(PSII) has been studied in the cyanobacterium Synechocystis PCC 6803. YCF48 (HCF136)
is involved in the assembly of Arabidopsis thaliana PSII reaction center (RC) complexes but
its mode of action is unclear. We show here that YCF48 is a component of two
cyanobacterial PSII RC-like complexes in vivo and is absent in larger PSII core complexes.
Interruption of ycf48 slowed the formation of PSII complexes in wild type, as judged from …