TY - JOUR
T1 - Molecular characterization of propionyllysines in non-histone proteins
AU - Cheng, Zhongyi
AU - Tang, Yi
AU - Chen, Yue
AU - Kim, Sungchan
AU - Liu, Huadong
AU - Shawn, S. C.
AU - Gu, Wei
AU - Zhao, Yingming
PY - 2009/1
Y1 - 2009/1
N2 - Lysine propionylation and butyrylation are protein modifications that were recently identified in histones. The molecular components involved in the two protein modification pathways are unknown, hindering further functional studies. Here we report identification of the first three in vivo non-histone protein substrates of lysine propionylation in eukaryotic cells: p53, p3N, and CREB-binding protein. We used mass spectrometry to map lysine propionylation sites within these three proteins. We also identified the first two in vivo eukaryotic lysine propionyltransferases, p300 and CREB-binding protein, and the first eukaryotic depropionylase, Sirt1. p300 was able to perform autopropionylation on lysine residues in cells. Our results suggest that lysine propionylation, like lysine acetylation, is a dynamic and regulatory post-translational modification. Based on these observations, it appears that some enzymes are common to the lysine propionylation and lysine acetylation regulatory pathways. Our studies therefore identified first several important players in lysine propionylation pathway.
AB - Lysine propionylation and butyrylation are protein modifications that were recently identified in histones. The molecular components involved in the two protein modification pathways are unknown, hindering further functional studies. Here we report identification of the first three in vivo non-histone protein substrates of lysine propionylation in eukaryotic cells: p53, p3N, and CREB-binding protein. We used mass spectrometry to map lysine propionylation sites within these three proteins. We also identified the first two in vivo eukaryotic lysine propionyltransferases, p300 and CREB-binding protein, and the first eukaryotic depropionylase, Sirt1. p300 was able to perform autopropionylation on lysine residues in cells. Our results suggest that lysine propionylation, like lysine acetylation, is a dynamic and regulatory post-translational modification. Based on these observations, it appears that some enzymes are common to the lysine propionylation and lysine acetylation regulatory pathways. Our studies therefore identified first several important players in lysine propionylation pathway.
UR - http://www.scopus.com/inward/record.url?scp=59149086584&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=59149086584&partnerID=8YFLogxK
U2 - 10.1074/mcp.M800224-MCP200
DO - 10.1074/mcp.M800224-MCP200
M3 - Article
C2 - 18753126
AN - SCOPUS:59149086584
SN - 1535-9476
VL - 8
SP - 45
EP - 52
JO - Molecular and Cellular Proteomics
JF - Molecular and Cellular Proteomics
IS - 1
ER -