ID IF2G_NATPD Reviewed; 409 AA.
AC Q3IMM5;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 08-NOV-2005, sequence version 1.
DT 27-MAR-2024, entry version 111.
DE RecName: Full=Translation initiation factor 2 subunit gamma {ECO:0000255|HAMAP-Rule:MF_00119};
DE EC=3.6.5.3 {ECO:0000255|HAMAP-Rule:MF_00119};
DE AltName: Full=aIF2-gamma {ECO:0000255|HAMAP-Rule:MF_00119};
DE AltName: Full=eIF-2-gamma {ECO:0000255|HAMAP-Rule:MF_00119};
GN Name=eif2g {ECO:0000255|HAMAP-Rule:MF_00119}; OrderedLocusNames=NP_5084A;
OS Natronomonas pharaonis (strain ATCC 35678 / DSM 2160 / CIP 103997 / JCM
OS 8858 / NBRC 14720 / NCIMB 2260 / Gabara) (Halobacterium pharaonis).
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC Haloarculaceae; Natronomonas.
OX NCBI_TaxID=348780;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 35678 / DSM 2160 / CIP 103997 / JCM 8858 / NBRC 14720 / NCIMB
RC 2260 / Gabara;
RX PubMed=16169924; DOI=10.1101/gr.3952905;
RA Falb M., Pfeiffer F., Palm P., Rodewald K., Hickmann V., Tittor J.,
RA Oesterhelt D.;
RT "Living with two extremes: conclusions from the genome sequence of
RT Natronomonas pharaonis.";
RL Genome Res. 15:1336-1343(2005).
CC -!- FUNCTION: eIF-2 functions in the early steps of protein synthesis by
CC forming a ternary complex with GTP and initiator tRNA.
CC {ECO:0000255|HAMAP-Rule:MF_00119}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + H2O = GDP + H(+) + phosphate; Xref=Rhea:RHEA:19669,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:37565,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:58189; EC=3.6.5.3;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00119};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00119};
CC -!- SUBUNIT: Heterotrimer composed of an alpha, a beta and a gamma chain.
CC {ECO:0000255|HAMAP-Rule:MF_00119}.
CC -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC superfamily. Classic translation factor GTPase family. EIF2G subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00119}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CR936257; CAI50633.1; -; Genomic_DNA.
DR RefSeq; WP_011324243.1; NC_007426.1.
DR AlphaFoldDB; Q3IMM5; -.
DR SMR; Q3IMM5; -.
DR STRING; 348780.NP_5084A; -.
DR EnsemblBacteria; CAI50633; CAI50633; NP_5084A.
DR GeneID; 3703269; -.
DR KEGG; nph:NP_5084A; -.
DR eggNOG; arCOG01563; Archaea.
DR HOGENOM; CLU_027154_0_1_2; -.
DR OrthoDB; 7798at2157; -.
DR Proteomes; UP000002698; Chromosome.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003924; F:GTPase activity; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0003746; F:translation elongation factor activity; IEA:UniProtKB-UniRule.
DR GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-KW.
DR GO; GO:0000049; F:tRNA binding; IEA:InterPro.
DR CDD; cd01888; eIF2_gamma; 1.
DR CDD; cd03688; eIF2_gamma_II; 1.
DR CDD; cd15490; eIF2_gamma_III; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR Gene3D; 2.40.30.10; Translation factors; 2.
DR HAMAP; MF_00119; eIF_2_gamma; 1.
DR InterPro; IPR015256; eIF2g_C.
DR InterPro; IPR044127; eIF2g_dom_2.
DR InterPro; IPR044128; eIF2g_GTP-bd.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR005225; Small_GTP-bd_dom.
DR InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR InterPro; IPR022424; TIF2_gsu.
DR InterPro; IPR009000; Transl_B-barrel_sf.
DR InterPro; IPR009001; Transl_elong_EF1A/Init_IF2_C.
DR NCBIfam; TIGR03680; eif2g_arch; 1.
DR NCBIfam; TIGR00231; small_GTP; 1.
DR PANTHER; PTHR42854; EUKARYOTIC TRANSLATION INITIATION FACTOR 2 SUBUNIT 3 FAMILY MEMBER; 1.
DR PANTHER; PTHR42854:SF3; EUKARYOTIC TRANSLATION INITIATION FACTOR 2 SUBUNIT 3-RELATED; 1.
DR Pfam; PF09173; eIF2_C; 1.
DR Pfam; PF00009; GTP_EFTU; 1.
DR PRINTS; PR00315; ELONGATNFCT.
DR SUPFAM; SSF50465; EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain; 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; Hydrolase; Initiation factor; Magnesium; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome.
FT CHAIN 1..409
FT /note="Translation initiation factor 2 subunit gamma"
FT /id="PRO_1000015792"
FT DOMAIN 7..203
FT /note="tr-type G"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT REGION 16..23
FT /note="G1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT REGION 44..48
FT /note="G2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT REGION 90..93
FT /note="G3"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT REGION 146..149
FT /note="G4"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT REGION 181..183
FT /note="G5"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 19..24
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 19
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 23
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 44
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 46
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 146..149
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
FT BINDING 181..183
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00119"
SQ SEQUENCE 409 AA; 43939 MW; 19FDAEFBDA40D46F CRC64;
MTQKHRQPEV NIGLVGHVDH GKTTLVESLS GEWTDQHSEE MKRGISIRLG YADATFRECP
ELDEPDRYTV EETCPDGSES EHLRTVSFVD APGHETLMAT MLSGAAIMDG AVLVIAANEP
VPRAQTEEHL MALDIIGIDN IVIAQNKIDL VDREQALDNY EAIEEFVDGT VAEDAPVVPI
SAQQDVNMDL LMQTIESEIP TPDRDPDADA RLQVARSFDI NRPGTTWEDL TGGVLGGSLT
QGQLEADDDI EIKPGREIEE GGQSEYQPVE TTVRSLQAGG EFVDTVTPGG LLGVGTGLDP
SLTKGDALAG QVAGPPGSLP PTRESFTMDV ELLDRVVGED AEEIEPISTG EPLMLTVGTA
TTVGSVTSAR DDECEVQLKR PVCAPDGSKI AINRRVGARW RLIGVGTLR
//
