1RR6	Transferase	date	Dec 08, 2003
title	Structure Of Human Purine Nucleoside Phosphorylase In Comple Immucillin-H And Phosphate
authors	W.Shi, A.Lewandowicz, P.C.Tyler, R.H.Furneaux, S.C.Almo, V.L.Schr
compound		source
Molecule: Purine Nucleoside Phosphorylase Chain: A Synonym: Inosine Phosphorylase, Pnp Ec: 2.4.2.1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Np, Pnp Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: H 3 2	R_factor 0.243 R_Free 0.284
crystal cell	length a length b length c angle alpha angle beta angle gamma 142.351 142.351 167.665 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	IMH, PO4 BindingDB	enzyme	Transferase E.C.2.4.2.1 BRENDA
related structures	by homologous chain: 1A9P, 1PF7
Gene Ontology	Chain Function Process Component A nucleoside binding purine nucleobase binding purine-nucleoside phosphoryl... drug binding transferase activity transferase activity, transf... phosphate ion binding nucleobase-containing compou... purine nucleobase metabolic ... inosine catabolic process purine nucleotide catabolic ... nicotinamide riboside catabo... immune response NAD biosynthesis via nicotin... urate biosynthetic process positive regulation of T cel... response to drug purine-containing compound s... small molecule metabolic pro... positive regulation of alpha... nucleobase-containing small ... interleukin-2 secretion intracellular cytoplasm cytosol cytoskeleton
Primary reference	Plasmodium falciparum purine nucleoside phosphorylase: crystal structures, immucillin inhibitors, and dual catalytic function., Shi W, Ting LM, Kicska GA, Lewandowicz A, Tyler PC, Evans GB, Furneaux RH, Kim K, Almo SC, Schramm VL, J Biol Chem. 2004 Apr 30;279(18):18103-6. Epub 2004 Feb 23. PMID:14982926

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (51 Kb) [Save to disk] Biological Unit Coordinates (1rr6.pdb1.gz) 137 Kb LPC: Ligand-Protein Contacts for 1RR6 CSU: Contacts of Structural Units for 1RR6 Likely Quarternary Molecular Structure file(s) for 1RR6 Structure Factors (139 Kb) Retrieve 1RR6 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1RR6 from S2C, [Save to disk] Re-refined 1rr6 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1RR6 in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 1RR6

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Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1RR6, from MSDmotif at EBI Fold representative 1rr6 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1rr6_A] SWISS-PROT database: [P00491] Domain organization of [PNPH_HUMAN] by SWISSPFAM Alignments of the sequence of 1RR6 with the sequences similar proteins can be viewed for 1RR6's classification [PNPH_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [PNPH_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1RR6

Community annotation for 1RR6 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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