期刊
MOLECULAR & CELLULAR PROTEOMICS
卷 15, 期 7, 页码 2476-2490出版社
ELSEVIER
DOI: 10.1074/mcp.O115.055467
关键词
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资金
- Wellcome Trust [083524/Z/07/Z, 097945/B/11/Z, 073980/Z/03/Z, 08136/Z/03/Z, 0909444/Z/09/Z, 090944/Z/09/Z, 097045/B/11/Z]
- Wellcome Trust [083524/Z/07/Z, 090944/Z/09/Z] Funding Source: Wellcome Trust
We present a methodology using in vivo crosslinking combined with HPLC-MS for the global analysis of endogenous protein complexes by protein correlation profiling. Formaldehyde crosslinked protein complexes were extracted with high yield using denaturing buffers that maintained complex solubility during chromatographic separation. We show this efficiently detects both integral membrane and membrane-associated protein complexes, in addition to soluble complexes, allowing identification and analysis of complexes not accessible in native extracts. We compare the protein complexes detected by HPLC-MS protein correlation profiling in both native and formaldehyde crosslinked U2OS cell extracts. These proteome-wide data sets of both in vivo crosslinked and native protein complexes from U2OS cells are freely available via a searchable online database (www.peptracker. com/epd). Raw data are also available via Proteome-Xchange (identifier PXD003754).
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