2B3X	Lyase	date	Sep 22, 2005
title	Structure Of An Orthorhombic Crystal Form Of Human Cytosolic (Irp1)
authors	J.Dupuy, J.C.Fontecilla-Camps, A.Volbeda
compound		source
Molecule: Iron-Responsive Element Binding Protein 1 Chain: A Synonym: Ire-Bp 1, Iron Regulatory Protein 1, Irp1, Ferriti Repressor Protein, Aconitate Hydratase, Citrate Hydro-Lyase Aconitase; Ec: 4.2.1.3 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: K38pgp1-2 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pt7-7
symmetry	Space Group: C 2 2 21	R_factor 0.180 R_Free 0.225
crystal cell	length a length b length c angle alpha angle beta angle gamma 75.352 103.307 225.957 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.54 Å
ligand	EDO, SF4, ZN	enzyme	Lyase E.C.4.2.1.3 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of human iron regulatory protein 1 as cytosolic aconitase., Dupuy J, Volbeda A, Carpentier P, Darnault C, Moulis JM, Fontecilla-Camps JC, Structure. 2006 Jan;14(1):129-39. PMID:16407072

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (146 Kb) [Save to disk] Biological Unit Coordinates (2b3x.pdb1.gz) 140 Kb LPC: Ligand-Protein Contacts for 2B3X CSU: Contacts of Structural Units for 2B3X Likely Quarternary Molecular Structure file(s) for 2B3X Structure Factors (239 Kb) Retrieve 2B3X in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2B3X from S2C, [Save to disk] Re-refined 2b3x structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2B3X 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 2B3X

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 2B3X, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2b3x_A] [2b3x] SWISS-PROT database: [P21399] Domain organization of [ACOC_HUMAN] by SWISSPFAM

Other resources with information on 2B3X

Community annotation for 2B3X at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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