DNA RepairDNA Mutational AnalysisDNA Repair EnzymesXeroderma Pigmentosum Group D ProteinMolecular Sequence DataBase SequenceDNA-Binding ProteinsPolymerase Chain ReactionDNA DamageMutationDNA GlycosylasesUltraviolet RaysEndonucleasesPolymorphism, GeneticMutS Homolog 2 ProteinDNA Mismatch RepairGenetic Predisposition to DiseaseDNA HelicasesGenotypeXeroderma PigmentosumNuclear ProteinsAmino Acid SequenceXeroderma Pigmentosum Group A ProteinO(6)-Methylguanine-DNA MethyltransferaseDNA-(Apurinic or Apyrimidinic Site) LyaseCase-Control StudiesBase Pair MismatchPolymorphism, Single NucleotideRad52 DNA Repair and Recombination ProteinRad51 RecombinaseRecombination, GeneticSaccharomyces cerevisiaeMutagenesis, Site-DirectedDNAMutagenesisComet AssayMethyl MethanesulfonateColorectal Neoplasms, Hereditary NonpolyposisTranscription FactorsAdaptor Proteins, Signal TransducingSaccharomyces cerevisiae ProteinsGenomic InstabilityAllelesPhenotypeCell LineGenetic Complementation TestPromoter Regions, GeneticDNA Modification MethylasesBinding SitesEndodeoxyribonucleasesN-Glycosyl HydrolasesEscherichia coliGenes, FungalDNA Breaks, Double-StrandedRadiation ToleranceAdenosine TriphosphatasesFungal ProteinsTranscription, GeneticDNA LigasesSequence Homology, Amino AcidProtein BindingCell Cycle ProteinsDNA ReplicationCarrier ProteinsDNA, NeoplasmProtein Structure, TertiaryMicrosatellite RepeatsPlasmidsExodeoxyribonucleasesBacterial ProteinsDNA, FungalRadiation, IonizingTumor Suppressor ProteinsDNA PrimersAmino Acid SubstitutionModels, MolecularMutagensCloning, MolecularGamma RaysGene FrequencyRecQ HelicasesExonsDose-Response Relationship, RadiationPoint MutationNeoplasm ProteinsAlkylating AgentsGene DeletionRNA, MessengerProteinsRecombinational DNA RepairRisk FactorsDNA MethylationDNA AdductsColorectal NeoplasmsGerm-Line MutationSequence DeletionMicrosatellite InstabilityAtaxia Telangiectasia Mutated ProteinsCodonSequence Alignment