Base Pair MismatchNucleic Acid HeteroduplexesDNA Mismatch RepairDNA RepairBase SequenceOligodeoxyribonucleotidesDNAMutS Homolog 2 ProteinMutS DNA Mismatch-Binding ProteinDNA Repair EnzymesColorectal Neoplasms, Hereditary NonpolyposisDNA-Binding ProteinsAdaptor Proteins, Signal TransducingMolecular Sequence DataMutationAdenosine TriphosphatasesMicrosatellite RepeatsBase CompositionBase PairingNuclear ProteinsMicrosatellite InstabilityNucleic Acid ConformationEscherichia coliFrameshift MutationDNA DamageGuanineCarrier ProteinsRecombination, GeneticNeoplasm ProteinsEscherichia coli ProteinsMethylnitronitrosoguanidineEndodeoxyribonucleasesGerm-Line MutationDNA GlycosylasesThymineAmino Acid SequenceMutagenesisSaccharomyces cerevisiaeDNA ReplicationColorectal NeoplasmsDNA, FungalExodeoxyribonucleasesDNA Repair-Deficiency DisordersCytosineOligonucleotidesPlasmidsCloning, MolecularProto-Oncogene ProteinsN-Glycosyl HydrolasesPolymerase Chain ReactionAlkylating AgentsDNA, BacterialSaccharomyces cerevisiae ProteinsDNA Mutational AnalysisThioguanineModels, MolecularFungal ProteinsBacterial ProteinsModels, GeneticGenomic InstabilityAdenineUltraviolet RaysDNA, NeoplasmPromoter Regions, GeneticDNA PrimersBinding SitesTranscription, GeneticRestriction MappingPhenotypeDNA-Directed DNA PolymeraseCrossing Over, GeneticSite-Specific DNA-Methyltransferase (Adenine-Specific)AllelesDNA Methylation2-AminopurineRepetitive Sequences, Nucleic AcidDNA AdductsMethylationProtein BindingNucleic Acid DenaturationCell LineEndonucleasesSequence DeletionKineticsMethyl MethanesulfonateSequence Homology, Nucleic AcidDNA Sequence, UnstableDinucleotide RepeatsHeLa CellsO(6)-Methylguanine-DNA MethyltransferaseSubstrate SpecificityHydrogen BondingUracilDNA Restriction EnzymesEndometrial NeoplasmsSequence Analysis, DNATumor Cells, CulturedGenes, BacterialProliferating Cell Nuclear AntigenAntineoplastic Agents, Alkylating