protein serine/threonine kinase activity [3-methyl-2-oxobutanoate dehydrogenase (acetyl-transferring)] kinase activity https://github.com/geneontology/go-ontology/issues/28789 branched-chain 2-oxo acid dehydrogenase kinase activity EC:2.7.11.4 molecular_function branched-chain alpha-ketoacid dehydrogenase kinase activity BCKD kinase activity BCK GO:0047323 Catalysis of the reaction: ATP + L-seryl-[3-methyl-2-oxobutanoate dehydrogenase] = ADP + H+ + O-phospho-L-seryl-[3-methyl-2-oxobutanoate dehydrogenase]. [3-methyl-2-oxobutanoate dehydrogenase (lipoamide)] kinase activity branched-chain keto acid dehydrogenase kinase activity RHEA:17301 MetaCyc:2.7.11.4-RXN Reactome:R-HSA-9912480 3-methyl-2-oxobutanoate dehydrogenase (acetyl-transferring) kinase activity STK2 BCODH kinase activity branched-chain oxo acid dehydrogenase kinase (phosphorylating) activity ATP:3-methyl-2-oxobutanoate dehydrogenase (acetyl-transferring) phosphotransferase activity