2EWN	Ligase, Transcription	date	Nov 04, 2005
title	Ecoli Biotin Repressor With Co-Repressor Analog
authors	Z.A.Wood, L.H.Weaver, B.W.Matthews
compound		source
Molecule: Bira Bifunctional Protein Chain: A, B Synonym: Biotin Operon Repressor, Biotin--[Acetyl-Coa-Carbo Synthetase, Biotin--Protein Ligase; Ec: 6.3.4.15 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Bira, Bior, Dhbb Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Jm101 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pbtac
symmetry	Space Group: P 43 21 2	R_factor 0.213 R_Free 0.264
crystal cell	length a length b length c angle alpha angle beta angle gamma 152.188 152.188 93.189 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand	BTX BindingDB	enzyme	Ligase E.C.6.3.4.15 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Co-repressor Induced Order and Biotin Repressor Dimerization: A Case for Divergent Followed by Convergent Evolution., Wood ZA, Weaver LH, Brown PH, Beckett D, Matthews BW, J Mol Biol. 2006 Jan 6;. PMID:16438984

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (107 Kb) [Save to disk] Biological Unit Coordinates (2ewn.pdb1.gz) 102 Kb LPC: Ligand-Protein Contacts for 2EWN CSU: Contacts of Structural Units for 2EWN Likely Quarternary Molecular Structure file(s) for 2EWN Structure Factors (391 Kb) Retrieve 2EWN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2EWN from S2C, [Save to disk] Re-refined 2ewn structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2EWN 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 2EWN

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 2EWN, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ewn] [2ewn_A] [2ewn_B] SWISS-PROT database: [P06709] Domain organization of [BIRA_ECOLI] by SWISSPFAM

Other resources with information on 2EWN

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

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Images from IMB Jena Image Library of Biological Macromolecules.

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