Cloning and characterization of centromeric DNA from Neurospora crassa.
AUTOR(ES)
Centola, M
RESUMO
The centromere locus from linkage group VII of Neurospora crassa has been cloned, characterized, and physically mapped. The centromeric DNA is contained within a 450-kb region that is recombination deficient, A+T-rich, and contains repetitive sequences. Repetitive sequences from within this region hybridize to a family of repeats located at or near centromeres in all seven linkage groups of N. crassa. Genomic Southern blots and sequence analysis of these repeats revealed a unique centromere structure containing a divergent family of centromere-specific repeats. The predominantly transitional differences between copies of the centromere-specific sequence repeats and their high A+T content suggest that their divergence was mediated by repeat-induced point (RIP) mutations.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=358506Documentos Relacionados
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