Phosphorylation of bacterial-type phosphoenolpyruvate carboxylase at Ser425 provides a further tier of enzyme control in developing castor oil seeds

• Published in: Biochemical journal Vol. 433; no. 1; p. 65
• Main Authors: O'Leary, Brendan, Rao, Srinath K, Plaxton, William C
• Format: Journal Article
• Language: English
• Published: England 01.01.2011
• Subjects: Kinetics; Phosphoenolpyruvate Carboxylase - antagonists & inhibitors; Phosphoenolpyruvate Carboxylase - metabolism; Phosphorylation; Plant Proteins; Protein Processing, Post-Translational; Ricinus communis - enzymology; Seeds - enzymology; Seeds - growth & development; Serine - metabolism

PEPC [PEP (phosphoenolpyruvate) carboxylase] is a tightly controlled anaplerotic enzyme situated at a pivotal branch point of plant carbohydrate metabolism. Two distinct oligomeric PEPC classes were discovered in developing COS (castor oil seeds). Class-1 PEPC is a typical homotetramer of 107 kDa PT...