label: precorrin-6Y C5,15-methyltransferase (decarboxylating) activity
label_lc: precorrin-6y c5,15-methyltransferase (decarboxylating) activity
description: "Catalysis of the reaction: 2 S-adenosyl-L-methionine + precorrin-6Y = 2 S-adenosyl-L-homocysteine + precorrin-8X + CO2."