2GZK

Structure of a complex of tandem HMG boxes and DNA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a Complex of Tandem HMG Boxes and DNA.

Stott, K.Tang, G.S.Lee, K.B.Thomas, J.O.

(2006) J.Mol.Biol. 360: 90-104

  • DOI: 10.1016/j.jmb.2006.04.059

  • PubMed Abstract: 
  • The high-mobility group protein HMGB1 contains two tandem DNA-binding HMG box domains, A and B, linked by a short flexible linker that allows the two domains to behave independently in the free protein. There is no structural information on how the l ...

    The high-mobility group protein HMGB1 contains two tandem DNA-binding HMG box domains, A and B, linked by a short flexible linker that allows the two domains to behave independently in the free protein. There is no structural information on how the linked domains and linker behave when bound to DNA, mainly due to the lack of any DNA-sequence preference of HMGB1. We report the structure determination, by NMR spectroscopy, of a well-defined complex of two tandem HMG boxes bound to a 16 bp oligonucleotide. The protein is an engineered version of the AB di-domain of HMGB1, in which the A box has been replaced by the HMG box of the sequence-specific transcription factor SRY, to give SRY.B. In the SRY.B/DNA complex, both HMG boxes bind in the minor groove and contribute to the overall DNA bending by intercalation of bulky hydrophobic residues between base-pairs; the bends reinforce each other, and the basic linker lies partly in the minor groove. As well as being the first structure of an HMG-box di-domain bound to DNA, this provides the first structure of the B domain of HMGB1 bound to DNA.


    Organizational Affiliation

    Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Sex-determining region on Y / HMGB1
A
159Homo sapiensRattus norvegicus
This entity is chimeric
Mutation(s): 0 
Gene Names: SRY (TDF), Hmgb1 (Hmg-1, Hmg1)
Find proteins for Q05066 (Homo sapiens)
Go to Gene View: SRY
Go to UniProtKB:  Q05066
Find proteins for P63159 (Rattus norvegicus)
Go to UniProtKB:  P63159
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*GP*GP*GP*AP*TP*CP*TP*AP*AP*AP*CP*AP*AP*TP*GP*C)-3'B16N/A
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*GP*CP*AP*TP*TP*GP*TP*TP*TP*AP*GP*AP*TP*CP*CP*C)-3'C16N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-07-25
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance