label: [protein]-D-aspartate + S-adenosyl-L-methionine = [protein]-D-aspartate methyl ester + S-adenosyl-L-homocysteine
label_lc: [protein]-d-aspartate + s-adenosyl-l-methionine = [protein]-d-aspartate methyl ester + s-adenosyl-l-homocysteine