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Enhanced top-down characterization of histone post-translational modifications
被引:2
|作者:
Tian, Zhixin
[1
,2
]
Tolic, Nikola
[1
]
Zhao, Rui
[1
]
Moore, Ronald J.
[3
]
Hengel, Shawna M.
[1
]
Robinson, Errol W.
[1
]
Stenoien, David L.
[3
]
Wu, Si
[1
]
Smith, Richard D.
[3
]
Pasa-Tolic, Ljiljana
[1
]
机构:
[1] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA
[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
[3] Pacific NW Natl Lab, Biol Sci Div, Richland, WA 99352 USA
关键词:
Saltless WCX-HILIC;
top-down;
histone;
posttranslational modification;
MASS-SPECTROMETRY;
LIQUID-CHROMATOGRAPHY;
H4;
ISOFORMS;
REPAIR;
DOMAIN;
CODE;
H3;
D O I:
10.1186/gb-2012-13-10-R86
中图分类号:
Q81 [生物工程学(生物技术)];
Q93 [微生物学];
学科分类号:
071005 ;
0836 ;
090102 ;
100705 ;
摘要:
Post-translational modifications (PTMs) of core histones work synergistically to fine tune chromatin structure and function, generating a so-called histone code that can be interpreted by a variety of chromatin interacting proteins. We report a novel online two-dimensional liquid chromatography-tandem mass spectrometry (2D LC-MS/MS) platform for high-throughput and sensitive characterization of histone PTMs at the intact protein level. The platform enables unambiguous identification of 708 histone isoforms from a single 2D LC-MS/MS analysis of 7.5 mu g purified core histones. The throughput and sensitivity of comprehensive histone modification characterization is dramatically improved compared with more traditional platforms.
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页数:9
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