PURNU_STRGR
ID PURNU_STRGR Reviewed; 246 AA.
AC P45496;
DT 01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1995, sequence version 1.
DT 03-AUG-2022, entry version 70.
DE RecName: Full=Purine nucleoside phosphorylase ORF3;
DE EC=2.4.2.1 {ECO:0000250|UniProtKB:P84138};
DE AltName: Full=Adenosine deaminase ORF3;
DE EC=3.5.4.4 {ECO:0000250|UniProtKB:P84138};
DE AltName: Full=ORF3 {ECO:0000303|PubMed:8088545};
DE AltName: Full=S-methyl-5'-thioadenosine phosphorylase ORF3;
DE EC=2.4.2.28 {ECO:0000250|UniProtKB:P84138};
OS Streptomyces griseus.
OC Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC Streptomyces.
OX NCBI_TaxID=1911;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=ATCC 23345 / DSM 40236 / JCM 4644 / NBRC 12875 / NCIMB 13023 / NRRL
RC B-2682 / VKM Ac-800 / IMRU 3463;
RX PubMed=8088545; DOI=10.1016/0378-1119(94)90034-5;
RA Dharmatilake A.J., Kendrick K.E.;
RT "Expression of the division-controlling gene ftsZ during growth and
RT sporulation of the filamentous bacterium Streptomyces griseus.";
RL Gene 147:21-28(1994).
CC -!- FUNCTION: Purine nucleoside enzyme that catalyzes the phosphorolysis of
CC adenosine and inosine nucleosides, yielding D-ribose 1-phosphate and
CC the respective free bases, adenine and hypoxanthine. Also catalyzes the
CC phosphorolysis of S-methyl-5'-thioadenosine into adenine and S-methyl-
CC 5-thio-alpha-D-ribose 1-phosphate. Also has adenosine deaminase
CC activity. {ECO:0000250|UniProtKB:P84138}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=adenosine + phosphate = adenine + alpha-D-ribose 1-phosphate;
CC Xref=Rhea:RHEA:27642, ChEBI:CHEBI:16335, ChEBI:CHEBI:16708,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:57720; EC=2.4.2.1;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:27643;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=phosphate + S-methyl-5'-thioadenosine = adenine + S-methyl-5-
CC thio-alpha-D-ribose 1-phosphate; Xref=Rhea:RHEA:11852,
CC ChEBI:CHEBI:16708, ChEBI:CHEBI:17509, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58533; EC=2.4.2.28;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:11853;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=inosine + phosphate = alpha-D-ribose 1-phosphate +
CC hypoxanthine; Xref=Rhea:RHEA:27646, ChEBI:CHEBI:17368,
CC ChEBI:CHEBI:17596, ChEBI:CHEBI:43474, ChEBI:CHEBI:57720; EC=2.4.2.1;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:27647;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=adenosine + H(+) + H2O = inosine + NH4(+);
CC Xref=Rhea:RHEA:24408, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16335, ChEBI:CHEBI:17596, ChEBI:CHEBI:28938; EC=3.5.4.4;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:24409;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC -!- COFACTOR:
CC Name=Cu(2+); Xref=ChEBI:CHEBI:29036;
CC Evidence={ECO:0000250|UniProtKB:P33644};
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000250|UniProtKB:P84138};
CC -!- SUBUNIT: Homodimer. {ECO:0000250|UniProtKB:Q1EIR0}.
CC -!- SIMILARITY: Belongs to the purine nucleoside phosphorylase YfiH/LACC1
CC family. {ECO:0000305}.
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DR EMBL; U07344; AAA56890.1; -; Genomic_DNA.
DR RefSeq; WP_012381305.1; NZ_UAVD01000032.1.
DR AlphaFoldDB; P45496; -.
DR SMR; P45496; -.
DR GeneID; 6209966; -.
DR OMA; CFADCVP; -.
DR GO; GO:0004000; F:adenosine deaminase activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-KW.
DR GO; GO:0017061; F:S-methyl-5-thioadenosine phosphorylase activity; IEA:UniProtKB-EC.
DR CDD; cd16833; YfiH; 1.
DR Gene3D; 3.60.140.10; -; 1.
DR InterPro; IPR003730; Cu_polyphenol_OxRdtase.
DR InterPro; IPR038371; Cu_polyphenol_OxRdtase_sf.
DR InterPro; IPR011324; Cytotoxic_necrot_fac-like_cat.
DR PANTHER; PTHR30616; PTHR30616; 1.
DR Pfam; PF02578; Cu-oxidase_4; 1.
DR SUPFAM; SSF64438; SSF64438; 1.
DR TIGRFAMs; TIGR00726; TIGR00726; 1.
PE 3: Inferred from homology;
KW Copper; Hydrolase; Metal-binding; Oxidoreductase; Transferase; Zinc.
FT CHAIN 1..246
FT /note="Purine nucleoside phosphorylase ORF3"
FT /id="PRO_0000163183"
FT BINDING 71
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000250|UniProtKB:P84138"
FT BINDING 110
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000250|UniProtKB:P84138"
FT BINDING 127
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000250|UniProtKB:P84138"
SQ SEQUENCE 246 AA; 25269 MW; B4C3FFEBA39906C1 CRC64;
MIVQHRTAPV TGSAHFAFTD RWGGVSAAPY GELNLGGAVG DDPAAVGANR ERAARHLGLD
PAHVVWMNQV HGRDVAVVDG PWGADAEIPA VDAVVTARRG LALAVLTADC TPVLLADPVA
GVVGAAHAGR PGLVAGVVSA AVEAMVALGA HPSRITAHTG PAVCGRCYEV PEEMRAEVAG
AVPGTWSETS WGTPAVDVTG GVHAQLAALG VTDRHASPFC TLESGDHFSY RRDRTTGRLA
GYVWLD
