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IF2_HALHL
ID   IF2_HALHL               Reviewed;         890 AA.
AC   A1WXV1;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Translation initiation factor IF-2 {ECO:0000255|HAMAP-Rule:MF_00100};
GN   Name=infB {ECO:0000255|HAMAP-Rule:MF_00100}; OrderedLocusNames=Hhal_1749;
OS   Halorhodospira halophila (strain DSM 244 / SL1) (Ectothiorhodospira
OS   halophila (strain DSM 244 / SL1)).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Chromatiales;
OC   Ectothiorhodospiraceae; Halorhodospira.
OX   NCBI_TaxID=349124;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 244 / SL1;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Saunders E., Brettin T., Bruce D., Han C., Tapia R., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Hoff W.,
RA   Richardson P.;
RT   "Complete sequence of Halorhodospira halophila SL1.";
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
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; CP000544; ABM62513.1; -; Genomic_DNA.
DR   RefSeq; WP_011814535.1; NC_008789.1.
DR   AlphaFoldDB; A1WXV1; -.
DR   SMR; A1WXV1; -.
DR   STRING; 349124.Hhal_1749; -.
DR   PRIDE; A1WXV1; -.
DR   EnsemblBacteria; ABM62513; ABM62513; Hhal_1749.
DR   KEGG; hha:Hhal_1749; -.
DR   eggNOG; COG0532; Bacteria.
DR   HOGENOM; CLU_006301_6_1_6; -.
DR   OMA; NRDNRTG; -.
DR   OrthoDB; 347113at2; -.
DR   Proteomes; UP000000647; 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:0003743; F:translation initiation factor activity; IEA:UniProtKB-UniRule.
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; 1.
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   Cytoplasm; GTP-binding; Initiation factor; Nucleotide-binding;
KW   Protein biosynthesis; Reference proteome.
FT   CHAIN           1..890
FT                   /note="Translation initiation factor IF-2"
FT                   /id="PRO_1000008251"
FT   DOMAIN          390..559
FT                   /note="tr-type G"
FT   REGION          50..304
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          399..406
FT                   /note="G1"
FT                   /evidence="ECO:0000250"
FT   REGION          424..428
FT                   /note="G2"
FT                   /evidence="ECO:0000250"
FT   REGION          445..448
FT                   /note="G3"
FT                   /evidence="ECO:0000250"
FT   REGION          499..502
FT                   /note="G4"
FT                   /evidence="ECO:0000250"
FT   REGION          535..537
FT                   /note="G5"
FT                   /evidence="ECO:0000250"
FT   COMPBIAS        53..72
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        99..153
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        205..271
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         399..406
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT   BINDING         445..449
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT   BINDING         499..502
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
SQ   SEQUENCE   890 AA;  97162 MW;  01838AC3901896CB CRC64;
     MAETTVKEFA QTVGIPVERL QAQLEAAGLG RRDDGAALSA EDKATLLAHL RQGSPEQEEE
     GGGSDGSPKK ITLKRRSHSQ LKMPAGRDAG SRGPRQTRTV NVEVRKRRTY VKRSDIEAEE
     KRKQEEAEEA AAQLERALEQ EEAKREEDAA EAQRAGDTAV TGGDEAEQAP SEEAAPAEEA
     EPSAADAEAV EESGVEVQAA EPEETAADET ARAQAEALKE KPKSQQDEAK KREEERERKR
     AELEAKRERE AEERAQRKQE AKPKKKKAEQ PAGGRGAGAR RGGKKRGGGT AAKQLQQEFE
     RPTAPVVREV EIPETITVAE LADRMSVKAA ALIKEMMKQG VMATINQAID QETAAILVEE
     MGHKPKLQRD DDVEEELLRQ GEQPEGEQIG RAPVVTVMGH VDHGKTSLLD YIRRAKVASG
     EAGGITQHIG AYRVEGENGS ATFLDTPGHQ AFTAMRARGA QMTDIVVLVV AADDGVMPQT
     KEAVEHARAA EVPIVVAVNK MDKEDADPNR VKQELSQMEV IPEEWGGDVQ FVHVSAMTGE
     GMDELIEAIV LQAELQELKA VKDCPARGVV LESSLDKGRG PVATVLVQNG YLHRGDTVIS
     GTEFGRVRAL VDEHGKRVNE AGPSTPVEVL GLSGLPDAGD DIMVVEDERK AREVAESRSE
     RQREKRLAQQ QAARMENLFS QMKEDEVSTI NLLVKADVHG SAEALRQSLE DLSHEEVRVR
     VVSSGVGAIT ESDVNLALAS EAIMIGFNVR ADAAAKRMVQ EHGVDLHYYS VIYDAIEQVK
     NAISGMLEPT LEEHILGTAE VREVFRSSKL GQVAGCLVVD GVVRRRNPIR VLRDSVVIYE
     GELESLRRFK DDVNEVRAGT ECGIGVKNYN DVRAGDQIEC YERVEVQRSL
 
 
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