ID   IF2P_ARCFU              Reviewed;         595 AA.
AC   O29490;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   03-AUG-2022, entry version 131.
DE   RecName: Full=Probable translation initiation factor IF-2;
GN   Name=infB; OrderedLocusNames=AF_0768;
OS   Archaeoglobus fulgidus (strain ATCC 49558 / DSM 4304 / JCM 9628 / NBRC
OS   100126 / VC-16).
OC   Archaea; Euryarchaeota; Archaeoglobi; Archaeoglobales; Archaeoglobaceae;
OC   Archaeoglobus.
OX   NCBI_TaxID=224325;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 49558 / DSM 4304 / JCM 9628 / NBRC 100126 / VC-16;
RX   PubMed=9389475; DOI=10.1038/37052;
RA   Klenk H.-P., Clayton R.A., Tomb J.-F., White O., Nelson K.E., Ketchum K.A.,
RA   Dodson R.J., Gwinn M.L., Hickey E.K., Peterson J.D., Richardson D.L.,
RA   Kerlavage A.R., Graham D.E., Kyrpides N.C., Fleischmann R.D.,
RA   Quackenbush J., Lee N.H., Sutton G.G., Gill S.R., Kirkness E.F.,
RA   Dougherty B.A., McKenney K., Adams M.D., Loftus B.J., Peterson S.N.,
RA   Reich C.I., McNeil L.K., Badger J.H., Glodek A., Zhou L., Overbeek R.,
RA   Gocayne J.D., Weidman J.F., McDonald L.A., Utterback T.R., Cotton M.D.,
RA   Spriggs T., Artiach P., Kaine B.P., Sykes S.M., Sadow P.W., D'Andrea K.P.,
RA   Bowman C., Fujii C., Garland S.A., Mason T.M., Olsen G.J., Fraser C.M.,
RA   Smith H.O., Woese C.R., Venter J.C.;
RT   "The complete genome sequence of the hyperthermophilic, sulphate-reducing
RT   archaeon Archaeoglobus fulgidus.";
RL   Nature 390:364-370(1997).
CC   -!- FUNCTION: Function in general translation initiation by promoting the
CC       binding of the formylmethionine-tRNA to ribosomes. Seems to function
CC       along with eIF-2 (By similarity). {ECO:0000250}.
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; AE000782; AAB90465.1; -; Genomic_DNA.
DR   PIR; H69345; H69345.
DR   RefSeq; WP_010878271.1; NC_000917.1.
DR   AlphaFoldDB; O29490; -.
DR   SMR; O29490; -.
DR   STRING; 224325.AF_0768; -.
DR   PRIDE; O29490; -.
DR   EnsemblBacteria; AAB90465; AAB90465; AF_0768.
DR   GeneID; 1483985; -.
DR   KEGG; afu:AF_0768; -.
DR   eggNOG; arCOG01560; Archaea.
DR   HOGENOM; CLU_002656_3_3_2; -.
DR   OMA; FRQSKPA; -.
DR   OrthoDB; 17053at2157; -.
DR   PhylomeDB; O29490; -.
DR   Proteomes; UP000002199; Chromosome.
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   Gene3D; 3.40.50.10050; -; 1.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_00100_A; IF_2_A; 1.
DR   InterPro; IPR004161; EFTu-like_2.
DR   InterPro; IPR029459; EFTU-type.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR005225; Small_GTP-bd_dom.
DR   InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR   InterPro; IPR004544; TF_aIF-2_arc.
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; PF03144; GTP_EFTU_D2; 1.
DR   Pfam; PF14578; GTP_EFTU_D4; 1.
DR   Pfam; PF11987; IF-2; 1.
DR   PRINTS; PR00315; ELONGATNFCT.
DR   SUPFAM; SSF50447; SSF50447; 1.
DR   SUPFAM; SSF52156; SSF52156; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR00491; aIF-2; 1.
DR   TIGRFAMs; TIGR00231; small_GTP; 1.
DR   PROSITE; PS51722; G_TR_2; 1.
PE   3: Inferred from homology;
KW   GTP-binding; Initiation factor; Nucleotide-binding; Protein biosynthesis;
KW   Reference proteome.
FT   CHAIN           1..595
FT                   /note="Probable translation initiation factor IF-2"
FT                   /id="PRO_0000137298"
FT   DOMAIN          11..225
FT                   /note="tr-type G"
FT   REGION          20..27
FT                   /note="G1"
FT                   /evidence="ECO:0000250"
FT   REGION          45..49
FT                   /note="G2"
FT                   /evidence="ECO:0000250"
FT   REGION          81..84
FT                   /note="G3"
FT                   /evidence="ECO:0000250"
FT   REGION          135..138
FT                   /note="G4"
FT                   /evidence="ECO:0000250"
FT   REGION          203..205
FT                   /note="G5"
FT                   /evidence="ECO:0000250"
FT   BINDING         20..27
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         81..85
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         135..138
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   595 AA;  66680 MW;  AFED672E7D0D9703 CRC64;
     MSKKKEEAKA LRTPIVAVLG HVDHGKTTLL DRIRKSKVVA KEAGGITQHI GATEVPLDVI
     KQICKDIWKV EVKIPGLLFI DTPGHKAFTN LRRRGGALAD LAILIVDINE GFKPQTEEAL
     SILRTFKTPF VVAANKIDRI PGWQSHEDTP FMKSYAMQED FAKQNLENRL YNLIAELYQR
     GFSAERFDRI SDFTRTVAVV PISALKGEGI PELLLILVGL AQRYLEKNLR LHIEGKGRGT
     VLEVKEERGL GVTCDAILYD GTLKVGDRIA IAGKDEVIVT NVKAILKPPP VREMRVESKF
     QSVKSVTAAA GIKIVAPNLE NVLAGSEFEV VESEEDIKKF EERVRKEYEE IAIRTDEEGV
     VLKTDTLGSL EALINELRQE GIPIKKAEVG DVDKRDVVDA SANKDELNKV VLAFNVKLLP
     GVEEEAKKYG VRIFSHEIIY TLIESFVKWR EEERLARERQ KVEALIKPGK IKLLKEFIFR
     RSKPAIVGVR VLAGELRRGV DLIKPDGTKV GAVRTMQKEG KNVAIASAGD ELAIAIEDVT
     IGRQLEGDEE LYVDVPERHA KVIERDLLDS LDEETKRAFK EFLEIKRKDN PFWGK