1FXU

PURINE NUCLEOSIDE PHOSPHORYLASE FROM CALF SPLEEN IN COMPLEX WITH N(7)-ACYCLOGUANOSINE INHIBITOR AND A PHOSPHATE ION

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0003824	molecular_function	catalytic activity
A	0004731	molecular_function	purine-nucleoside phosphorylase activity
A	0005737	cellular_component	cytoplasm
A	0005829	cellular_component	cytosol
A	0006139	biological_process	nucleobase-containing compound metabolic process
A	0006166	biological_process	purine ribonucleoside salvage
A	0009116	biological_process	nucleoside metabolic process
A	0016740	molecular_function	transferase activity
A	0016757	molecular_function	glycosyltransferase activity
A	0016763	molecular_function	pentosyltransferase activity
A	0047975	molecular_function	guanosine phosphorylase activity

Functional Information from PDB Data

site_id	AC1
Number of Residues	6
Details	BINDING SITE FOR RESIDUE MG A 301

Chain	Residue
A	HOH323
A	HOH326
A	HOH327
A	HOH328
A	HOH329
A	HOH330

---

site_id	AC2
Number of Residues	6
Details	BINDING SITE FOR RESIDUE ZN A 302

Chain	Residue
A	HOH372
A	HOH372
A	HOH372
A	HIS20
A	HIS20
A	HIS20

---

site_id	AC3
Number of Residues	12
Details	BINDING SITE FOR RESIDUE PO4 A 291

Chain	Residue
A	GLY32
A	SER33
A	HIS64
A	ARG84
A	HIS86
A	ASN115
A	ALA116
A	SER220
A	GU7290
A	HOH387
A	HOH388
A	HOH399

---

site_id	AC4
Number of Residues	17
Details	BINDING SITE FOR RESIDUE GU7 A 290

Chain	Residue
A	SER33
A	HIS86
A	TYR88
A	ALA116
A	ALA117
A	GLY118
A	PHE159
A	PHE200
A	GLU201
A	MET219
A	THR242
A	ASN243
A	VAL245
A	HIS257
A	VAL260
A	PO4291
A	HOH388

---

Functional Information from PROSITE/UniProt

site_id	PS01240
Number of Residues	42
Details	PNP_MTAP_2 Purine and other phosphorylases family 2 signature. VmmqGrfHmYegypFwkvTfpVrVfrllGvet.LVvtNAaGGL

Chain	Residue	Details
A	VAL79-LEU120

---

Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	1
Details	Binding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9S","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3PNP","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4PNP","evidenceCode":"ECO:0007744"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI2
Number of Residues	1
Details	Binding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3PNP","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4PNP","evidenceCode":"ECO:0007744"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI3
Number of Residues	4
Details	Binding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9Q","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9R","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9S","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3PNP","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4PNP","evidenceCode":"ECO:0007744"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI4
Number of Residues	3
Details	Binding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9S","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI5
Number of Residues	2
Details	Binding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"9020983","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9Q","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9R","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1VFN","evidenceCode":"ECO:0007744"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI6
Number of Residues	1
Details	Site: {"description":"Important for substrate specificity","evidences":[{"source":"UniProtKB","id":"P00491","evidenceCode":"ECO:0000250"}]}

Chain

Residue

Details

---

Catalytic Information from CSA

site_id	CSA1
Number of Residues	3
Details	Annotated By Reference To The Literature 1cg6

Chain	Residue	Details
A	ASN243
A	HIS86
A	GLU89

---

site_id	CSA2
Number of Residues	2
Details	Annotated By Reference To The Literature 1cg6

Chain	Residue	Details
A	ASN243
A	ASP248

---