2IU3	Hydrolase	date	May 27, 2006
title	Crystal Structures Of Transition State Analogue Inhibitors O Monophosphate Cyclohydrolase
authors	L.Xu, Y.Chong, I.Hwang, A.D'Onofrio, K.Amore, G.P.Beardsley, C.Li, A.J.Olson, D.L.Boger, I.A.Wilson
compound		source
Molecule: Bifunctional Purine Biosynthesis Protein Purh Chain: A, B Synonym: Aminoimidazole Carboxamide Ribonucleotide Transfor Imp Cyclohydrolase, Atic, Inosinicase, Imp Aicar Transformy Cyclohydrolase, Imp Synthetase; Ec: 2.1.2.3, 3.5.4.10 Engineered: Yes Other_details: Bifunctional Enzyme		Organism_scientific: Gallus Gallus Organism_common: Chicken Organism_taxid: 9031 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_vector: Pet Expression_system_plasmid: Pet28a
symmetry	Space Group: C 1 2 1	R_factor 0.215 R_Free 0.300
crystal cell	length a length b length c angle alpha angle beta angle gamma 387.000 57.000 62.100 90.00 98.90 90.00
method	X-Ray Diffraction	resolution	2.90 Å
ligand	203, K	enzyme	Transferase E.C.2.1.2.3 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structure-based design, synthesis, evaluation, and crystal structures of transition state analogue inhibitors of inosine monophosphate cyclohydrolase., Xu L, Chong Y, Hwang I, D'Onofrio A, Amore K, Beardsley GP, Li C, Olson AJ, Boger DL, Wilson IA, J Biol Chem. 2007 Apr 27;282(17):13033-46. Epub 2007 Feb 26. PMID:17324932

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (186 Kb) [Save to disk] Biological Unit Coordinates (2iu3.pdb1.gz) 180 Kb LPC: Ligand-Protein Contacts for 2IU3 CSU: Contacts of Structural Units for 2IU3 Likely Quarternary Molecular Structure file(s) for 2IU3 Structure Factors (611 Kb) Retrieve 2IU3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2IU3 from S2C, [Save to disk] Re-refined 2iu3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2IU3 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 2IU3

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2IU3, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2iu3_B] [2iu3] [2iu3_A] SWISS-PROT database: [P31335] Domain organization of [PUR9_CHICK] by SWISSPFAM Domains found in 2IU3: [AICARFT_IMPCHas] [MGS ] by SMART

Other resources with information on 2IU3

Community annotation for 2IU3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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