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Title: Insights into the Specificity of Lysine Acetyltransferases

Journal Article · · Journal of Biological Chemistry
 [1];  [2];  [2];  [2];  [1]
  1. Univ. of Georgia, Athens, GA (United States). Dept. of Microbiology
  2. Univ. of Wisconsin, Madison, WI (United States). Dept. of Biochemistry

Reversible lysine acetylation by protein acetyltransferases is a conserved regulatory mechanism that controls diverse cellular pathways. Gcn5-related N-acetyltransferases (GNATs), named after their founding member, are found in all domains of life. GNATs are known for their role as histone acetyltransferases, but non-histone bacterial protein acetytransferases have been identified. Only structures of GNAT complexes with short histone peptide substrates are available in databases. Given the biological importance of this modification and the abundance of lysine in polypeptides, how specificity is attained for larger protein substrates is central to understanding acetyl-lysine-regulated networks. In this paper, we report the structure of a GNAT in complex with a globular protein substrate solved to 1.9 Å. GNAT binds the protein substrate with extensive surface interactions distinct from those reported for GNAT-peptide complexes. Finally, our data reveal determinants needed for the recognition of a protein substrate and provide insight into the specificity of GNATs.

Research Organization:
Univ. of Georgia, Athens, GA (United States); Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Inst. of Health (NIH) (United States)
Grant/Contract Number:
AC02-06CH11357; GM062203; GM083987; T32-GM07215
OSTI ID:
1194221
Journal Information:
Journal of Biological Chemistry, Vol. 289, Issue 52; ISSN 0021-9258
Publisher:
American Society for Biochemistry and Molecular BiologyCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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