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IF2_LACLM
ID   IF2_LACLM               Reviewed;         950 AA.
AC   A2RM37;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 99.
DE   RecName: Full=Translation initiation factor IF-2 {ECO:0000255|HAMAP-Rule:MF_00100};
GN   Name=infB {ECO:0000255|HAMAP-Rule:MF_00100}; OrderedLocusNames=llmg_1792;
OS   Lactococcus lactis subsp. cremoris (strain MG1363).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Lactococcus; Lactococcus cremoris subsp. cremoris.
OX   NCBI_TaxID=416870;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MG1363;
RX   PubMed=17307855; DOI=10.1128/jb.01768-06;
RA   Wegmann U., O'Connell-Motherway M., Zomer A., Buist G., Shearman C.,
RA   Canchaya C., Ventura M., Goesmann A., Gasson M.J., Kuipers O.P.,
RA   van Sinderen D., Kok J.;
RT   "The complete genome sequence of the lactic acid bacterial paradigm
RT   Lactococcus lactis subsp. cremoris MG1363.";
RL   J. Bacteriol. 189:3256-3270(2007).
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; AM406671; CAL98364.1; -; Genomic_DNA.
DR   RefSeq; WP_011835571.1; NZ_WJVF01000003.1.
DR   AlphaFoldDB; A2RM37; -.
DR   SMR; A2RM37; -.
DR   STRING; 416870.llmg_1792; -.
DR   EnsemblBacteria; CAL98364; CAL98364; llmg_1792.
DR   KEGG; llm:llmg_1792; -.
DR   eggNOG; COG0532; Bacteria.
DR   HOGENOM; CLU_006301_5_0_9; -.
DR   OMA; NRDNRTG; -.
DR   PhylomeDB; A2RM37; -.
DR   BioCyc; LLAC416870:LLMG_RS08985-MON; -.
DR   Proteomes; UP000000364; 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; 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; PF04760; IF2_N; 2.
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.
FT   CHAIN           1..950
FT                   /note="Translation initiation factor IF-2"
FT                   /id="PRO_0000335482"
FT   DOMAIN          448..619
FT                   /note="tr-type G"
FT   REGION          128..354
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          457..464
FT                   /note="G1"
FT                   /evidence="ECO:0000250"
FT   REGION          482..486
FT                   /note="G2"
FT                   /evidence="ECO:0000250"
FT   REGION          503..506
FT                   /note="G3"
FT                   /evidence="ECO:0000250"
FT   REGION          557..560
FT                   /note="G4"
FT                   /evidence="ECO:0000250"
FT   REGION          595..597
FT                   /note="G5"
FT                   /evidence="ECO:0000250"
FT   COMPBIAS        128..232
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        233..249
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        255..288
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        289..316
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        321..354
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         457..464
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT   BINDING         503..507
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT   BINDING         557..560
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
SQ   SEQUENCE   950 AA;  104581 MW;  B33801D053BA19A5 CRC64;
     MSDKKRINQI AKETGLSNTE LVATAQSLGF EVKSHSSSVT AEQAEKIIQG VKTGTDTIVK
     PAEKTVKAKI KTVPETAKSK QEDHPRTFAG KAVVEDPAIL ARIKEKEEAK KAAKTEAEPI
     EEVITTEKPK VAEPVKKSEP KAAAKAEETK VEKVEAKAKT VTPKAEVKTE NVADKKEPVV
     TEEKKKSLTQ KPRIQIKVIK RAEDIKKEQA AARPEKKKFD KNRNDRNNRN DNRRPNQNGN
     GQGHSQGGNH YDKNRPAGQG QNQGQKRDKF ASSGSSSTSD TFTPAASGKN NRRDRDRKKT
     DSNRDNTKDG NRKGGPLRVN DNRNQVRNAR NSNWNQKGGR GRYQNNQSSS VPATQRKFHE
     LPESLEYEVG MNVQDIAKSI KREPAEIIKK LFMMGTMVNQ NQSLDEDTIE LILMDYGVTP
     LKKVEEDKSD IERLFVEDGY LNEDKMVERP AVVTIMGHVD HGKTTLLDRF RESRVTEGEA
     GGITQHIGAY QIKTNGKKIT FLDTPGHEAF TSMRARGASV TDITILVVAA DDGVMPQTIE
     AINHSKAAGV PIIVAINKID KPGANPQRVT QELTEHGVFP VAWDPENGSE FVEISAKFNQ
     NLEELLDTVL LVAEVQELKA DPSVRAIGTV VEARLDQGKG AIATLLVQQG TLHIQDPIVV
     GNTYGRVRTM TNDLGRRIKE AGPSTPIELT GLSDVPQAGD HFAVFEDEKA ARAAGEERAK
     RAQLIKRQNT RRVNLDNLFD TLKEGQTKSV NIIIKADVQG SAEALAASLQ KIEVEGVKVD
     IVHSAVGAIS ESDISLAAAS NAIIIGFNVR PTGLAREQAA QEEVDIRLHS IIYKVIEEVE
     TAMRGMLDPE FKEEIIGEAI VRETFNVSKV GTIAGFMVIR GKVTRDASVR VIREGVVIHD
     GAIASLKHFK DDVKEVGNAQ EGGLMVEDFN DVEIDDTFEV YKMVEIERKK
 
 
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