Site-directed mutagenesis of the phosphorylatable serine (Ser8) in C4 phosphoenolpyruvate carboxylase from sorghum. The effect of negative charge at position 8.


The properties of the dephospho and in vitro phosphorylated forms of recombinant sorghum phosphoenolpyruvate carboxylase have been compared with those of the authentic dark (dephospho) and light (phospho) leaf enzyme forms and two mutant enzymes in which the phosphorylatable serine residue (Ser8) has been changed by site-directed mutagenesis to Cys (S8C) or… (More)


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