ID   IF2P_HYPBU              Reviewed;         612 AA.
AC   A2BJZ8;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 93.
DE   RecName: Full=Probable translation initiation factor IF-2 {ECO:0000255|HAMAP-Rule:MF_00100};
GN   Name=infB {ECO:0000255|HAMAP-Rule:MF_00100}; OrderedLocusNames=Hbut_0443;
OS   Hyperthermus butylicus (strain DSM 5456 / JCM 9403 / PLM1-5).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales; Pyrodictiaceae;
OC   Hyperthermus.
OX   NCBI_TaxID=415426;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 5456 / JCM 9403 / PLM1-5;
RX   PubMed=17350933; DOI=10.1155/2007/745987;
RA   Bruegger K., Chen L., Stark M., Zibat A., Redder P., Ruepp A., Awayez M.,
RA   She Q., Garrett R.A., Klenk H.-P.;
RT   "The genome of Hyperthermus butylicus: a sulfur-reducing, peptide
RT   fermenting, neutrophilic Crenarchaeote growing up to 108 degrees C.";
RL   Archaea 2:127-135(2007).
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. {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; CP000493; ABM80309.1; -; Genomic_DNA.
DR   RefSeq; WP_011821627.1; NC_008818.1.
DR   AlphaFoldDB; A2BJZ8; -.
DR   SMR; A2BJZ8; -.
DR   STRING; 415426.Hbut_0443; -.
DR   EnsemblBacteria; ABM80309; ABM80309; Hbut_0443.
DR   GeneID; 4782603; -.
DR   KEGG; hbu:Hbut_0443; -.
DR   eggNOG; arCOG01560; Archaea.
DR   HOGENOM; CLU_002656_3_3_2; -.
DR   OMA; FRQSKPA; -.
DR   OrthoDB; 17053at2157; -.
DR   Proteomes; UP000002593; 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..612
FT                   /note="Probable translation initiation factor IF-2"
FT                   /id="PRO_0000335523"
FT   DOMAIN          11..229
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          84..87
FT                   /note="G3"
FT                   /evidence="ECO:0000250"
FT   REGION          138..141
FT                   /note="G4"
FT                   /evidence="ECO:0000250"
FT   REGION          207..209
FT                   /note="G5"
FT                   /evidence="ECO:0000250"
FT   BINDING         20..27
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT   BINDING         84..88
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
FT   BINDING         138..141
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00100"
SQ   SEQUENCE   612 AA;  68179 MW;  6EF671805F18400F CRC64;
     MAEQKTSGRR LRQPIVVVLG HVDHGKTTLL DKIRGTTVAA KEPGLITQHV GASFVPASVI
     EKLAEPLKKI IPFKLIIPGL LFIDTPGHEL FANLRRRGGS VADFAILVVD INEGFQPQTY
     ESIEILRQRR VPFVVAANKI DKIPGWRANP DTPFLISLQK QAQRVREELE RRLWDNIISK
     LYELGFQADR FDRIRDFTRT VAVIPISAKT GEGIAELLAV LAGLTQRYLQ HRLRFAEGPA
     KGVILEIREQ PGLGTAADVV IYDGVLRKGD IIVTGGLNGP VITHVRALLM PKPLQEIRVA
     KRELEPVEEV YAAAGVRIVA PGLEEAIAGA PVFVARDEGE AKQLAEKVRR EIEALRIKTE
     AEGVIVKADT LGSLEAMIEA LRKRDIPIRY ADVGPVAKRD VIEAVASREL NKFYGVILAF
     NVKVLPEAEE EAKKHGITIF TNNVIYRLLE DFEKWYKEQV EAERRKELEK LVRPGKIRLL
     PGYVFRRSNP AIVGVEVLGG VIKPGYPLMR EDGKRIGTIH QIQDKGKVIH EARAGMAVAI
     SIRGHVMVGR HIDEGDVLYT DIPEQHAVLW LTKFKSELTD DEMVVLKEII KIKRKQNPAY
     AVVLGKPQGA KP