uroporphyrinogen III + 2 S-adenosyl-L-methionine = precorrin-2 + 2 S-adenosyl-L-homocysteine + H(+)
uroporphyrinogen iii + 2 s-adenosyl-l-methionine = precorrin-2 + 2 s-adenosyl-l-homocysteine + h(+)
"S-adenosyl-L-methionine-dependent uroporphyrinogen III methylase"
"s-adenosyl-l-methionine-dependent uroporphyrinogen iii methylase"