Alkylating AgentsAntineoplastic Agents, AlkylatingAmino AcidsAlkylationO(6)-Methylguanine-DNA MethyltransferaseSequence Homology, Amino AcidMethylnitronitrosoguanidineMethyl MethanesulfonateMechlorethamineCarmustineAmino Acid SequenceChlorambucilEthyl MethanesulfonateAmino Acid SubstitutionNitrogen Mustard CompoundsCloning, MolecularDacarbazineDNA RepairMelphalanMutationDNAEscherichia coliDNA DamageBase SequenceGuanineAmino Acids, EssentialMethylnitrosoureaCyclophosphamideSulfuric Acid EstersKineticsMolecular Sequence DataMethyltransferasesAmino Acid Transport SystemsEthylnitrosoureaMutagensBinding SitesThiotepaNitrosourea CompoundsCell LineSequence AlignmentDrug ResistanceAmino Acid MotifsTriaziquoneStructure-Activity RelationshipPhosphoramide MustardsMutagenesis, Site-DirectedRecombinant ProteinsCricetinaeMustard GasAntineoplastic AgentsMitomycinsAziridinesCell SurvivalEtanidazoleModels, MolecularSubstrate SpecificityDNA, ComplementaryDose-Response Relationship, DrugProtein ConformationDNA GlycosylasesMitomycinAmino Acids, AromaticProtein BindingEthylmaleimidePeptide FragmentsDNA Modification MethylasesSequence Homology, Nucleic AcidBacterial ProteinsAmino Acids, Branched-ChainMolecular WeightPropiolactoneAmino Acids, SulfurProtein Structure, TertiaryGenes, BacterialLeucineDNA Repair EnzymesCysteineRestriction MappingRNA, MessengerChromatography, High Pressure LiquidNylonsPlasmidsMutagenesisTumor Cells, CulturedProteinsNeoplasms, Second PrimaryElectrophoresis, Polyacrylamide GelLomustineMesylatesDrug SynergismNimustineTransfectionDNA AdductsPeptidesSarcoma, YoshidaCarrier ProteinsN-Glycosyl HydrolasesMethionine SulfoximinePorfiromycinDrug Resistance, Neoplasm