IF2_SALTY
ID IF2_SALTY Reviewed; 892 AA.
AC Q9ZF31; Q9RIL8;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2002, sequence version 2.
DT 03-AUG-2022, entry version 150.
DE RecName: Full=Translation initiation factor IF-2;
GN Name=infB; OrderedLocusNames=STM3286;
OS Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Salmonella.
OX NCBI_TaxID=99287;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=LT2;
RA Fage-Larsen J., Steffensen S.A.D.A., Hedegaard J., Olsen J.E.,
RA Mortensen K.K., Sperling-Petersen H.U.;
RT "Sequence of the infB gene from Salmonella typhimurium.";
RL Submitted (NOV-1997) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=LT2 / SGSC1412 / ATCC 700720;
RX PubMed=11677609; DOI=10.1038/35101614;
RA McClelland M., Sanderson K.E., Spieth J., Clifton S.W., Latreille P.,
RA Courtney L., Porwollik S., Ali J., Dante M., Du F., Hou S., Layman D.,
RA Leonard S., Nguyen C., Scott K., Holmes A., Grewal N., Mulvaney E.,
RA Ryan E., Sun H., Florea L., Miller W., Stoneking T., Nhan M., Waterston R.,
RA Wilson R.K.;
RT "Complete genome sequence of Salmonella enterica serovar Typhimurium LT2.";
RL Nature 413:852-856(2001).
RN [3]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 406-566.
RC STRAIN=StyAU9601;
RX PubMed=10555334; DOI=10.1099/00207713-49-4-1531;
RA Hedegaard J., Steffensen S.A.D.A., Norskow-Lauritsen N., Mortensen K.K.,
RA Sperling-Petersen H.U.;
RT "Identification of Enterobacteriaceae by partial sequencing of the gene
RT encoding translation initiation factor 2.";
RL Int. J. Syst. Bacteriol. 49:1531-1538(1999).
CC -!- FUNCTION: One of the essential components for the initiation of protein
CC synthesis. Protects formylmethionyl-tRNA from spontaneous hydrolysis
CC and promotes its binding to the 30S ribosomal subunits. Also involved
CC in the hydrolysis of GTP during the formation of the 70S ribosomal
CC complex (By similarity). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC -!- ALTERNATIVE PRODUCTS:
CC Event=Alternative initiation; Named isoforms=3;
CC Name=Alpha;
CC IsoId=Q9ZF31-1; Sequence=Displayed;
CC Name=Beta;
CC IsoId=Q9ZF31-2; Sequence=VSP_018767, VSP_018768;
CC Name=Gamma;
CC IsoId=Q9ZF31-3; Sequence=VSP_018766;
CC -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC superfamily. Classic translation factor GTPase family. IF-2 subfamily.
CC {ECO:0000305}.
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DR EMBL; AJ002552; CAA05549.1; -; Genomic_DNA.
DR EMBL; AJ002552; CAA05550.1; -; Genomic_DNA.
DR EMBL; AJ002552; CAA05551.1; -; Genomic_DNA.
DR EMBL; AE006468; AAL22158.1; -; Genomic_DNA.
DR EMBL; AJ227976; CAA12747.1; -; Genomic_DNA.
DR RefSeq; NP_462199.1; NC_003197.2. [Q9ZF31-1]
DR RefSeq; WP_000133064.1; NC_003197.2.
DR AlphaFoldDB; Q9ZF31; -.
DR SMR; Q9ZF31; -.
DR STRING; 99287.STM3286; -.
DR PaxDb; Q9ZF31; -.
DR EnsemblBacteria; AAL22158; AAL22158; STM3286.
DR GeneID; 1254809; -.
DR KEGG; stm:STM3286; -.
DR PATRIC; fig|99287.12.peg.3485; -.
DR HOGENOM; CLU_006301_6_3_6; -.
DR OMA; NRDNRTG; -.
DR PhylomeDB; Q9ZF31; -.
DR BioCyc; SENT99287:STM3286-MON; -.
DR Proteomes; UP000001014; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0003924; F:GTPase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0003743; F:translation initiation factor activity; IBA:GO_Central.
DR GO; GO:0006413; P:translational initiation; IBA:GO_Central.
DR CDD; cd03702; IF2_mtIF2_II; 1.
DR Gene3D; 3.40.50.10050; -; 1.
DR Gene3D; 3.40.50.300; -; 1.
DR HAMAP; MF_00100_B; IF_2_B; 1.
DR InterPro; IPR009061; DNA-bd_dom_put_sf.
DR InterPro; IPR013575; IF2_assoc_dom_bac.
DR InterPro; IPR044145; IF2_II.
DR InterPro; IPR006847; IF2_N.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR005225; Small_GTP-bd_dom.
DR InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR InterPro; IPR000178; TF_IF2_bacterial-like.
DR InterPro; IPR015760; TIF_IF2.
DR InterPro; IPR023115; TIF_IF2_dom3.
DR InterPro; IPR036925; TIF_IF2_dom3_sf.
DR InterPro; IPR009000; Transl_B-barrel_sf.
DR PANTHER; PTHR43381; PTHR43381; 1.
DR Pfam; PF00009; GTP_EFTU; 1.
DR Pfam; PF11987; IF-2; 1.
DR Pfam; PF08364; IF2_assoc; 1.
DR Pfam; PF04760; IF2_N; 2.
DR SUPFAM; SSF46955; SSF46955; 1.
DR SUPFAM; SSF50447; SSF50447; 2.
DR SUPFAM; SSF52156; SSF52156; 1.
DR SUPFAM; SSF52540; SSF52540; 1.
DR TIGRFAMs; TIGR00487; IF-2; 1.
DR TIGRFAMs; TIGR00231; small_GTP; 1.
DR PROSITE; PS51722; G_TR_2; 1.
DR PROSITE; PS01176; IF2; 1.
PE 3: Inferred from homology;
KW Alternative initiation; Cytoplasm; GTP-binding; Initiation factor;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome.
FT CHAIN 1..892
FT /note="Translation initiation factor IF-2"
FT /id="PRO_0000014474"
FT DOMAIN 391..560
FT /note="tr-type G"
FT REGION 88..305
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 400..407
FT /note="G1"
FT /evidence="ECO:0000250"
FT REGION 425..429
FT /note="G2"
FT /evidence="ECO:0000250"
FT REGION 446..449
FT /note="G3"
FT /evidence="ECO:0000250"
FT REGION 500..503
FT /note="G4"
FT /evidence="ECO:0000250"
FT REGION 536..538
FT /note="G5"
FT /evidence="ECO:0000250"
FT COMPBIAS 88..163
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 170..220
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 236..257
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 265..286
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 400..407
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 446..450
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 500..503
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT VAR_SEQ 1..166
FT /note="Missing (in isoform Gamma)"
FT /evidence="ECO:0000305"
FT /id="VSP_018766"
FT VAR_SEQ 1..158
FT /note="Missing (in isoform Beta)"
FT /evidence="ECO:0000305"
FT /id="VSP_018767"
FT VAR_SEQ 159
FT /note="V -> M (in isoform Beta)"
FT /evidence="ECO:0000305"
FT /id="VSP_018768"
FT CONFLICT 184
FT /note="E -> D (in Ref. 1; CAA05549/CAA05550/CAA05551)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 892 AA; 97402 MW; 0D690F8E64505885 CRC64;
MTDVTLKALA AERQVSVDRL VQQFADAGIR KSADDSVSAQ EKQTLLAHLN REAVSGPDKL
TLQRKTRSTL NIPGTGGKSK SVQIEVRKKR TFVKRDPQEA ERLAAEEQAQ REAEEQARRE
AEEQAKREAQ QKAEREAAEQ AKREAAEKAK REAAEKDKVS NQQTDDMTKT AQAEKARREN
EAAELKRKAE EEARRKLEEE ARRVAEEARR MAEENKWTAT PEPVEDTSDY HVTTSQHARQ
AEDENDREVE GGRGRGRNAK AARPAKKGKH AESKADREEA RAAVRGGKGG KRKGSSLQQG
FQKPAQAVNR DVVIGETITV GELANKMAVK GSQVIKAMMK LGAMATINQV IDQETAQLVA
EEMGHKVILR RENELEEAVM SDRDTGAAAE PRAPVVTIMG HVDHGKTSLL DYIRSTKVAS
GEAGGITQHI GAYHVETDNG MITFLDTPGH AAFTSMRARG AQATDIVVLV VAADDGVMPQ
TIEAIQHAKA AGVPVVVAVN KIDKPEADPD RVKNELSQYG ILPEEWGGES QFVHVSAKAG
TGIDELLDAI LLQAEVLELK AVRKGMASGA VIESFLDKGR GPVATVLVRE GTLHKGDIVL
CGFEYGRVRA MRNELGQEVL EAGPSIPVEI LGLSGVPAAG DEVTVVRDEK KAREVALYRQ
GKFREVKLAR QQKSKLENMF ANMTEGEVHE VNIVLKADVQ GSVEAISDSL LKLSTDEVKV
KIIGSGVGGI TETDATLAAA SNAILVGFNV RADASARKVI ESESLDLRYY SVIYNLIDEV
KAAMSGMLSP ELKQQIIGLA EVRDVFKSPK FGAIAGCMVT EGTIKRHNPI RVLRDNVVIY
EGELESLRRF KDDVNEVRNG MECGIGVKNY NDVRVGDMIE VFEIIEIQRT IA
