Trimethylated lysine 9 of histone H3 is a mark for DNA methylation in Neurospora crassa

Tamaru, H., Zhang, X., McMillen, D., Singh, P. B., Nakayama, J., Grewal, S. I., Allis, C. D., Cheng, X. D., Selker, E. U. (2003) Trimethylated lysine 9 of histone H3 is a mark for DNA methylation in Neurospora crassa. Nature Genetics, 34 (1). pp. 75-79. ISSN 1061-4036

URL: http://www.ncbi.nlm.nih.gov/pubmed/12679815
DOI: 10.1038/ng1143

Abstract

Besides serving to package nuclear DNA, histones carry information in the form of a diverse array of post-translational modifications. Methylation of histones H3 and H4 has been implicated in long-term epigenetic 'memory'(1). Dimethylation or trimethylation of Lys4 of histone H3 (H3 Lys4) has been found in expressible euchromatin of yeasts and mammals(2-4). In contrast, methylation of Lys9 of histone H3 (H3 Lys9) has been implicated in establishing and maintaining the largely quiescent heterochromatin of mammals, yeasts, Drosophila melanogaster and plants". we have previously shown that a DNA methylation mutant of Neurospora crassa, dim-5 (defective in methylation), has a nonsense mutation in the SET domain of an H3-specific histone methyltransferase and that substitutions of H3 Lys9 cause gross hypomethylation of DNA(10). Similarly, the KRYPTONITE histone methyltransferase is required for full DNA methylation in Arabidopsis thaliana(11). We used biochemical, genetic and immunological methods to investigate the specific mark for DNA methylation in N. crassa. Here we show that trimethylated H3 Lys9, but not dimethylated H3 Lys9, marks chromatin regions for cytosine methylation and that DIM-5 specifically creates this mark.

Item Type: Paper
Uncontrolled Keywords: INDUCED POINT MUTATION METHYLTRANSFERASE ACTIVITY PROTEIN DOMAIN PATTERNS HP1 HETEROCHROMATIN CHROMOSOME ENHANCER GENES
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > DNA methylation
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > histone
CSHL Authors:
Communities: CSHL labs > Grewal lab
Depositing User: Matt Covey
Date Deposited: 28 Jun 2013 19:16
Last Modified: 28 Jun 2013 19:16
Related URLs:
URI: http://repository.cshl.edu/id/eprint/27913

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