Structural Determinats Underlying Photoprotection in the Photoactive Orange Carotenoid Protein of Cyanobacteria Metadata

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Title

  • Main Title Structural Determinats Underlying Photoprotection in the Photoactive Orange Carotenoid Protein of Cyanobacteria

Creator

  • Author: Wilson, Adjele
    Creator Type: Personal
  • Author: Kinney, James N.
    Creator Type: Personal
  • Author: Zwart, Petrus H.
    Creator Type: Personal
  • Author: Punginelli, Claire
    Creator Type: Personal
  • Author: D'Haene, Sandrine
    Creator Type: Personal
  • Author: Perreau, Francois
    Creator Type: Personal
  • Author: Klein, Michael G.
    Creator Type: Personal
  • Author: Kirilovsky, Diana
    Creator Type: Personal
  • Author: Kerfeld, Cheryl
    Creator Type: Personal

Contributor

  • Sponsor: Genomics Division
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2010-04-01

Language

  • English

Description

  • Content Description: The photoprotective processes of photosynthetic organisms involve the dissipation of excess absorbed light energy as heat. Photoprotection in cyanobacteria is mechanistically distinct from that in plants; it involves the Orange Carotenoid Protein (OCP), a water-soluble protein containing a single carotenoid. The OCP is a new member of the family of blue light photoactive proteins; blue-green light triggers the OCP-mediated photoprotective response. Here we report structural and functional characterization of the wildtype and two mutant forms of the OCP, from the model organism Synechocystis PCC6803. The structural analysis provides highresolution detail of the carotenoidprotein interactions that underlie the optical properties of the OCP, unique among carotenoid-proteins in binding a single pigment per polypeptide chain. Collectively, these data implicate several key amino acids in the function of the OCP and reveal that the photoconversion and photoprotective responses of the OCP to blue-green light can be decoupled.
  • Physical Description: 27

Subject

  • Keyword: Optical Properties
  • Keyword: Oranges
  • Keyword: Pigments
  • Keyword: Amino Acids
  • Keyword: Polypeptides
  • Keyword: Microbiology, Photoprotection, Carotenoid Protein, Cyanobacteria
  • Keyword: Functionals
  • Keyword: Carotenoids
  • STI Subject Categories: 99
  • Keyword: Cyanobacteria
  • Keyword: Mutants
  • Keyword: Proteins Microbiology, Photoprotection, Carotenoid Protein, Cyanobacteria

Source

  • Journal Name: The Journal of Biological Chemistry

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: LBNL-3812E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 986243
  • Archival Resource Key: ark:/67531/metadc1012404