membranes with amino acid replacements ( thr-277 -- -- end , gln-269 -- -- leu , or glu-275 -- -- lys ) and the frameshift mutation ( downstream of thr-277 ) had about 15 % of the wild-type atpase activity , but showed different degrees of atp-dependent h+ translocation and growth yield by oxidative phosphorylation , suggesting that the gamma subunit , especially its carboxyl-terminal region , functions in coupling between catalysis and h+ translocation .
C0017797
gln
C0061472
glu