1jfi

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spinqualitylabelsall models PDB ID 1jfi Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image
, resolution 2.62Å
Ligands:	, , ,
Gene:	NC2 alpha (DRAP1) (Homo sapiens), NC2 beta (Dr1) (Homo sapiens), tbp (Homo sapiens)
Domains:	COG5150, BUR6, TBP_eukaryotes, SPT15
Resources:	FirstGlance, OCA, PDBsum, RCSB
Coordinates:	save as pdb, mmCIF, xml

Crystal Structure of the NC2-TBP-DNA Ternary Complex

Overview

The X-ray structure of a ternary complex of Negative Cofactor 2 (NC2), the TATA box binding protein (TBP), and DNA has been determined at 2.6 A resolution. The N termini of NC2 alpha and beta resemble histones H2A and H2B, respectively, and form a heterodimer that binds to the bent DNA double helix on the underside of the preformed TBP-DNA complex via electrostatic interactions. NC2beta contributes to inhibition of TATA-dependent transcription through interactions of its C-terminal alpha helix with a conserved hydrophobic feature on the upper surface of TBP, which in turn positions the penultimate alpha helix of NC2beta to block recognition of the TBP-DNA complex by transcription factor IIB. Further regulatory implications of the NC2 heterodimer structure are discussed.

About this Structure

1JFI is a Protein complex structure of sequences from Homo sapiens. The following page contains interesting information on the relation of 1JFI with [TATA-Binding Protein]. Full crystallographic information is available from OCA.

Reference

Crystal structure of negative cofactor 2 recognizing the TBP-DNA transcription complex., Kamada K, Shu F, Chen H, Malik S, Stelzer G, Roeder RG, Meisterernst M, Burley SK, Cell. 2001 Jul 13;106(1):71-81. PMID:11461703

Page seeded by OCA on Sun Mar 30 21:32:57 2008