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 GlycosylasesThymineMutagenesisSaccharomyces cerevisiaeAmino Acid SequenceDNA ReplicationColorectal NeoplasmsDNA, FungalExodeoxyribonucleasesDNA Repair-Deficiency DisordersOligonucleotidesCytosineProto-Oncogene ProteinsPlasmidsAlkylating AgentsCloning, MolecularN-Glycosyl HydrolasesPolymerase Chain ReactionDNA Mutational AnalysisSaccharomyces cerevisiae ProteinsDNA, BacterialThioguanineFungal ProteinsModels, GeneticGenomic InstabilityDNA, NeoplasmModels, MolecularAdenineBacterial ProteinsPromoter Regions, GeneticUltraviolet RaysDNA PrimersTranscription, GeneticRestriction MappingCrossing Over, GeneticDNA-Directed DNA PolymeraseBinding SitesAllelesPhenotype2-AminopurineSite-Specific DNA-Methyltransferase (Adenine-Specific)Repetitive Sequences, Nucleic AcidDNA AdductsDNA MethylationNucleic Acid DenaturationEndonucleasesSequence DeletionDNA Sequence, UnstableDinucleotide RepeatsSequence Homology, Nucleic AcidProtein BindingCell LineHeLa CellsO(6)-Methylguanine-DNA MethyltransferaseUracilEndometrial NeoplasmsDNA Restriction EnzymesHydrogen BondingTumor Cells, CulturedSequence Analysis, DNAProliferating Cell Nuclear AntigenGene ConversionSubstrate SpecificityAntineoplastic Agents, AlkylatingPoint MutationGenes, BacterialGenes