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Progress in Incorporation of Non-canonical Amino Acid Based on Archaeal Tyrosyl-tRNA Synthetase |
HUANG Huan-bang1,2,3,WU Yang1,2,3,YANG You-hui1,2,3,WANG Zhao-guan1,2,3,QI Hao1,2,3,*() |
1 School of Chemical Engineering and Technology, Tianjin 300072,China 2 Key Laboratory of Systems Bioengineering of Ministry of Education, Tianjin 300072,China 3 Syn Bio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072,China |
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Abstract The coding information used to build proteins exists in highly conserved codon table. In nature, organisms use 20 native amino acids to synthesize proteins of different lengths and orders to perform a variety of biological functions. In recent years, with the rapid development of synthetic biology, it is possible to controllably direct incorporation of non-canonical amino acids in protein synthesis. Non-canonical amino acids with functional side groups could extremely expand the structure and function of proteins, which could also be of benefit in the research of new synthetic biological tools and biological processes. The diversity of side chains serves in many fields, such as protein structure research, functional regulation, constructions of new bio-materials and bio-pharmaceutical industry development. This paper introduces the basic principle of the genetic codon expansion technology, and organizes the efficiency optimization strategies as well as new methods of constructing mutant library. In addition, it also summarizes the cutting-edge progress of the codon expansion technology in the field of bio-medicine. Finally, we summarize the current challenges faced by this technology, such as the limited number of available codons, the limited variety of orthogonal translation systems, and the low efficiency of multiple-incorporation of unnatural amino acids. We hope that these contents could help researchers establish suitable methods for the insertion of unnatural amino acids and promote the further development of this technology.
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Received: 26 April 2021
Published: 30 September 2021
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Corresponding Authors:
Hao QI
E-mail: haoq@tju.edu.cn
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