these isolates were characterized by growth on the three branched-chain amino acids ( valine , isoleucine , and leucine ) , on the corresponding branched-chain keto acids ( 2-ketoisovalerate , 2-keto-3-methylvalerate , and 2-ketoisocaproate ) , and on other selected intermediates as carbon sources , and by their enzymatic composition .
C0002521
branched-chain amino acids
C0022192
isoleucine