流离失所(心理学)
电子线路
反馈控制
合成生物学
计算机科学
化学
控制理论(社会学)
生物物理学
作者
Taylor H. Nguyen,Galen Dods,Mariana Gómez-Schiavon,Muziyue Wu,Zibo Chen,Ryan Kibler,David Baker,Hana El-Samad,Andrew H. Ng
出处
期刊:GEN biotechnology
[Mary Ann Liebert]
日期:2022-02-01
卷期号:1 (1): 91-100
标识
DOI:10.1089/genbio.2021.0011
摘要
Dynamic dimerization is a common regulatory interaction between biological molecules, underpinning many signaling functions. Because of its ubiquity, many biological engineering efforts have focused on building dimerizing proteins, such as the SYNZIPs and de novo Designed HeteroDimers (DHDs). Using the DHDs as a model system, we show that low-affinity protein interactions can be competitively displaced by a high-affinity “dominant negative” heterodimer. We demonstrate the utility of this signaling motif by using competitive displacement to implement negative feedback in a synthetic circuit. Competitive displacement could be extended to other heterodimer systems to expand the functionality of protein circuits and enable new biotechnology applications.
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