ID IF2_COLP3 Reviewed; 889 AA.
AC Q482T9;
DT 21-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT 13-SEP-2005, sequence version 1.
DT 27-MAR-2024, entry version 112.
DE RecName: Full=Translation initiation factor IF-2 {ECO:0000255|HAMAP-Rule:MF_00100};
GN Name=infB {ECO:0000255|HAMAP-Rule:MF_00100}; OrderedLocusNames=CPS_2203;
OS Colwellia psychrerythraea (strain 34H / ATCC BAA-681) (Vibrio
OS psychroerythus).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales;
OC Colwelliaceae; Colwellia.
OX NCBI_TaxID=167879;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=34H / ATCC BAA-681;
RX PubMed=16043709; DOI=10.1073/pnas.0504766102;
RA Methe B.A., Nelson K.E., Deming J.W., Momen B., Melamud E., Zhang X.,
RA Moult J., Madupu R., Nelson W.C., Dodson R.J., Brinkac L.M.,
RA Daugherty S.C., Durkin A.S., DeBoy R.T., Kolonay J.F., Sullivan S.A.,
RA Zhou L., Davidsen T.M., Wu M., Huston A.L., Lewis M., Weaver B.,
RA Weidman J.F., Khouri H., Utterback T.R., Feldblyum T.V., Fraser C.M.;
RT "The psychrophilic lifestyle as revealed by the genome sequence of
RT Colwellia psychrerythraea 34H through genomic and proteomic analyses.";
RL Proc. Natl. Acad. Sci. U.S.A. 102:10913-10918(2005).
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. {ECO:0000255|HAMAP-Rule:MF_00100}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00100}.
CC -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC superfamily. Classic translation factor GTPase family. IF-2 subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00100}.
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DR EMBL; CP000083; AAZ24660.1; -; Genomic_DNA.
DR RefSeq; WP_011043022.1; NC_003910.7.
DR AlphaFoldDB; Q482T9; -.
DR SMR; Q482T9; -.
DR STRING; 167879.CPS_2203; -.
DR KEGG; cps:CPS_2203; -.
DR eggNOG; COG0532; Bacteria.
DR HOGENOM; CLU_006301_6_3_6; -.
DR Proteomes; UP000000547; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0003924; F:GTPase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0097216; F:guanosine tetraphosphate binding; IEA:UniProt.
DR GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-UniRule.
DR CDD; cd01887; IF2_eIF5B; 1.
DR CDD; cd03702; IF2_mtIF2_II; 1.
DR CDD; cd03692; mtIF2_IVc; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR Gene3D; 3.30.56.50; Putative DNA-binding domain, N-terminal subdomain of bacterial translation initiation factor IF2; 1.
DR Gene3D; 2.40.30.10; Translation factors; 2.
DR Gene3D; 3.40.50.10050; Translation initiation factor IF- 2, domain 3; 1.
DR HAMAP; MF_00100_B; IF_2_B; 1.
DR InterPro; IPR009061; DNA-bd_dom_put_sf.
DR InterPro; IPR004161; EFTu-like_2.
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 NCBIfam; TIGR00487; IF-2; 1.
DR NCBIfam; TIGR00231; small_GTP; 1.
DR PANTHER; PTHR43381:SF5; TR-TYPE G DOMAIN-CONTAINING PROTEIN; 1.
DR PANTHER; PTHR43381; TRANSLATION INITIATION FACTOR IF-2-RELATED; 1.
DR Pfam; PF00009; GTP_EFTU; 1.
DR Pfam; PF03144; GTP_EFTU_D2; 1.
DR Pfam; PF11987; IF-2; 1.
DR Pfam; PF08364; IF2_assoc; 1.
DR Pfam; PF04760; IF2_N; 2.
DR SUPFAM; SSF52156; Initiation factor IF2/eIF5b, domain 3; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF46955; Putative DNA-binding domain; 1.
DR SUPFAM; SSF50447; Translation proteins; 2.
DR PROSITE; PS51722; G_TR_2; 1.
DR PROSITE; PS01176; IF2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; GTP-binding; Initiation factor; Nucleotide-binding;
KW Protein biosynthesis.
FT CHAIN 1..889
FT /note="Translation initiation factor IF-2"
FT /id="PRO_0000228185"
FT DOMAIN 389..558
FT /note="tr-type G"
FT REGION 47..85
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 206..302
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 398..405
FT /note="G1"
FT /evidence="ECO:0000250"
FT REGION 423..427
FT /note="G2"
FT /evidence="ECO:0000250"
FT REGION 444..447
FT /note="G3"
FT /evidence="ECO:0000250"
FT REGION 498..501
FT /note="G4"
FT /evidence="ECO:0000250"
FT REGION 534..536
FT /note="G5"
FT /evidence="ECO:0000250"
FT COMPBIAS 47..65
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 66..80
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 214..241
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 253..267
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 284..298
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 398..405
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT BINDING 444..448
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT BINDING 498..501
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
SQ SEQUENCE 889 AA; 95680 MW; B124390C4354573E CRC64;
MADITVAELA KEIGTPVDRL VTQLADSGVN KSATDAISQD EKEALLGHLK KQHGDESEAK
PNKLTLNRKT KSTLTMGHGS KAKSVNVEVR KKRTYVKRSE VEDEKLAEEA AKAEAEAAIL
AEADAKAKAE AAAKEAENEK GVAAAKAEVE AERKAEAKIE AAAKAKIAAV EKAKNVEQAP
EKVAETEEAK KLRLAQEKET LAKVEAEAAA AAEAAKKLAE ENEGRWKEQE AERKAKEKEV
VHLTSSVYAQ EAEDKSDSAD ESGRRRKKKK APDRNARGRN SGRGKGKTLS SPQSLKHGFT
KPVETKLQDI RIGETISVAE LANKMSKKGA EVVKAMFKLG AMATINQVID QETAALVAED
MGFEVVLVKE NALEEAVLAD RNDTGEEITR APVVTIMGHV DHGKTSLLDH IREAKVADGE
AGGITQHIGA YHVETGHGMI TFLDTPGHAA FTAMRSRGAK ATDIVVIVVA ADDGVMPQTI
EAIQHAQASE APIIIAVNKM DKESADPDRV KSELSQHGVL SEEWGGEVQF CHVSAKTGLG
IDELLDSILL QSEVLELTAV VDKMANGVVV ESKLDKGRGP VATVLVQEGT LKQGDIVLCG
LEYGRVRAMR DENGKTIQSA GPSIPVEIIG LSGVPISGDE ATVVKDEKKA REVALFRQGK
FRDVKLARQQ KAKLENMFAS MAEGDISEVN VVIKSDVQGS LEAISDSLLK LSTDEVKVKI
IGSGVGAITE TDATLAAASN AIVVGFNVRA DASARKVIES ENIDLRYYSV IYALIEEVKQ
AMSGMLAPEF KQEIIGLAQV RDVFKSPKIG AIAGCMVTEG VIKRSAPIRV LRENVVIYEG
ELESLRRFKD DVQEVRNGTE CGIGVKNYND VRVGDQIEVF ETIEIKRSL
//
