L-homocysteine + glycine betaine <=> N,N-dimethylglycine + L-methionine
l-homocysteine + glycine betaine <=> n,n-dimethylglycine + l-methionine
L-homocysteine + glycine betaine <=> N,N-dimethylglycine + L-methionine
l-homocysteine + glycine betaine <=> n,n-dimethylglycine + l-methionine