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Updated: Aug 15, 2026

In Vitro Reconstitution of Light-harvesting Complexes of Plants and Green Algae
Published on: October 10, 2014
Amino acid sequences and solution structures of manganese stabilizing protein that affect reconstitution of
Hana Popelkova1, Aaron Wyman, Charles Yocum
1Department of Molecular, Cellular, and Developmental Biology, USA.
Abstract:
This minireview presents a summary of information available on the secondary and tertiary structure of manganese stabilizing protein (MSP) in solution, and on the identity of amino acid residues that affect binding and functional assembly of this protein into Photosystem II. New data on the secondary structure of C-terminal mutants and 90 degrees C-heated manganese stabilizing protein, along with earlier data on the secondary structure of N-terminal mutants and the tertiary structure of all modified MSP species, allow for an evaluation of models for spinach MSP secondary and tertiary structure. This summary of previous and new information better documents the natively unfolded behavior of the protein in solution. A two-step mechanism for binding of manganese stabilizing protein to Photosystem II is discussed and possible solution three-dimensional conformations of the wild-type protein and some of its unfolded mutants, are proposed.
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