2NP2

Hbb-DNA complex

Experimental Data Snapshot

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

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This is version 1.2 of the entry. See complete history. 


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

  • DOI: 10.1111/j.1365-2958.2007.05586.x
  • Primary Citation of Related Structures:  
    2NP2

  • 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 ...

    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.

    Organizational Affiliation: 

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



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HbbC [auth A],
D [auth B]		108Borreliella burgdorferiMutation(s): 0 
Gene Names: hbb
UniProt
Find proteins for Q57267 (Borreliella burgdorferi (strain ATCC 35210 / DSM 4680 / CIP 102532 / B31))
Explore Q57267 
Go to UniProtKB:  Q57267
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ57267
Protein Feature View
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  • Reference Sequence
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Entity ID: 1
MoleculeChainsLengthOrganismImage
36-MERA [auth C],
B [auth D]		36N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.02 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.235 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.27α = 90
b = 88.32β = 90
c = 96.57γ = 90
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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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  (Full details and data files)

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