Analysis of the proteolysis of bioactive peptides using a peptidomics approach.
Analysis of the proteolysis of bioactive peptides using a peptidomics approach.
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使用肽学方法分析生物活性肽的蛋白水解。
DOI:
10.1038/nprot.2013.104
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发表时间:
2013-09
期刊:
影响因子:
14.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Identifying the peptidases that inactivate bioactive peptides (e.g. peptide hormones and neuropeptides) in mammals is an important unmet challenge. This protocol describes a recent approach that combines liquid chromatography-mass spectrometry peptidomics to identify endogenous cleavage sites of a bioactive peptide, the subsequent biochemical purification of a candidate peptidase based on these cleavage sites, and validation of the candidate peptidase’s role in the physiological regulation of the bioactive peptide by examining a peptidase knockout mouse. We highlight successful application of this protocol to discover that insulin-degrading enzyme (IDE) regulates physiological calcitonin gene-related peptide (CGRP) levels and detail the key stages and steps in this approach. This protocol requires 7 days of work; however, the total time for this protocol is highly variable because of its dependence on the availability of biological reagents, namely purified enzymes and knockout mice. The protocol is valuable because it expedites the characterization of mammalian peptidases, such as IDE, which in certain instances can be used to develop novel therapeutics.
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DOI:
10.1073/pnas.69.12.3698
发表时间:
1972-01-01
影响因子:
11.1
作者:
DUCKWORT.WC;HEINEMAN.MA;KITABCHI, AE
通讯作者:
KITABCHI, AE
影响因子:
9.9
作者:
Ho, T. W.;Mannix, L. K.;Rapoport, A. M.
通讯作者:
Rapoport, A. M.
影响因子:
14.8
作者:
Coin, Irene;Beyermann, Michael;Bienert, Michael
通讯作者:
Bienert, Michael
DOI:
10.1073/pnas.0230450100
发表时间:
2003-04-01
影响因子:
11.1
作者:
Farris, W;Mansourian, S;Guénette, S
通讯作者:
Guénette, S
影响因子:
4.4
作者:
Alvarez-Manilla, G;Atwood, J;Pierce, M
通讯作者:
Pierce, M