ID IF2_PARUW Reviewed; 920 AA. AC Q6MD64; DT 21-MAR-2006, integrated into UniProtKB/Swiss-Prot. DT 05-JUL-2004, sequence version 1. DT 07-OCT-2020, entry version 104. DE RecName: Full=Translation initiation factor IF-2 {ECO:0000255|HAMAP-Rule:MF_00100}; GN Name=infB {ECO:0000255|HAMAP-Rule:MF_00100}; OrderedLocusNames=pc0761; OS Protochlamydia amoebophila (strain UWE25). OC Bacteria; Chlamydiae; Parachlamydiales; Parachlamydiaceae; OC Candidatus Protochlamydia. OX NCBI_TaxID=264201; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=UWE25; RX PubMed=15073324; DOI=10.1126/science.1096330; RA Horn M., Collingro A., Schmitz-Esser S., Beier C.L., Purkhold U., RA Fartmann B., Brandt P., Nyakatura G.J., Droege M., Frishman D., Rattei T., RA Mewes H.-W., Wagner M.; RT "Illuminating the evolutionary history of chlamydiae."; RL Science 304:728-730(2004). 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:0000255|HAMAP-Rule:MF_00100}. CC -!- SUBCELLULAR LOCATION: Cytoplasm {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}. 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; BX908798; CAF23485.1; -; Genomic_DNA. DR RefSeq; WP_011175311.1; NC_005861.1. DR SMR; Q6MD64; -. DR STRING; 264201.pc0761; -. DR PRIDE; Q6MD64; -. DR EnsemblBacteria; CAF23485; CAF23485; pc0761. DR KEGG; pcu:pc0761; -. DR eggNOG; COG0532; Bacteria. DR HOGENOM; CLU_006301_3_0_0; -. DR KO; K02519; -. DR OMA; NRDNRTG; -. DR OrthoDB; 347113at2; -. DR BioCyc; CPRO264201:G1G3R-738-MONOMER; -. DR Proteomes; UP000000529; Chromosome. 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 Gene3D; 3.40.50.10050; -; 1. DR HAMAP; MF_00100_B; IF_2_B; 1. DR InterPro; IPR006847; IF2_N. DR InterPro; IPR027417; P-loop_NTPase. DR InterPro; IPR005225; Small_GTP-bd_dom. DR InterPro; IPR000795; TF_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 PANTHER; PTHR43381; PTHR43381; 1. DR Pfam; PF00009; GTP_EFTU; 1. DR Pfam; PF11987; IF-2; 1. DR Pfam; PF04760; IF2_N; 1. DR SUPFAM; SSF50447; SSF50447; 2. DR SUPFAM; SSF52156; SSF52156; 1. DR SUPFAM; SSF52540; SSF52540; 1. DR TIGRFAMs; TIGR00487; IF-2; 1. DR TIGRFAMs; TIGR00231; small_GTP; 1. DR PROSITE; PS51722; G_TR_2; 1. DR PROSITE; PS01176; IF2; 1. PE 3: Inferred from homology; KW Cytoplasm; GTP-binding; Initiation factor; Nucleotide-binding; KW Protein biosynthesis; Reference proteome. FT CHAIN 1..920 FT /note="Translation initiation factor IF-2" FT /id="PRO_0000228221" FT DOMAIN 418..585 FT /note="tr-type G" FT NP_BIND 427..434 FT /note="GTP" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00100" FT NP_BIND 473..477 FT /note="GTP" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00100" FT NP_BIND 527..530 FT /note="GTP" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00100" FT REGION 427..434 FT /note="G1" FT /evidence="ECO:0000250" FT REGION 452..456 FT /note="G2" FT /evidence="ECO:0000250" FT REGION 473..476 FT /note="G3" FT /evidence="ECO:0000250" FT REGION 527..530 FT /note="G4" FT /evidence="ECO:0000250" FT REGION 563..565 FT /note="G5" FT /evidence="ECO:0000250" SQ SEQUENCE 920 AA; 101783 MW; 67B581DDB0A94631 CRC64; MAKNLKLNIK NAQIAEAINL SGLKSKLAKK KEEESTQKSS AAKSTSKTTK TEVEELPKEE APRIRARSKS AFAEAPADQS SKEITEEIKT SQDEESISRE AAKVIEEKSR MKTSAEIRQE IFGEELSQAP SKDSSQELEF AEKIKTNETK PTTFIEPTIA SPAPAEPKSL VEDKTSITHV YQNQKRDIPI RESLPPQEKL GPTGKHMRDF IKPKPQPERV SRPLEANNSN QKEVSEANKE KLDKNKIKPK SKGFEEPKVL TADDDARKGL KSPKFKEFKD IKPARKPETR QFDARDRQGL RTSDEDQHWR KKKNKQRQNI QEDTTIRPTS LKVRLPISIK DLASEMKLKA SQLVGKLFLQ GIVVTLNDLL EDETTAQLLG QEFGCEITID TAEEKRIQIT DKSIREELQQ SPTDQLQLRP PVVAFMGHVD HGKTSLIDAI RKSNRAAGEA GAITQHIGAF RCHTTVGDIA ILDTPGHEAF SAMRARGADV TDIVVLVVAG DEGLRQQSIE AIQHARAANV IIVVAINKCD KPNFNPDNVY RQLAEQNLLP EPWGGQTITV NCSAVTGEGI PELLEMLALQ AEVLELRANP SMRARGTVLE SEMHKGLGSV ATILVQNGTL KRGDALVFGL LWGRVKTMHD EYGKELQEAG PSTPVEITGL SGLPEAGQEF IVVKNEKEAR EIANVRSEGA RQNTFMLQQK KKVSMENMLQ QASATGKKML NIVLRADVQG SLEALKVALL KIESDKADLN IIFNGVGEVS ESDVQLAAAS KAIVLGFHTQ IESHAEALVK QLGVQVRLHN IIYHAIDDIK VLMAGLLEKI AQETEKGKAI VKATFKSSQA GIIAGCQVIE GSIHRNNYVR LKRGQEVIWK GTISSLKRVK EDVREVQKGI ECGILLNNFT DILEGDIIEA YDITYISQEL //