1OWA

Solution Structural Studies on Human Erythrocyte Alpha Spectrin N Terminal Tetramerization Domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: Lowest Energy conformers 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structural studies on human erythrocyte alpha-spectrin tetramerization site.

Park, S.Caffrey, M.S.Johnson, M.E.Fung, L.W.

(2003) J.Biol.Chem. 278: 21837-21844

  • DOI: 10.1074/jbc.M300617200

  • PubMed Abstract: 
  • We have determined the solution NMR structure of a recombinant peptide that consists of the first 156 residues of erythroid alpha-spectrin. The first 20 residues preceding the first helix (helix C') are in a disordered conformation. The subsequent th ...

    We have determined the solution NMR structure of a recombinant peptide that consists of the first 156 residues of erythroid alpha-spectrin. The first 20 residues preceding the first helix (helix C') are in a disordered conformation. The subsequent three helices (helices A1, B1, and C1) form a triple helical bundle structural domain that is similar, but not identical, to previously published structures for spectrin from Drosophila and chicken brain. Paramagnetic spin label-induced NMR resonance broadening shows that helix C', the partial domain involved in alpha- and beta-spectrin association, exhibits little interaction with the structural domain. Surprisingly, helix C' is connected to helix A1 of the structural domain by a segment of 7 residues (the junction region) that exhibits a flexible disordered conformation, in contrast to the predicted rigid helical structure. We suggest that the flexibility of this particular junction region may play an important role in modulating the association affinity of alpha- and beta-spectrin at the tetramerization site of different isoforms, such as erythroid spectrin and brain spectrin. These findings may provide insight for explaining various physiological and pathological conditions that are a consequence of varying alpha- and beta-subunit self-association affinities in their formation of the various spectrin tetramers.


    Organizational Affiliation

    Center for Pharmaceutical Biotechnology, University of Illinois, 900 S. Ashland, Chicago, IL 60607, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Spectrin alpha chain, erythrocyte
A
156Homo sapiensMutation(s): 0 
Gene Names: SPTA1 (SPTA)
Find proteins for P02549 (Homo sapiens)
Go to Gene View: SPTA1
Go to UniProtKB:  P02549
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: Lowest Energy conformers 
  • Olderado: 1OWA Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-03-30
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance