ID J4U9Y1_9FIRM Unreviewed; 446 AA.
AC J4U9Y1;
DT 31-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 31-OCT-2012, sequence version 1.
DT 27-MAR-2024, entry version 71.
DE RecName: Full=Multifunctional fusion protein {ECO:0000256|HAMAP-Rule:MF_00564, ECO:0000256|HAMAP-Rule:MF_01405};
DE Includes:
DE RecName: Full=dITP/XTP pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE EC=3.6.1.66 {ECO:0000256|HAMAP-Rule:MF_01405};
DE AltName: Full=Non-canonical purine NTP pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE AltName: Full=Non-standard purine NTP pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE AltName: Full=Nucleoside-triphosphate diphosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE AltName: Full=Nucleoside-triphosphate pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE Short=NTPase {ECO:0000256|HAMAP-Rule:MF_01405};
DE Includes:
DE RecName: Full=Ribonuclease PH {ECO:0000256|HAMAP-Rule:MF_00564};
DE Short=RNase PH {ECO:0000256|HAMAP-Rule:MF_00564};
DE EC=2.7.7.56 {ECO:0000256|HAMAP-Rule:MF_00564};
DE AltName: Full=tRNA nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_00564};
GN Name=rph {ECO:0000256|HAMAP-Rule:MF_00564};
GN ORFNames=HMPREF1142_1531 {ECO:0000313|EMBL:EJP18897.1};
OS Peptostreptococcaceae bacterium AS15.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Peptostreptococcaceae.
OX NCBI_TaxID=936556 {ECO:0000313|EMBL:EJP18897.1, ECO:0000313|Proteomes:UP000006605};
RN [1] {ECO:0000313|EMBL:EJP18897.1, ECO:0000313|Proteomes:UP000006605}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AS15 {ECO:0000313|EMBL:EJP18897.1,
RC ECO:0000313|Proteomes:UP000006605};
RA Durkin A.S., McCorrison J., Torralba M., Gillis M., Methe B., Sutton G.,
RA Nelson K.E.;
RL Submitted (JUL-2012) to the EMBL/GenBank/DDBJ databases.
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:0000256|HAMAP-Rule:MF_00564}.
CC -!- FUNCTION: Pyrophosphatase that catalyzes the hydrolysis of nucleoside
CC triphosphates to their monophosphate derivatives, with a high
CC preference for the non-canonical purine nucleotides XTP (xanthosine
CC triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to
CC function as a house-cleaning enzyme that removes non-canonical purine
CC nucleotides from the nucleotide pool, thus preventing their
CC incorporation into DNA/RNA and avoiding chromosomal lesions.
CC {ECO:0000256|HAMAP-Rule:MF_01405}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + ITP = diphosphate + H(+) + IMP; Xref=Rhea:RHEA:29399,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:58053, ChEBI:CHEBI:61402; EC=3.6.1.66;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01405};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + XTP = diphosphate + H(+) + XMP; Xref=Rhea:RHEA:28610,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:57464, ChEBI:CHEBI:61314; EC=3.6.1.66;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01405};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=dITP + H2O = dIMP + diphosphate + H(+); Xref=Rhea:RHEA:28342,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:61194, ChEBI:CHEBI:61382; EC=3.6.1.66;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01405};
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:0000256|HAMAP-Rule:MF_00564};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01405};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-Rule:MF_01405};
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01405}.
CC -!- SUBUNIT: Homohexameric ring arranged as a trimer of dimers.
CC {ECO:0000256|HAMAP-Rule:MF_00564}.
CC -!- SIMILARITY: Belongs to the HAM1 NTPase family.
CC {ECO:0000256|ARBA:ARBA00008023, ECO:0000256|HAMAP-Rule:MF_01405,
CC ECO:0000256|RuleBase:RU003781}.
CC -!- SIMILARITY: Belongs to the RNase PH family. {ECO:0000256|HAMAP-
CC Rule:MF_00564}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EJP18897.1}.
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DR EMBL; ALJM01000049; EJP18897.1; -; Genomic_DNA.
DR AlphaFoldDB; J4U9Y1; -.
DR PATRIC; fig|936556.4.peg.2147; -.
DR OrthoDB; 9807456at2; -.
DR Proteomes; UP000006605; Unassembled WGS sequence.
DR GO; GO:0000175; F:3'-5'-RNA exonuclease activity; IEA:UniProtKB-UniRule.
DR GO; GO:0035870; F:dITP diphosphatase activity; IEA:UniProtKB-EC.
DR GO; GO:0036220; F:ITP diphosphatase activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR GO; GO:0017111; F:ribonucleoside triphosphate phosphatase activity; IEA:InterPro.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009022; F:tRNA nucleotidyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0036222; F:XTP diphosphatase activity; IEA:UniProtKB-EC.
DR GO; GO:0009117; P:nucleotide metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0009146; P:purine nucleoside triphosphate catabolic process; 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; cd00515; HAM1; 1.
DR CDD; cd11362; RNase_PH_bact; 1.
DR Gene3D; 3.90.950.10; -; 1.
DR Gene3D; 3.30.230.70; GHMP Kinase, N-terminal domain; 1.
DR HAMAP; MF_01405; Non_canon_purine_NTPase; 1.
DR HAMAP; MF_00564; RNase_PH; 1.
DR InterPro; IPR020922; dITP/XTP_pyrophosphatase.
DR InterPro; IPR001247; ExoRNase_PH_dom1.
DR InterPro; IPR015847; ExoRNase_PH_dom2.
DR InterPro; IPR036345; ExoRNase_PH_dom2_sf.
DR InterPro; IPR029001; ITPase-like_fam.
DR InterPro; IPR027408; PNPase/RNase_PH_dom_sf.
DR InterPro; IPR002637; RdgB/HAM1.
DR InterPro; IPR020568; Ribosomal_Su5_D2-typ_SF.
DR InterPro; IPR002381; RNase_PH_bac-type.
DR InterPro; IPR018336; RNase_PH_CS.
DR NCBIfam; TIGR00042; RdgB/HAM1 family non-canonical purine NTP pyrophosphatase; 1.
DR NCBIfam; TIGR01966; RNasePH; 1.
DR PANTHER; PTHR11067:SF9; INOSINE TRIPHOSPHATE PYROPHOSPHATASE; 1.
DR PANTHER; PTHR11067; INOSINE TRIPHOSPHATE PYROPHOSPHATASE/HAM1 PROTEIN; 1.
DR Pfam; PF01725; Ham1p_like; 1.
DR Pfam; PF01138; RNase_PH; 1.
DR Pfam; PF03725; RNase_PH_C; 1.
DR SUPFAM; SSF52972; ITPase-like; 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 Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01405};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01405};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01405}; Nucleotide metabolism {ECO:0000256|HAMAP-Rule:MF_01405};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01405};
KW Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_00564,
KW ECO:0000313|EMBL:EJP18897.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000006605};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022555, ECO:0000256|HAMAP-
KW Rule:MF_00564};
KW rRNA processing {ECO:0000256|ARBA:ARBA00022552, ECO:0000256|HAMAP-
KW Rule:MF_00564};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_00564, ECO:0000313|EMBL:EJP18897.1};
KW tRNA processing {ECO:0000256|ARBA:ARBA00022694, ECO:0000256|HAMAP-
KW Rule:MF_00564};
KW tRNA-binding {ECO:0000256|ARBA:ARBA00022555, ECO:0000256|HAMAP-
KW Rule:MF_00564}.
FT DOMAIN 6..136
FT /note="Exoribonuclease phosphorolytic"
FT /evidence="ECO:0000259|Pfam:PF01138"
FT DOMAIN 154..220
FT /note="Exoribonuclease phosphorolytic"
FT /evidence="ECO:0000259|Pfam:PF03725"
FT ACT_SITE 318
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 82
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /ligand_note="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00564"
FT BINDING 120..122
FT /ligand="phosphate"
FT /ligand_id="ChEBI:CHEBI:43474"
FT /ligand_note="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00564"
FT BINDING 255..260
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 289
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 318
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 319
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 401..404
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 427
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 432..433
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
SQ SEQUENCE 446 AA; 49524 MW; 789F3120BED3C978 CRC64;
MRANNELRRI RITKNYAGYA DGSVLIEFGN TKVICTASVE EKVPPFLKNS GTGWISAEYS
MLPGSTKQRK VRDSTRGKID GRSQEIQRLI GRSLRNAVDF TKLGERTIWI DCDVIQADGG
TRTTSINGAF IAMALAVKKL YDRKIISQFP IDSFISAISV GIVRGENVLD LCYEQDSNAQ
VDMNVVMTNK GEFVEIQGTG EQTPFSRNSL NELLTLAEEA NEKIVSLQKE ILGDEITYLI
TGEKEPKVEE VLIATTNEHK LDEIGKILTK YGTKYKSLSD FNLQDVDVEE TGTTFEENAL
IKAREYCKLT NTVVLSDDSG LMVDALKGAP GVYSKRFSNE EPRDIKNNEK LLKSLMGLTS
DERGAKFVSV VALVFPNGEE HVFRGECHGK IGFAPMGENG FGYDPLFLPN DKAAGGKTFA
QIKQELKNQI SHRSRSLAKL EDFLRS
//
