2BTU	Synthase	date	Jun 07, 2005
title	Crystal Structure Of Phosphoribosylformylglycinamidine Cyclo From Bacillus Anthracis At 2.3a Resolution.
authors	O.V.Moroz, E.V.Blagova, V.M.Levdikov, M.J.Fogg, A.A.Lebedev, J.A.Brannigan, A.J.Wilkinson, K.S.Wilson
compound		source
Molecule: Phosphoribosyl-Aminoimidazole Synthetase Chain: A, B Synonym: Phosphoribosylformylglycinamidine Cyclo-Ligase Air Phosphoribosyl-Aminoimidazole Synthetase, Air Synthase; Ec: 6.3.3.1 Engineered: Yes		Organism_scientific: Bacillus Anthracis Organism_taxid: 1392 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-Ysblic
symmetry	Space Group: P 41	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 89.490 89.490 88.117 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.31 Å
ligand		enzyme	Ligase E.C.6.3.3.1 BRENDA
Gene Ontology	Chain Function Process Component A, B

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (97 Kb) [Save to disk] Biological Unit Coordinates (2btu.pdb1.gz) 92 Kb CSU: Contacts of Structural Units for 2BTU Likely Quarternary Molecular Structure file(s) for 2BTU Structure Factors (266 Kb) Retrieve 2BTU in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2BTU from S2C, [Save to disk] Re-refined 2btu structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2BTU 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 2BTU

Ramachandran plot from PDBSum

Structure-derived information

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

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2btu_B] [2btu_A] [2btu] SWISS-PROT database: [Q81ZH0] Domain organization of [PUR5_BACAN] by SWISSPFAM

Other resources with information on 2BTU

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

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