2QRA	Apoptosis, Signaling Protein	date	Jul 27, 2007
title	Crystal Structure Of Xiap Bir1 Domain (P21 Form)
authors	S.C.Lin
compound		source
Molecule: Baculoviral Iap Repeat-Containing Protein 4 Chain: D, C, B, A Fragment: Bir1 Domain Synonym: X-Linked Inhibitor Of Apoptosis; Xiap; Inhibitor O Apoptosis Protein 3; X-Linked Iap; Iap-Like Protein; Hilp; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Birc4, Api3, Iap3, Xiap Expression_system: Escherichia Coli K12 Expression_system_taxid: 83333 Expression_system_strain: K-12 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-28
symmetry	Space Group: P 1 21 1	R_factor 0.196 R_Free 0.253
crystal cell	length a length b length c angle alpha angle beta angle gamma 36.563 72.983 68.904 90.00 95.69 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	EOH, ZN	enzyme
Primary reference	Crystal Structure of the BIR1 Domain of XIAP in Two Crystal Forms., Lin SC, Huang Y, Lo YC, Lu M, Wu H, J Mol Biol. 2007 Sep 28;372(4):847-54. Epub 2007 Jul 21. PMID:17698078

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (59 Kb) [Save to disk] Biological Unit Coordinates (2qra.pdb1.gz) 27 Kb Biological Unit Coordinates (2qra.pdb2.gz) 27 Kb LPC: Ligand-Protein Contacts for 2QRA CSU: Contacts of Structural Units for 2QRA Likely Quarternary Molecular Structure file(s) for 2QRA Structure Factors (207 Kb) Retrieve 2QRA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2QRA from S2C, [Save to disk] Re-refined 2qra structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2QRA 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 2QRA

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 2QRA, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2qra_A] [2qra_C] [2qra_B] [2qra_D] [2qra] SWISS-PROT database: [P98170] Domain organization of [XIAP_HUMAN] by SWISSPFAM Domain found in 2QRA: [BIR ] by SMART

Other resources with information on 2QRA

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

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