Biological Assembly 1  

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 47513.85 
• Atom Count: 3122 
• Residue Count: 288 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

2NP2

Hbb-DNA complex

• DOI: 10.2210/pdb2NP2/pdb
• NDB: PD0903

• Classification: DNA BINDING PROTEIN/DNA
• Organism(s): Borrelia burgdorferi (strain ATCC 35210 / B31 / CIP 102532 / DSM 4680)
• Expression System: Escherichia coli


• Deposited: 2006-10-26 Released: 2007-02-27 
• Deposition Author(s): Rice, P.A., Mouw, K.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.02 Å
• R-Value Free: 0.276 
• R-Value Work: 0.235 

Literature

Shaping the Borrelia burgdorferi genome: crystal structure and binding properties of the DNA-bending protein Hbb.

Mouw, K.W., Rice, P.A.

(2007) Mol.Microbiol. 63: 1319-1330

• PubMed: 17244195 
• DOI: 10.1111/j.1365-2958.2007.05586.x


• PubMed Abstract: 
  

The genome of the Lyme disease-causing spirochete Borrelia burgdorferi encodes only a single polypeptide from the integration host factor (IHF)/HU or 'DNABII' family of nucleoid-associated proteins - Hbb. DNABII proteins induce large bends in DNA and serve as architectural factors in a variety of prokaryotic cellular processes. We have solved the crystal structure of an Hbb-DNA complex in which the DNA is bent by over 180 degrees . We find that like IHF, Hbb relies exclusively on indirect readout to recognize its cognate site. Additional binding studies show that the sequence preferences of Hbb are related to, yet distinct from those of IHF. Defining these binding characteristics may help to uncover additional roles for Hbb in Borrelia DNA metabolism as well as further our understanding of the mechanism of indirect readout.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, IL, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Hbb	A, B	108	Borrelia burgdorferi (strain ATCC 35210 / B31 / CIP 102532 / DSM 4680)	Mutation(s): 0  Gene Names: hup (hbb)
Find proteins for Q57267 (Borrelia burgdorferi (strain ATCC 35210 / B31 / CIP 102532 / DSM 4680)) Go to UniProtKB:  Q57267

Entity ID: 1
Molecule	Chains	Length	Organism
36-MER	C,D	36	N/A

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.02 Å
• R-Value Free: 0.276 
• R-Value Work: 0.235 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 59.270	α = 90.00
b = 88.320	β = 90.00
c = 96.570	γ = 90.00

Software Package:

Software Name	Purpose
PDB_EXTRACT	data extraction
HKL-2000	data scaling
ADSC	data collection
CNS	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-10-26 
• Released Date: 2007-02-27 
• Deposition Author(s): Rice, P.A., Mouw, K.W.

Revision History 

• Version 1.0: 2007-02-27
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance