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
Mixed noncompetitive inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as substrate Kcat at 100 uM using varying levels of [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 Lineweaver-Burk plot analysis (Rvb = 2.17 +/- 0.04 /s)
Mixed noncompetitive inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as substrate Kcat at 250 uM using varying levels of [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 Lineweaver-Burk plot analysis (Rvb = 2.17 +/- 0.04 /s)
Mixed noncompetitive inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as substrate Km at 100 uM using varying levels of [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 Lineweaver-Burk plot analysis (Rvb = 1.2 +/- 0.2 uM)
Mixed noncompetitive inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as substrate Km at 250 uM using varying levels of [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 Lineweaver-Burk plot analysis (Rvb = 1.2 +/- 0.2 uM)
Mixed noncompetitive inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as Kobs at 100 uM using varying levels of [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 Lineweaver-Burk plot analysis (Rvb = 1.98 +/- 0.09 /s)
Mixed noncompetitive inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as Kobs at 250 uM using varying levels of [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 Lineweaver-Burk plot analysis (Rvb = 1.98 +/- 0.09 /s)
Inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as reduction in DHFR steady state activity 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
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 1 hr to 72 hrs 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
Inhibition of recombinant Cryptosporidium hominis TS-DHFR Cys44Ser mutant 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 16 hrs 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
Inhibition of recombinant Cryptosporidium hominis TS-DHFR expressed in Escherichia coli PA414 assessed as decrease in DHFR steady state activity at 500 uM using [3',5',7,9-3H]-H2folate as substrate preincubated for 16 hrs with DTT prior to NADPH addition and incubated for 5 mins followed by substrate addition and measured after 5 mins by NADPH based radiometric chemical quench assay relative to control
Inhibition of recombinant Cryptosporidium hominis TS-DHFR expresssed in Escherichia coli PA414 using dUMP and 5,10-methylenetetrahydrofolate as substrate by spectrometry