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Programmable Multiplexed Proteomics via Sequence-Encoded Mass Tagging

delete2026-02-16
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PRE
AI
X
Xinyi Sun
H
Haoni Yan
A
Aiting Wang
Y
Ying Zhang
江
江来 (Lai Jiang) *
丁显廷 封面图
丁显廷 (Xianting Ding) *
DOI:10.1021/acs.analchem.5c07550delete
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摘要

摘要

En 中文
等压标记通过实现多重定量已革新高通量蛋白质组学,但其对同位素编码的依赖对可扩展性、合成复杂性和成本构成了根本性限制。在此,我们介绍ePAS(通过序列排列的可扩展平台),一种新型无同位素标记策略,用序列定义的化学模块替代同位素元素。ePAS整合非规范氨基酸(ncAAs)和基于脯氨酸的裂解辅助基团,在MS/MS(MS2)裂解后生成序列特异性报告子。该设计使一种多重化平台得以实现,其理论容量随ncAA数量呈组合式增长。作为概念验证,我们设计和合成了一个三重ePAS标签集,并在复杂生物样品(包括标准肽段、大肠杆菌(E. coli)和金黄色葡萄球菌(S. aureus)裂解物)中展示了其稳健性能─实现高标记效率(>90%)、准确定量(比例误差<20%)和宽动态范围。我们的工作确立了ePAS作为一种通用、合成友好且可编程的平台,克服了同位素标签的固有局限性,为临床和单细胞应用中的超高通量蛋白质组学开辟了新途径。
Keyword:
Bacteria
Labeling
Peptides and proteins
Protein identification
Proteomics

期刊

Analytical Chemistry 封面图
Analytical Chemistry
IF:
6.7
论文数:
4.7W
被引数:
15.9W

机构

S
Shanghai Jiao Tong University
学者数:
7.8K
论文数: 2.4K
被引数: 14.8W
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