2.3.3.8 acetylation human knee osteoarthritis chondrocytes exhibit increased ACLY activation (assessed by Ser-455 phosphorylation), associated with increased H3K9 and H3K27 acetylation 757200 2.3.3.8 acetylation the enzyme is activated by acetylation at lysine residues 540, 546, and 554 756333 2.3.3.8 phosphoprotein - 703014, 735902 2.3.3.8 phosphoprotein human knee osteoarthritis chondrocytes exhibit increased ACLY activation (assessed by Ser-455 phosphorylation), associated with increased H3K9 and H3K27 acetylation 757200 2.3.3.8 phosphoprotein phosphorylation of recombinant human ATP:citrate lyase by cAMP-dependent protein kinase abolishes homotropic allosteric regulation of the enzyme by citrate and increases the enzyme activity. Cyclic AMP-dependent protein kinase catalyzes the incorporation of 1 mol of phosphate per mol of enzyme homotetramer, and glycogen synthase kinase-3 incorporated an additional 2 mol of phosphate into the phosphorylated protein 488221 2.3.3.8 phosphoprotein phosphorylation of the enzyme at Thr446, Ser450 and Ser454 is enhanced by glucagon, insulin, vasopressin and transforming growth factor beta1 718760 2.3.3.8 phosphoprotein the enzyme is activated by phosphorylation 756333 2.3.3.8 side-chain modification citrate lyase phosphorylation by cAMP-dependent protein kinase or this kinase plus glycogen synthase kinase-3 decreases the maximal velocity whereas the apparent Km for citrate is unchanged 488205 2.3.3.8 side-chain modification contains 2 mol phosphate per mol of tetramer 488191, 488199 2.3.3.8 side-chain modification histidine phosphorylation of ATP-citrate lyase is inhibited by vanadate 488210