开发ArgTag用于聚合的可扩展固体相合成
Vincent Freiburghaus1, Aliénor Jeandin1, Łukasz Frankiewicz2
1Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
ACS chemical biology
|October 23, 2025
概括
一个新的六氨酸标签 (ArgTag) 通过防止固相合成 (SPPS) 期间的聚合来简化合成. 这种方法提高了的纯度,并且在各种树脂和更大的尺度上有效.
科学领域:
- 生物化学 生物化学
- 有机化学 有机化学
- 化学生物学 化学生物学
背景情况:
- 固相合成 (SPPS) 被聚阻碍,导致效率和纯度降低.
- 以前的合成标签 (SynTag) 帮助化学蛋白质合成,但需要简化以更广泛地应用.
- 短,容易聚合的序列在SPPS中提出了独特的挑战.
研究的目的:
- 开发一种简化的六氨酸标签 (ArgTag) 用于在SPPS中抑制聚合.
- 为了完善酶性标签去除,以轻度和高效地切割.
- 为了证明ArgTag在各种树脂,载荷和尺度上的有效性.
主要方法:
- 开发一个简化的C端六氨酸标签 (ArgTag).
- 在温和的,无链接物条件下,使用Carboxypeptidase B精制酶去除.
- 使用自动化快速流动SPPS (AFPS) 对六种不同的固体支物 (树脂) 进行ArgTag的评估.
主要成果:
- 在所有测试的树脂类型中观察到一致的聚合抑制和改善的原始纯度.
- 在各种树脂极性和负载上,ArgTag证明了它的有效性.
- 通过经济的合成参数,成功地在更大规模上展示了ArgTag的效率.
结论:
- 该ArgTag策略有效地扩大了SynTag的适用于短,困难的序列的范围.
- 这种方法提供了一个可扩展的解决方案,以提高对具有挑战性的标的SPPS效率.
- 简化标签和酶去除提供了合成方法的实际进步.
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