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Query author contributions in Reactome

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Details on Person UniProt:Q28250 SPCS2

Class:IdReferenceGeneProduct:445315
_chainChangeLoginitiator methionine:1 added on Sat February 7 2015;chain:2-226 added on Sat February 7 2015;initiator methionine:1 for 445315 removed on Fri Nov 03 2023;initiator methionine: for 445315 added on Fri Nov 03 2023;initiator methionine: for 445315 removed on Fri Aug 15 2025;initiator methionine:1 for 445315 added on Fri Aug 15 2025
_displayNameUniProt:Q28250 SPCS2
_timestamp2025-08-15 21:11:21
chaininitiator methionine:1
chain:2-226
checksum85830E5484593176
commentFUNCTION Component of the signal peptidase complex (SPC) which catalyzes the cleavage of N-terminal signal sequences from nascent proteins as they are translocated into the lumen of the endoplasmic reticulum (PubMed:3511473). Enhances the enzymatic activity of SPC and facilitates the interactions between different components of the translocation site (By similarity).SUBUNIT Component of the signal peptidase complex paralog A (SPC-A) composed of a catalytic subunit SEC11A and three accessory subunits SPCS1, SPCS2 and SPCS3 (PubMed:3511473). Component of the signal peptidase complex paralog C (SPC-C) composed of a catalytic subunit SEC11C and three accessory subunits SPCS1, SPCS2 and SPCS3 (PubMed:3511473). Within the complex, interacts with SEC11A or SEC11C and SPCS1 (By similarity). The complex induces a local thinning of the ER membrane which is used to measure the length of the signal peptide (SP) h-region of protein substrates (By similarity). This ensures the selectivity of the complex towards h-regions shorter than 18-20 amino acids (By similarity).SUBCELLULAR LOCATION Belongs to the SPCS2 family.
created[InstanceEdit:445298] May, B, 2009-10-29
descriptionrecommendedName: Signal peptidase complex subunit 2 alternativeName: Microsomal signal peptidase 25 kDa subunit shortName: SPase 25 kDa subunit
geneNameSPCS2
SPC25
identifierQ28250
isSequenceChangedFALSE
keywordAcetylation
Direct protein sequencing
Endoplasmic reticulum
Membrane
Reference proteome
Transmembrane
Transmembrane helix
modified[InstanceEdit:445324] May, B, 2009-10-29
[InstanceEdit:447347] Kanapin, AA
[InstanceEdit:525883] Kanapin, AA
[InstanceEdit:613449] Kanapin, AA
[InstanceEdit:797602] Kanapin, AA
[InstanceEdit:937368] Yung, CK
[InstanceEdit:1042053] Yung, CK
[InstanceEdit:1220657] Yung, CK
[InstanceEdit:1300696] Yung, CK
[InstanceEdit:1301627] Yung, CK
[InstanceEdit:1551960] Weiser, JD
[InstanceEdit:1995863] Weiser, JD
[InstanceEdit:2132304] Weiser, JD
[InstanceEdit:2265580] Weiser, JD
[InstanceEdit:5634237] Weiser, JD
[InstanceEdit:5673015] Weiser, JD
[InstanceEdit:8856987] Weiser, JD
[InstanceEdit:9037114] Weiser, JD
[InstanceEdit:9637257] Weiser, JD
[InstanceEdit:9676415] Weiser, JD
[InstanceEdit:9773244] Weiser, Joel
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9963647] Weiser, Joel, 2025-08-15
nameSPCS2
referenceDatabase[ReferenceDatabase:2] UniProt
secondaryIdentifierSPCS2_CANLF
sequenceLength226
species[Species:49646] Canis familiaris
(referenceEntity)[EntityWithAccessionedSequence:445295] SPCS2_CANFA [endoplasmic reticulum membrane] [Canis familiaris]
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No pathways have been reviewed or authored by UniProt:Q28250 SPCS2 (445315)