catabolic process (GO:0045732), leukocyte migration (GO:0050900), establishment of endothelial barrier (GO:0061028), T cell aggregation (GO:0070489), positive regulation of podosome assembly (GO:0071803), T cell migration (GO:0072678), regulation of organelle assembly (GO:1902115), positive regulation of protein localization to early endosome (GO:1902966), regulation of lymphocyte migration (GO:2000401), positive regulation of early endosome to late endosome transport (GO:2000643), cytoskeleton organization (GO:0007010)

GO Molecular Function (9): double-stranded RNA binding (GO:0003725), actin binding (GO:0003779), signaling receptor binding (GO:0005102), structural constituent of cytoskeleton (GO:0005200), enzyme binding (GO:0019899), protein kinase binding (GO:0019901), cell adhesion molecule binding (GO:0050839), protein binding (GO:0005515), cytoskeletal protein binding (GO:0008092)

GO Cellular Component (24): uropod (GO:0001931), obsolete extracellular space (GO:0005615), nucleus (GO:0005634), cytoplasm (GO:0005737), cytosol (GO:0005829), cytoskeleton (GO:0005856), plasma membrane (GO:0005886), microvillus (GO:0005902), adherens junction (GO:0005912), focal adhesion (GO:0005925), cell surface (GO:0009986), basolateral plasma membrane (GO:0016323), apical plasma membrane (GO:0016324), filopodium (GO:0030175), pseudopodium (GO:0031143), microvillus membrane (GO:0031528), vesicle (GO:0031982), apical part of cell (GO:0045177), perinuclear region of cytoplasm (GO:0048471), extracellular exosome (GO:0070062), cell periphery (GO:0071944), blood microparticle (GO:0072562), membrane (GO:0016020), cell projection (GO:0042995)

Reactome top-level categories

Rollup of top-14 pathways:

CategoryPathways
Sensory processing of sound2
L1CAM interactions1
Interleukin-12 signaling1
Signaling by ALK in cancer1
Immune System1
Axon guidance1
Nervous system development1
Signaling by Interleukins1
Cytokine Signaling in Immune system1
Disease1
Interleukin-12 family signaling1
Sensory Perception1
Developmental Biology1
Diseases of signal transduction by growth factor receptors and second messengers1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure5
protein binding4
lymphocyte migration2
plasma membrane bounded cell projection2
cytoplasm2
actin-based cell projection2
plasma membrane region2
cell-cell recognition1
lymphocyte activation1
cell-cell adhesion1
regulation of cell morphogenesis1
regulation of biological quality1
regulation of cellular component size1
gene expression1
regulation of gene expression1
positive regulation of macromolecule biosynthetic process1
animal organ morphogenesis1
gland development1
membrane docking1
T cell activation1
lymphocyte proliferation1
polarized epithelial cell differentiation1
establishment of apical/basal cell polarity1
establishment or maintenance of epithelial cell apical/basal polarity1
establishment of epithelial cell polarity1
positive regulation of catabolic process1
protein catabolic process1
regulation of protein catabolic process1
positive regulation of protein metabolic process1
immune system process1
cell migration1
endothelial cell development1
lymphocyte aggregation1
positive regulation of protein-containing complex assembly1
podosome assembly1
regulation of podosome assembly1
positive regulation of plasma membrane bounded cell projection assembly1
regulation of organelle organization1
regulation of cellular component biogenesis1
organelle assembly1

Protein interactions and networks

STRING

2812 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
MSNNHERF1O14745997
MSNCD44P16070992
MSNEZRP15311983
MSNRDXP35241983
MSNSLC9A1P19634974
MSNSPNP16150942
MSNICAM1P05362910
MSNNHERF2Q15599897
MSNVCLP18206873
MSNICAM2P13598850
MSNPDPNQ86YL7835
MSNCD46P15529816
MSNSELLP14151811
MSNFLNAP21333796
MSNRHOAP06749793

IntAct

213 interactions, top by confidence:

ABTypeScore
LRRK2MSNpsi-mi:“MI:0217”(phosphorylation reaction)0.960
MSNLRRK2psi-mi:“MI:0217”(phosphorylation reaction)0.960
EZRMSNpsi-mi:“MI:0914”(association)0.740
CFTRESYT2psi-mi:“MI:0914”(association)0.710
SEC23ASEC24Dpsi-mi:“MI:0914”(association)0.690
NHERF1MSNpsi-mi:“MI:0915”(physical association)0.680
NHERF1MSNpsi-mi:“MI:0403”(colocalization)0.680
NHERF1MSNpsi-mi:“MI:0407”(direct interaction)0.680
IGF1RPIK3R2psi-mi:“MI:2364”(proximity)0.590
Map4k4MSNpsi-mi:“MI:0217”(phosphorylation reaction)0.560
Map4k4MSNpsi-mi:“MI:0407”(direct interaction)0.560
LMO2MSNpsi-mi:“MI:0915”(physical association)0.560
PLEKCAVIN2psi-mi:“MI:0914”(association)0.560
MAPK10HAX1psi-mi:“MI:0914”(association)0.550

BioGRID (418): MSN (Affinity Capture-MS), MSN (Affinity Capture-MS), VPS11 (Reconstituted Complex), ACAA2 (Co-fractionation), AKR1B1 (Co-fractionation), ARHGDIA (Co-fractionation), CALR (Co-fractionation), CALU (Co-fractionation), CD2AP (Co-fractionation), CTNNB1 (Co-fractionation), EIF5AL1 (Co-fractionation), ENO1 (Co-fractionation), ENO2 (Co-fractionation), FABP5 (Co-fractionation), FAXC (Co-fractionation)

ESM2 similar proteins: B0DOB5, B0WYY2, H2KZZ6, O35346, O35763, O35889, P0C1G6, P15311, P26038, P26040, P26041, P26042, P26043, P26044, P31976, P31977, P35240, P35241, P36583, P46150, P46662, P52962, P55196, P59750, Q05397, Q12929, Q15057, Q170J7, Q18685, Q24564, Q29GR8, Q2HJ49, Q32LP2, Q3UU96, Q5R4H4, Q63648, Q66I42, Q6A028, Q6IVG4, Q7PGE8

Diamond homologs: B0WYY2, B2RYE5, O35763, O43491, O70318, P12264, P15311, P26038, P26040, P26041, P26042, P26043, P26044, P26045, P29074, P31976, P31977, P35240, P35241, P46150, P46662, P52962, P59750, P86232, Q12923, Q170J7, Q24564, Q29GR8, Q2HJ49, Q32LP2, Q58CU2, Q5FVG2, Q63648, Q66I42, Q7PS12, Q8BGS1, Q8HZQ5, Q8WY64, Q9H329, Q9HCM4

SIGNOR signaling

9 interactions.

AEffectBMechanism
LRRK2“up-regulates activity”MSNphosphorylation
MSN“form complex”MSN/PDZD8binding
STK10“up-regulates activity”MSNphosphorylation
PRKCQunknownMSNphosphorylation
CDC42BPB“up-regulates activity”MSNphosphorylation
RHOA“up-regulates activity”MSNphosphorylation
MSNup-regulatesPlatelet_aggregation
ROCK1“up-regulates activity”MSNphosphorylation

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 171 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
Antigen Presentation: Folding, assembly and peptide loading of class I MHC619.9×4e-04
Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells515.0×4e-03
Signaling by ALK fusions and activated point mutants67.6×9e-03
SARS-CoV-2-host interactions77.0×7e-03
SARS-CoV-2 activates/modulates innate and adaptive immune responses96.8×2e-03
Interleukin-4 and Interleukin-13 signaling76.0×1e-02
Signaling by Interleukins115.9×1e-03
SARS-CoV-2 Infection85.4×9e-03

GO biological processes:

GO termPartnersFoldFDR
peptidyl-tyrosine phosphorylation617.2×7e-04
leukocyte cell-cell adhesion515.9×4e-03
endoplasmic reticulum to Golgi vesicle-mediated transport98.3×7e-04
protein autophosphorylation76.9×9e-03
protein phosphorylation136.0×4e-04
in utero embryonic development104.9×7e-03

Disease & clinical

Cancer significance

From intOGen — cancer-driver classification: loss-of-function (tumor-suppressor-like) across 4 cancer types — BCC, CCRCC, ESCA, ESCC.

Clinical variants and AI predictions

ClinVar

349 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic12
Likely pathogenic6
Uncertain significance118
Likely benign93
Benign27

Top pathogenic / likely-pathogenic (18)

Variant IDHGVSClassification
1252064NM_002444.3(MSN):c.1056del (p.Lys352fs)Pathogenic
1482598NM_002444.3(MSN):c.1114del (p.Ala372fs)Pathogenic
2017647NM_002444.3(MSN):c.49G>T (p.Glu17Ter)Pathogenic
2019813NM_002444.3(MSN):c.1174_1183dup (p.Glu395fs)Pathogenic
2036029NM_002444.3(MSN):c.586C>T (p.Gln196Ter)Pathogenic
2101770NM_002444.3(MSN):c.1303C>T (p.Arg435Ter)Pathogenic
2729282NM_002444.3(MSN):c.504G>A (p.Trp168Ter)Pathogenic
2758658NM_002444.3(MSN):c.585_586dup (p.Gln196fs)Pathogenic
3639773NM_002444.3(MSN):c.1471dup (p.Ser491fs)Pathogenic
372154NM_002444.3(MSN):c.511C>T (p.Arg171Trp)Pathogenic
4714962NM_002444.3(MSN):c.1279C>T (p.Arg427Ter)Pathogenic
4803753NM_002444.3(MSN):c.1348C>T (p.Gln450Ter)Pathogenic
2130284NM_002444.3(MSN):c.13-1G>ALikely pathogenic
3337322NM_002444.3(MSN):c.1638_1648del (p.Glu547fs)Likely pathogenic
3653117NM_002444.3(MSN):c.1251+1G>ALikely pathogenic
372155NM_002444.3(MSN):c.1657C>T (p.Arg553Ter)Likely pathogenic
636909NM_002444.3(MSN):c.1580C>A (p.Ser527Ter)Likely pathogenic
804017NM_002444.3(MSN):c.1601A>C (p.Asp534Ala)Likely pathogenic

SpliceAI

1625 predictions. Top by Δscore:

VariantEffectΔscore
X:65667852:CGG:Cdonor_loss1.0000
X:65667853:GGT:Gdonor_loss1.0000
X:65667854:G:Adonor_loss1.0000
X:65667855:T:Gdonor_loss1.0000
X:65667856:GAGT:Gdonor_loss1.0000
X:65716811:A:AGacceptor_gain1.0000
X:65716812:T:Gacceptor_gain1.0000
X:65716813:CCTA:Cacceptor_loss1.0000
X:65716814:CTAG:Cacceptor_loss1.0000
X:65716815:TA:Tacceptor_loss1.0000
X:65716816:A:AGacceptor_gain1.0000
X:65716817:G:GAacceptor_gain1.0000
X:65716817:GA:Gacceptor_gain1.0000
X:65716817:GAT:Gacceptor_gain1.0000
X:65716817:GATC:Gacceptor_gain1.0000
X:65716817:GATCA:Gacceptor_gain1.0000
X:65716900:AGGT:Adonor_loss1.0000
X:65716901:GGTA:Gdonor_loss1.0000
X:65716902:GTAA:Gdonor_loss1.0000
X:65716903:T:Adonor_loss1.0000
X:65727808:TTCTA:Tacceptor_loss1.0000
X:65727809:TCTA:Tacceptor_loss1.0000
X:65727810:CTAG:Cacceptor_loss1.0000
X:65727811:TAGGT:Tacceptor_loss1.0000
X:65727812:AGG:Aacceptor_loss1.0000
X:65727906:GAAG:Gdonor_gain1.0000
X:65727906:GAAGG:Gdonor_loss1.0000
X:65727907:AAGGT:Adonor_loss1.0000
X:65727908:AGGTA:Adonor_loss1.0000
X:65727909:GGT:Gdonor_loss1.0000

AlphaMissense

3849 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
X:65716845:G:CA14P1.000
X:65716852:T:CL16P1.000
X:65716857:T:CF18L1.000
X:65716858:T:CF18S1.000
X:65716859:T:AF18L1.000
X:65716859:T:GF18L1.000
X:65716881:G:AG26R1.000
X:65716881:G:CG26R1.000
X:65716881:G:TG26W1.000
X:65716882:G:AG26E1.000
X:65716882:G:TG26V1.000
X:65716891:T:CL29P1.000
X:65727836:G:TR40M1.000
X:65727837:G:CR40S1.000
X:65727837:G:TR40S1.000
X:65727838:G:AE41K1.000
X:65727839:A:TE41V1.000
X:65727844:T:AW43R1.000
X:65727844:T:CW43R1.000
X:65727853:G:CG46R1.000
X:65727854:G:AG46D1.000
X:65727857:T:CL47P1.000
X:65727889:T:AW58R1.000
X:65727889:T:CW58R1.000
X:65727893:T:CL59P1.000
X:65729495:T:CF84L1.000
X:65729497:C:AF84L1.000
X:65729497:C:GF84L1.000
X:65729502:C:AP86H1.000
X:65729596:C:GC117W1.000

dbSNP variants (sampled 300 via entrez): RS1000017058 (X:65654420 T>G), RS1000018452 (X:65590074 C>A,T), RS1000026245 (X:65648638 C>A,T), RS1000027004 (X:65707886 T>C), RS1000058383 (X:65707385 A>G), RS1000123873 (X:65604016 GT>G), RS1000169570 (X:65623134 T>C), RS1000170588 (X:65698827 G>C), RS1000185662 (X:65699251 G>A,T), RS1000194836 (X:65640349 G>C), RS1000209736 (X:65640007 G>A), RS1000223920 (X:65626836 C>G), RS1000269771 (X:65598076 C>G), RS1000285093 (X:65691802 G>A,T), RS1000337104 (X:65691526 T>A,C)

Disease associations

OMIM: gene MIM:309845 | disease phenotypes: MIM:300988, MIM:209850

GenCC curated gene-disease

DiseaseClassificationInheritance
combined immunodeficiency due to moesin deficiencyStrongX-linked

ClinGen Gene-Disease Validity (1)

Expert-panel classifications — Definitive > Strong > Moderate > Limited > Disputed > Refuted.

DiseaseClassificationInheritance
combined immunodeficiency due to moesin deficiencyDefinitiveXL

Mondo (2): combined immunodeficiency due to moesin deficiency (MONDO:0010514), autism (MONDO:0005260)

Orphanet (1): Combined immunodeficiency due to Moesin deficiency (Orphanet:504530)

HPO phenotypes

7 total (8 of 7 shown, HPO-id order):

HPOTerm
HP:0000010Recurrent urinary tract infections
HP:0000964Eczematoid dermatitis
HP:0001419X-linked recessive inheritance
HP:0001875Decreased total neutrophil count
HP:0001888Decreased total lymphocyte count
HP:0002205Recurrent respiratory infections
HP:0004313Decreased circulating immunoglobulin concentration
HP:0000717Autism

GWAS associations

1 associations (top):

StudyTraitp-value
GCST006661_188Male-pattern baldness4.000000e-09

MeSH disease descriptors (1)

DescriptorNameTree numbers
D001321Autistic DisorderF03.625.164.113.500

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (2): CHEMBL4295733 (SINGLE PROTEIN), CHEMBL5465400 (PROTEIN-PROTEIN INTERACTION)

PharmGKB: 1 entry (VIP=true, CPIC=false)

ChEMBL bioactivities

4 potent at pChembl≥5 of 8 total, top 4 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).

pChemblTypeValueUnitMolecule
6.59Kd256.4nMCHEMBL5653589
6.59ED50256.4nMCHEMBL5653589
5.44IC503600nMCHEMBL244695
5.00IC501e+04nMCHEMBL271690

PubChem BioAssay actives

3 with measured affinity, of 9 total; 3 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.

CompoundAssayTypeValueUnit
4-methyl-3-[(2-methyl-6-pyridin-3-ylpyrazolo[3,4-d]pyrimidin-4-yl)amino]-N-[3-(trifluoromethyl)phenyl]benzamide2148787: Binding affinity to human MSN incubated for 45 mins by Kinobead based pull down assaykd0.2565uM
3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4,8-dicarboxylic acid2037711: Inhibition of full-length human GST-tagged MSN/Venus-Flag-tagged CD44 interaction over-expressed in HEK293 cells incubated for 1 hr by chromatography-based GST-pulldown assayic503.6000uM
6-carbamoyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylic acid2037711: Inhibition of full-length human GST-tagged MSN/Venus-Flag-tagged CD44 interaction over-expressed in HEK293 cells incubated for 1 hr by chromatography-based GST-pulldown assayic5010.0000uM

CTD chemical–gene interactions

61 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
bisphenol Aaffects cotreatment, decreases methylation, decreases expression3
sodium arseniteaffects cotreatment, increases abundance, increases expression3
bisphenol Sincreases expression2
Benzo(a)pyreneincreases methylation, decreases methylation, increases expression2
Tobacco Smoke Pollutionaffects expression, increases expression2
aristolochic acid Iincreases expression1
FR900359increases phosphorylation1
bisphenol Fincreases expression1
dicrotophosdecreases expression1
2,4,6-tribromophenoldecreases expression1
testosterone enanthateaffects expression1
triphenyl phosphateaffects expression1
pyrogallol 1,3-dimethyl etheraffects cotreatment, affects localization, increases expression, decreases expression1
quercitrinaffects expression1
arseniteaffects binding, decreases reaction1
manganese chlorideaffects cotreatment, increases abundance, increases expression1
benzo(e)pyreneincreases methylation1
ferrous chlorideincreases expression1
triphenyltinincreases expression1
cupric oxideincreases expression1
tributyltinisothiocyanateincreases expression1
CGP 52608increases reaction, affects binding1
chloropicrinaffects expression1
tanespimycinincreases expression1
4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamideaffects cotreatment, decreases expression1
ICG 001decreases expression1
bisphenol Bincreases expression1
LDN 193189affects cotreatment, decreases expression1
bisphenol AFincreases expression1
4-(4-((5-(4,5-dimethyl-2-nitrophenyl)-2-furanyl)methylene)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzoic aciddecreases expression1

ChEMBL screening assays

4 unique, capped per target: 4 binding

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL4119031BindingBinding affinity to MSN in human NCI-H358 cells at 1 uM by mass spectrometry based pull down assayStudies of TAK1-centered polypharmacology with novel covalent TAK1 inhibitors. — Bioorg Med Chem

Cellosaurus cell lines

2 cell lines: 2 cancer cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_B9VNAbcam HeLa MSN KOCancer cell lineFemale
CVCL_SZ06HAP1 MSN (-)Cancer cell lineMale

Clinical trials (associated diseases)

300 trials via MONDO — disease-level, not drug-specific.

TrialPhaseStatusTitle
NCT00211796PHASE4COMPLETEDDivalproex Sodium ER in Adult Autism
NCT00391261PHASE4COMPLETEDAn Open-label Trial of Metformin for Weight Control of Pediatric Patients on Antipsychotic Medications.
NCT00409747PHASE4COMPLETEDMinocycline to Treat Childhood Regressive Autism
NCT00576732PHASE4COMPLETEDA Study of the Effectiveness and Safety of Two Doses of Risperidone in the Treatment of Children and Adolescents With Autistic Disorder
NCT00844753PHASE4COMPLETEDAtomoxetine, Placebo and Parent Management Training in Autism
NCT01028820PHASE4COMPLETEDFMRI Brain Activation of Aripiprazole Treatment in Autism Spectrum Disorders
NCT01098383PHASE4UNKNOWNTreatment With Acetyl-Choline Esterase Inhibitors in Children With Autism Spectrum Disorders
NCT01333865PHASE4COMPLETEDA Study of Memantine Hydrochloride (Namenda®) for Cognitive and Behavioral Impairment in Adults With Autism Spectrum Disorders
NCT01337700PHASE4COMPLETEDMilnacipran in Autism and the Functional Locus Coeruleus and Noradrenergic Model of Autism
NCT01695200PHASE4COMPLETEDOmega-3 Fatty Acids in Autism Spectrum Disorders
NCT02069977PHASE4UNKNOWNStudy to Evaluate the Efficacy and Safety of Aripiprazole
NCT02096952PHASE4COMPLETEDMethylphenidate ER Liquid Formulation in Adults With ASD and ADHD
NCT02199925PHASE4UNKNOWNAn Open-Label Study to Evaluate the Efficacy of High-Dose Gammaplex in Children on the Autism Spectrum
NCT02235467PHASE4COMPLETEDMultisite Study: Parental Training Using Video Modelling to Develop Social Skills in Children With Autism
NCT02255565PHASE4COMPLETEDDose Response Effects of Quillivant XR in Children With ADHD and Autism: A Pilot Study
NCT02940574PHASE4COMPLETEDNeural and Behavioral Effects of Oxytocin in Autism Spectrum Disorders
NCT03333629PHASE4COMPLETEDPromoting Positive Outcomes for Individuals With ASD: Linking Early Detection, Treatment, and Long-term Outcomes
NCT03337646PHASE4COMPLETEDEvaluation of the Effect and Safety of Lisdexamfetamine in Children Aged 6-12 With ADHD and Autism
NCT03538431PHASE4COMPLETEDImproving Driving in Young People With Autism Spectrum Disorders
NCT03757585PHASE4COMPLETEDNatural Treatments for the Management of Emotional Dysregulation in Youth With Non-verbal Learning Disability (NVLD) and/or Autism Spectrum Disorders (ASD)
NCT04903353PHASE4COMPLETEDPragmatic Trial Comparing Weight Gain in Children With Autism Taking Risperidone Versus Aripiprazole
NCT05063656PHASE4COMPLETEDBiomarker-Driven Pharmacological Treatment of Adolescents With Autism Spectrum Disorder With Gabapentin
NCT05146245PHASE4UNKNOWNSafety and Pharmacokinetics of Antipsychotics in Children 2: Studying TDM in an RCT
NCT05916339PHASE4RECRUITINGAWARE: Management of ADHD in Autism Spectrum Disorder
NCT05954052PHASE4TERMINATEDA Study of Glutathione in Children With Autism Spectrum Disorder
NCT06853665PHASE4RECRUITINGThe TEAM Study - Treatment Efficacy for Autism/Attention Using Mixed Amphetamine
NCT07054697PHASE4COMPLETEDPilot-RCT With Individualized Homeopathic Treatment in the Children With Autism Spectrum Disorder
NCT07161804PHASE4COMPLETEDPilot RCT Using Homeopathic Medicines in ASD
NCT07439042PHASE4NOT_YET_RECRUITINGBuspirone for Anxiety in Autistic Youth
NCT00036231PHASE3TERMINATEDSynthetic Human Secretin in Children With Autism and Gastrointestinal Dysfunction
NCT00036244PHASE3COMPLETEDSynthetic Human Secretin in Children With Autism
NCT00065884PHASE3UNKNOWNValproate Response in Aggressive Autistic Adolescents
NCT00065962PHASE3COMPLETEDSecretin for the Treatment of Autism
NCT00252603PHASE3COMPLETEDGalantamine Versus Placebo in Childhood Autism
NCT00346736PHASE3COMPLETEDUse of Acupuncture In Children With Autistic Spectrum Disorder
NCT00352248PHASE3COMPLETEDRandomized Controlled Trial of Acupuncture Versus Sham Acupuncture in Autistic Spectrum Disorder
NCT00352352PHASE3COMPLETEDUse of Acupuncture In Children With Autistic Spectrum Disorder
NCT00355329PHASE3COMPLETEDRandomized Control Trial of Using Tongue Acupuncture in Autistic Spectrum Disorder Using PET Scan for Clinical Correlation
NCT00498173PHASE3COMPLETEDEffectiveness of Atomoxetine in Treating ADHD Symptoms in Children and Adolescents With Autism
NCT00541346PHASE3COMPLETEDA Pilot Study of Daytrana TM in Children With Autism Co-Morbid for Attention Deficit Hyperactivity Disorder (ADHD) Symptoms