Abstract
Trapoxin is a microbially derived cyclotetrapeptide that inhibits histone deacetylation in vivo and causes mammalian cells to arrest in the cell cycle. A trapoxin affinity matrix was used to isolate two nuclear proteins that copurified with histone deacetylase activity. Both proteins were identified by peptide microsequencing, and a complementary DNA encoding the histone deacetylase catalytic subunit (HD1) was cloned from a human Jurkat T cell library. As the predicted protein is very similar to the yeast transcriptional regulator Rpd3p, these results support a role for histone deacetylase as a key regulator of eukaryotic transcription.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Animals
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Anti-Bacterial Agents / metabolism
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Anti-Bacterial Agents / pharmacology
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Cattle
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Cell Cycle / drug effects
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Cloning, Molecular
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Enzyme Inhibitors / metabolism
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Enzyme Inhibitors / pharmacology
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Fungal Proteins / chemistry
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Fungal Proteins / genetics
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Fungal Proteins / metabolism*
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Gene Expression Regulation*
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Histone Deacetylase Inhibitors
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Histone Deacetylases / chemistry
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Histone Deacetylases / genetics
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Histone Deacetylases / isolation & purification
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Histone Deacetylases / metabolism*
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Humans
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Hydroxamic Acids / metabolism
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Hydroxamic Acids / pharmacology
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Molecular Sequence Data
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Molecular Weight
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Peptides*
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Saccharomyces cerevisiae
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Saccharomyces cerevisiae Proteins
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T-Lymphocytes / enzymology
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Transcription Factors / chemistry
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Transcription Factors / genetics
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Transcription Factors / isolation & purification
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Transcription Factors / metabolism*
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Transcription, Genetic*
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Tumor Cells, Cultured
Substances
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Anti-Bacterial Agents
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Enzyme Inhibitors
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Fungal Proteins
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Histone Deacetylase Inhibitors
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Hydroxamic Acids
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Peptides
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Saccharomyces cerevisiae Proteins
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Transcription Factors
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trapoxin A
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trichostatin A
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RPD3 protein, S cerevisiae
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Histone Deacetylases
Associated data
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GENBANK/D31480
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GENBANK/F07807
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GENBANK/U50079