2MF6

Solution NMR structure of Chimeric Avidin, ChiAVD(I117Y), in the biotin bound form


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Chimeric Avidin - NMR Structure and Dynamics of a 56 kDa Homotetrameric Thermostable Protein

Tossavainen, H.Kukkurainen, S.Maatta, J.A.E.Kahkonen, N.Pihlajamaa, T.Hytonen, V.P.Kulomaa, M.S.Permi, P.

(2014) Plos One 9: e100564-e100564

  • DOI: 10.1371/journal.pone.0100564

  • PubMed Abstract: 
  • Chimeric avidin (ChiAVD) is a product of rational protein engineering remarkably resistant to heat and harsh conditions. In quest of the fundamentals behind factors affecting stability we have elucidated the solution NMR spectroscopic structure of th ...

    Chimeric avidin (ChiAVD) is a product of rational protein engineering remarkably resistant to heat and harsh conditions. In quest of the fundamentals behind factors affecting stability we have elucidated the solution NMR spectroscopic structure of the biotin-bound form of ChiAVD and characterized the protein dynamics through 15N relaxation and hydrogen/deuterium (H/D) exchange of this and the biotin-free form. To surmount the challenges arising from the very large size of the protein for NMR spectroscopy, we took advantage of its high thermostability. Conventional triple resonance experiments for fully protonated proteins combined with methyl-detection optimized experiments acquired at 58°C were adequate for the structure determination of this 56 kDa protein. The model-free parameters derived from the 15N relaxation data reveal a remarkably rigid protein at 58°C in both the biotin-bound and the free forms. The H/D exchange experiments indicate a notable increase in hydrogen protection upon biotin binding.


    Organizational Affiliation

    Program in Structural Biology and Biophysics, Institute of Biotechnology, University of Helsinki, Helsinki, Finland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Avidin, Avidin-related protein 4/5
A, D, B, C
129Gallus gallusGene Names: AVR4, AVR5, AVD
Find proteins for P56734 (Gallus gallus)
Go to UniProtKB:  P56734
Find proteins for P02701 (Gallus gallus)
Go to UniProtKB:  P02701
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 15 
  • 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: 2014-08-06
    Type: Initial release