ID   RNPH_ACTPJ              Reviewed;         238 AA.
AC   B0BRL3;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   26-FEB-2008, sequence version 1.
DT   04-NOV-2026, entry version 90.
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};
GN   OrderedLocusNames=APJL_0055;
OS   Actinobacillus pleuropneumoniae serotype 3 (strain JL03).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Pasteurellales; Pasteurellaceae; Actinobacillus.
OX   NCBI_TaxID=434271;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JL03;
RX   PubMed=18197260; DOI=10.1371/journal.pone.0001450;
RA   Xu Z., Zhou Y., Li L., Zhou R., Xiao S., Wan Y., Zhang S., Wang K., Li W.,
RA   Li L., Jin H., Kang M., Dalai B., Li T., Liu L., Cheng Y., Zhang L., Xu T.,
RA   Zheng H., Pu S., Wang B., Gu W., Zhang X.L., Zhu G.-F., Wang S.,
RA   Zhao G.-P., Chen H.;
RT   "Genome biology of Actinobacillus pleuropneumoniae JL03, an isolate of
RT   serotype 3 prevalent in China.";
RL   PLoS ONE 3:E1450-E1450(2008).
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=tRNA(n+1) + phosphate = tRNA(n) + a ribonucleoside 5'-
CC         diphosphate; 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; CP000687; ABY68661.1; -; Genomic_DNA.
DR   RefSeq; WP_005600009.1; NC_010278.1.
DR   AlphaFoldDB; B0BRL3; -.
DR   SMR; B0BRL3; -.
DR   KEGG; apj:APJL_0055; -.
DR   HOGENOM; CLU_050858_0_0_6; -.
DR   OMA; AACDTDM; -.
DR   GO; GO:0000175; F:3'-5'-RNA exonuclease 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:0031125; P:rRNA 3'-end processing; IEA:UniProtKB-ARBA.
DR   GO; GO:0016075; P:rRNA catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0008033; P:tRNA processing; IEA:UniProtKB-UniRule.
DR   CDD; cd11362; RNase_PH_bact; 1.
DR   FunFam; 3.30.230.70:FF:000003; Ribonuclease PH; 1.
DR   Gene3D; 3.30.230.70; GHMP Kinase, N-terminal domain; 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_Su5_D2-typ_SF.
DR   InterPro; IPR050080; RNase_PH.
DR   InterPro; IPR002381; RNase_PH_bac-type.
DR   InterPro; IPR018336; RNase_PH_CS.
DR   NCBIfam; TIGR01966; RNasePH; 1.
DR   PANTHER; PTHR11953; EXOSOME COMPLEX COMPONENT; 1.
DR   PANTHER; PTHR11953:SF0; EXOSOME COMPLEX COMPONENT RRP41; 1.
DR   Pfam; PF01138; RNase_PH; 1.
DR   Pfam; PF03725; RNase_PH_C; 1.
DR   SUPFAM; SSF55666; Ribonuclease PH domain 2-like; 1.
DR   SUPFAM; SSF54211; Ribosomal protein S5 domain 2-like; 1.
DR   PROSITE; PS01277; RIBONUCLEASE_PH; 1.
PE   3: Inferred from homology;
KW   Nucleotidyltransferase; RNA-binding; rRNA processing; Transferase;
KW   tRNA processing; tRNA-binding.
FT   CHAIN           1..238
FT                   /note="Ribonuclease PH"
FT                   /id="PRO_1000129313"
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   238 AA;  25998 MW;  7DCC277CED0CFCB3 CRC64;
     MRPNNRELNQ VRPVKITRHY TRYAEGSVLV EFGETKVLCN ATVEETVPRF LKGQQQGWVT
     AEYGMLPRST HSRMQREAAK GKQGGRTMEI QRLIARSLRA VVDLKALGER TVTVDCDVIQ
     ADGGTRTAAI TGACVALHDA MSKLVADGVL KENPMKGLVA AISVGIVDGN AVCDLEYVED
     SNAETDMNVV MVEDGRLVEV QGTAEGEPFS HMELLQLLDL AHQGINQLLD AQRKALAL
//