although many divalent cations , including mg2+ , mn2+ , fe2+ , co2+ , ni2+ , zn2+ , ca2+ , and sr2+ , can support dynein atpase activity , the magnitude of atpase increase observed upon treatment with triton x-100 is greatest with mg2+ and mn2+ , which are also the only cations capable of supporting the motility of demembranated flagella at rates similar to those observed in vivo .
C0007448
divalent cations
C0007447
cations