2B1I	Transferase, Hydrolase	date	Sep 15, 2005
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 Ec: 3.5.4.10, 2.1.2.3 Engineered: Yes Other_details: Includes: Phosphoribosylaminoimidazolecarbox Formyltransferase (Aicar Transformylase), Imp Cyclohydrolas (Inosinicase, Imp Synthetase, Atic)		Organism_scientific: Gallus Gallus Organism_common: Chicken Organism_taxid: 9031 Gene: Atic, Purh Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28a
symmetry	Space Group: P 1 21 1	R_factor 0.198 R_Free 0.249
crystal cell	length a length b length c angle alpha angle beta angle gamma 56.000 106.500 101.000 90.00 91.50 90.00
method	X-Ray Diffraction	resolution	2.02 Å
ligand	93A, K	enzyme	Hydrolase E.C.3.5.4.10 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] (382 Kb) [Save to disk] Biological Unit Coordinates (2b1i.pdb1.gz) 375 Kb LPC: Ligand-Protein Contacts for 2B1I CSU: Contacts of Structural Units for 2B1I Likely Quarternary Molecular Structure file(s) for 2B1I Structure Factors (1127 Kb) Retrieve 2B1I in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2B1I from S2C, [Save to disk] Re-refined 2b1i structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2B1I 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 2B1I

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 2B1I, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2b1i] [2b1i_B] [2b1i_A] SWISS-PROT database: [P31335] Domain organization of [PUR9_CHICK] by SWISSPFAM Domains found in 2B1I: [AICARFT_IMPCHas] [MGS ] by SMART

Other resources with information on 2B1I

Community annotation for 2B1I at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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