2012
Pre-steady state kinetic analysis of cyclobutyl derivatives of 2′-deoxyadenosine 5′-triphosphate as inhibitors of HIV-1 reverse transcriptase
Kim J, Wang L, Li Y, Becnel K, Frey K, Garforth S, Prasad V, Schinazi R, Liotta D, Anderson K. Pre-steady state kinetic analysis of cyclobutyl derivatives of 2′-deoxyadenosine 5′-triphosphate as inhibitors of HIV-1 reverse transcriptase. Bioorganic & Medicinal Chemistry Letters 2012, 22: 4064-4067. PMID: 22595174, PMCID: PMC3362660, DOI: 10.1016/j.bmcl.2012.04.078.Peer-Reviewed Original ResearchBalancing Antiviral Potency and Host Toxicity: Identifying a Nucleotide Inhibitor with an Optimal Kinetic Phenotype for HIV-1 Reverse Transcriptase
Sohl C, Kasiviswanathan R, Kim J, Pradere U, Schinazi R, Copeland W, Mitsuya H, Baba M, Anderson K. Balancing Antiviral Potency and Host Toxicity: Identifying a Nucleotide Inhibitor with an Optimal Kinetic Phenotype for HIV-1 Reverse Transcriptase. Molecular Pharmacology 2012, 82: 125-133. PMID: 22513406, PMCID: PMC3382833, DOI: 10.1124/mol.112.078758.Peer-Reviewed Original ResearchConceptsNucleoside reverse transcriptase inhibitorsHost toxicityClinical trialsReverse transcriptaseTreatment of HIV infectionMinimal host toxicityUnique toxicity profilePhase II clinical trialReverse transcriptase inhibitorsII clinical trialsHIV-1 reverse transcriptaseWild-typeAntiretroviral efficacyHIV infectionToxicity profileTranscriptase inhibitorsHIV-1Molecular mechanismsTreat HIVMechanisms of toxicityMitochondrial toxicityMolecular mechanisms of toxicityAntiviral potencyViral target proteinsThymidine analog
2004
Relationship between Antiviral Activity and Host Toxicity: Comparison of the Incorporation Efficiencies of 2′,3′-Dideoxy-5-Fluoro-3′-Thiacytidine-Triphosphate Analogs by Human Immunodeficiency Virus Type 1 Reverse Transcriptase and Human Mitochondrial DNA Polymerase
Feng J, Murakami E, Zorca S, Johnson A, Johnson K, Schinazi R, Furman P, Anderson K. Relationship between Antiviral Activity and Host Toxicity: Comparison of the Incorporation Efficiencies of 2′,3′-Dideoxy-5-Fluoro-3′-Thiacytidine-Triphosphate Analogs by Human Immunodeficiency Virus Type 1 Reverse Transcriptase and Human Mitochondrial DNA Polymerase. Antimicrobial Agents And Chemotherapy 2004, 48: 1300-1306. PMID: 15047533, PMCID: PMC375312, DOI: 10.1128/aac.48.4.1300-1306.2004.Peer-Reviewed Original ResearchConceptsHuman mitochondrial DNA polymeraseMitochondrial DNA polymeraseDNA-DNAPolymerase gammaHuman immunodeficiency virusDNA polymerasePrimer-templateHuman mitochondrial DNA polymerase gammaPre-steady-state kinetic analysisMitochondrial DNA polymerase gammaDNA polymerase gammaMolecular mechanism of inhibitionHIV-1Treatment of human immunodeficiency virusExonuclease activityDNA-RNAReverse transcriptaseFood and Drug AdministrationClinical trial studyMolecular mechanismsMechanism of inhibitionHuman immunodeficiency virus type 1 reverse transcriptaseEnzymatic assayImmunodeficiency virusPolymerase
2003
Characterization of Novel Reverse Transcriptase and Other RNA-associated Catalytic Activities by Human DNA Polymerase γ IMPORTANCE IN MITOCHONDRIAL DNA REPLICATION*
Murakami E, Feng J, Lee H, Hanes J, Johnson K, Anderson K. Characterization of Novel Reverse Transcriptase and Other RNA-associated Catalytic Activities by Human DNA Polymerase γ IMPORTANCE IN MITOCHONDRIAL DNA REPLICATION*. Journal Of Biological Chemistry 2003, 278: 36403-36409. PMID: 12857740, DOI: 10.1074/jbc.m306236200.Peer-Reviewed Original ResearchConceptsMtDNA genomeMtDNA replicationPol gammaInitiation of mtDNA replicationRNA-primed DNA synthesisHuman mitochondrial DNA polymeraseMitochondrial DNA polymeraseReverse transcriptionDNA synthesis activityPhysiologically relevant ratesMitochondrial DNARibonucleotide incorporationProofreading activitySingle ribonucleotidesHeteroduplex intermediatesRibonucleotide triphosphatesRNA templateDNA primersDNA polymeraseReverse transcriptaseDNA excisionMtDNAAccessory subunitsDNA synthesisEnzymatic pathways
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 ResearchThe Kinetic Mechanism of the Human Bifunctional Enzyme ATIC (5-Amino-4-imidazolecarboxamide Ribonucleotide Transformylase/Inosine 5′-Monophosphate Cyclohydrolase) A SURPRISING LACK OF SUBSTRATE CHANNELING*
Bulock K, Beardsley G, Anderson K. The Kinetic Mechanism of the Human Bifunctional Enzyme ATIC (5-Amino-4-imidazolecarboxamide Ribonucleotide Transformylase/Inosine 5′-Monophosphate Cyclohydrolase) A SURPRISING LACK OF SUBSTRATE CHANNELING*. Journal Of Biological Chemistry 2002, 277: 22168-22174. PMID: 11948179, DOI: 10.1074/jbc.m111964200.Peer-Reviewed Original ResearchConceptsCyclohydrolase reactionProduction of inosine monophosphateRelease of tetrahydrofolateSteady-state kinetic techniquesStopped-flow absorbanceBifunctional enzymeActive siteBifunctional proteinSubstrate channelingInosine 5'-monophosphateCyclohydrolaseEnzymatic activityChemotherapeutic targetEnzyme reaction pathwayInosine monophosphateKinetic mechanismFormyltransferaseProteinEnzymeKinetic analysisPathwayKinetic advantageKinetic evidenceKinetic techniquesRibonucleotides
2001
Toxicity of Antiviral Nucleoside Analogs and the Human Mitochondrial DNA Polymerase*
Johnson A, Ray A, Hanes J, Suo Z, Colacino J, Anderson K, Johnson K. Toxicity of Antiviral Nucleoside Analogs and the Human Mitochondrial DNA Polymerase*. Journal Of Biological Chemistry 2001, 276: 40847-40857. PMID: 11526116, DOI: 10.1074/jbc.m106743200.Peer-Reviewed Original ResearchInsights into the Molecular Mechanism of Mitochondrial Toxicity by AIDS Drugs*
Feng J, Johnson A, Johnson K, Anderson K. Insights into the Molecular Mechanism of Mitochondrial Toxicity by AIDS Drugs*. Journal Of Biological Chemistry 2001, 276: 23832-23837. PMID: 11328813, DOI: 10.1074/jbc.m101156200.Peer-Reviewed Original ResearchMeSH KeywordsAcquired Immunodeficiency SyndromeAnti-HIV AgentsCytidine TriphosphateDeoxycytosine NucleotidesDideoxynucleotidesDNADNA Polymerase gammaDNA ReplicationDNA, MitochondrialDNA-Directed DNA PolymeraseExodeoxyribonucleasesHumansKineticsLamivudineMitochondriaNucleic Acid Synthesis InhibitorsReverse Transcriptase InhibitorsZalcitabineConceptsPol gammaHuman mitochondrial DNA polymeraseHuman pol gammaMitochondrial DNA replicationMitochondrial DNA polymeraseToxicity of nucleoside analogsCytosine analogsMechanism of mitochondrial toxicityExonuclease activityDNA primersDNA replicationDNA polymeraseNucleoside analogsRate of excisionStructure/function relationshipsMolecular mechanismsLong-term administrationToxic inhibitorsExonucleaseTreatment of AIDSPolymeraseClinical toxicityMitochondrial toxicityDNAPol
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/erbBEnergetics of S-Adenosylmethionine Synthetase Catalysis †
McQueney M, Anderson K, Markham G. Energetics of S-Adenosylmethionine Synthetase Catalysis †. Biochemistry 2000, 39: 4443-4454. PMID: 10757994, DOI: 10.1021/bi992876s.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAmino Acid SequenceBinding SitesCatalysisComputer SimulationDiphosphatesEscherichia coliFluorescenceHydrolysisIsomerismKineticsLigandsMethionineMethionine AdenosyltransferaseOxygenOxygen IsotopesPhosphatesPolyphosphatesS-AdenosylmethionineSolventsThermodynamicsTitrimetryWaterConceptsFree energy profilesSubstrate bindingLoop movementEnergy profilesFormation of AdoMetS-adenosylmethionineChemical interconversion stepPre-steady-state kineticsS-adenosylmethionine synthetaseProduct releaseP(i) complexEquilibrium binding measurementsEnzyme-catalyzed reactionsAdoMet formationBiological alkylating agentsConcentration of substrateFormation reactionCrystallographic studiesEnzyme turnoverEquilibrium constantsCatalyze formationRate constantsInterconversion stepActive siteBinding energy
1999
Initiation of Minus-Strand DNA Synthesis by Human Immunodeficiency Virus Type 1 Reverse Transcriptase †
Vaccaro J, Singh H, Anderson K. Initiation of Minus-Strand DNA Synthesis by Human Immunodeficiency Virus Type 1 Reverse Transcriptase †. Biochemistry 1999, 38: 15978-15985. PMID: 10625465, DOI: 10.1021/bi990945x.Peer-Reviewed Original ResearchConceptsHIV-1 reverse transcriptaseDNA/DNA substratesReverse transcriptaseHuman immunodeficiency virus type 1 reverse transcriptaseType 1 reverse transcriptasePrimer-template substrateDNA synthesisMinus-strand DNA synthesisConcentrations of dCTPDNA/RNADeoxynucleotide incorporationMolecular mechanismsTranscriptaseSteady-state releaseInitiationHigh affinityRNAReleaseStrand DNA synthesisMechanistic studies show that (−)‐FTC‐TP is a better inhibitor of HIV‐1 reverse transcriptase than 3TC‐TP
Feng J, Shi J, Schinazi R, Anderson K. Mechanistic studies show that (−)‐FTC‐TP is a better inhibitor of HIV‐1 reverse transcriptase than 3TC‐TP. The FASEB Journal 1999, 13: 1511-1517. PMID: 10463941, DOI: 10.1096/fasebj.13.12.1511.Peer-Reviewed Original ResearchConceptsHIV-1 reverse transcriptaseFTC-TPClinical trialsReverse transcriptaseOngoing clinical trialsTreatment of AIDSAntiretroviral activityClinical potencyViral replicationBeta 2Triphosphate formNucleoside inhibitorsDifferential potencyRNA-dependent DNA synthesisEnhanced potencyTrialsPotencyMolecular mechanismsMechanistic studiesDNA synthesisInhibitorsTranscriptaseFTCMechanistic Studies Examining the Efficiency and Fidelity of DNA Synthesis by the 3TC-Resistant Mutant (184V) of HIV-1 Reverse Transcriptase †
Feng J, Anderson K. Mechanistic Studies Examining the Efficiency and Fidelity of DNA Synthesis by the 3TC-Resistant Mutant (184V) of HIV-1 Reverse Transcriptase †. Biochemistry 1999, 38: 9440-9448. PMID: 10413520, DOI: 10.1021/bi990709m.Peer-Reviewed Original ResearchConceptsHIV-1 reverse transcriptaseM184V RTHIV-1 virusWild-type HIV-1 reverse transcriptaseReverse transcriptaseDNA-dependent DNA polymerizationStrong antiviral effectRNA-dependent DNA polymerizationCombination therapyAntiviral effectMethionine 184Mutant reverse transcriptaseMutant HIV-1 reverse transcriptaseRT fidelityCorresponding DNA templateSingle amino acid substitutionMolecular mechanismsAmino acid substitutionsVirusDNA synthesisTranscriptaseAcid substitutionsHigh levelsClinicTherapyThe Catalytic Mechanism of EPSP Synthase Revisited †
Lewis J, Johnson K, Anderson K. The Catalytic Mechanism of EPSP Synthase Revisited †. Biochemistry 1999, 38: 7372-7379. PMID: 10353849, DOI: 10.1021/bi9830258.Peer-Reviewed Original ResearchMeSH Keywords3-Phosphoshikimate 1-CarboxyvinyltransferaseAlkyl and Aryl TransferasesAmino Acid SubstitutionBinding SitesCatalysisChromatography, High Pressure LiquidEscherichia coliFreezingKineticsMutagenesis, Site-DirectedNuclear Magnetic Resonance, BiomolecularPhosphoenolpyruvateProtonsSubstrate SpecificityConceptsEPSP synthaseEnzyme intermediateKinetic competenceSingle-turnover experimentsSubstrate to productSolid-state NMRSolid-state NMR studiesEnzyme assaysEnzyme reaction pathwaySDS-PAGECatalytic mechanismDegrees CSpeciesEnzymeIntermediate speciesNMR studiesSide productsCharacterized reaction productsSample preparationDisappearance of substrateSynthaseReaction productsFormation of productsBreakdown productsReaction pathwaysUsing loop length variants to dissect the folding pathway of a four-helix-bundle protein 11Edited by P. E. Wright
Nagi A, Anderson K, Regan L. Using loop length variants to dissect the folding pathway of a four-helix-bundle protein 11Edited by P. E. Wright. Journal Of Molecular Biology 1999, 286: 257-265. PMID: 9931264, DOI: 10.1006/jmbi.1998.2474.Peer-Reviewed Original ResearchConceptsFour-helix bundle proteinWild-type proteinHelix-connecting loopsProtein folding pathwaysMutant proteinsTwo-residue loopSame general mechanismHelix monomersLength variantsFolding pathwaysE. WrightDimeric intermediateProteinGeneral mechanismFoldingPolyglycine linkerPathwayGlycine linkerLinkerLoop lengthAlterations[6] Fundamental mechanisms of substrate channeling
Anderson K. [6] Fundamental mechanisms of substrate channeling. Methods In Enzymology 1999, 308: 111-145. PMID: 10507003, DOI: 10.1016/s0076-6879(99)08008-8.Peer-Reviewed Original ResearchAnimalsBinding SitesCarbamoyl-Phosphate Synthase (Ammonia)Citrate (si)-SynthaseDiffusionDimerizationGlycerophosphatesIndolesKineticsLeishmania majorMagnetic Resonance SpectroscopyMalate DehydrogenaseModels, MolecularMultienzyme ComplexesMutationPeptide SynthasesProtein ConformationSalmonella typhimuriumTetrahydrofolate DehydrogenaseThymidylate SynthaseTryptophan Synthase
1998
Mechanistic Studies Comparing the Incorporation of (+) and (−) Isomers of 3TCTP by HIV-1 Reverse Transcriptase †
Feng J, Anderson K. Mechanistic Studies Comparing the Incorporation of (+) and (−) Isomers of 3TCTP by HIV-1 Reverse Transcriptase †. Biochemistry 1998, 38: 55-63. PMID: 9890882, DOI: 10.1021/bi982340r.Peer-Reviewed Original ResearchCatalytic Mechanism of Kdo8P Synthase: Transient Kinetic Studies and Evaluation of a Putative Reaction Intermediate †
Liang P, Lewis J, Anderson K, Kohen A, D'Souza F, Benenson Y, Baasov T. Catalytic Mechanism of Kdo8P Synthase: Transient Kinetic Studies and Evaluation of a Putative Reaction Intermediate †. Biochemistry 1998, 37: 16390-16399. PMID: 9819231, DOI: 10.1021/bi981374w.Peer-Reviewed Original ResearchConceptsTransient kinetic studiesKDO8P synthaseRapid chemical quench experimentsIntermediate 2Chemical quench experimentsKinetic studiesBeta-pyranose formPutative reaction intermediatesChemical synthesisNMR spectroscopySynthetic 2Anomeric phosphatesReaction intermediatesCatalytic pathwayReaction pathwaysEnzyme catalysisCatalytic mechanismTurnover conditionsMechanistic pathwaysPutative reactionsReactionPhosphate hydrolysisSubstrate activityCorresponding control experimentsAlternate substratesImplication of the tRNA Initiation Step for Human Immunodeficiency Virus Type 1 Reverse Transcriptase in the Mechanism of 3‘-Azido-3‘-deoxythymidine (AZT) Resistance †
Vaccaro J, Anderson K. Implication of the tRNA Initiation Step for Human Immunodeficiency Virus Type 1 Reverse Transcriptase in the Mechanism of 3‘-Azido-3‘-deoxythymidine (AZT) Resistance †. Biochemistry 1998, 37: 14189-14194. PMID: 9760256, DOI: 10.1021/bi9810353.Peer-Reviewed Original ResearchConceptsHIV-1 reverse transcriptaseLong-term AZT therapyReverse transcriptaseHuman immunodeficiency virus type 1 reverse transcriptaseAZT-resistant reverse transcriptaseType 1 reverse transcriptaseNew pharmacological basisAZT therapyAIDS patientsWild-type HIV-1 reverse transcriptasePharmacological basisAZT resistanceClinical resistanceMutant HIV-1 reverse transcriptaseDrug resistanceViral isolatesLack of correlationPatientsPrimer-template substrateAIDS drugsTranscriptaseSubstrate Channeling and Domain−Domain Interactions in Bifunctional Thymidylate Synthase−Dihydrofolate Reductase †
Liang P, Anderson K. Substrate Channeling and Domain−Domain Interactions in Bifunctional Thymidylate Synthase−Dihydrofolate Reductase †. Biochemistry 1998, 37: 12195-12205. PMID: 9724533, DOI: 10.1021/bi9803168.Peer-Reviewed Original ResearchConceptsDHFR active siteActive siteTS active siteCrystal structureTransient kinetic analysisEnzyme active siteBifunctional TS-DHFRProtein surfaceTS-DHFRKinetics of substrateReductase enzymeSingle polypeptide chainKinetic analysisDihydrofolateThymidylate synthasePolypeptide chainSubstrateEnzymeStructureDomain-domain interactionsSpecies of protozoaInteractionKineticsL. majorChain