Solution Structure of the Circular gamma-Domain Analog from the Wheat Metallothionein Ec-1.
Tarasava, K., Johannsen, S., Freisinger, E.(2013) Molecules 18: 14414-14429
- PubMed: 24284492 
- DOI: https://doi.org/10.3390/molecules181114414
- Primary Citation of Related Structures:  
2MFP - PubMed Abstract: 
The first cyclic analog of a metallothionein (MT) was prepared and analyzed by UV and (magnetic) circular dichroism spectroscopy, ESI-MS as well as NMR spectroscopy. Results reveal that the evaluated cyclic γ-E(c)-1 domain of the wheat MT E(c)-1 retains its ability to coordinate two Zn(II) or Cd(II) ions and adopts a three-dimensional structure that is highly similar to the one of the linear wild-type form. However, the reduced flexibility of the protein backbone facilitates structure solution significantly and results in a certain stabilization of metal binding to the protein.
Organizational Affiliation: 
Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, Zurich CH-8057, Switzerland. freisinger@aci.uzh.ch.