ID I3D4E3_9ARCH Unreviewed; 593 AA.
AC I3D4E3;
DT 11-JUL-2012, integrated into UniProtKB/TrEMBL.
DT 11-JUL-2012, sequence version 1.
DT 24-JAN-2024, entry version 53.
DE RecName: Full=Probable translation initiation factor IF-2 {ECO:0000256|HAMAP-Rule:MF_00100};
GN Name=infB {ECO:0000256|HAMAP-Rule:MF_00100,
GN ECO:0000313|EMBL:EIJ66586.1};
GN ORFNames=BD31_I1168 {ECO:0000313|EMBL:EIJ66586.1};
OS Candidatus Nitrosopumilus salaria BD31.
OC Archaea; Nitrososphaerota; Nitrososphaeria; Nitrosopumilales;
OC Nitrosopumilaceae; Nitrosopumilus.
OX NCBI_TaxID=859350 {ECO:0000313|EMBL:EIJ66586.1, ECO:0000313|Proteomes:UP000003423};
RN [1] {ECO:0000313|EMBL:EIJ66586.1, ECO:0000313|Proteomes:UP000003423}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BD31 {ECO:0000313|EMBL:EIJ66586.1,
RC ECO:0000313|Proteomes:UP000003423};
RX PubMed=22461555; DOI=10.1128/JB.00013-12;
RA Mosier A.C., Allen E.E., Kim M., Ferriera S., Francis C.A.;
RT "Genome sequence of "Candidatus Nitrosopumilus salaria" BD31, an ammonia-
RT oxidizing archaeon from the San Francisco Bay estuary.";
RL J. Bacteriol. 194:2121-2122(2012).
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:0000256|ARBA:ARBA00024852, ECO:0000256|HAMAP-
CC Rule:MF_00100, ECO:0000256|RuleBase:RU000644}.
CC -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC superfamily. Classic translation factor GTPase family. IF-2 subfamily.
CC {ECO:0000256|ARBA:ARBA00007733, ECO:0000256|HAMAP-Rule:MF_00100,
CC ECO:0000256|RuleBase:RU000644}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00100}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EIJ66586.1}.
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DR EMBL; AEXL02000045; EIJ66586.1; -; Genomic_DNA.
DR AlphaFoldDB; I3D4E3; -.
DR PATRIC; fig|859350.6.peg.394; -.
DR OrthoDB; 30957at2157; -.
DR Proteomes; UP000003423; Unassembled WGS sequence.
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; cd01887; IF2_eIF5B; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 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_A; IF_2_A; 1.
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 NCBIfam; TIGR00491; aIF-2; 1.
DR NCBIfam; TIGR00231; small_GTP; 1.
DR PANTHER; PTHR43381:SF4; EUKARYOTIC TRANSLATION INITIATION FACTOR 5B; 1.
DR PANTHER; PTHR43381; TRANSLATION INITIATION FACTOR IF-2-RELATED; 1.
DR Pfam; PF00009; GTP_EFTU; 1.
DR Pfam; PF14578; GTP_EFTU_D4; 1.
DR Pfam; PF11987; IF-2; 1.
DR PRINTS; PR00315; ELONGATNFCT.
DR SUPFAM; SSF52156; Initiation factor IF2/eIF5b, domain 3; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF50447; Translation proteins; 1.
DR PROSITE; PS51722; G_TR_2; 1.
PE 3: Inferred from homology;
KW GTP-binding {ECO:0000256|HAMAP-Rule:MF_00100};
KW Initiation factor {ECO:0000256|ARBA:ARBA00022540, ECO:0000256|HAMAP-
KW Rule:MF_00100}; Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_00100};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_00100}.
FT DOMAIN 3..221
FT /note="Tr-type G"
FT /evidence="ECO:0000259|PROSITE:PS51722"
FT BINDING 77..81
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00100"
SQ SEQUENCE 593 AA; 65709 MW; F1982F2B772AF41E CRC64;
MQIRQPIVAV LGHVDSGKTS LLDKIRGTGV QGREAGGITQ HIGASFLPSE TIKEMCGPLY
KKLEQAENKV PGLLVIDTPG HEVFTNLRSR GGSAADIAIL VVDVNRGFQP QTNESLKILQ
SRKVPFVVAL NKCDQISGWR KSETKFISQA IKEQDASIQA DLDQKIYDVV GTLSILGYQS
EAFYRVKDFK SEVAIVPISA RSGVGLPELL SVLVGLTQQY LKQRLEQGEK DPRGIVLEVN
DEVGLGPTAN IILIDGTIKK ENSIVVAKRD SVLVIKPKAI LLPKPLDEMR DPRDKFKPVS
SVDAAAGLKI ASADLEGVLP GSTLYVASND TEIKKFTNLI EAEMKSVFID TETDGIILKC
DTIGSLEAIV EMLRRSQVPV AKADIGPVNR RDIMEAKAIK EKNRHLGIIL SFNVKVLPDA
REESEISHIK VFEDKVIYSL IDNYNAWVEE DTANEEDALF AELTPISKFT FMKGMVFRNN
NPAVFGVRID VGTLKHKIPF MNMDGRKVGN IHQLQLDKKT VASAKAGDEV ACSVKDVTIG
RQIFEEEVYY TFPPSHEAKI ILKKFMHKLS SEEQEVFNDI VRIQREKEPI YGY
//
