3GB9	Transferase	date	Feb 19, 2009
title	Human Purine Nucleoside Phosphorylase Double Mutant E201q,N2 Complexed With 2-Fluoroadenine
authors	M.R.Sawaya, S.Afshar
compound		source
Molecule: Purine Nucleoside Phosphorylase Chain: A, B, C Synonym: Pnp, Inosine Phosphorylase Ec: 2.4.2.1 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Np, Pnp Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet16b
symmetry	Space Group: P 21 21 21	R_factor 0.184 R_Free 0.227
crystal cell	length a length b length c angle alpha angle beta angle gamma 71.791 130.648 149.177 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	A2F, GOL, SO4	enzyme	Transferase E.C.2.4.2.1 BRENDA
Gene Ontology	Chain Function Process Component A, C, B
Primary reference	Structure of a mutant human purine nucleoside phosphorylase with the prodrug, 2-fluoro-2'-deoxyadenosine and the cytotoxic drug, 2-fluoroadenine., Afshar S, Sawaya MR, Morrison SL, Protein Sci. 2009 May;18(5):1107-14. PMID:19388075

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (144 Kb) [Save to disk] Biological Unit Coordinates (3gb9.pdb1.gz) 137 Kb LPC: Ligand-Protein Contacts for 3GB9 CSU: Contacts of Structural Units for 3GB9 Likely Quarternary Molecular Structure file(s) for 3GB9 Structure Factors (765 Kb) Retrieve 3GB9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3GB9 from S2C, [Save to disk] Re-refined 3gb9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3GB9 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.

Visual 3D analysis of 3GB9

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 3GB9, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3gb9_C] [3gb9] [3gb9_A] [3gb9_B] SWISS-PROT database: [P00491] Domain organization of [PNPH_HUMAN] by SWISSPFAM

Other resources with information on 3GB9

Community annotation for 3GB9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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