ID M7AK55_9ACTN Unreviewed; 610 AA.
AC M7AK55;
DT 29-MAY-2013, integrated into UniProtKB/TrEMBL.
DT 09-DEC-2015, sequence version 2.
DT 27-MAR-2024, entry version 42.
DE RecName: Full=Translation initiation factor IF-2 {ECO:0000256|ARBA:ARBA00020675, ECO:0000256|HAMAP-Rule:MF_00100};
GN Name=infB {ECO:0000256|HAMAP-Rule:MF_00100};
GN ORFNames=ISGA_5000 {ECO:0000313|EMBL:EMP11204.2};
OS Gordonia sp. NB41Y.
OC Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Gordoniaceae;
OC Gordonia.
OX NCBI_TaxID=875808 {ECO:0000313|EMBL:EMP11204.2, ECO:0000313|Proteomes:UP000011989};
RN [1] {ECO:0000313|EMBL:EMP11204.2, ECO:0000313|Proteomes:UP000011989}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NB4-1Y {ECO:0000313|EMBL:EMP11204.2,
RC ECO:0000313|Proteomes:UP000011989};
RX PubMed=23744905; DOI=10.1099/mic.0.068932-0;
RA Van Hamme J.D., Bottos E.M., Bilbey N.J., Brewer S.E.;
RT "Genomic and proteomic characterization of Gordonia sp. NB4-1Y in relation
RT to 6 : 2 fluorotelomer sulfonate biodegradation.";
RL Microbiology 159:1618-1628(2013).
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:0000256|HAMAP-Rule:MF_00100,
CC ECO:0000256|RuleBase:RU000644}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|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: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:EMP11204.2}.
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DR EMBL; APHK02000030; EMP11204.2; -; Genomic_DNA.
DR AlphaFoldDB; M7AK55; -.
DR STRING; 1241906.ISGA_5000; -.
DR Proteomes; UP000011989; Unassembled WGS sequence.
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; cd01887; IF2_eIF5B; 1.
DR CDD; cd03702; IF2_mtIF2_II; 1.
DR CDD; cd03692; mtIF2_IVc; 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_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 NCBIfam; TIGR00487; IF-2; 1.
DR NCBIfam; TIGR00231; small_GTP; 1.
DR PANTHER; PTHR43381:SF5; TR-TYPE G DOMAIN-CONTAINING PROTEIN; 1.
DR PANTHER; PTHR43381; TRANSLATION INITIATION FACTOR IF-2-RELATED; 1.
DR Pfam; PF00009; GTP_EFTU; 1.
DR Pfam; PF11987; IF-2; 1.
DR Pfam; PF04760; IF2_N; 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; 2.
DR PROSITE; PS51722; G_TR_2; 1.
DR PROSITE; PS01176; IF2; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00100};
KW GTP-binding {ECO:0000256|ARBA:ARBA00023134, ECO:0000256|HAMAP-
KW Rule:MF_00100};
KW Initiation factor {ECO:0000256|ARBA:ARBA00022540, ECO:0000256|HAMAP-
KW Rule:MF_00100};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00100};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_00100}; Reference proteome {ECO:0000313|Proteomes:UP000011989}.
FT DOMAIN 106..278
FT /note="Tr-type G"
FT /evidence="ECO:0000259|PROSITE:PS51722"
FT BINDING 115..122
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00100"
FT BINDING 165..169
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00100"
FT BINDING 219..222
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00100"
SQ SEQUENCE 610 AA; 65843 MW; D14AC5021660803B CRC64;
MQAPAVGGVR LPRGNGEVIR LARGASLSDF ADKIGANPAS LVQALFNLGE MVTATESVND
ETLELLGGEM NYTVQVVSPE DEDRELLESF DLSYGEDEGG EEDLAQRPPV VTVMGHVDHG
KTRLLDTIRK ANVREGEAGG ITQHIGAYQV DTHLNGEDRL ITFIDTPGHE AFTAMRARGA
KATDIAILVV AADDGVMPQT VEAVNHAQAA DVPIVVAVNK IDKEGADPTK IRGQLTEYGL
VPEEYGGDTM FVDISAKQGL NIEALLEAVL LTADASLDLR ANPDMDAQGV AIEAHLDRGR
GPVATVLVQR GTLRVGDSVV AGDAYGRVRR MVDEYGDDVE EALPSRPVQV IGFTSVPGAG
DNLLVVEEDR IARQIADRRN ARKRNALAAR SRKRISLEDL DSALKETSQL NLILKGDNSG
TVEALEEALL GIEMGDEVSL RVIDRGVGGV TETNVNLAAA SDAIIIGFNV RAEGKATELA
NREGVDIRYY SVIYQAIDEI ESALKGMLKP VYEEVELGRA EIRAIFKSSK IGNIAGCLVQ
SGIVRRNAKA RLLRDNVVVA ENLTISSLRR EKDDVVEVRE GYECGLTVTY SDIKVDDVIE
TYELQEKPRD
//
