Abstract

Direct, site-specific methods of protein functionalization are highly desirable for biotechnology. However, such methods are challenging due to the difficulty of chemically differentiating a single site within a large protein. Herein, we propose “metal binding targeting” strategy and develop a Copper Assisted Sequence-specific conjugation Tag (CAST) method to achieve rapid (second order rate 8.1 M−1 s−1), site-specific protein backbone chemical modification with pinpoint accuracy. We demonstrate the versatility of CAST conjugation by preparing various on-demand modified recombinant proteins, including a homogeneous antibody-drug conjugate with high plasma stability and potent efficacy in vitro and in vivo. Thus, CAST provides an efficient and quantitative method to site-specifically attach payloads on large, native proteins.

Direct, site-specific methods of protein functionalization are of interest, but challenging due to difficulty in chemically differentiating a single site within a large protein. Here, the authors develop a Copper Assisted Sequence-specific conjugation Tag (CAST) method to achieve rapid, site-specific protein backbone chemical modification with pinpoint accuracy, and prepare various on-demand modified recombinant proteins using CAST.

Details

Title
Copper assisted sequence-specific chemical protein conjugation at a single backbone amide
Author
Guo, Mengzhun 1 ; Zhao, Kai 2   VIAFID ORCID Logo  ; Guo, Liang 2 ; Zhou, Rui 3   VIAFID ORCID Logo  ; He, Qiuju 2 ; Lu, Kuan 2 ; Li, Tian 2 ; Liu, Dandan 4 ; Chen, Jinfeng 2 ; Tang, Jing 2 ; Fu, Xin 2 ; Zhou, Jinyun 3 ; Zheng, Bei 2 ; Mann, Samuel I. 5 ; Zhang, Yongdeng 2   VIAFID ORCID Logo  ; Huang, Jing 2   VIAFID ORCID Logo  ; Yang, Bing 4   VIAFID ORCID Logo  ; Zhou, Ting 2   VIAFID ORCID Logo  ; Lei, Yingjie 2 ; Dang, Bobo 1   VIAFID ORCID Logo 

 Fudan University, Shanghai, China (GRID:grid.8547.e) (ISNI:0000 0001 0125 2443); Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China (GRID:grid.494629.4) (ISNI:0000 0004 8008 9315); Westlake University, Research Center for Industries of the Future and Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Hangzhou, China (GRID:grid.494629.4) (ISNI:0000 0004 8008 9315); Westlake Institute for Advanced Study, Institute of Biology, Hangzhou, China (GRID:grid.494629.4) (ISNI:0000 0004 8008 9315) 
 Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China (GRID:grid.494629.4) (ISNI:0000 0004 8008 9315); Westlake University, Research Center for Industries of the Future and Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Hangzhou, China (GRID:grid.494629.4) (ISNI:0000 0004 8008 9315); Westlake Institute for Advanced Study, Institute of Biology, Hangzhou, China (GRID:grid.494629.4) (ISNI:0000 0004 8008 9315) 
 The Second Affiliated Hospital of Zhejiang University School of Medicine, Department of Nuclear Medicine and Positron Emission Tomography Center, Hangzhou, China (GRID:grid.412465.0) 
 Zhejiang University, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Hangzhou, China (GRID:grid.13402.34) (ISNI:0000 0004 1759 700X) 
 University of California at San Francisco, Department of Pharmaceutical Chemistry and the Cardiovascular Research Institute, San Francisco, USA (GRID:grid.266102.1) (ISNI:0000 0001 2297 6811) 
Pages
8063
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2898165201
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.