TMEM201

gene
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Also known as RP13-15M17.2NET5Ima1SAMP1

Summary

TMEM201 (transmembrane protein 201, HGNC:33719) is a protein-coding gene on chromosome 1p36.22, encoding Transmembrane protein 201 (Q5SNT2). Critical regulator of angiogenesis and endothelial cell (EC) migration.

Predicted to enable actin filament binding activity and lamin binding activity. Involved in several processes, including centrosome localization; positive regulation of endothelial cell migration; and protein localization to nuclear envelope. Located in cortical endoplasmic reticulum; nuclear inner membrane; and spindle pole centrosome.

Source: NCBI Gene 199953 — RefSeq curated summary.

At a glance

  • Clinical variants (ClinVar): 121 total
  • MANE Select transcript: NM_001130924

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:33719
Approved symbolTMEM201
Nametransmembrane protein 201
Location1p36.22
Locus typegene with protein product
StatusApproved
AliasesRP13-15M17.2, NET5, Ima1, SAMP1
Ensembl geneENSG00000188807
Ensembl biotypeprotein_coding
Entrez199953

Gene structure

Transcript identifiers

Ensembl transcripts: 8 — 6 protein_coding, 1 nonsense_mediated_decay, 1 protein_coding_CDS_not_defined

ENST00000340305, ENST00000340381, ENST00000416541, ENST00000508400, ENST00000510900, ENST00000857597, ENST00000928149, ENST00000928150

RefSeq mRNA: 2 — MANE Select: NM_001130924 NM_001010866, NM_001130924

CCDS: CCDS30579, CCDS44055

Canonical transcript exons

ENST00000340381 — 11 exons

ExonStartEnd
ENSE0000136569796011059601454
ENSE0000137511896075579607789
ENSE0000137849296105069610805
ENSE0000137860795984499598625
ENSE0000138591696020699602272
ENSE0000138824095968599597053
ENSE0000147375496098409609911
ENSE0000168094495958909596010
ENSE0000185499796129869614877
ENSE0000350215996117539611890
ENSE0000384729495889119589043

Expression profiles

Bgee: expression breadth ubiquitous, 218 present calls, max score 95.97.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 10.9933 / max 100.8374, expressed in 1684 samples.

FANTOM5 promoters (5 alternative TSS)

Promoter IDTPM avgSamples expressed
5245.88491484
5222.55971103
5212.29241025
5230.2379109
5250.01845

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
cardiac muscle of right atriumUBERON:000337995.97silver quality
left ventricle myocardiumUBERON:000656695.73silver quality
quadriceps femorisUBERON:000137792.58gold quality
vastus lateralisUBERON:000137992.24gold quality
kidney epitheliumUBERON:000481991.85silver quality
gastrocnemiusUBERON:000138891.09gold quality
deltoidUBERON:000147690.31silver quality
skeletal muscle tissueUBERON:000113490.27gold quality
skeletal muscle tissue of biceps brachiiUBERON:000450290.19gold quality
skeletal muscle tissue of rectus abdominisUBERON:000451190.19silver quality
hindlimb stylopod muscleUBERON:000425290.05gold quality
myocardiumUBERON:000234989.71silver quality
muscle of legUBERON:000138389.70gold quality
body of tongueUBERON:001187689.58gold quality
biceps brachiiUBERON:000150789.49gold quality
muscle tissueUBERON:000238589.08gold quality
tibialis anteriorUBERON:000138588.10silver quality
secondary oocyteCL:000065588.04gold quality
oocyteCL:000002387.85gold quality
epithelial cell of pancreasCL:000008387.65gold quality
tongueUBERON:000172387.13silver quality
cerebellar vermisUBERON:000472086.86gold quality
substantia nigra pars reticulataUBERON:000196686.47silver quality
ventral tegmental areaUBERON:000269186.46silver quality
apex of heartUBERON:000209886.40gold quality
vena cavaUBERON:000408785.48silver quality
buccal mucosa cellCL:000233685.43silver quality
inferior vagus X ganglionUBERON:000536385.38silver quality
heart right ventricleUBERON:000208085.21gold quality
superior surface of tongueUBERON:000737184.95silver quality

Single-cell (SCXA)

Detected in 2 experiment(s), a significant marker in 0.

ExperimentMarker?Max mean expression
E-ENAD-17no93.59
E-ANND-3no1.91

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

87 targeting TMEM201, 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-5692A100.0074.406850
HSA-MIR-6856-5P100.0065.471298
HSA-MIR-8485100.0077.574731
HSA-MIR-6758-5P100.0066.211470
HSA-MIR-4283100.0066.422097
HSA-MIR-4481100.0066.421669
HSA-MIR-3605-5P99.9667.12932
HSA-MIR-185-3P99.9567.011743
HSA-MIR-6721-5P99.9368.922981
HSA-MIR-6783-3P99.8967.922059
HSA-MIR-1343-3P99.8966.781815
HSA-MIR-449299.8768.253611
HSA-MIR-221-5P99.8665.451052
HSA-MIR-807399.8665.211118
HSA-MIR-4728-5P99.8569.394718
HSA-MIR-6785-5P99.8268.684428
HSA-MIR-6756-5P99.8267.972466
HSA-MIR-6842-5P99.8067.541587
HSA-MIR-7110-5P99.8067.841712
HSA-MIR-92A-2-5P99.7567.012164
HSA-MIR-149-3P99.7268.223963
HSA-MIR-4524A-3P99.7266.852406
HSA-MIR-6883-5P99.6968.053785
HSA-MIR-472999.6972.184233
HSA-MIR-6766-5P99.6867.702325
HSA-MIR-447099.6669.351767
HSA-MIR-3158-5P99.6567.511763
HSA-MIR-613299.6065.831554
HSA-MIR-6836-5P99.6065.621538
HSA-MIR-6752-5P99.5967.321243

Literature-anchored findings (GeneRIF, showing 8)

  • characterization of a transmembrane protein of the nuclear envelope that we name spindle-associated membrane protein 1 (Samp1); Samp1 defines a specific membrane domain associated with the mitotic spindle (PMID:19494128)
  • the nucleoplasmic domains of Samp1 and Emerin can bind directly to each other. (PMID:24950247)
  • Samp1 is involved in early differentiation of induced pluripotent stem cells. (PMID:28668644)
  • the mobility of YFP-Emerin was higher in Samp1 knock out cells and lower in cells overexpressing Samp1, suggesting that Samp1 significantly attenuates the mobility of Emerin in the nuclear envelope. The affinity between Samp1 and Emerin is decreased in the presence of Ran, suggesting that Ran attenuates the interaction between Samp1 and Emerin. (PMID:29510091)
  • Authors show that Samp1 is involved in the recruitment of HAUS6 and gamma-tubulin to the mitotic spindle. Samp1 is the first inner nuclear membrane protein shown to have a function in mitotic spindle assembly. (PMID:29514856)
  • We also found that peripheral heterochromatin depended on the levels of the inner nuclear membrane protein Samp1, suggesting an important role in promoting peripheral heterochromatin. Taken together, FRIC is a powerful and robust new tool to study dynamic chromatin redistribution in live cells. (PMID:30793190)
  • Inner nuclear membrane protein TMEM201 maintains endothelial cell migration and angiogenesis by interacting with the LINC complex. (PMID:35311970)
  • Characterization of the Clinical Significance and Immunological Landscapes of a Novel TMEMs Signature in Hepatocellular Carcinoma and the Contribution of TMEM201 to Hepatocarcinogenesis. (PMID:37373430)

Cross-species orthologs

2 orthologs

OrganismSymbolGene ID
mus_musculusTmem201ENSMUSG00000044700
rattus_norvegicusTmem201ENSRNOG00000023152

Protein

Protein identifiers

Transmembrane protein 201Q5SNT2 (reviewed: Q5SNT2)

Alternative names: Spindle-associated membrane protein 1

All UniProt accessions (3): Q5SNT2, H0Y4R5, H0Y994

UniProt curated annotations — full annotation on UniProt →

Function. Critical regulator of angiogenesis and endothelial cell (EC) migration. Promotes the migration of endothelial cells, which is essential for angiogenesis. Interacts with the linker of nucleoskeleton and cytoskeleton (LINC) complex, which plays a vital role in connecting the cell’s cytoskeleton to the nuclear envelope. This interaction is essential for maintaining cellular structure and facilitating the movement of endothelial cells, which is critical for proper vascular development. Involved in nuclear movement during fibroblast polarization and migration. Overexpression can recruit Ran GTPase to the nuclear periphery. May define a distinct membrane domain in the vicinity of the mitotic spindle. Involved in the organization of the nuclear envelope implicating EMD, SUN1 and A-type lamina.

Subunit / interactions. Interacts with SUN2 and LMNA. May bind to Ran GTPase; has a greater affinity for Ran-GTP over Ran-GDP. Interacts with EMD.

Subcellular location. Nucleus inner membrane Nucleus inner membrane. Cytoplasm. Cytoskeleton. Spindle pole.

Similarity. Belongs to the TMEM201 family.

Isoforms (2)

UniProt IDNamesCanonical?
Q5SNT2-11yes
Q5SNT2-22, SAMP1

RefSeq proteins (2): NP_001010866, NP_001124396* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR018617Ima1_NDomain
IPR018861TMEM201_CDomain
IPR040041TMEM201Family

Pfam: PF09779, PF10476

UniProt features (27 total): modified residue 9, topological domain 6, transmembrane region 5, splice variant 2, mutagenesis site 2, chain 1, region of interest 1, compositionally biased region 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q5SNT2-F159.860.22

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 (9): 1, 441, 444, 450, 454, 466, 477, 480, 529

Mutagenesis-validated functional residues (2):

PositionPhenotype
48impairs organization of the nuclear envelope; abolishes its localization to the nuclear envelope; impairs localization o
121abolishes localization to the nuclear envelopee; abolishes its localization to the nuclear envelope; impairs localizatio

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 139 (showing top): GOBP_ORGANELLE_TRANSPORT_ALONG_MICROTUBULE, GOCC_MICROTUBULE_ORGANIZING_CENTER, GOBP_AMEBOIDAL_TYPE_CELL_MIGRATION, GOBP_POSITIVE_REGULATION_OF_ENDOTHELIAL_CELL_MIGRATION, GOBP_REGULATION_OF_ENDOTHELIAL_CELL_MIGRATION, GOBP_NUCLEUS_ORGANIZATION, GOCC_CENTROSOME, GOBP_BLOOD_VESSEL_MORPHOGENESIS, GOBP_NUCLEUS_LOCALIZATION, LIAO_METASTASIS, GOBP_ENDOMEMBRANE_SYSTEM_ORGANIZATION, LASTOWSKA_NEUROBLASTOMA_COPY_NUMBER_DN, GOBP_PROTEIN_LOCALIZATION_TO_ORGANELLE, GOMF_ACTIN_BINDING, GOBP_NUCLEAR_ENVELOPE_ORGANIZATION

GO Biological Process (8): angiogenesis (GO:0001525), nuclear envelope organization (GO:0006998), positive regulation of endothelial cell migration (GO:0010595), fibroblast migration (GO:0010761), nuclear migration along microtubule (GO:0030473), centrosome localization (GO:0051642), protein localization to nuclear envelope (GO:0090435), nuclear migration (GO:0007097)

GO Molecular Function (3): lamin binding (GO:0005521), actin filament binding (GO:0051015), protein binding (GO:0005515)

GO Cellular Component (10): spindle pole (GO:0000922), nuclear envelope (GO:0005635), nuclear inner membrane (GO:0005637), nuclear membrane (GO:0031965), nucleus (GO:0005634), cytoplasm (GO:0005737), cytoskeleton (GO:0005856), membrane (GO:0016020), spindle pole centrosome (GO:0031616), cortical endoplasmic reticulum (GO:0032541)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure3
nucleus2
blood vessel morphogenesis1
anatomical structure formation involved in morphogenesis1
nucleus organization1
endomembrane system organization1
membrane organization1
regulation of endothelial cell migration1
positive regulation of cell migration1
endothelial cell migration1
ameboidal-type cell migration1
nuclear migration1
organelle transport along microtubule1
microtubule organizing center localization1
protein localization to nucleus1
intracellular transport1
nucleus localization1
establishment of organelle localization1
protein binding1
actin binding1
protein-containing complex binding1
binding1
spindle1
endomembrane system1
organelle envelope1
organelle inner membrane1
nuclear membrane1
nuclear envelope1
organelle membrane1
intracellular membrane-bounded organelle1
intracellular anatomical structure1
intracellular membraneless organelle1
spindle pole1
centrosome1
cell cortex1
endoplasmic reticulum tubular network1

Protein interactions and networks

STRING

744 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
TMEM201SUN1O94901950
TMEM201EMDP50402816
TMEM201SUN2Q9UH99808
TMEM201LMNB1P20700723
TMEM201BANF1O75531640
TMEM201FHOD1Q9Y613634
TMEM201LEMD3Q9Y2U8578
TMEM201TOR1AO14656563
TMEM201PLPP7Q8NBV4525
TMEM201TMEM38AQ9H6F2517
TMEM201TMEM214Q6NUQ4480
TMEM201SUN3Q8TAQ9450
TMEM201MADCAM1Q13477446
TMEM201SYNE2Q8WXH0436
TMEM201LEMD2Q8NC56434

IntAct

81 interactions, top by confidence:

ABTypeScore
STX18NBASpsi-mi:“MI:0914”(association)0.810
CFTRESYT2psi-mi:“MI:2364”(proximity)0.710
B3GNT3PGRMC1psi-mi:“MI:0914”(association)0.670
SLC39A4TMEM120Bpsi-mi:“MI:0914”(association)0.530
APLNRSLC33A1psi-mi:“MI:0914”(association)0.530
CXCR4FANCApsi-mi:“MI:0914”(association)0.530
APBA3CLSTN1psi-mi:“MI:0914”(association)0.530
TaxTAX1BP3psi-mi:“MI:0914”(association)0.520
ALKPIK3R2psi-mi:“MI:0914”(association)0.420
GPC1SNAP23psi-mi:“MI:0915”(physical association)0.400
GPC1GANABpsi-mi:“MI:0915”(physical association)0.400
Rab5bBLTP3Bpsi-mi:“MI:0914”(association)0.350
SYNPOLMO7psi-mi:“MI:0914”(association)0.350
RIPK4VWA8psi-mi:“MI:0914”(association)0.350
UBAC2TUB4qpsi-mi:“MI:0914”(association)0.350
SLC16A11ESYT2psi-mi:“MI:0914”(association)0.350
NUAK1ZSWIM8psi-mi:“MI:0914”(association)0.350
STYK1XPO1psi-mi:“MI:0914”(association)0.350
CANXHLA-Apsi-mi:“MI:0914”(association)0.350
TTMPTMEM223psi-mi:“MI:0914”(association)0.350
CRELD1TMEM223psi-mi:“MI:0914”(association)0.350
TEX28NBASpsi-mi:“MI:0914”(association)0.350
GPR182SLC12A8psi-mi:“MI:0914”(association)0.350
PCDHB3ESYT2psi-mi:“MI:0914”(association)0.350
GP9ESYT2psi-mi:“MI:0914”(association)0.350
CHRNA1ESYT2psi-mi:“MI:0914”(association)0.350
TSPAN15TMEM223psi-mi:“MI:0914”(association)0.350
PIGHILVBLpsi-mi:“MI:0914”(association)0.350
TTMPNBASpsi-mi:“MI:0914”(association)0.350
PCDHB7TMEM131Lpsi-mi:“MI:0914”(association)0.350

BioGRID (183): TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Proximity Label-MS), TMEM201 (Proximity Label-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Reconstituted Complex), TMEM201 (Two-hybrid), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS), TMEM201 (Affinity Capture-MS)

ESM2 similar proteins: A0PJX4, A2A8U2, A4D2P6, A6QM06, D4A6L0, E1BBQ2, O15079, O60320, P12755, P49797, P97260, Q0D2I5, Q12770, Q15884, Q1RMB5, Q3TS39, Q3UPR0, Q4FZH1, Q5MNU5, Q5SNT2, Q5T848, Q5XKK7, Q60698, Q6A044, Q7T0Z7, Q7TMB0, Q7TPB0, Q810F0, Q86XR5, Q8BX43, Q8BXL9, Q8C419, Q8CA71, Q8K064, Q8K2Y3, Q8N114, Q8NDY8, Q8WV15, Q91WM6, Q92537

Diamond homologs: A2A8U2, A4IG66, Q22747, Q32PF0, Q5SNT2

SIGNOR signaling

0 interactions.

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 125 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
Metal ion SLC transporters537.1×7e-05
Downstream TCR signaling69.5×4e-03
Transport of small molecules123.7×6e-03

GO biological processes:

GO termPartnersFoldFDR
intracellular zinc ion homeostasis522.3×6e-04
potassium ion transmembrane transport67.5×8e-03

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance93
Likely benign7
Benign7

Top pathogenic / likely-pathogenic (0)

SpliceAI

2064 predictions. Top by Δscore:

VariantEffectΔscore
1:9589040:GGAG:Gdonor_gain1.0000
1:9589041:GAG:Gdonor_gain1.0000
1:9589041:GAGG:Gdonor_gain1.0000
1:9589042:AGGT:Adonor_loss1.0000
1:9589044:GT:Gdonor_loss1.0000
1:9589045:T:Gdonor_loss1.0000
1:9595885:CACA:Cacceptor_loss1.0000
1:9595888:A:AGacceptor_gain1.0000
1:9595888:A:Gacceptor_loss1.0000
1:9595888:AG:Aacceptor_gain1.0000
1:9595888:AGGAT:Aacceptor_gain1.0000
1:9595889:G:GAacceptor_gain1.0000
1:9595889:GG:Gacceptor_gain1.0000
1:9595889:GGAT:Gacceptor_gain1.0000
1:9595889:GGATG:Gacceptor_gain1.0000
1:9595991:A:AGdonor_gain1.0000
1:9595992:G:GGdonor_gain1.0000
1:9596007:GGAG:Gdonor_gain1.0000
1:9596007:GGAGG:Gdonor_loss1.0000
1:9596008:G:GTdonor_gain1.0000
1:9596008:GAGG:Gdonor_loss1.0000
1:9596009:AG:Adonor_loss1.0000
1:9596857:AGAAC:Aacceptor_gain1.0000
1:9596858:GAAC:Gacceptor_gain1.0000
1:9596858:GAACG:Gacceptor_gain1.0000
1:9597050:GGAG:Gdonor_gain1.0000
1:9597051:G:GTdonor_gain1.0000
1:9597051:GAGG:Gdonor_loss1.0000
1:9597052:AGG:Adonor_loss1.0000
1:9597053:GGTG:Gdonor_loss1.0000

AlphaMissense

4254 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
1:9595918:T:CC48R1.000
1:9595919:G:AC48Y1.000
1:9595920:C:GC48W1.000
1:9595924:T:CF50L1.000
1:9595926:C:AF50L1.000
1:9595926:C:GF50L1.000
1:9595969:T:AW65R1.000
1:9595969:T:CW65R1.000
1:9595971:G:CW65C1.000
1:9595971:G:TW65C1.000
1:9595975:T:CC67R1.000
1:9596002:T:CF76L1.000
1:9596003:T:CF76S1.000
1:9596004:C:AF76L1.000
1:9596004:C:GF76L1.000
1:9595918:T:AC48S0.999
1:9595919:G:CC48S0.999
1:9595919:G:TC48F0.999
1:9595921:T:AW49R0.999
1:9595921:T:CW49R0.999
1:9595923:G:CW49C0.999
1:9595923:G:TW49C0.999
1:9595925:T:CF50S0.999
1:9595925:T:GF50C0.999
1:9595927:T:AC51S0.999
1:9595927:T:CC51R0.999
1:9595928:G:AC51Y0.999
1:9595928:G:CC51S0.999
1:9595928:G:TC51F0.999
1:9595929:C:GC51W0.999

dbSNP variants (sampled 300 via entrez): RS1000135174 (1:9606119 G>A), RS1000199329 (1:9605107 G>A), RS1000203256 (1:9612361 C>A), RS1000252564 (1:9612756 C>T), RS1000313837 (1:9587806 C>T), RS1000393766 (1:9607147 G>A), RS1000608211 (1:9591932 G>A), RS1000682237 (1:9597309 G>A), RS1000687587 (1:9596778 G>A,C,T), RS1000768264 (1:9592688 C>A,T), RS1000841998 (1:9592857 G>A), RS1000870568 (1:9607356 C>T), RS1000943834 (1:9612587 G>T), RS1001114440 (1:9597533 G>C), RS1001241281 (1:9604518 C>G,T)

Disease associations

OMIM: gene `` | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

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

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

ChemicalActions (top 5)PubMed papers
sodium arseniteaffects cotreatment, increases abundance, increases expression, decreases expression4
Acetaminophenincreases expression2
Arsenicaffects methylation, affects cotreatment, increases abundance, increases expression2
Estradiolincreases expression2
Valproic Acidincreases expression, increases methylation2
afuresertibdecreases expression1
FR900359affects phosphorylation1
TAK-243decreases sumoylation1
dicrotophosincreases expression1
bisphenol Adecreases expression1
zinc chromatedecreases expression, increases abundance1
manganese chlorideincreases abundance, increases expression, affects cotreatment1
benzo(e)pyrenedecreases methylation1
potassium chromate(VI)increases expression1
aflatoxin B2decreases methylation1
chromium hexavalent ionincreases abundance, decreases expression1
abrinedecreases expression1
2,2’,4,4’-tetrabromodiphenyl etherdecreases expression1
Grape Seed Proanthocyanidinsaffects cotreatment, increases expression1
NSC 689534decreases expression, affects binding1
Sunitinibincreases expression1
Benzo(a)pyreneincreases expression1
Caffeineaffects phosphorylation1
Calcitrioldecreases expression, affects cotreatment1
Catechinaffects cotreatment, increases expression1
Copperaffects binding, decreases expression1
Dichlorodiphenyl Dichloroethyleneincreases expression1
Doxorubicindecreases expression1
Formaldehydedecreases expression1
Ivermectindecreases expression1

Clinical trials (associated diseases)

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

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.