MAMDC4

gene
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Also known as AEGPDKFZp434M1411EDTB

Summary

MAMDC4 (MAM domain containing 4, HGNC:24083) is a protein-coding gene on chromosome 9q34.3, encoding Apical endosomal glycoprotein (Q6UXC1). Probably involved in the sorting and selective transport of receptors and ligands across polarized epithelia.

Predicted to enable protein histidine phosphatase activity. Predicted to be involved in peptidyl-histidine dephosphorylation. Predicted to be located in cytosol.

Source: NCBI Gene 158056 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): schizophrenia (No Known Disease Relationship, GenCC)
  • Clinical variants (ClinVar): 292 total
  • MANE Select transcript: NM_206920

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:24083
Approved symbolMAMDC4
NameMAM domain containing 4
Location9q34.3
Locus typegene with protein product
StatusApproved
AliasesAEGP, DKFZp434M1411, EDTB
Ensembl geneENSG00000177943
Ensembl biotypeprotein_coding
OMIM617208
Entrez158056

Gene structure

Transcript identifiers

Ensembl transcripts: 14 — 11 protein_coding, 2 protein_coding_CDS_not_defined, 1 nonsense_mediated_decay

ENST00000317446, ENST00000445819, ENST00000479475, ENST00000481327, ENST00000485732, ENST00000905522, ENST00000905523, ENST00000905524, ENST00000905525, ENST00000905526, ENST00000905527, ENST00000905528, ENST00000905529, ENST00000914727

RefSeq mRNA: 1 — MANE Select: NM_206920 NM_206920

CCDS: CCDS7010

Canonical transcript exons

ENST00000317446 — 27 exons

ExonStartEnd
ENSE00001402053136854762136854850
ENSE00001409308136853777136853907
ENSE00001420716136856710136856826
ENSE00001425358136858186136858276
ENSE00001600860136853102136853209
ENSE00001660942136853545136853670
ENSE00001671593136853285136853458
ENSE00003471015136859005136859132
ENSE00003491271136859886136860064
ENSE00003496238136854937136855110
ENSE00003504969136854539136854676
ENSE00003545307136856907136857041
ENSE00003557050136857165136857298
ENSE00003557540136858400136858546
ENSE00003560836136853992136854076
ENSE00003561553136854211136854336
ENSE00003561704136856018136856149
ENSE00003564659136857979136858097
ENSE00003594069136859209136859317
ENSE00003606670136855732136855848
ENSE00003642204136855254136855338
ENSE00003643481136855431136855619
ENSE00003647471136858719136858853
ENSE00003662169136857367136857586
ENSE00003677367136857659136857796
ENSE00003843588136852346136852462
ENSE00003844690136860562136860799

Expression profiles

Bgee: expression breadth ubiquitous, 167 present calls, max score 96.84.

FANTOM5 (CAGE): breadth tissue_specific, TPM avg 0.5619 / max 490.1639, expressed in 24 samples.

FANTOM5 promoters (5 alternative TSS)

Promoter IDTPM avgSamples expressed
995780.356211
995790.150310
995750.029315
995760.019713
995770.00645

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
right hemisphere of cerebellumUBERON:001489096.84gold quality
cerebellar hemisphereUBERON:000224596.01gold quality
cerebellar cortexUBERON:000212995.87gold quality
cerebellumUBERON:000203794.68gold quality
mucosa of transverse colonUBERON:000499193.17gold quality
apex of heartUBERON:000209891.84gold quality
pituitary glandUBERON:000000791.52gold quality
adenohypophysisUBERON:000219691.34gold quality
right lobe of liverUBERON:000111489.46gold quality
right lobe of thyroid glandUBERON:000111989.32gold quality
right uterine tubeUBERON:000130288.40gold quality
left lobe of thyroid glandUBERON:000112087.43gold quality
spleenUBERON:000210686.90gold quality
transverse colonUBERON:000115786.52gold quality
thyroid glandUBERON:000204685.98gold quality
sural nerveUBERON:001548885.59gold quality
ileal mucosaUBERON:000033184.51gold quality
jejunal mucosaUBERON:000039984.18gold quality
liverUBERON:000210784.15gold quality
heart left ventricleUBERON:000208484.13gold quality
body of pancreasUBERON:000115084.10gold quality
lower esophagus mucosaUBERON:003583483.77gold quality
cardiac ventricleUBERON:000208283.56gold quality
right testisUBERON:000453483.23gold quality
small intestine Peyer’s patchUBERON:000345482.86gold quality
small intestineUBERON:000210881.51gold quality
left testisUBERON:000453381.45gold quality
right adrenal gland cortexUBERON:003582781.04gold quality
endocervixUBERON:000045881.02gold quality
body of stomachUBERON:000116180.68gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 0.

ExperimentMarker?Max mean expression
E-ANND-3no2.30

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

4 targeting MAMDC4, 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-4640-5P97.4266.331543
HSA-MIR-4726-5P97.2465.671299
HSA-MIR-744-5P93.7865.29230
HSA-MIR-10396A-5P93.4965.54172

Literature-anchored findings (GeneRIF, showing 4)

  • Results suggest that it is the presence of rare syntenic SEC16A and MAMDC4 deletions that increases susceptibility to axial spondyloarthritis in family members who carry the HLA-B*27 allele. (PMID:25956157)
  • Expression is localized to the apical surface of the neonatal enterocyte and decreases over time in association with bacterial colonization of the intestine (PMID:27821716)
  • Regulation of YAP and Wnt signaling by the endosomal protein MAMDC4. (PMID:38787854)
  • PMID:7829488 describes studies in rat, however, the human MAMDC4 gene product appears to be a homolog of rat apical early endosomal glycoprotein. (PMID:7829488)

Cross-species orthologs

2 orthologs

OrganismSymbolGene ID
danio_reriomamdc2bENSDARG00000073695
mus_musculusMamdc4ENSMUSG00000026941

Paralogs (4): MDGA1 (ENSG00000112139), MDGA2 (ENSG00000139915), MAMDC2 (ENSG00000165072), MALRD1 (ENSG00000204740)

Protein

Protein identifiers

Apical endosomal glycoproteinQ6UXC1 (reviewed: Q6UXC1)

Alternative names: MAM domain-containing protein 4

All UniProt accessions (2): Q6UXC1, A0A0C4DGF7

UniProt curated annotations — full annotation on UniProt →

Function. Probably involved in the sorting and selective transport of receptors and ligands across polarized epithelia.

Subcellular location. Membrane.

Miscellaneous. Gene prediction based on similarity to rat ortholog. May be due to intron retention.

Isoforms (3)

UniProt IDNamesCanonical?
Q6UXC1-11yes
Q6UXC1-22
Q6UXC1-33

RefSeq proteins (1): NP_996803* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR000998MAM_domDomain
IPR002172LDrepeatLR_classA_rptRepeat
IPR013320ConA-like_dom_sfHomologous_superfamily
IPR023415LDLR_class-A_CSConserved_site
IPR036055LDL_receptor-like_sfHomologous_superfamily
IPR051560MAM_domain-containingFamily

Pfam: PF00057, PF00629

UniProt features (35 total): domain 9, glycosylation site 6, disulfide bond 6, splice variant 3, sequence variant 3, region of interest 2, topological domain 2, signal peptide 1, chain 1, compositionally biased region 1, transmembrane region 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q6UXC1-F179.910.30

Functional residue map

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

Disulfide bonds (6): 229–241, 236–254, 248–265, 457–468, 464–481, 475–490

Glycosylation sites (6): 203, 281, 339, 583, 636, 835

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 44 (showing top): ACEVEDO_NORMAL_TISSUE_ADJACENT_TO_LIVER_TUMOR_DN, GATA1_04, WAKABAYASHI_ADIPOGENESIS_PPARG_RXRA_BOUND_8D, SRC_UP.V1_UP, chr9q34, SUPT16H_TARGET_GENES, GSE8685_IL15_ACT_IL2_STARVED_VS_IL21_ACT_IL2_STARVED_CD4_TCELL_DN, JINESH_BLEBBISHIELD_VS_LIVE_CONTROL_UP, MANNE_COVID19_COMBINED_COHORT_VS_HEALTHY_DONOR_PLATELETS_UP, ZHONG_PFC_C3_ASTROCYTE, GAO_SMALL_INTESTINE_24W_C4_ENTEROCYTE_PROGENITOR_SUBTYPE_2, GAO_LARGE_INTESTINE_24W_C10_ENTEROCYTE, GSE12003_MIR223_KO_VS_WT_BM_PROGENITOR_8D_CULTURE_DN, DESCARTES_FETAL_INTESTINE_INTESTINAL_EPITHELIAL_CELLS, DESCARTES_FETAL_STOMACH_MUC13_DMBT1_POSITIVE_CELLS

GO Biological Process (2): nervous system development (GO:0007399), protein transport (GO:0015031)

GO Molecular Function (1): protein binding (GO:0005515)

GO Cellular Component (1): membrane (GO:0016020)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
system development1
transport1
intracellular protein localization1
establishment of protein localization1
binding1
cellular anatomical structure1

Protein interactions and networks

STRING

726 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
MAMDC4CCDC183Q5T5S1575
MAMDC4LCN12Q6JVE5552
MAMDC4TMEM141Q96I45549
MAMDC4NPDC1Q9NQX5483
MAMDC4VWCEQ96DN2460
MAMDC4ANKDD1BA6NHY2448
MAMDC4ETDAQ3ZM63447
MAMDC4ABCA2Q9BZC7443
MAMDC4TMEM121Q9BTD3440
MAMDC4OR10G2Q8NGC3397
MAMDC4TMEM252Q8N6L7394
MAMDC4ENTPD2Q9Y5L3387
MAMDC4TCEANC2Q96MN5376
MAMDC4USP54Q70EL1359
MAMDC4MS4A13Q5J8X5348

IntAct

3 interactions, top by confidence:

ABTypeScore
MAMDC4psi-mi:“MI:0914”(association)0.350
MAMDC4psi-mi:“MI:0915”(physical association)0.000

BioGRID (18): MAMDC4 (Synthetic Lethality), SUPT7L (Affinity Capture-MS), TTC28 (Affinity Capture-MS), CENPN (Affinity Capture-MS), TADA1 (Affinity Capture-MS), TAF6L (Affinity Capture-MS), ANGEL2 (Affinity Capture-MS), C3orf33 (Affinity Capture-MS), SLC30A9 (Affinity Capture-MS), HSPA5 (Affinity Capture-MS), ADCY6 (Affinity Capture-MS), AHCTF1 (Affinity Capture-MS), ATP8B2 (Affinity Capture-MS), ASPHD2 (Affinity Capture-MS), POM121C (Affinity Capture-MS)

ESM2 similar proteins: A0EQL2, A2AJ76, A2AJA7, A6H8M9, A8T650, A8T682, A8T688, A8T6A6, D3ZLH5, F1QVU0, O08628, O75173, O88839, P04278, P08514, P08689, P0DV84, P15196, P20701, P29376, P32970, P38570, P60882, P80012, P97497, P97793, Q13444, Q15113, Q5RFQ8, Q5TM20, Q61398, Q63191, Q6UXC1, Q7Z304, Q7Z442, Q7Z7M0, Q8BNJ2, Q8CG85, Q8K1S7, Q8NBP7

Diamond homologs: A2AJA7, O14786, P28824, P85171, P98072, P98073, P98157, Q0PMG2, Q0WYX8, Q63191, Q6UXC1, Q8NFP4, Q8QFX6, Q9QWJ9, A0A182C2Z2, A2RUV9, B3EWZ5, B3EWZ6, B8V7S0, B8VIV4, F1RWC3, O08628, O08859, O15537, O18806, O35276, O35375, O35474, O43854, O43897, O57382, O57460, O60462, O60494, O70244, O88783, P00451, P12259, P12263, P13497

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance246
Likely benign20
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

3824 predictions. Top by Δscore:

VariantEffectΔscore
9:136854077:G:GGdonor_gain1.0000
9:136854675:GG:Gdonor_gain1.0000
9:136854676:GG:Gdonor_gain1.0000
9:136855110:GGTA:Gdonor_loss1.0000
9:136855112:T:Gdonor_loss1.0000
9:136857973:T:Aacceptor_gain1.0000
9:136857976:CAG:Cacceptor_loss1.0000
9:136857977:A:AGacceptor_gain1.0000
9:136857977:AGG:Aacceptor_loss1.0000
9:136857978:G:GGacceptor_gain1.0000
9:136857978:G:GTacceptor_loss1.0000
9:136857978:GGC:Gacceptor_gain1.0000
9:136858093:GGAGG:Gdonor_gain1.0000
9:136858094:GAGG:Gdonor_gain1.0000
9:136858094:GAGGG:Gdonor_gain1.0000
9:136858096:GG:Gdonor_gain1.0000
9:136858097:GG:Gdonor_gain1.0000
9:136858098:G:GGdonor_gain1.0000
9:136858098:GTG:Gdonor_loss1.0000
9:136858255:G:GTdonor_gain1.0000
9:136859205:TCA:Tacceptor_loss1.0000
9:136859207:A:AGacceptor_gain1.0000
9:136859207:AGA:Aacceptor_loss1.0000
9:136859208:G:GGacceptor_gain1.0000
9:136859208:GATC:Gacceptor_gain1.0000
9:136852459:CTGGG:Cdonor_loss0.9900
9:136852461:GG:Gdonor_gain0.9900
9:136852462:GG:Gdonor_gain0.9900
9:136852463:G:GGdonor_gain0.9900
9:136852464:T:Adonor_loss0.9900

AlphaMissense

7302 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
9:136857244:G:CW763C0.993
9:136857244:G:TW763C0.993
9:136855769:G:CW503C0.991
9:136855769:G:TW503C0.991
9:136855799:G:CW513C0.991
9:136855799:G:TW513C0.991
9:136858055:G:CW926C0.991
9:136858055:G:TW926C0.991
9:136854812:A:CS329R0.988
9:136854814:C:AS329R0.988
9:136854814:C:GS329R0.988
9:136859090:G:CW1093C0.988
9:136859090:G:TW1093C0.988
9:136858473:G:CW995C0.987
9:136858473:G:TW995C0.987
9:136853862:G:CW180C0.984
9:136853862:G:TW180C0.984
9:136857012:T:CF727S0.984
9:136855105:T:CF398L0.983
9:136855107:C:AF398L0.983
9:136855107:C:GF398L0.983
9:136855797:T:AW513R0.983
9:136855797:T:CW513R0.983
9:136857513:G:CW830C0.983
9:136857513:G:TW830C0.983
9:136858471:T:AW995R0.982
9:136858471:T:CW995R0.982
9:136859127:T:CF1106L0.982
9:136859129:C:AF1106L0.982
9:136859129:C:GF1106L0.982

dbSNP variants (sampled 300 via entrez): RS1000582189 (9:136856604 T>C), RS1001219862 (9:136852946 G>A), RS1001545789 (9:136860552 C>T), RS1001698063 (9:136860436 G>A,C), RS1001731571 (9:136852753 T>C,G), RS1002999074 (9:136851900 G>A), RS1003079988 (9:136858087 G>A,T), RS1003152782 (9:136855245 T>C), RS1003307279 (9:136859753 A>G), RS1003401494 (9:136852040 C>A,T), RS1004031281 (9:136859917 T>A,C), RS1004083675 (9:136859770 T>C), RS1004460121 (9:136851858 G>A), RS1004726665 (9:136852939 G>A), RS1004825169 (9:136852674 T>C)

Disease associations

OMIM: gene MIM:617208 | disease phenotypes:

GenCC curated gene-disease

DiseaseClassificationInheritance
schizophreniaNo Known Disease RelationshipUnknown

Mondo (1): schizophrenia (MONDO:0005090)

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

0 associations (top):

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

CTD chemical–gene interactions

26 total (human), top 26 by PubMed support.

ChemicalActions (top 5)PubMed papers
aristolochic acid Idecreases expression1
6,7-dimethoxy-2-(pyrrolidin-1-yl)-N-(5-(pyrrolidin-1-yl)pentyl)quinazolin-4-amineincreases expression1
2,5,2’,5’-tetrachlorobiphenyldecreases expression1
sulforaphanedecreases expression1
tris(1,3-dichloro-2-propyl)phosphatedecreases expression1
sodium arsenitedecreases expression1
benzo(e)pyrenedecreases methylation1
ferrous chloridedecreases expression1
di-n-butylphosphoric acidaffects expression1
abrineincreases expression1
Resveratrolaffects cotreatment, decreases expression1
Sunitinibincreases expression1
Air Pollutantsaffects expression, increases abundance1
Diethylhexyl Phthalatedecreases expression1
Doxorubicindecreases expression1
Methapyrilenedecreases methylation1
Ozoneaffects expression, increases abundance1
Plant Extractsaffects cotreatment, decreases expression1
Smokedecreases expression1
Thiramdecreases expression1
Tobacco Smoke Pollutiondecreases expression1
Triclosandecreases expression1
Urethanedecreases expression1
Valproic Acidincreases methylation1
Aflatoxin B1decreases expression1
Acrylamidedecreases expression1

Clinical trials (associated diseases)

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

TrialPhaseStatusTitle
NCT00000374PHASE4COMPLETEDTreatment for First-Episode Schizophrenia
NCT00001656PHASE4COMPLETEDComparison of Clozapine vs Olanzapine in Childhood-Onset Psychotic Disorders
NCT00007774PHASE4COMPLETEDTo Determine if Olanzapine is More Cost Effective Than Haloperidol for the Treatment of Schizophrenia
NCT00014001PHASE4COMPLETEDCATIE- Schizophrenia Trial
NCT00018668PHASE4COMPLETEDAntipsychotic Response in Schizophrenia
NCT00034801PHASE4COMPLETEDOlanzapine Versus Active Comparator in the Treatment of Depression in Patients With Schizophrenia
NCT00034905PHASE4COMPLETEDA Comparison of Seroquel vs. Risperidone in Schizophrenia
NCT00036088PHASE4COMPLETEDOlanzapine Versus An Active Comparator in the Treatment of Schizophrenia
NCT00044187PHASE4COMPLETEDThe Assessment of a Weight-Gain Agent for the Treatment of Olanzapine-Associated Anti-Obesity Agent in Patients With Schizophrenia, Schizophreniform Disorder, Schizoaffective Disorder, and Bipolar I Disorder
NCT00044655PHASE4COMPLETEDSwitching Medication to Treat Schizophrenia
NCT00048828PHASE4COMPLETEDTreating Drug-Resistant Childhood Schizophrenia
NCT00053703PHASE4COMPLETEDTreatment of Early Onset Schizophrenia Spectrum Disorders (TEOSS)
NCT00056498PHASE4COMPLETEDRisperidone Treatment in Schizophrenia Patients Who Are Currently Taking Clozapine
NCT00061802PHASE4COMPLETEDEfficacy and Safety of Two Atypical Antipsychotics vs. Placebo in Patients With an Acute Exacerbation of Either Schizophrenia or Schizoaffective Disorder
NCT00080327PHASE4COMPLETEDStudy of Three Doses of Aripiprazole in Patients With Acute Schizophrenia
NCT00088049PHASE4COMPLETEDStudy of Olanzapine vs. Aripiprazole in the Treatment of Schizophrenia
NCT00090012PHASE4COMPLETEDComparison of Continuing Olanzapine to Switching to Quetiapine in Overweight or Obese Patients With Schizophrenia and Schizoaffective Disorder
NCT00100776PHASE4COMPLETEDEfficacy of High Dose Olanzapine for the Treatment of Schizophrenia and Schizoaffective Disorder
NCT00103571PHASE4COMPLETEDOlanzapine Versus Aripiprazole in the Treatment of Acutely Ill Patients With Schizophrenia
NCT00108368PHASE4COMPLETEDThe Effects of Risperidone and Olanzapine on Thinking
NCT00114595PHASE4COMPLETEDEthyl-Eicosapentaenoic Acid and Tardive Dyskinesia
NCT00130923PHASE4COMPLETEDRisperidone Long-acting Versus Oral Risperidone in Patients With Schizophrenia and Alcohol Use Disorder
NCT00137020PHASE4COMPLETEDClinical Effect Of Cross Titration Of Antipsychotics With Ziprasidone In Schizophrenia Or Schizoaffective Disorder
NCT00140166PHASE4COMPLETEDTreatment of Acute Schizophrenia With Vitamin Therapy
NCT00145847PHASE4COMPLETEDNaltrexone Treatment of Alcohol Abuse in Schizophrenia
NCT00148564PHASE4COMPLETEDEnergy Homeostasis Under Treatment With Atypical Antipsychotics
NCT00156715PHASE4COMPLETEDEfficacy of Quetiapine in the Treatment of Patients With Schizophrenia and a Comorbid Substance Use Disorder
NCT00158223PHASE4COMPLETEDEffectiveness of Pimozide in Augmenting the Effects of Clozapine in the Treatment of Schizophrenia
NCT00159081PHASE4COMPLETEDOne Year Drug Treatment in First-Episode Schizophrenia
NCT00159120PHASE4COMPLETEDMaintenance Treatment vs. Stepwise Drug Discontinuation in First-Episode Schizophrenia
NCT00159133PHASE4COMPLETEDProdrome-Based Early Intervention With Antipsychotics vs. Benzodiazepines in First-Episode Schizophrenia
NCT00159757PHASE4TERMINATED12 Week Open, Non-Comparative Switch Study Of Oral Ziprazidone In Previously Treated Schizophrenic Patients
NCT00167817PHASE4COMPLETEDEffect of Switch to Aripiprazole on Health and Smoking Parameters in Patients With Schizophrenia: A Pilot Study
NCT00169026PHASE4TERMINATEDAlcoholism and Schizophrenia: Effects of Clozapine
NCT00169039PHASE4TERMINATEDClozapine Versus Chlorpromazine for Treatment-Unresponsive Schizophrenia
NCT00169065PHASE4COMPLETEDEffectiveness of Clozapine Versus Olanzapine for Treatment-resistant Schizophrenia
NCT00169091PHASE4TERMINATEDClozapine Versus Haloperidol for Treating the First Episode of Schizophrenia
NCT00176423PHASE4COMPLETEDEfficacy Study of Galantamine for Cognitive Impairments in Schizophrenia
NCT00176436PHASE4COMPLETEDAtomoxetine for Treatment of Weight Gain in Olanzapine or Clozapine Patients
NCT00177008PHASE4COMPLETEDAripiprazole for the Treatment of Schizophrenia With Co-Morbid Social Anxiety