ID   RNPH_PSET1              Reviewed;         237 AA.
AC   Q3IJI0;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-NOV-2005, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Ribonuclease PH {ECO:0000255|HAMAP-Rule:MF_00564};
DE            Short=RNase PH {ECO:0000255|HAMAP-Rule:MF_00564};
DE            EC=2.7.7.56 {ECO:0000255|HAMAP-Rule:MF_00564};
DE   AltName: Full=tRNA nucleotidyltransferase {ECO:0000255|HAMAP-Rule:MF_00564};
GN   Name=rph {ECO:0000255|HAMAP-Rule:MF_00564}; OrderedLocusNames=PSHAa2788;
OS   Pseudoalteromonas translucida (strain TAC 125).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Pseudoalteromonadaceae; Pseudoalteromonas.
OX   NCBI_TaxID=326442;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TAC 125;
RX   PubMed=16169927; DOI=10.1101/gr.4126905;
RA   Medigue C., Krin E., Pascal G., Barbe V., Bernsel A., Bertin P.N.,
RA   Cheung F., Cruveiller S., D'Amico S., Duilio A., Fang G., Feller G., Ho C.,
RA   Mangenot S., Marino G., Nilsson J., Parrilli E., Rocha E.P.C., Rouy Z.,
RA   Sekowska A., Tutino M.L., Vallenet D., von Heijne G., Danchin A.;
RT   "Coping with cold: the genome of the versatile marine Antarctica bacterium
RT   Pseudoalteromonas haloplanktis TAC125.";
RL   Genome Res. 15:1325-1335(2005).
CC   -!- FUNCTION: Phosphorolytic 3'-5' exoribonuclease that plays an important
CC       role in tRNA 3'-end maturation. Removes nucleotide residues following
CC       the 3'-CCA terminus of tRNAs; can also add nucleotides to the ends of
CC       RNA molecules by using nucleoside diphosphates as substrates, but this
CC       may not be physiologically important. Probably plays a role in
CC       initiation of 16S rRNA degradation (leading to ribosome degradation)
CC       during starvation. {ECO:0000255|HAMAP-Rule:MF_00564}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=phosphate + tRNA(n+1) = a ribonucleoside 5'-diphosphate +
CC         tRNA(n); Xref=Rhea:RHEA:10628, Rhea:RHEA-COMP:17343, Rhea:RHEA-
CC         COMP:17344, ChEBI:CHEBI:43474, ChEBI:CHEBI:57930, ChEBI:CHEBI:173114;
CC         EC=2.7.7.56; Evidence={ECO:0000255|HAMAP-Rule:MF_00564};
CC   -!- SUBUNIT: Homohexameric ring arranged as a trimer of dimers.
CC       {ECO:0000255|HAMAP-Rule:MF_00564}.
CC   -!- SIMILARITY: Belongs to the RNase PH family. {ECO:0000255|HAMAP-
CC       Rule:MF_00564}.
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DR   EMBL; CR954246; CAI87831.1; -; Genomic_DNA.
DR   RefSeq; WP_011329426.1; NC_007481.1.
DR   AlphaFoldDB; Q3IJI0; -.
DR   SMR; Q3IJI0; -.
DR   STRING; 326442.PSHAa2788; -.
DR   EnsemblBacteria; CAI87831; CAI87831; PSHAa2788.
DR   KEGG; pha:PSHAa2788; -.
DR   eggNOG; COG0689; Bacteria.
DR   HOGENOM; CLU_050858_0_0_6; -.
DR   OMA; KGKGQGW; -.
DR   OrthoDB; 1824064at2; -.
DR   BioCyc; PHAL326442:PSHA_RS13695-MON; -.
DR   Proteomes; UP000006843; Chromosome I.
DR   GO; GO:0000175; F:3'-5'-exoribonuclease activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009022; F:tRNA nucleotidyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016075; P:rRNA catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0006364; P:rRNA processing; IEA:UniProtKB-KW.
DR   GO; GO:0008033; P:tRNA processing; IEA:UniProtKB-UniRule.
DR   CDD; cd11362; RNase_PH_bact; 1.
DR   Gene3D; 3.30.230.70; -; 1.
DR   HAMAP; MF_00564; RNase_PH; 1.
DR   InterPro; IPR001247; ExoRNase_PH_dom1.
DR   InterPro; IPR015847; ExoRNase_PH_dom2.
DR   InterPro; IPR036345; ExoRNase_PH_dom2_sf.
DR   InterPro; IPR027408; PNPase/RNase_PH_dom_sf.
DR   InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR   InterPro; IPR002381; RNase_PH_bac-type.
DR   InterPro; IPR018336; RNase_PH_CS.
DR   Pfam; PF01138; RNase_PH; 1.
DR   Pfam; PF03725; RNase_PH_C; 1.
DR   SUPFAM; SSF54211; SSF54211; 1.
DR   SUPFAM; SSF55666; SSF55666; 1.
DR   TIGRFAMs; TIGR01966; RNasePH; 1.
DR   PROSITE; PS01277; RIBONUCLEASE_PH; 1.
PE   3: Inferred from homology;
KW   Nucleotidyltransferase; Reference proteome; RNA-binding; rRNA processing;
KW   Transferase; tRNA processing; tRNA-binding.
FT   CHAIN           1..237
FT                   /note="Ribonuclease PH"
FT                   /id="PRO_1000024850"
FT   BINDING         86
FT                   /ligand="phosphate"
FT                   /ligand_id="ChEBI:CHEBI:43474"
FT                   /ligand_note="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00564"
FT   BINDING         124..126
FT                   /ligand="phosphate"
FT                   /ligand_id="ChEBI:CHEBI:43474"
FT                   /ligand_note="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00564"
SQ   SEQUENCE   237 AA;  25738 MW;  E5D38DC0E84CD3E7 CRC64;
     MRPSERTANQ IRPVTFTRNY TLHAEGSVLV EFGNTKVLCT ATVESGVPRF MKGQGKGWIN
     AEYGMLPRAT HTRNAREAAR GKQGGRTMEI QRLIARALRA AVDLKALGEN TITIDCDVIQ
     ADGGTRTASI SGACVALVDA LTHMRAKGMI NSNPLKYMIA AISVGIYKGQ AISDLEYIED
     SAAETDMNVI LTETGKIIEI QGTAEGEPFS FDELDELLTL AKHSIREIID VQKQALA