title: Anc1, a protein associated with multiple transcription complexes, is involved in postreplication repair pathway in S. cerevisiae.
abstract: Yeast strains lacking Anc1, a member of the YEATS protein family, are sensitive to several DNA damaging agents. The YEATS family includes two human genes that are common fusion partners with MLL in human acute leukemias. Anc1 is a member of seven multi-protein complexes involved in transcription, and the damage sensitivity observed in anc1Delta cells is mirrored in strains deleted for some other non-essential members of several of these complexes. Here we show that ANC1 is in the same epistasis group as SRS2 and RAD5, members of the postreplication repair (PRR) pathway, but has additive or synergistic interactions with several other members of this pathway. Although PRR is traditionally divided into an "error-prone" and an "error-free" branch, ANC1 is not epistatic with all members of either established branch, and instead defines a new error-free branch of the PRR pathway. Like several genes involved in PRR, an intact ANC1 gene significantly suppresses spontaneous mutation rates, including the expansion of (CAG)(25) repeats. Anc1's role in the PRR pathway, as well as its role in suppressing triplet repeats, point to a possible mechanism for a protein of potential medical interest.
authors.affiliation: Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA.
authors.forename: Rachel L
authors.initials: RL
authors.lastname: Erlich
authors.forename: Rebecca C
authors.initials: RC
authors.lastname: Fry
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Begley
authors.forename: Danielle L
authors.initials: DL
authors.lastname: Daee
authors.forename: Robert S
authors.initials: RS
authors.lastname: Lahue
authors.forename: Leona D
authors.initials: LD
authors.lastname: Samson
mesh_terms: D000478:Alkylation; D002453:Cell Cycle / Q000502:physiology; D004249:DNA Damage; D004260:DNA Repair; D004261:DNA Replication; D004271:DNA, Fungal; D004843:Epistasis, Genetic; D015966:Gene Expression Regulation, Fungal; D006801:Humans; D016296:Mutagenesis; D009154:Mutation; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000502:physiology*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics / Q000502:physiology*; D035362:Transcription Factor TFIID / Q000235:genetics / Q000502:physiology*; D014158:Transcription, Genetic; D018911:Trinucleotide Repeats; D014466:Ultraviolet Rays
chemical_list: D004271:DNA, Fungal; D029701:Saccharomyces cerevisiae Proteins; C090313:TAF14 protein, S cerevisiae; D035362:Transcription Factor TFIID