L-homocysteine + ATP = L-homocysteine thiolactone + AMP + diphosphate
l-homocysteine + atp = l-homocysteine thiolactone + amp + diphosphate
L-homocysteine + ATP = L-homocysteine thiolactone + AMP + diphosphate
l-homocysteine + atp = l-homocysteine thiolactone + amp + diphosphate