Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1brwa1 All alpha proteins Methionine synthase domain-like Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain Pyrimidine nucleoside phosphorylase (Geobacillus stearothermophilus ) [TaxId: 1422 ], SCOPe (2.08)
Ad1brwa2 Alpha and beta proteins (a/b) Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain Pyrimidine nucleoside phosphorylase (Geobacillus stearothermophilus ) [TaxId: 1422 ], SCOPe (2.08)
Ad1brwa3 Alpha and beta proteins (a+b) alpha/beta-Hammerhead Pyrimidine nucleoside phosphorylase C-terminal domain Pyrimidine nucleoside phosphorylase C-terminal domain Pyrimidine nucleoside phosphorylase (Geobacillus stearothermophilus ) [TaxId: 1422 ], SCOPe (2.08)
Bd1brwb1 All alpha proteins Methionine synthase domain-like Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain Pyrimidine nucleoside phosphorylase (Geobacillus stearothermophilus ) [TaxId: 1422 ], SCOPe (2.08)
Bd1brwb2 Alpha and beta proteins (a/b) Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain Pyrimidine nucleoside phosphorylase (Geobacillus stearothermophilus ) [TaxId: 1422 ], SCOPe (2.08)
Bd1brwb3 Alpha and beta proteins (a+b) alpha/beta-Hammerhead Pyrimidine nucleoside phosphorylase C-terminal domain Pyrimidine nucleoside phosphorylase C-terminal domain Pyrimidine nucleoside phosphorylase (Geobacillus stearothermophilus ) [TaxId: 1422 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyPyrimidine nucleoside phosphorylase C-terminal domain 8022641 4001133 SCOP2 (2022-06-29)
ASCOP2 FamilyNucleoside phosphorylase/phosphoribosyltransferase N-terminal domain 8025194 4000984 SCOP2 (2022-06-29)
ASCOP2 FamilyNucleoside phosphorylase/phosphoribosyltransferase catalytic domain 8031834 4003843 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyPyrimidine nucleoside phosphorylase C-terminal domain 8035021 3000876 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyNucleoside phosphorylase/phosphoribosyltransferase N-terminal domain 8037573 3000348 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyNucleoside phosphorylase/phosphoribosyltransferase catalytic domain 8044212 3001630 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyNucleoside phosphorylase/phosphoribosyltransferase N-terminal domain 8037573 3000348 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyPyrimidine nucleoside phosphorylase C-terminal domain 8035021 3000876 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyNucleoside phosphorylase/phosphoribosyltransferase catalytic domain 8044212 3001630 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AGlycos_trans_3Ne1brwA1 A: alpha arraysX: Nucleoside phosphorylase/phosphoribosyltransferase-N (From Topology)H: Nucleoside phosphorylase/phosphoribosyltransferase-N (From Topology)T: Nucleoside phosphorylase/phosphoribosyltransferase-NF: Glycos_trans_3NECOD (1.6)
APYNP_Ce1brwA2 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Pyrimidine nucleoside phosphorylase C-terminal domainF: PYNP_CECOD (1.6)
AGlycos_transf_3e1brwA3 A: a/b three-layered sandwichesX: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain (From Topology)H: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain (From Topology)T: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domainF: Glycos_transf_3ECOD (1.6)
BGlycos_trans_3Ne1brwB1 A: alpha arraysX: Nucleoside phosphorylase/phosphoribosyltransferase-N (From Topology)H: Nucleoside phosphorylase/phosphoribosyltransferase-N (From Topology)T: Nucleoside phosphorylase/phosphoribosyltransferase-NF: Glycos_trans_3NECOD (1.6)
BPYNP_Ce1brwB2 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Pyrimidine nucleoside phosphorylase C-terminal domainF: PYNP_CECOD (1.6)
BGlycos_transf_3e1brwB3 A: a/b three-layered sandwichesX: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain (From Topology)H: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain (From Topology)T: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domainF: Glycos_transf_3ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF00591Glycosyl transferase family, a/b domain (Glycos_transf_3)Glycosyl transferase family, a/b domain- Family
A, B
PF02885Glycosyl transferase family, helical bundle domain (Glycos_trans_3N)Glycosyl transferase family, helical bundle domainThis family includes anthranilate phosphoribosyltransferase (TrpD), thymidine phosphorylase. All these proteins can transfer a phosphorylated ribose substrate.Domain
A, B
PF07831Pyrimidine nucleoside phosphorylase C-terminal domain (PYNP_C)Pyrimidine nucleoside phosphorylase C-terminal domainThis domain is found at the C-terminal end of the large alpha/beta domain making up various pyrimidine nucleoside phosphorylases [1,2]. It has slightly different conformations in different members of this family. For example, in pyrimidine nucleoside ...This domain is found at the C-terminal end of the large alpha/beta domain making up various pyrimidine nucleoside phosphorylases [1,2]. It has slightly different conformations in different members of this family. For example, in pyrimidine nucleoside phosphorylase (PYNP, Swiss:P77826) there is an added three-stranded anti-parallel beta sheet as compared to other members of the family, such as E. coli thymidine phosphorylase (TP, Swiss:P07650) [1]. The domain contains an alpha/ beta hammerhead fold and residues in this domain seem to be important in formation of the homodimer [1].
Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
pyrimidine-nucleoside phosphorylase  M-CSA #91

Pyrimidine-nucleoside phosphorylase (Py-NP) catalyses the reversible phosphorylation of both uridine and thymidine in the nucleotide synthesis salvage pathway. It is found in all lower organisms whilst in higher organisms such phosphorylases are specific to those individual nucleosides. Nevertheless, Py-NPs share 40% sequence similarity with thymidine specific phosphorylase seen in higher organisms, a prominent drug target in treating breast cancer.

Defined by 5 residues: HIS:A-82ASP:A-161ARG:A-168SER:A-183LYS:A-187
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