Novel proteins involved in photosynthesis
Targeted inactivation of ycfs in tobacco and in the green
alga Chlamydomonas reinhardtii has, over the past few
years, led to the discovery of novel subunits of the
cytochrome b6f complex (YCF7/PetL and YCF6/PetN)
(Fig. 2) and assembly factors for photosystem I (PSI),
such as YCF3 and YCF4 (reviewed in Ref. [8]). YCF3 is a
chaperone that interacts directly and specifically with at
least two of the PSI subunits during assembly of the PSI
complex [9]. For the ycf9 gene, which was knocked-out by
several groups