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Overview

Uniprot IDP49770
Protein NameTranslation initiation factor eIF2B subunit beta
Gene NameEIF2B2
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
7 *MPGSAAKGSELSER

Function

Acts as a component of the translation initiation factor 2B (eIF2B) complex, which catalyzes the exchange of GDP for GTP on eukaryotic initiation factor 2 (eIF2) gamma subunit (PubMed:25858979, PubMed:27023709, PubMed:31048492). Its guanine nucleotide exchange factor activity is repressed when bound to eIF2 complex phosphorylated on the alpha subunit, thereby limiting the amount of methionyl-initiator methionine tRNA available to the ribosome and consequently global translation is repressed (PubMed:25858979, PubMed:31048492)

Protein Sequence

10 MPGSAAKGSE 20 LSERIESFVE 30 TLKRGGGPRS 40 SEEMARETLG 50 LLRQIITDHR 60 WSNAGELMEL 70 IRREGRRMTA 80 AQPSETTVGN 90 MVRRVLKIIR 100 EEYGRLHGRS 110 DESDQQESLH 120 KLLTSGGLNE 130 DFSFHYAQLQ 140 SNIIEAINEL 150 LVELEGTMEN 160 IAAQALEHIH 170 SNEVIMTIGF 180 SRTVEAFLKE 190 AARKRKFHVI 200 VAECAPFCQG 210 HEMAVNLSKA 220 GIETTVMTDA 230 AIFAVMSRVN 240 KVIIGTKTIL 250 ANGALRAVTG 260 THTLALAAKH 270 HSTPLIVCAP 280 MFKLSPQFPN 290 EEDSFHKFVA 300 PEEVLPFTEG 310 DILEKVSVHC 320 PVFDYVPPEL 330 ITLFISNIGG 340 NAPSYIYRLM 350 SELYHPDDHV L

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005851 eukaryotic translation initiation factor 2B complex
Molecular Function GO:0005524 ATP binding
Molecular Function GO:0005525 GTP binding
Molecular Function GO:0005085 guanyl-nucleotide exchange factor activity
Molecular Function GO:0003743 translation initiation factor activity
Biological Process GO:0007417 central nervous system development
Biological Process GO:0002183 cytoplasmic translational initiation
Biological Process GO:0042552 myelination
Biological Process GO:0014003 oligodendrocyte development
Biological Process GO:0001541 ovarian follicle development
Biological Process GO:0045948 positive regulation of translational initiation
Biological Process GO:0006446 regulation of translational initiation
Biological Process GO:0009749 response to glucose
Biological Process GO:0009408 response to heat
Biological Process GO:0043434 response to peptide hormone
Biological Process GO:0050852 T cell receptor signaling pathway
Biological Process GO:0006413 translational initiation

Reference

[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.