L-homocysteine + ATP + H(+) => L-homocysteinyl-AMP + diphosphate
l-homocysteine + atp + h(+) => l-homocysteinyl-amp + diphosphate
L-homocysteine + ATP + H(+) => L-homocysteinyl-AMP + diphosphate
l-homocysteine + atp + h(+) => l-homocysteinyl-amp + diphosphate