Mass spectrometric analysis of asparagine deamidation and aspartate isomerization in polypeptides.
Mass spectrometric analysis of asparagine deamidation and aspartate isomerization in polypeptides.
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DOI:
10.1002/elps.201000027
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发表时间:
2010-06
期刊:
影响因子:
2.9
通讯作者:
Zubarev, Roman A.
中科院分区:
文献类型:
--
作者:
Yang, Hongqian;Zubarev, Roman A.
One of the most frequent modifications in proteins and peptides is the deamidation of asparagine, a spontaneous non-enzymatic reaction leading to a mixture of ***L,D-succinimidyl, L,D-aspartyl, and L,D-isoaspartyl forms, with L-isoaspartyl dominating. Spontaneous isomerization of L-Asp yields the same products. In vivo, these unusual forms of aspartate are repaired by the PIMT enzyme, with the balance between isomerization and repair affecting the organism physiology. Mass spectrometric analysis of this balance involves isomer separation, iso-Asp/Asp quantification and iso-Asp site identification. This review highlights the issues associated with these steps and discusses the prospects of high-throughput iso-Asp analysis.
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影响因子:
8
作者:
Cournoyer, JJ;Pittman, JL;O'Connor, PB
通讯作者:
O'Connor, PB
影响因子:
4.8
作者:
Moss, CX;Matthews, SP;Watts, C
通讯作者:
Watts, C
DOI:
10.1111/j.1399-3011.2004.00151.x
发表时间:
2004-05-01
期刊:
JOURNAL OF PEPTIDE RESEARCH
影响因子:
--
作者:
Robinson, NE;Robinson, ZW;Robinson, AB
通讯作者:
Robinson, AB
DOI:
10.1073/pnas.221463198
发表时间:
2001-10-23
影响因子:
11.1
作者:
Robinson, NE;Robinson, AB
通讯作者:
Robinson, AB
影响因子:
2.9
作者:
Ren, Da;Pipes, Gary D.;Bondarenko, Pavel V.
通讯作者:
Bondarenko, Pavel V.