Lysine Possesses the Optimal Chain Length for Histone Lysine Methyltransferase Catalysis
Journal Article
·
· Scientific Reports
- Radboud Univ., Nijmegen, (The Netherlands). Inst. for Molecules and Materials; DOE/OSTI
- Radboud Univ., Nijmegen, (The Netherlands). Inst. for Molecules and Materials
- Univ. of Tennessee, Knoxville, (United States). Department of Biochemistry and Cellular and Molecular Biology; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). UT/ORNL Center for Molecular Biophysics
- Shandong Agricultural Univ., Taian (China)
Histone lysine methyltransferases (KMTs) represent an important class of epigenetic enzymes that play essential roles in regulation of gene expression in humans. Members of the KMT family catalyze the transfer of the methyl group from S-adenosylmethionine (SAM) to lysine residues in histone tails and core histones. Here we report combined MALDI-TOF MS experiments, NMR analyses and quantum mechanical/molecular dynamics studies on human KMT-catalyzed methylation of the most related shorter and longer lysine analogues, namely ornithine and homolysine, in model histone peptides. Our experimental work demonstrates that while lysine is an excellent natural substrate for KMTs, ornithine and homolysine are not. This study reveals that ornithine does not undergo KMT-catalyzed methylation reactions, whereas homolysine can be methylated by representative examples of human KMTs. The results demonstrate that the specificity of KMTs is highly sensitive to the side chain length of the residue to be methylated. The origin for the degree of the observed activities of KMTs on ornithine and homolysine is discussed.
- Research Organization:
- Oak Ridge National Lab (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- China Scholarship Council; National Natural Science Foundation of China; National Science Foundation (NSF); Natural Science Foundation of Shandong Province; Netherlands Organization for Scientific Research; USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1624363
- Journal Information:
- Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
SET7/9 Catalytic Mutants Reveal the Role of Active Site Water Molecules in Lysine Multiple Methylation
Structural Biology of Human H3K9 Methyltransferases
S-adenosyl methionine is necessary for inhibition of the methyltransferase G9a by the lysine 9 to methionine mutation on histone H3
Journal Article
·
Sun Nov 14 23:00:00 EST 2010
· J. Biol. Chem.
·
OSTI ID:1002881
Structural Biology of Human H3K9 Methyltransferases
Journal Article
·
Thu Dec 31 23:00:00 EST 2009
· PLoS One
·
OSTI ID:1019599
S-adenosyl methionine is necessary for inhibition of the methyltransferase G9a by the lysine 9 to methionine mutation on histone H3
Journal Article
·
Sun May 15 20:00:00 EDT 2016
· Proceedings of the National Academy of Sciences of the United States of America
·
OSTI ID:1258671