Cloning and characterization of the catalytic subunit of human histone acetyltransferase, Hat1

Hyo Young Chung, Na Young Suh, Jong B. Yoon

Research output: Contribution to journalArticle

Abstract

Acetylation of lysine residues within the amino-terminal domains of the core histones plays a critical role in chromatin assembly as well as in regulation of gene expression. To study the biochemical function of histone acetylation, we have cloned a cDNA encoding the catalytic subunit of human histone acetyltransferase, Hat1. Analysis of the predicted amino acid sequence of human Hat1 revealed an open reading frame of 419 amino acids with a calculated molecular mass of 49.5 RDa and an isoelectric point of 5.5. The amino acid sequence of human Hat1 is homologous to those of known and putative Hat1 proteins from various species throughout the entire open reading frame. The recombinant human Hat1 protein expressed in bacteria possesses histone H4 acetyltransferase activity in vitro. Both RbAp46 and RbAp48, which participate in various processes of histone metabolism, enhance the histone acetyltransferase activity of the recombinant human Hat1, indicating that they are both able to functionally interact with the human Hat1 in vitro.

Original languageEnglish
Pages (from-to)484-491
Number of pages8
JournalJournal of Biochemistry and Molecular Biology
Volume31
Issue number5
Publication statusPublished - 1998 Sep 30

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Histone Acetyltransferases
Cloning
Histones
Organism Cloning
Catalytic Domain
Acetylation
Amino Acids
Open Reading Frames
Acetyltransferases
Molecular mass
Metabolism
Gene expression
Chromatin Assembly and Disassembly
Lysine
Chromatin
Protein Sequence Analysis
Isoelectric Point
Gene Expression Regulation
Bacteria
Proteins

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

Cite this

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abstract = "Acetylation of lysine residues within the amino-terminal domains of the core histones plays a critical role in chromatin assembly as well as in regulation of gene expression. To study the biochemical function of histone acetylation, we have cloned a cDNA encoding the catalytic subunit of human histone acetyltransferase, Hat1. Analysis of the predicted amino acid sequence of human Hat1 revealed an open reading frame of 419 amino acids with a calculated molecular mass of 49.5 RDa and an isoelectric point of 5.5. The amino acid sequence of human Hat1 is homologous to those of known and putative Hat1 proteins from various species throughout the entire open reading frame. The recombinant human Hat1 protein expressed in bacteria possesses histone H4 acetyltransferase activity in vitro. Both RbAp46 and RbAp48, which participate in various processes of histone metabolism, enhance the histone acetyltransferase activity of the recombinant human Hat1, indicating that they are both able to functionally interact with the human Hat1 in vitro.",
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Cloning and characterization of the catalytic subunit of human histone acetyltransferase, Hat1. / Chung, Hyo Young; Suh, Na Young; Yoon, Jong B.

In: Journal of Biochemistry and Molecular Biology, Vol. 31, No. 5, 30.09.1998, p. 484-491.

Research output: Contribution to journalArticle

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