Precorrin 2

2 S-Adenosyl-L-methionine + Uroporphyrinogen III ⇄ 2 S-Adenosyl-L-homocysteine + Precorrin 2 (2.1.1.107)
S-Adenosyl-L-methionine: amet_c, Uroporphyrinogen III: uppg3_c

S-Adenosyl-L-methionine + Precorrin 1 ⇄ S-Adenosyl-L-homocysteine + Precorrin 2 (2.1.1.107)
S-Adenosyl-L-methionine: amet_c

Precorrin 1

S-Adenosyl-L-methionine + Uroporphyrinogen III ⇄ S-Adenosyl-L-homocysteine + Precorrin 1 (2.1.1.107)
S-Adenosyl-L-methionine: amet_c, Uroporphyrinogen III: uppg3_c

Reversibility:

?

Precorrin 1

S-Adenosyl-L-homocysteine + Precorrin 2 ⇄ S-Adenosyl-L-methionine + Precorrin 1 (2.1.1.107)
S-Adenosyl-L-homocysteine: ahcys_c, Precorrin 2: dscl_c

Reversibility:

?