Come Learn Primaries #11

Description

A comparative proteome analysis using differential stable isotope labeling of clpr2-1 and wild-type stroma identified 298 proteins, and 113 were quantified. The Calvin cycle was down-regulated, explaining the slower development of clpr2-1. The most striking response was the strong up-regulation of the chloroplast protein translation machinery and chaperones. This suggests that the ClpPRS core complex may be involved in regulation of plastid gene expression, providing a first understanding of the functional role of the Clp family in plastids.

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