title: In vivo phosphorylation of sorghum leaf phosphoenolpyruvate carboxylase.
abstract: The use of immunological techniques allowed us to purify close to homogeneity phosphoenolpyruvate carboxylase (PEPc, EC 4.1.1.31) from sorghum leaf. It was thus established that: 1) this protein is phosphorylated in vivo on seryl residues; 2) in C4-type photosynthesis, the phosphorylation process mainly concerns the PEPC isozyme form G; 3) enzyme phosphorylation displays significant variations through a day-night alternation which therefore suggests light control of the process.
mesh_terms: D002262:Carboxy-Lyases / Q000378:metabolism*; D015180:Electrophoresis, Gel, Two-Dimensional; D008027:Light; D010730:Phosphoenolpyruvate Carboxylase / Q000378:metabolism*; D010766:Phosphorylation; D010944:Plants / Q000378:metabolism; D011233:Precipitin Tests
chemical_list: D002262:Carboxy-Lyases; D010730:Phosphoenolpyruvate Carboxylase