it has been proposed ( slayman , c.l. , long w.s. , and lu , c.y.-h. ( 1973 ) j. membr . biol . 14 , 305 -- 338 ) that in neurospora crassa , a plasma membrane atpase functions to pump h+ ions out of the cell , thereby generating an electrochemical gradient that can drive transport processes .
C0007603
plasma membrane
C0007634
cell