2017
Understanding the molecular mechanism of substrate channeling and domain communication in protozoal bifunctional TS-DHFR
Anderson K. Understanding the molecular mechanism of substrate channeling and domain communication in protozoal bifunctional TS-DHFR. Protein Engineering Design And Selection 2017, 30: 253-261. PMID: 28338744, PMCID: PMC6438133, DOI: 10.1093/protein/gzx004.Peer-Reviewed Original ResearchConceptsBifunctional thymidylate synthase-dihydrofolate reductaseThymidylate synthase-dihydrofolate reductaseSubstrate channelingDihydrofolate reductaseN-terminal amino acid extensionAmino acid extensionDihydrofolate reductase domainThymidylate synthaseFolate metabolizing enzymesAcid extensionMonofunctional formsPolypeptide chainMutation analysisMolecular mechanismsMetabolic enzymesParasitic protozoaDNA synthesisFunctional regionsInhibitor designSpeciesEnzymeStructural similarityStructural studiesEfficient catalysisLeishmania major
2007
Epidermal Growth Factor Receptor Mutants from Human Lung Cancers Exhibit Enhanced Catalytic Activity and Increased Sensitivity to Gefitinib
Mulloy R, Ferrand A, Kim Y, Sordella R, Bell D, Haber D, Anderson K, Settleman J. Epidermal Growth Factor Receptor Mutants from Human Lung Cancers Exhibit Enhanced Catalytic Activity and Increased Sensitivity to Gefitinib. Cancer Research 2007, 67: 2325-2330. PMID: 17332364, DOI: 10.1158/0008-5472.can-06-4293.Peer-Reviewed Original ResearchConceptsEpidermal growth factor receptorEpidermal growth factor receptor mutantMultiple levels in vivoIn vitro kinase assayEpidermal growth factor receptor functionPurified recombinant proteinWild-type epidermal growth factor receptorSensitivity to kinase inhibitionNon-small cell lung cancerCOOH-terminal tyrosineHuman non-small cell lung cancerIncreased sensitivity to gefitinibSensitivity to gefitinibCell lung cancerAutophosphorylation activityGrowth factor receptorCell-based studiesEGFR kinase inhibitorsCytoplasmic domainRecombinant proteinsKinase assayEnzyme functionDownstream effectorsMutantsKinase activity
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
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
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 ResearchMeSH KeywordsBinding SitesDeoxycytosine NucleotidesDNA, ViralHIV Reverse TranscriptaseHumansKineticsRNARNA, ViralSubstrate SpecificityTemplates, GeneticConceptsHIV-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 synthesisInhibitorsTranscriptaseFTCThe 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 pathways
1998
Catalytic 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 substratesSubstrate 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. majorChainLeishmania major Pteridine Reductase 1 Belongs to the Short Chain Dehydrogenase Family: Stereochemical and Kinetic Evidence †
Luba J, Nare B, Liang P, Anderson K, Beverley S, Hardy L. Leishmania major Pteridine Reductase 1 Belongs to the Short Chain Dehydrogenase Family: Stereochemical and Kinetic Evidence †. Biochemistry 1998, 37: 4093-4104. PMID: 9521731, DOI: 10.1021/bi972693a.Peer-Reviewed Original Research
1997
RNA Dependent DNA Replication Fidelity of HIV-1 Reverse Transcriptase: Evidence of Discrimination between DNA and RNA Substrates †
Kerr S, Anderson K. RNA Dependent DNA Replication Fidelity of HIV-1 Reverse Transcriptase: Evidence of Discrimination between DNA and RNA Substrates †. Biochemistry 1997, 36: 14056-14063. PMID: 9369477, DOI: 10.1021/bi971385+.Peer-Reviewed Original Research
1992
Mechanism and fidelity of HIV reverse transcriptase.
Kati W, Johnson K, Jerva L, Anderson K. Mechanism and fidelity of HIV reverse transcriptase. Journal Of Biological Chemistry 1992, 267: 25988-25997. PMID: 1281479, DOI: 10.1016/s0021-9258(18)35706-5.Peer-Reviewed Original ResearchMeSH KeywordsBase SequenceBinding SitesDeoxyribonucleotidesDNAEscherichia coliHIV Reverse TranscriptaseHIV-1KineticsModels, BiologicalMolecular Sequence DataNucleic Acid HeteroduplexesOligodeoxyribonucleotidesOligoribonucleotidesRecombinant ProteinsRNARNA-Directed DNA PolymeraseSubstrate SpecificityTemplates, GeneticConceptsRNA templateRNA/DNA heteroduplexesRNA cleavageDuplex DNAPre-steady state burstRate of DNA polymerizationDNA-dependent polymerasesRNA cleavage productsBinding of dNTPSingle nucleotide incorporationRibonuclease domainRNA-dependentVirus reverse transcriptasePublished crystal structureNucleotide incorporationNucleoside triphosphatesHuman immunodeficiency virus reverse transcriptaseDNTP complexDissociation of DNADNA polymerizationReverse transcriptaseDATPHeteroduplexCleavage productsRNA
1991
Serine modulates substrate channeling in tryptophan synthase. A novel intersubunit triggering mechanism
Anderson K, Miles E, Johnson K. Serine modulates substrate channeling in tryptophan synthase. A novel intersubunit triggering mechanism. Journal Of Biological Chemistry 1991, 266: 8020-8033. PMID: 1902468, DOI: 10.1016/s0021-9258(18)92934-0.Peer-Reviewed Original ResearchConceptsIndole-3-glycerol phosphateTryptophan synthaseProtein conformationAlpha 2 beta 2 complexReaction of serineAbsence of serineBeta siteFormation of tryptophanAlpha siteSteady-state turnoverActive siteAccumulation of indoleAlpha reactionSubstitution of cysteineSubstrate channelingBeta reactionBeta subunitMetabolic intermediatesSerineAlpha subunitQuench-flowProtein fluorescenceTurnover experimentsProteinTryptophan release