ID A0A1N6KFJ5_9BACT Unreviewed; 796 AA.
AC A0A1N6KFJ5;
DT 15-MAR-2017, integrated into UniProtKB/TrEMBL.
DT 15-MAR-2017, sequence version 1.
DT 28-JAN-2026, entry version 37.
DE RecName: Full=Polyribonucleotide nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_01595};
DE EC=2.7.7.8 {ECO:0000256|HAMAP-Rule:MF_01595};
DE AltName: Full=Polynucleotide phosphorylase {ECO:0000256|HAMAP-Rule:MF_01595};
DE Short=PNPase {ECO:0000256|HAMAP-Rule:MF_01595};
GN Name=pnp {ECO:0000256|HAMAP-Rule:MF_01595};
GN ORFNames=SAMN04488055_5755 {ECO:0000313|EMBL:SIO55335.1};
OS Chitinophaga niabensis.
OC Bacteria; Pseudomonadati; Bacteroidota; Chitinophagia; Chitinophagales;
OC Chitinophagaceae; Chitinophaga.
OX NCBI_TaxID=536979 {ECO:0000313|EMBL:SIO55335.1, ECO:0000313|Proteomes:UP000185003};
RN [1] {ECO:0000313|EMBL:SIO55335.1, ECO:0000313|Proteomes:UP000185003}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 24787 {ECO:0000313|EMBL:SIO55335.1,
RC ECO:0000313|Proteomes:UP000185003};
RA Jaros S., Januszkiewicz K., Wedrychowicz H.;
RL Submitted (NOV-2016) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Involved in mRNA degradation. Catalyzes the phosphorolysis of
CC single-stranded polyribonucleotides processively in the 3'- to 5'-
CC direction. {ECO:0000256|HAMAP-Rule:MF_01595}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=RNA(n+1) + phosphate = RNA(n) + a ribonucleoside 5'-
CC diphosphate; 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; Evidence={ECO:0000256|HAMAP-Rule:MF_01595};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01595};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01595}.
CC -!- SIMILARITY: Belongs to the polyribonucleotide nucleotidyltransferase
CC family. {ECO:0000256|ARBA:ARBA00007404, ECO:0000256|HAMAP-
CC Rule:MF_01595}.
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DR EMBL; FSRA01000002; SIO55335.1; -; Genomic_DNA.
DR RefSeq; WP_074242949.1; NZ_FSRA01000002.1.
DR AlphaFoldDB; A0A1N6KFJ5; -.
DR STRING; 536979.SAMN04488055_5755; -.
DR OrthoDB; 9804305at2; -.
DR Proteomes; UP000185003; Unassembled WGS sequence.
DR GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
DR GO; GO:0000175; F:3'-5'-RNA exonuclease activity; IEA:TreeGrafter.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004654; F:polyribonucleotide nucleotidyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006402; P:mRNA catabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:0006396; P:RNA processing; IEA:InterPro.
DR CDD; cd02393; KH-I_PNPase; 1.
DR CDD; cd11364; RNase_PH_PNPase_2; 1.
DR FunFam; 3.30.1370.10:FF:000001; Polyribonucleotide nucleotidyltransferase; 1.
DR FunFam; 3.30.230.70:FF:000001; Polyribonucleotide nucleotidyltransferase; 1.
DR FunFam; 2.40.50.140:FF:000189; Polyribonucleotide nucleotidyltransferase, putative; 1.
DR Gene3D; 3.30.230.70; GHMP Kinase, N-terminal domain; 2.
DR Gene3D; 3.30.1370.10; K Homology domain, type 1; 1.
DR Gene3D; 2.40.50.140; Nucleic acid-binding proteins; 1.
DR HAMAP; MF_01595; PNPase; 1.
DR InterPro; IPR001247; ExoRNase_PH_dom1.
DR InterPro; IPR015847; ExoRNase_PH_dom2.
DR InterPro; IPR036345; ExoRNase_PH_dom2_sf.
DR InterPro; IPR004087; KH_dom.
DR InterPro; IPR004088; KH_dom_type_1.
DR InterPro; IPR036612; KH_dom_type_1_sf.
DR InterPro; IPR012340; NA-bd_OB-fold.
DR InterPro; IPR012162; PNPase.
DR InterPro; IPR027408; PNPase/RNase_PH_dom_sf.
DR InterPro; IPR015848; PNPase_PH_RNA-bd_bac/org-type.
DR InterPro; IPR036456; PNPase_PH_RNA-bd_sf.
DR InterPro; IPR020568; Ribosomal_Su5_D2-typ_SF.
DR InterPro; IPR003029; S1_domain.
DR NCBIfam; TIGR03591; polynuc_phos; 1.
DR NCBIfam; NF008805; PRK11824.1; 1.
DR PANTHER; PTHR11252; POLYRIBONUCLEOTIDE NUCLEOTIDYLTRANSFERASE; 1.
DR PANTHER; PTHR11252:SF0; POLYRIBONUCLEOTIDE NUCLEOTIDYLTRANSFERASE 1, MITOCHONDRIAL; 1.
DR Pfam; PF00013; KH_1; 1.
DR Pfam; PF03726; PNPase; 1.
DR Pfam; PF01138; RNase_PH; 2.
DR Pfam; PF03725; RNase_PH_C; 1.
DR Pfam; PF00575; S1; 1.
DR PIRSF; PIRSF005499; PNPase; 1.
DR SMART; SM00322; KH; 1.
DR SMART; SM00316; S1; 1.
DR SUPFAM; SSF54791; Eukaryotic type KH-domain (KH-domain type I); 1.
DR SUPFAM; SSF50249; Nucleic acid-binding proteins; 1.
DR SUPFAM; SSF46915; Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3; 1.
DR SUPFAM; SSF55666; Ribonuclease PH domain 2-like; 2.
DR SUPFAM; SSF54211; Ribosomal protein S5 domain 2-like; 2.
DR PROSITE; PS50084; KH_TYPE_1; 1.
DR PROSITE; PS50126; S1; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01595};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01595};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_01595};
KW Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695, ECO:0000256|HAMAP-
KW Rule:MF_01595}; Reference proteome {ECO:0000313|Proteomes:UP000185003};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|HAMAP-
KW Rule:MF_01595};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01595}.
FT DOMAIN 629..698
FT /note="S1 motif"
FT /evidence="ECO:0000259|PROSITE:PS50126"
FT REGION 704..796
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 704..776
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 490
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01595"
FT BINDING 496
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01595"
SQ SEQUENCE 796 AA; 86855 MW; 115979DE67FF208B CRC64;
MNLTPASVKF DIGGGREVTI ETGKMARQAD GSVTVRLGNC ILLATVVASQ KPKPGQSFFP
LTVDYQEKFA SAGRIPGSFF KREGKLSDYE VLISRLIDRA LRPLFPDDYL CDVQVLVSLI
SSDKEVMPDA LAALAASAAL AVSDVPIQEI ISEVRVARVE GEFVINPTRT QLAAADMDFI
VAATAKNIMM VEGESKECSE EDLVKVIELG HEAIKVQVKA QEDLRALVGN PAKREYEKPH
QNEELKAKVA AFAQAKILEV SKGALGKHAR TDAFKKIEEE LVESLGELPE EDAPLVGEYF
HDLEKETVRN MILDEKVRLD GRVLDQVRPL AMEVDLLPSP HGSALFTRGE TQSLTTVTLG
TPDDELLIES AANSAYSKFI LHYNFPPFST GEVKMMRGPG RREVGHGNLA LRSLKQMMPG
SDYAYTVRVV SDILESNGSS SMATVCAGSL ALMDAGVPLP KHVSGIAMGL ISRASDGKWA
VLSDILGDED HLGDMDFKVT GTRDGICGVQ MDIKVDGLSM DVMRAALAQA RQGRLHILEA
MYTAMPAFRP EPKPHAPRME KLIIDREFIG AVIGPGGKVI QEIQRETGTT INIEEVGQTG
EVSIFSAQKE NLDKAMAWVK GIVSVPEVGE VYESTVKSVM PYGAFVEFMP GKQGLLHISE
VSWKRLETMD GVLAEGDKVK VKLVGTDPKT GKFKLSRKVL MDKPEGYVER PEREDRGDRG
DRGDRGDRGG DRGDRRGGGD RPRGDRDRGG DRGGDRPRFD RGGDRGDRGD RGDRGGYNRP
PQQTEGPIEG PVFDEQ
//
