2002
Mechanistic Characterization of Toxoplasma gondiiThymidylate Synthase (TS-DHFR)-Dihydrofolate Reductase EVIDENCE FOR A TS INTERMEDIATE AND TS HALF-SITES REACTIVITY*
Johnson E, Hinz W, Atreya C, Maley F, Anderson K. Mechanistic Characterization of Toxoplasma gondiiThymidylate Synthase (TS-DHFR)-Dihydrofolate Reductase EVIDENCE FOR A TS INTERMEDIATE AND TS HALF-SITES REACTIVITY*. Journal Of Biological Chemistry 2002, 277: 43126-43136. PMID: 12192007, DOI: 10.1074/jbc.m206523200.Peer-Reviewed Original Research
2000
Insights into the HER-2 Receptor Tyrosine Kinase Mechanism and Substrate Specificity Using a Transient Kinetic Analysis †
Jan A, Johnson E, Diamonti A, Carraway K, Anderson K. Insights into the HER-2 Receptor Tyrosine Kinase Mechanism and Substrate Specificity Using a Transient Kinetic Analysis †. Biochemistry 2000, 39: 9786-9803. PMID: 10933796, DOI: 10.1021/bi9924922.Peer-Reviewed Original ResearchConceptsReceptor tyrosine kinasesRecombinant proteinsTyrosine kinaseSerine/threonine kinaseProtein kinase familyReceptor-like proteinCatalytic mechanismDegenerate peptide libraryStopped-flow fluorescence studiesIntracellular tyrosine kinase domainTyrosine kinase mechanismTyrosine kinase domainState kinetic analysisThreonine kinaseKinase familyCatalytic subunitKinase domainPhosphorylation stateSubstrate specificityProtein modificationNucleotide interactionsKinase mechanismConformational changesTransient kinetic investigationsHER-2/erbB
1998
Kinetic Reaction Scheme for the Dihydrofolate Reductase Domain of the Bifunctional Thymidylate Synthase−Dihydrofolate Reductase from Leishmania major †
Liang P, Anderson K. Kinetic Reaction Scheme for the Dihydrofolate Reductase Domain of the Bifunctional Thymidylate Synthase−Dihydrofolate Reductase from Leishmania major †. Biochemistry 1998, 37: 12206-12212. PMID: 9724534, DOI: 10.1021/bi9803170.Peer-Reviewed Original ResearchConceptsThymidylate synthase-dihydrofolate reductaseKinetic reaction schemeCatalytic activityDihydrofolate reductaseBifunctional enzymeReaction schemeBifunctional thymidylate synthase-dihydrofolate reductaseE. coli enzymeSynthase-dihydrofolate reductaseSteady-state turnoverDihydrofolate reductase domainState kinetic methodsSingle polypeptide chainEnzyme dihydrofolate reductaseSpecies of protozoaReaction pathwaysRelease of productsColi enzymeParasite Leishmania majorMonofunctional formsDihydrofolate reductase activityReductase domainConformational changesKinetic stepsPolypeptide chain
1996
HIV-1 Reverse Transcriptase Resistance to Nonnucleoside Inhibitors †
Spence R, Anderson K, Johnson K. HIV-1 Reverse Transcriptase Resistance to Nonnucleoside Inhibitors †. Biochemistry 1996, 35: 1054-1063. PMID: 8547241, DOI: 10.1021/bi952058+.Peer-Reviewed Original ResearchConceptsMutant enzymesPre-steady-state techniquesSingle nucleotide incorporationWild-type complexMaximum incorporation rateNucleotide incorporationEnzyme complexDuplex DNAAffinity 2Cysteine mutationsTwo-step bindingWild-typeConformational changesDecreased affinityEnzymePresence of nevirapineInhibitor resistanceMutationsIncorporation rateY181C mutationWild-type RTReverse transcriptaseHIV-1NevirapineY181C
1995
Mechanism of Inhibition of HIV-1 Reverse Transcriptase by Nonnucleoside Inhibitors
Spence R, Kati W, Anderson K, Johnson K. Mechanism of Inhibition of HIV-1 Reverse Transcriptase by Nonnucleoside Inhibitors. Science 1995, 267: 988-993. PMID: 7532321, PMCID: PMC7526747, DOI: 10.1126/science.7532321.Peer-Reviewed Original ResearchConceptsActive site catalytic residuesPre-steady-state kinetic analysisNucleotide-induced conformational changesInterfere with nucleotide bindingPre-steady-state burstEnzyme-DNA complexPre-steady-stateReverse transcriptasePresence of saturating concentrationsCatalytic residuesNucleotide bindingNucleoside triphosphatesDNA polymerizationNucleotide analogsHydrophobic pocketMechanism of inhibitionNonnucleoside inhibitorsConformational changesNoncompetitive inhibitorInhibition of HIV-1 reverse transcriptaseKinetic analysisHIV-1 reverse transcriptaseSaturating concentrationsTranscriptaseInhibitors