methionine racemase

L-Ala-D/L-Glu epimerase; YkfB; YcjG; AEE; AE epimerase

isoleucine 2-epimerase; BCAA racemase

4-hydroxyproline betaine 2-epimerase; hpbD (gene name); Hyp-B 2-epimerase; (4R)-4-hydroxyproline betaine 2-epimerase

UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-L-glutamate epimerase; murL (gene name); UDP-MurNAc-L-Ala-L-Glu epimerase

histidine racemase; cntK (gene name)

N-acetyl-D-glutamate racemase; dgcA (gene name)