Development of a Selective, Sensitive, and Reversible Biosensor by the Genetic Incorporation of a Metal-Binding Site into Green Fluorescent Protein

被引:58
作者
Ayyadurai, Niraikulam [1 ]
Prabhu, Nadarajan Saravanan [1 ]
Deepankumar, Kanagavel [1 ]
Lee, Sun-Gu [2 ]
Jeong, Heon-Ho [3 ]
Lee, Chang-Soo [3 ]
Yun, Hyungdon [1 ]
机构
[1] Yeungnam Univ, Sch Biotechnol, Gyongsan, South Korea
[2] Pusan Natl Univ, Dept Chem Engn, Pusan, South Korea
[3] Chungnam Natl Univ, Dept Chem Engn, Taejon, South Korea
关键词
biosensors; copper; fluorescence; genetic-code engineering; green fluorescent protein; AMINO-ACID; COPPER;
D O I
10.1002/anie.201008289
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
There when the light goes out: A copper biosensor was created by the introduction of the metal-chelating noncanonical amino acid L-DOPA in place of L-tyrosine into green fluorescent protein by genetic-code engineering (see picture). The specific binding of Cu2+ in vitro by the modified protein was reversible and resulted in fluorescence quenching in proportion to the amount of Cu2+ present. EDTA=ethylenediaminetetraacetic acid. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:6534 / 6537
页数:4
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