1ZV6

NMR structure of the human dematin headpiece S74E mutant


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 21 
  • 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

A phosphorylation-induced conformation change in dematin headpiece.

Jiang, Z.G.McKnight, C.J.

(2006) Structure 14: 379-387

  • DOI: 10.1016/j.str.2005.11.007

  • PubMed Abstract: 
  • Dematin is an actin binding protein from the junctional complex of the erythrocyte cytoskeleton. The protein has two actin binding sites and bundles actin filaments in vitro. This actin bundling activity is reversibly regulated by phosphorylation in ...

    Dematin is an actin binding protein from the junctional complex of the erythrocyte cytoskeleton. The protein has two actin binding sites and bundles actin filaments in vitro. This actin bundling activity is reversibly regulated by phosphorylation in the carboxyl terminal "headpiece" domain (DHP). DHP is a typical villin-type headpiece actin binding motif and contains a flexible N-terminal loop and an alpha-helical C-terminal subdomain that is phosphorylated at Ser74. The NMR structure of a Ser74-to-Glu mutant (DHPs74e) closely mimics the conformation of phosphorylated DHP. The negative charge at Ser74 does not alter the conformation of the C-terminal subdomain, but attracts the N-terminal loop toward the C terminus, changing the orientation of the N-terminal subdomain. NMR relaxation studies also indicate reduced mobility in the N-terminal loop in DHPs74e. Thus, phosphorylation in DHP serves as a switch controlling the conformational state of DHP and the actin bundling activity of dematin.


    Organizational Affiliation

    Department of Physiology and Biophysics, Boston University School of Medicine, 715 Albany Street, Boston, Massachusetts 02118, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EPB49 protein
A
68Homo sapiensMutation(s): 1 
Gene Names: DMTN (DMT, EPB49)
Find proteins for Q08495 (Homo sapiens)
Go to Gene View: DMTN
Go to UniProtKB:  Q08495
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1ZV6 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-03-21
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance