AC MF_01595; DC Protein; auto TR HAMAP; MF_01595; -; 1; level=0 XX Names: PNPase XX ID PNP DE RecName: Full=Polyribonucleotide nucleotidyltransferase; DE EC=2.7.7.8; DE AltName: Full=Polynucleotide phosphorylase; DE Short=PNPase; GN Name=pnp; XX CC -!- FUNCTION: Involved in mRNA degradation. Catalyzes the phosphorolysis of CC single-stranded polyribonucleotides processively in the 3'- to 5'- CC direction. CC -!- CATALYTIC ACTIVITY: CC Reaction=phosphate + RNA(n+1) = a ribonucleoside 5'-diphosphate + CC RNA(n); Xref=Rhea:RHEA:22096, Rhea:RHEA-COMP:14527, Rhea:RHEA- CC COMP:17342, ChEBI:CHEBI:43474, ChEBI:CHEBI:57930, ChEBI:CHEBI:140395; CC EC=2.7.7.8; CC -!- COFACTOR: CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; case CC -!- SUBUNIT: Component of the RNA degradosome, which is a multiprotein CC complex involved in RNA processing and mRNA degradation. end case CC -!- SUBCELLULAR LOCATION: Cytoplasm. CC -!- SIMILARITY: Belongs to the polyribonucleotide nucleotidyltransferase CC family. XX DR PROSITE; PS50084; KH_TYPE_1; 1; trigger=yes DR PROSITE; PS50126; S1; 1; trigger=yes DR Pfam; PF00013; KH_1; 1; trigger=no DR Pfam; PF03726; PNPase; 1; trigger=no DR Pfam; PF01138; RNase_PH; 2; trigger=no DR Pfam; PF03725; RNase_PH_C; 2; trigger=no DR Pfam; PF00575; S1; 1; trigger=no DR PIRSF; PIRSF005499; PNPase; 1; trigger=no DR NCBIfam; TIGR03591; Polynuc_phos; 1; trigger=no DR NCBIfam; TIGR02696; PppGpp_PNP; 1; trigger=no XX KW Cytoplasm KW Magnesium KW Metal-binding KW Nucleotidyltransferase KW RNA-binding KW Transferase XX GO GO:0004654; F:polyribonucleotide nucleotidyltransferase activity GO GO:0000287; F:magnesium ion binding GO GO:0003723; F:RNA binding GO GO:0006402; P:mRNA catabolic process GO GO:0005737; C:cytoplasm XX FT From: PNP_ECOLI (P05055) FT BINDING 486 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT Condition: D FT BINDING 492 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT Condition: D XX Size: 686-914; Related: None; Template: P05055; Q8ZLT3; P50849; Q53597; Scope: Bacteria Fusion: Nter: None Cter: None Duplicate: in ALKMQ Plasmid: None Comments: None XX # Revision 1.20 2023/06/01 //