1R2B	Transcription	date	Sep 26, 2003
title	Crystal Structure Of The Bcl6 Btb Domain Complexed With A Sm Repressor Peptide
authors	K.F.Ahmad, A.Melnick, S.A.Lax, D.Bouchard, J.Liu, C.L.Kiang, S.May J.D.Licht, G.G.Prive
compound		source
Molecule: B-Cell Lymphoma 6 Protein Chain: A, B Fragment: Bcl6 (Residues 5-129) Synonym: Bcl-6, Zinc Finger Protein 51, Laz-3 Protein, Poz Btbpoz Domain; Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Bcl6 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Pet-32(A)
Molecule: Nuclear Receptor Co-Repressor 2 Chain: C, D Fragment: Smrt - Bbd (Residues 1414-1430) Synonym: N-Cor2, Silencing Mediator Of Retinoic Acid And Th Hormone Receptor, Smrt, Smrte, Thyroid-, Retinoic-Acid-Rece Associated Co-Repressor, T3 Receptor- Associating Factor, T Repeat Protein 26; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Ncor2 Or Ctg26 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Pet-32(A)
symmetry	Space Group: P 1 21 1	R_factor 0.227 R_Free 0.267
crystal cell	length a length b length c angle alpha angle beta angle gamma 54.228 38.543 76.659 90.00 92.92 90.00
method	X-Ray Diffraction	resolution	2.20 Å
related structures	by homologous chain: 1R28
Primary reference	Mechanism of SMRT corepressor recruitment by the BCL6 BTB domain., Ahmad KF, Melnick A, Lax S, Bouchard D, Liu J, Kiang CL, Mayer S, Takahashi S, Licht JD, Prive GG, Mol Cell. 2003 Dec;12(6):1551-64. PMID:14690607

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (53 Kb) [Save to disk] Biological Unit Coordinates (1r2b.pdb1.gz) 49 Kb CSU: Contacts of Structural Units for 1R2B Likely Quarternary Molecular Structure file(s) for 1R2B Structure Factors (245 Kb) Retrieve 1R2B in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1R2B from S2C, [Save to disk] Re-refined 1r2b structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1R2B 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 1R2B

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 1R2B, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1r2ba_, region A [Jmol] [rasmolscript] [script source]     - Domain d1r2bb_, region B [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1r2b_C] [1r2b_B] [1r2b] [1r2b_A] [1r2b_D] SWISS-PROT database: [P41182] [Q9Y618] Domain organization of [BCL6_HUMAN] [NCOR2_HUMAN] by SWISSPFAM Domain found in 1R2B: [BTB ] by SMART

Other resources with information on 1R2B

Community annotation for 1R2B at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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