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Titolo:
Identification and functional characterization of the promoter region of the human MSH6 gene
Autore:
Szadkowski, M; Jiricny, J;
Indirizzi:
Univ Zurich, Inst Med Radiobiol, CH-8008 Zurich, Switzerland Univ Zurich Zurich Switzerland CH-8008 biol, CH-8008 Zurich, Switzerland Paul Scherrer Inst, CH-8008 Zurich, Switzerland Paul Scherrer Inst Zurich Switzerland CH-8008 H-8008 Zurich, Switzerland
Titolo Testata:
GENES CHROMOSOMES & CANCER
fascicolo: 1, volume: 33, anno: 2002,
pagine: 36 - 46
SICI:
1045-2257(200201)33:1<36:IAFCOT>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
DNA MISMATCH REPAIR; CELL NUCLEAR ANTIGEN; HMLH1 PROMOTER; SACCHAROMYCES-CEREVISIAE; MICROSATELLITE INSTABILITY; TRANSCRIPTION FACTOR; REPLICATION FIDELITY; METHYLATING AGENTS; POLYMERASE-DELTA; YEAST MSH2-MSH6;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
71
Recensione:
Indirizzi per estratti:
Indirizzo: Jiricny, J Univ Zurich, Inst Med Radiobiol, August Forel Str 7, CH-8008 Zurich, Switzerland Univ Zurich August Forel Str 7 Zurich Switzerland CH-8008 land
Citazione:
M. Szadkowski e J. Jiricny, "Identification and functional characterization of the promoter region of the human MSH6 gene", GENE CHROM, 33(1), 2002, pp. 36-46

Abstract

Postreplicative mismatch repair (MMR) corrects polymerase errors arising during DNA replication. Consistent with this role, the Saccharomyces cerevisiae MMR genes MSH2, MSH6, and PMS1 were reported to be transcriptionally upregulated during late G(1) phase of the cell cycle. Surprisingly, despite the high degree of conservation of the MMR system in evolution, the human MMR genes studied to date, MSH2, MLH1, and PMS2, appear to be transcribed from classical housekeeping promoters, and the amounts of the polypeptides encoded by them fluctuate little during the cell cycle. Only the amounts of the 160-kDa MSH6 protein were reported to vary, both during development and following stimulation of cell growth. Moreover, transcription of this gene was found to be downregulated by CpG methylation of the promoter region in asubset of clones treated with alkylating agents. In an attempt to understand the molecular basis underlying these phenomena, we isolated the S' region of the MSH6 gene and subjected it to functional analysis. We now show that the MSH6 gene is also transcribed from a classical housekeeping gene promoter. Despite housing putative binding sites for the transcription factors API, NF-KB, and MTF-I, the MSH6 promoter failed to respond to ionizing radiation or heavy metals. Interestingly, MSH6 transcription was upregulated during late G, phase, even though the levels of the protein remained essentially constant during the cell cycle. (C) 2002 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 09:05:27