CBBX_RHOSH Seems to be necessary for the expression of RuBisCO. 309 cbbX MTDAATAPTSIDLRAEYEGSGAKEVLEELDRELIGLKPVKDRIRETAALLLVERARQKLGLAHETPTLHMSFTGNPGTGKTTVALKMAGLLHRLGYVRKGHLVSVTRDDLVGQYIGHTAPKTKEVLKRAMGGVLFIDEAYYLYRPDNERDYGQEAIEILLQVMENNRDDLVVILAGYADRMENFFQSNPGFRSRIAHHIEFPDYSDEELFEIAGHMLDDQNYQMTPEAETALRAYIGLRRNQPHFANARSIRNALDRARLRQANRLFTASSGPLDARALSTMAEEDIRASRVFKGGLDSERRAAEALAR Protein CbbX