Table II. Mutations in hprK of L.casei leading to the observed reduced ynaJ′–lacZ expression.

Mutant	Codon changes	Amino acid replacements
M181A	GGT→AGT; GGG→AGG	G58S; G270R
TG101	GTT→TTT	V267F
TG102	GAT→GTT; CTG→ATG; CAT→TAT	D34V; L152M; H233Y
TG103	AAC→ATC	N272I
TG104	GGC→AGC	G160S
TG200	GGG→GAG	G270E
TG201	GAA→AAA	E163K