ctt:CtCNB1_1025 K01733 threonine synthase [EC:4.2.3.1] | (GenBank) threonine synthase ctt:CtCNB1_1023 K00003 homoserine dehydrogenase [EC:1.1.1.3] | (GenBank) homoserine dehydrogenase ctt:CtCNB1_1022 K14260 alanine-synthesizing transaminase [EC:2.6.1.66 2.6.1.2] | (GenBank) aminotransferase, class I and II ctt:CtCNB1_1021 no KO assigned | (GenBank) hypothetical conserved protein