2ARC	Transcription Factor	date	Oct 29, 1996
title	Escherichia Coli Regulatory Protein Arac Complexed With L-Ar
authors	S.M.Soisson, C.Wolberger
compound		source
Molecule: Arabinose Operon Regulatory Protein Chain: A, B Fragment: Sugar-Bindingdimerization Domain Synonym: Arac Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 1 21 1	R_factor 0.179 R_Free 0.232
crystal cell	length a length b length c angle alpha angle beta angle gamma 39.750 93.840 50.330 90.00 95.62 90.00
method	X-Ray Diffraction	resolution	1.50 Å
ligand	ARA	enzyme
note	2ARC is a representative structure
related structures	by homologous chain: 2AAC
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structural basis for ligand-regulated oligomerization of AraC., Soisson SM, MacDougall-Shackleton B, Schleif R, Wolberger C, Science 1997 Apr 18;276(5311):421-5. PMID:9103202

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (66 Kb) [Save to disk] Biological Unit Coordinates (2arc.pdb1.gz) 62 Kb LPC: Ligand-Protein Contacts for 2ARC CSU: Contacts of Structural Units for 2ARC Likely Quarternary Molecular Structure file(s) for 2ARC Structure Factors (423 Kb) Retrieve 2ARC in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2ARC from S2C, [Save to disk] Re-refined 2arc structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2ARC 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 2ARC

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 2ARC 2ARCA 2ARCB from the CEP Server. Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2ARC, from MSDmotif at EBI Genome occurence of 2ARC's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2arca_, region A [Jmol] [rasmolscript] [script source]     - Domain d2arcb_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2arc_A] [2arc_B] [2arc] SWISS-PROT database: [P0A9E0] Domain organization of [ARAC_ECOLI] by SWISSPFAM

Other resources with information on 2ARC

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

Movements, Movies and Images

Images from IMB Jena Image Library of Biological Macromolecules.

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