Regulatory Phosphorylation of Maize C4-Form PEP Carboxylase (PEPC): Antibody Detection System and Purification of PEPC-protein Kinase
Activity of phosphoeno/pyruvate carboxylase (PEPC) for C4 photosynthesis is upregulated by light (reviewed in [1, 2]). The regulation is mediated by a specific protein kinase (PEPC-PK) that phosphorylates Ser near N-terminus (Ser-15 in the maize Ca-form PEPC). This phosphorylation is dependent on light intensity in Ca-plants . Hartwell e al  reported that PEPC-PK was regulated by the level of translatable mRNA. No evidence, however, has been obtained to indicate how PEPC-PKs or its mRNAs are regulated and there has been no report about the gene for PEPC-PK.
Key wordschemiluminescence circadian rhythm enzymes light regulation signal transduction synthetic oligopeptide
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