2H4P

Crystal structure of wildtype MENT in the cleaved conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

X-ray crystal structure of MENT: evidence for functional loop-sheet polymers in chromatin condensation.

McGowan, S.Buckle, A.M.Irving, J.A.Ong, P.C.Bashtannyk-Puhalovich, T.A.Kan, W.T.Henderson, K.N.Bulynko, Y.A.Popova, E.Y.Smith, A.I.Bottomley, S.P.Rossjohn, J.Grigoryev, S.A.Pike, R.N.Whisstock, J.C.

(2006) Embo J. 25: 3144-3155

  • DOI: 10.1038/sj.emboj.7601201
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Most serpins are associated with protease inhibition, and their ability to form loop-sheet polymers is linked to conformational disease and the human serpinopathies. Here we describe the structural and functional dissection of how a unique serpin, th ...

    Most serpins are associated with protease inhibition, and their ability to form loop-sheet polymers is linked to conformational disease and the human serpinopathies. Here we describe the structural and functional dissection of how a unique serpin, the non-histone architectural protein, MENT (Myeloid and Erythroid Nuclear Termination stage-specific protein), participates in DNA and chromatin condensation. Our data suggest that MENT contains at least two distinct DNA-binding sites, consistent with its simultaneous binding to the two closely juxtaposed linker DNA segments on a nucleosome. Remarkably, our studies suggest that the reactive centre loop, a region of the MENT molecule essential for chromatin bridging in vivo and in vitro, is able to mediate formation of a loop-sheet oligomer. These data provide mechanistic insight into chromatin compaction by a non-histone architectural protein and suggest how the structural plasticity of serpins has adapted to mediate physiological, rather than pathogenic, loop-sheet linkages.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heterochromatin-associated protein MENT
A
394Gallus gallusMutation(s): 0 
Gene Names: SERPINB10 (MENT)
Find proteins for O73790 (Gallus gallus)
Go to Gene View: SERPINB10
Go to UniProtKB:  O73790
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Heterochromatin-associated protein MENT
B
34Gallus gallusMutation(s): 0 
Gene Names: SERPINB10 (MENT)
Find proteins for O73790 (Gallus gallus)
Go to Gene View: SERPINB10
Go to UniProtKB:  O73790
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.191 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 46.486α = 96.89
b = 47.526β = 93.81
c = 57.794γ = 116.65
Software Package:
Software NamePurpose
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement
ADSCdata collection
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-07-18
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description