ID   RF3_BUCAP               Reviewed;         529 AA.
AC   Q8K935;
DT   08-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   27-MAR-2024, entry version 120.
DE   RecName: Full=Peptide chain release factor 3 {ECO:0000255|HAMAP-Rule:MF_00072};
DE            Short=RF-3 {ECO:0000255|HAMAP-Rule:MF_00072};
GN   Name=prfC {ECO:0000255|HAMAP-Rule:MF_00072};
GN   OrderedLocusNames=BUsg_523;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
CC   -!- FUNCTION: Increases the formation of ribosomal termination complexes
CC       and stimulates activities of RF-1 and RF-2. It binds guanine
CC       nucleotides and has strong preference for UGA stop codons. It may
CC       interact directly with the ribosome. The stimulation of RF-1 and RF-2
CC       is significantly reduced by GTP and GDP, but not by GMP.
CC       {ECO:0000255|HAMAP-Rule:MF_00072}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00072}.
CC   -!- SIMILARITY: Belongs to the TRAFAC class translation factor GTPase
CC       superfamily. Classic translation factor GTPase family. PrfC subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_00072}.
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DR   EMBL; AE013218; AAM68066.1; -; Genomic_DNA.
DR   RefSeq; WP_011054032.1; NC_004061.1.
DR   AlphaFoldDB; Q8K935; -.
DR   SMR; Q8K935; -.
DR   STRING; 198804.BUsg_523; -.
DR   GeneID; 75258590; -.
DR   KEGG; bas:BUsg_523; -.
DR   eggNOG; COG4108; Bacteria.
DR   HOGENOM; CLU_002794_2_1_6; -.
DR   Proteomes; UP000000416; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003924; F:GTPase activity; IEA:InterPro.
DR   GO; GO:0097216; F:guanosine tetraphosphate binding; IEA:UniProt.
DR   GO; GO:0016149; F:translation release factor activity, codon specific; IEA:UniProtKB-UniRule.
DR   GO; GO:0006449; P:regulation of translational termination; IEA:UniProtKB-UniRule.
DR   CDD; cd04169; RF3; 1.
DR   Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR   Gene3D; 3.30.70.3280; Peptide chain release factor 3, domain III; 1.
DR   Gene3D; 2.40.30.10; Translation factors; 1.
DR   HAMAP; MF_00072; Rel_fac_3; 1.
DR   InterPro; IPR035647; EFG_III/V.
DR   InterPro; IPR004161; EFTu-like_2.
DR   InterPro; IPR031157; G_TR_CS.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR004548; PrfC.
DR   InterPro; IPR032090; RF3_C.
DR   InterPro; IPR038467; RF3_dom_3_sf.
DR   InterPro; IPR041732; RF3_GTP-bd.
DR   InterPro; IPR005225; Small_GTP-bd_dom.
DR   InterPro; IPR000795; T_Tr_GTP-bd_dom.
DR   InterPro; IPR009000; Transl_B-barrel_sf.
DR   NCBIfam; TIGR00503; prfC; 1.
DR   NCBIfam; TIGR00231; small_GTP; 1.
DR   PANTHER; PTHR43556; PEPTIDE CHAIN RELEASE FACTOR RF3; 1.
DR   PANTHER; PTHR43556:SF2; PEPTIDE CHAIN RELEASE FACTOR RF3; 1.
DR   Pfam; PF00009; GTP_EFTU; 1.
DR   Pfam; PF03144; GTP_EFTU_D2; 1.
DR   Pfam; PF16658; RF3_C; 1.
DR   PRINTS; PR00315; ELONGATNFCT.
DR   SUPFAM; SSF54980; EF-G C-terminal domain-like; 1.
DR   SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR   SUPFAM; SSF50447; Translation proteins; 1.
DR   PROSITE; PS00301; G_TR_1; 1.
DR   PROSITE; PS51722; G_TR_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; GTP-binding; Nucleotide-binding; Protein biosynthesis.
FT   CHAIN           1..529
FT                   /note="Peptide chain release factor 3"
FT                   /id="PRO_0000210934"
FT   DOMAIN          11..280
FT                   /note="tr-type G"
FT   BINDING         20..27
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00072"
FT   BINDING         88..92
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00072"
FT   BINDING         142..145
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00072"
SQ   SEQUENCE   529 AA;  60738 MW;  B13984DD4305833B CRC64;
     MFNINHQLEL SKRRTFAIIS HPDAGKTTVT EKMLLLGKVI RTSGTIKARG NGKYAKSDWM
     NIEKKRGISI TTSVMQFTYK NTLMNLLDTP GHEDFSEDTY RILTAVDCCL LIIDAAKGIE
     DRTKKLINVS RLHNTPVITF INKLDRDSRE AIEILDEIEK ELSLDCIPIT WPISCGKNFK
     GICHIHDKIV NLYQKNIVKK INFNSFSSFL NEHSLKEYLG ADLYTQLHEE LKLAAYVYPK
     FSKKKFLKGD ITPVLFGSAL NNFGIDHILE SLIKWAPSPI YRVTKTRKVE PEEKKFTGFV
     FKIQANMDLK HRDRIAFMRI VSGKYKKGIK LRHVRMKKDI IVSDAFSFLA GDRFSIEHAY
     PGDVIGIHNH GTIKIGDTFT EGEEIKFVGI PSFAPEVFRR IFLKNPLQQK KLKKGLSQLS
     EEGAIQVFRP MINNSLILGA IGILQFDVVI ERLKIEYKID AIYERVNISL ARWIRSKNKK
     IISDFINKNK SYLALDISNQ LIYLAPNKAN LAVIKNIYNN IFFEKTREQ
//