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Entry version 126 (10 Feb 2021)
Sequence version 2 (23 Jan 2007)
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Protein

Eukaryotic translation initiation factor 2 subunit 1

Gene

Eif2s1

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S pre-initiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another round of initiation, the GDP bound to eIF-2 must exchange with GTP by way of a reaction catalyzed by eIF-2B. EIF2S1/eIF-2-alpha is a key component of the integrated stress response (ISR), required for adaptation to various stress: phosphorylation by metabolic-stress sensing protein kinases (EIF2AK1/HRI, EIF2AK2/PKR, EIF2AK3/PERK and EIF2AK4/GCN2) in response to stress converts EIF2S1/eIF-2-alpha in a global protein synthesis inhibitor, leading to a attenuation of cap-dependent translation, while concomitantly initiating the preferential translation of ISR-specific mRNAs, such as the transcriptional activator ATF4, and hence allowing ATF4-mediated reprogramming.By similarity

Caution

This gene should not be confused with EIF2A, with which it shares the alias EIF2A. Although both of these proteins function in binding initiator tRNA to the 40S ribosomal subunit, the eIF2 complex requires GTP, whereas the EIF2A protein does so in a codon-dependent manner.Curated

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Activity is regulated by phosphorylation at Ser-49 and Ser-52, which stabilizes the eIF-2/GDP/eIF-2B complex and prevents the eIF-2B-mediated exchange of GDP for GTP, thereby preventing the formation of the 43S pre-initiation complex (PIC). This results in the global attenuation of 5' cap-dependent protein synthesis and concomitant translation of ISR-specific mRNAs that contain a short upstream open reading frame (uORF) in their 5' UTR, such as ATF4, ATF5, DDIT3/CHOP and PPP1R15A/GADD34.By similarity

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionInitiation factor, RNA-binding
Biological processProtein biosynthesis, Translation regulation

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-RNO-156827, L13a-mediated translational silencing of Ceruloplasmin expression
R-RNO-381042, PERK regulates gene expression
R-RNO-382556, ABC-family proteins mediated transport
R-RNO-72649, Translation initiation complex formation
R-RNO-72695, Formation of the ternary complex, and subsequently, the 43S complex
R-RNO-72702, Ribosomal scanning and start codon recognition
R-RNO-72706, GTP hydrolysis and joining of the 60S ribosomal subunit
R-RNO-72731, Recycling of eIF2:GDP

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Eukaryotic translation initiation factor 2 subunit 1
Alternative name(s):
Eukaryotic translation initiation factor 2 subunit alpha
Short name:
eIF-2-alpha
Short name:
eIF-2A
Short name:
eIF-2alpha
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:Eif2s1
Synonyms:Eif2a
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiRattus norvegicus (Rat)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri10116 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002494 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 6

Organism-specific databases

Rat genome database

More...
RGDi
620963, Eif2s1

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001373861 – 315Eukaryotic translation initiation factor 2 subunit 1Add BLAST315

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei49Phosphoserine; by HRIBy similarity1
Modified residuei52PhosphoserineBy similarity1
Modified residuei141N6-acetyllysineBy similarity1
Modified residuei158PhosphoserineBy similarity1
Modified residuei279PhosphothreonineBy similarity1
Modified residuei281PhosphothreonineBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Phosphorylation at Ser-49 and Ser-52 stabilizes the eIF-2/GDP/eIF-2B complex and prevents GDP/GTP exchange reaction, thus impairing the recycling of eIF-2 between successive rounds of initiation and leading to global inhibition of translation, while concomitantly initiating the preferential translation of integrated stress response (ISR)-specific mRNAs (By similarity). Substrate for at least 4 kinases: EIF2AK1/HRI, EIF2AK2/PKR, EIF2AK3/PERK and EIF2AK4/GCN2. Phosphorylated; phosphorylation on Ser-52 by the EIF2AK4/GCN2 protein kinase occurs in response to amino acid starvation and UV irradiation (By similarity).By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P68101

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P68101

PRoteomics IDEntifications database

More...
PRIDEi
P68101

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P68101

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...
PhosphoSitePlusi
P68101

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSRNOG00000009432, Expressed in testis and 21 other tissues

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
P68101, RN

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Heterotrimer composed of an alpha, a beta and a gamma chain (By similarity).

Component of an EIF2 complex at least composed of CELF1/CUGBP1, CALR, CALR3, EIF2S1, EIF2S2, HSP90B1 and HSPA5 (By similarity). Interaction with METAP2 protects EIF2S1 from inhibitory phosphorylation (PubMed:1346232).

Interacts with ABCF1 (By similarity). Associates with ribosomes (By similarity).

Interacts with DDX3X in an RNA-independent manner (By similarity).

By similarity1 Publication

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
248534, 2 interactors

Protein interaction database and analysis system

More...
IntActi
P68101, 7 interactors

STRING: functional protein association networks

More...
STRINGi
10116.ENSRNOP00000013375

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

Biological Magnetic Resonance Data Bank

More...
BMRBi
P68101

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P68101

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini17 – 88S1 motifPROSITE-ProRule annotationAdd BLAST72

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the eIF-2-alpha family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG2916, Eukaryota

Ensembl GeneTree

More...
GeneTreei
ENSGT00390000007015

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_033458_0_0_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P68101

Identification of Orthologs from Complete Genome Data

More...
OMAi
DVNEHQR

Database of Orthologous Groups

More...
OrthoDBi
1093186at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P68101

TreeFam database of animal gene trees

More...
TreeFami
TF101502

Family and domain databases

Conserved Domains Database

More...
CDDi
cd04452, S1_IF2_alpha, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.150.190, 1 hit
3.30.70.1130, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR012340, NA-bd_OB-fold
IPR022967, S1_dom
IPR003029, S1_domain
IPR044126, S1_IF2_alpha
IPR024055, TIF2_asu_C
IPR024054, TIF2_asu_middle_sf
IPR011488, TIF_2_asu

The PANTHER Classification System

More...
PANTHERi
PTHR10602, PTHR10602, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07541, EIF_2_alpha, 1 hit
PF00575, S1, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00316, S1, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF110993, SSF110993, 1 hit
SSF116742, SSF116742, 1 hit
SSF50249, SSF50249, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50126, S1, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P68101-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPGLSCRFYQ HKFPEVEDVV MVNVRSIAEM GAYVSLLEYN NIEGMILLSE
60 70 80 90 100
LSRRRIRSIN KLIRIGRNEC VVVIRVDKEK GYIDLSKRRV SPEEAIKCED
110 120 130 140 150
KFTKSKTVYS ILRHVAEVLE YTKDEQLESL FQRTAWVFDD KYKRPGYGAY
160 170 180 190 200
DAFKHAVSDP SILDSLDLNE DEREVLINNI NRRLTPQAVK IRADIEVACY
210 220 230 240 250
GYEGIDAVKE ALRAGLNCST ETMPIKINLI APPRYVMTTT TLERTEGLSV
260 270 280 290 300
LNQAMAVIKE KIEEKRGVFN VQMEPKVVTD TDETELARQL ERLERENAEV
310
DGDDDAEEME AKAED
Length:315
Mass (Da):36,108
Last modified:January 23, 2007 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i018480B89175D118
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
J02646 mRNA Translation: AAA41110.1
BC087019 mRNA Translation: AAH87019.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A26711

NCBI Reference Sequences

More...
RefSeqi
NP_062229.1, NM_019356.1

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSRNOT00000013375; ENSRNOP00000013375; ENSRNOG00000009432

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
54318

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
rno:54318

UCSC genome browser

More...
UCSCi
RGD:620963, rat

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J02646 mRNA Translation: AAA41110.1
BC087019 mRNA Translation: AAH87019.1
PIRiA26711
RefSeqiNP_062229.1, NM_019356.1

3D structure databases

BMRBiP68101
SMRiP68101
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi248534, 2 interactors
IntActiP68101, 7 interactors
STRINGi10116.ENSRNOP00000013375

PTM databases

iPTMnetiP68101
PhosphoSitePlusiP68101

Proteomic databases

jPOSTiP68101
PaxDbiP68101
PRIDEiP68101

Genome annotation databases

EnsembliENSRNOT00000013375; ENSRNOP00000013375; ENSRNOG00000009432
GeneIDi54318
KEGGirno:54318
UCSCiRGD:620963, rat

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
1965
RGDi620963, Eif2s1

Phylogenomic databases

eggNOGiKOG2916, Eukaryota
GeneTreeiENSGT00390000007015
HOGENOMiCLU_033458_0_0_1
InParanoidiP68101
OMAiDVNEHQR
OrthoDBi1093186at2759
PhylomeDBiP68101
TreeFamiTF101502

Enzyme and pathway databases

ReactomeiR-RNO-156827, L13a-mediated translational silencing of Ceruloplasmin expression
R-RNO-381042, PERK regulates gene expression
R-RNO-382556, ABC-family proteins mediated transport
R-RNO-72649, Translation initiation complex formation
R-RNO-72695, Formation of the ternary complex, and subsequently, the 43S complex
R-RNO-72702, Ribosomal scanning and start codon recognition
R-RNO-72706, GTP hydrolysis and joining of the 60S ribosomal subunit
R-RNO-72731, Recycling of eIF2:GDP

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P68101

Gene expression databases

BgeeiENSRNOG00000009432, Expressed in testis and 21 other tissues
GenevisibleiP68101, RN

Family and domain databases

CDDicd04452, S1_IF2_alpha, 1 hit
Gene3Di1.10.150.190, 1 hit
3.30.70.1130, 1 hit
InterProiView protein in InterPro
IPR012340, NA-bd_OB-fold
IPR022967, S1_dom
IPR003029, S1_domain
IPR044126, S1_IF2_alpha
IPR024055, TIF2_asu_C
IPR024054, TIF2_asu_middle_sf
IPR011488, TIF_2_asu
PANTHERiPTHR10602, PTHR10602, 1 hit
PfamiView protein in Pfam
PF07541, EIF_2_alpha, 1 hit
PF00575, S1, 1 hit
SMARTiView protein in SMART
SM00316, S1, 1 hit
SUPFAMiSSF110993, SSF110993, 1 hit
SSF116742, SSF116742, 1 hit
SSF50249, SSF50249, 1 hit
PROSITEiView protein in PROSITE
PS50126, S1, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiIF2A_RAT
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P68101
Secondary accession number(s): P05199
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 13, 1987
Last sequence update: January 23, 2007
Last modified: February 10, 2021
This is version 126 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Translation initiation factors
    List of translation initiation factor entries
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