[7]. A recent study has shown
that the product of the nuclear-encoded fertility restorer gene Rf5
forms a complex with the glycine-rich protein GRP162. The complex catalyzes the cleavage of the CMS-associated transcripts
atp6-orfH79 and orfH79(s). Ultimately, this suppresses the expression of orfH79 [4]. The function of mitochondria has been shown
to recover in the absence of the detrimental peptide ORFH79.