the vacuolar membrane h+-atpase was found to be composed of two major polypeptides a and b of mr = 89,000 and 64,000 , respectively , and a n , n'-dicyclohexylcarbodiimide binding polypeptide c of mr = 19,500 , whose polypeptide composition was also different from those of either plasma membrane h+-atpase or mitochondrial f1-atpase of s. cerevisiae .
C0379099
vacuolar membrane h
C0018437
mitochondrial