Peptidase substrates via global peptide profiling.

Peptidase substrates via global peptide profiling.
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DOI:
10.1038/nchembio.126
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发表时间:
2009-01
影响因子:
14.8
通讯作者:
Saghatelian, Alan
Saghatelian, Alan
中科院分区:
生物学1区
文献类型:
--
作者:
Tagore, Debarati M.;Nolte, Whitney M.;Neveu, John M.;Rangel, Roberto;Guzman-Rojas, Liliana;Pasqualini, Renata;Arap, Wadih;Lane, William S.;Saghatelian, Alan

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肽代谢是一个涉及许多蛋白质协同工作的复杂过程。缺乏二肽基肽酶4(DPP4)的小鼠的基于质谱(MS)的全局肽谱分析鉴定了内源性DPP4底物,并揭示了脯氨酸肽催化过程中一种未识别的途径,该途径将氨肽酶和DPP4活性联系起来。总之,这些研究阐明了DPP 4调节代谢的具体方面,更一般地说,突出了全局肽谱用于研究体内肽代谢的实用性。
Peptide metabolism is a complex process involving many proteins working in concert. Mass spectrometry (MS)-based global peptide profiling of mice lacking dipeptidyl peptidase 4 (DPP4) identified endogenous DPP4 substrates and revealed an unrecognized pathway during proline peptide catabolism that interlinks aminopeptidase and DPP4 activities. Together, these studies elucidate specific aspects of DPP4-regulated metabolism and, more generally, highlight the utility of global peptide profiling for studying peptide metabolism in vivo.
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