Scientific background: |
MCM7(Minichromosome Maintenance, s. Cerevisiae, homolog of, 7), also called CDC47, FORMERLY,
is one of the highly conserved mini-chromosome maintenance proteins (MCM) that are essential for the
initiation of eukaryotic genome replication. The MCM7 gene is mapped on 7q22.1. MCM7 plays a
pivotal role in the G1/S phase transition, orchestrating the correct assembly of replication forks on
chromosomal DNA and ensuring that all the genome is replicated once and not more than once at each
cell cycle. The MCM7 gene contains 15 exons. The miRNAs MIR106B, MIR93, and MIR25 are
clustered in a 5-prime to 3-prime orientation within intron 13. Petrocca et al. (2008) found
that MCM7 and the precursors of microRNAs (miRNAs) MIR106B, MIR93, and MIR25, all of which
arise from intron 13 of the MCM7gene, were overexpressed with almost perfect correlation in 5 of 10
human gastric tumors. |
References: |
1. Groth, A., Corpet, A., Cook, A. J. L., Roche, D., Bartek, J., Lukas, J., Almouzni, G. Regulation of
replication fork progression through histone supply and demand. Science 318: 1928-1931, 2007.
2. Nakatsuru, S., Sudo, K., Nakamura, Y. Isolation and mapping of a human gene (MCM2) encoding a
product homologous to yeast proteins involved in DNA replication.Cytogenet. Cell Genet. 68:
226-230, 1995.
3. Petrocca, F., Visone, R., Onelli, M. R., Shah, M. H., Nicoloso, M. S., de Martino, I., Iliopoulos, D.,
Pilozzi, E., Liu, C.-G., Negrini, M., Cavazzini, L., Volinia, S., Alder, H., Ruco, L. P., Baldassarre, G.,
Croce, C. M., Vecchione, A. E2F1-regulated microRNAs impair TGF-beta-dependent cell-cycle
arrest and apoptosis in gastric cancer. Cancer Cell 13: 272-286, 2008. |