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Science China Life Sciences

, Volume 54, Issue 1, pp 54–59

First Online: 21 January 2011Received: 13 May 2010Accepted: 17 August 2010

Abstract

In proteomics, attention has focused on various immobilized enzyme reactors IMERs for the realization of high throughput digestion. In this report, a novel organic-inorganic hybrid monolith based IMER was prepared in a 100 μm i.d. capillary with 3-glycidoxypropyltrimethoxysilane GLYMO as the monomer and tetraethoxysilane TEOS as the crosslinker. Trypsin immobilization was achieved via the reaction between vicinal diol groups, which were obtained from hydrolysis of epoxy groups, and the amino groups of trypsin. Bovine serum albumin was digested thoroughly by this IMER in 47 s. After micro-reverse phase liquid chromatography-tandem mass spectrometry μRPLC-MS-MS analysis and database searching, beyond 35% sequence coverage was obtained, and the result was comparable to that of 12 h in solution digestion. The present IMER has potential for high throughput digestion.

Keywordsimmobilized enzyme reactor organic-inorganic hybrid monolith protein identification HPLC-MS-MS This article is published with open access at Springerlink.com

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Autor: ShuaiBin Wu - JunFeng Ma - KaiGuang Yang - JinXiang Liu - Zhen Liang - LiHua Zhang - YuKui Zhang

Fuente: https://link.springer.com/article/10.1007/s11427-010-4108-z







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