Small Cab-like proteins retard degradation of photosystem II-associated chlorophyll in Synechocystis sp. PCC 6803: kinetic analysis of pigment labeling with 15N and 13C.

Abstract excerpt

Isotope (Na(15)NO(3), ((15)NH(4))SO(4) or [(13)C]glucose) labeling was used to analyze chlorophyll synthesis and degradation rates in a set of Synechocystis mutants that lacked single or multiple small Cab-like proteins (SCPs), as well as photosystem I or II. When all five small Cab-like proteins were inactivated in the wild-type background, chlorophyll stability was not affected unless the scpABCDE(-) strain was...

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