Protein Name:
Protein transport protein Sec61 subunit alpha isoform 1
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UniprotKB/SwissProt ID: P61620 (P61620)
Gene Name:
Sec61a1
Organism: Mus musculus (Mouse)
Function: Component of SEC61 channel-forming translocon complex that mediates transport of signal peptide-containing precursor polypeptides across the endoplasmic reticulum (ER). Forms a ribosome receptor and a gated pore in the ER membrane, both functions required for cotranslational translocation of nascent polypeptides. May cooperate with auxiliary protein SEC62, SEC63 and HSPA5/BiP to enable post-translational transport of small presecretory proteins. The SEC61 channel is also involved in ER membrane insertion of transmembrane proteins: it mediates membrane insertion of the first few transmembrane segments of proteins, while insertion of subsequent transmembrane regions of multi-pass membrane proteins is mediated by the multi-pass translocon (MPT) complex. The SEC61 channel cooperates with the translocating protein TRAM1 to import nascent proteins into the ER. Controls the passive efflux of calcium ions from the ER lumen to the cytosol through SEC61 channel, contributing to the maintenance of cellular calcium homeostasis (By similarity). Plays a critical role in nephrogenesis, specifically at pronephros stage (PubMed:27392076)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Endoplasmic reticulum membrane
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of P61620
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
13 |
IKFLEVIKPF C VILPEIQKPE |
CCHHHHHHHH H HEEECCCCCC |
2.23% |
22178444
20925432
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