title |
Inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as reduction in DHFR steady state activity at 500 uM using [3',5',7,9-3H]-H2folate as substrate preincubated for 10 mins before NADPH addition for 5 mins followed by substrate addition and measured after 5 mins by NADPH based radiometric chemical quench assay relative to control |