label: N,N-dimethylethanolamine phosphate + S-adenosyl-L-methionine = phosphocholine + S-adenosyl-L-homocysteine + H(+)
label_lc: n,n-dimethylethanolamine phosphate + s-adenosyl-l-methionine = phosphocholine + s-adenosyl-l-homocysteine + h(+)