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Details on Person UniProt:P55259 GP2

Class:IdReferenceGeneProduct:55816
_chainChangeLogsignal peptide:1-28 added on Sat February 7 2015;chain:29-512 added on Sat February 7 2015;propeptide:513-537 added on Sat February 7 2015
_displayNameUniProt:P55259 GP2
_timestamp2026-02-20 21:49:24
chainsignal peptide:1-28
chain:29-512
propeptide:513-537
checksum8A6B6A0FC64F50B8
commentFUNCTION Functions as an intestinal M-cell transcytotic receptor specific for type-I-piliated bacteria that participates in the mucosal immune response toward these bacteria. At the apical membrane of M-cells it binds fimH, a protein of the bacteria type I pilus tip. Internalizes bound bacteria, like E.coli and S.typhimurium, from the lumen of the intestine and delivers them, through M-cells, to the underlying organized lymphoid follicles where they are captured by antigen-presenting dendritic cells to elicit a mucosal immune response.SUBUNIT Interacts with SYCN (By similarity). Interacts with bacterial adhesin fimH (PubMed:19907495, PubMed:35273390).INTERACTION Secreted, after cleavage, in the pancreatic juice.ALTERNATIVE PRODUCTS Expressed in pancreas (at protein level) (PubMed:10760606, PubMed:8666297). Specifically expressed by M (microfold) cells which are atypical epithelial cells of the intestine (at protein level) (PubMed:19907495).DOMAIN Each ZP domain consists of an N-terminal (ZP-N) and C-terminal (ZP-C) region connected by a flexible linker; the linker allows the ZP domain to wrap around the ZP-C subdomain of the preceding subunit.PTM N-glycosylated. Glycosylated Asn-65 may be required for interaction with bacterial adhesin fimH.CAUTION It is uncertain whether Met-1 or Met-8 is the initiator.
descriptionrecommendedName: fullName evidence="20"Pancreatic secretory granule membrane major glycoprotein GP2 alternativeName: fullName evidence="20"Pancreatic zymogen granule membrane protein GP-2 alternativeName: ZAP75
geneNameGP2
identifierP55259
isSequenceChangedFALSE
keyword3D-structure
Alternative splicing
Cell membrane
Cytoplasmic vesicle
Disulfide bond
EGF-like domain
Endosome
Glycoprotein
GPI-anchor
Immunity
Innate immunity
Lipoprotein
Membrane
Proteomics identification
Receptor
Reference proteome
Secreted
Signal
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9917590] Weiser, Joel, 2024-08-09
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameGP2
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8997187] ENSEMBL:ENSG00000169347 GP2 [Homo sapiens]
secondaryIdentifierGP2_HUMAN
A6NFM9
A6NJA8
Q13338
Q9UIF1
sequenceLength537
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:148105] UniProt:P55259-2 GP2 [Homo sapiens]
[ReferenceIsoform:385173] UniProt:P55259-3 GP2 [Homo sapiens]
[ReferenceIsoform:385174] UniProt:P55259-4 GP2 [Homo sapiens]
[ReferenceIsoform:404440] UniProt:P55259-1 GP2 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:8940416] GP2 [plasma membrane] [Homo sapiens]
[EntityWithAccessionedSequence:8940732] GPI-GP2 [plasma membrane] [Homo sapiens]
[EntityWithAccessionedSequence:8941111] cleaved GPI-GP2 [extracellular region] [Homo sapiens]
[EntityWithAccessionedSequence:9922809] GP2 [zymogen granule] [Homo sapiens]
(referenceSequence)[GroupModifiedResidue:8940784] L-asparagine amide (GPI-anchor amidated amino acid carboxyl end residue(1−)) at 512
[GroupModifiedResidue:8941079] L-asparagine amide (6-O-(2-aminoethylphosphono)-alpha-D-Man-(1->2)-alpha-D-Man-(1->6)-alpha-D-Man-(1->4)-alpha-D-GlcN-(1->6)-D-myo-inositol group) at 512
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No pathways have been reviewed or authored by UniProt:P55259 GP2 (55816)