Protein Name:
Eukaryotic translation initiation factor 3 subunit I
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UniprotKB/SwissProt ID: Q13347 (Q13347)
Gene Name:
EIF3I
Organism: Homo sapiens (Human)
Function: Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is required for several steps in the initiation of protein synthesis (PubMed:17581632, PubMed:25849773, PubMed:27462815). The eIF-3 complex associates with the 40S ribosome and facilitates the recruitment of eIF-1, eIF-1A, eIF-2:GTP:methionyl-tRNAi and eIF-5 to form the 43S pre-initiation complex (43S PIC). The eIF-3 complex stimulates mRNA recruitment to the 43S PIC and scanning of the mRNA for AUG recognition. The eIF-3 complex is also required for disassembly and recycling of post-termination ribosomal complexes and subsequently prevents premature joining of the 40S and 60S ribosomal subunits prior to initiation (PubMed:17581632). The eIF-3 complex specifically targets and initiates translation of a subset of mRNAs involved in cell proliferation, including cell cycling, differentiation and apoptosis, and uses different modes of RNA stem-loop binding to exert either translational activation or repression (PubMed:25849773)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Cytoplasm
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of Q13347
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
144 |
DNNEPYMKIP C NDSKITSAVW |
CCCEEECCCC C EEEEEEECCC |
11.42% |
19483679
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| 2 |
160 |
TSAVWGPLGE C IIAGHESGEL |
CCCEEECCCC C EEEEEEECCC |
2.3% |
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| 3 |
57 |
TYMGHTGAVW C VDADWDTKHV |
CCCEEECCCC C EEEEEEECCC |
1.27% |
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| 4 |
76 |
HVLTGSADNS C RLWDCETGKQ |
CCCEEECCCC C EEEEEEECCC |
5.34% |
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| 5 |
81 |
SADNSCRLWD C ETGKQLALLK |
CCCEEECCCC C EEEEEEECCC |
3.22% |
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| 6 |
99 |
LLKTNSAVRT C GFDFGGNIIM |
CCCEEECCCC C EEEEEEECCC |
3.42% |
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