The transpeptidation reaction catalyzed by bacterial sortases continues to see increasing use in the construction of novel protein derivatives. In addition to growth in the number of applications that rely on sortase, this field has also seen methodology improvements that enhance reaction performance and scope. In this opinion, we present an overview of key developments in the practice and implementation of sortase-based strategies, including applications relevant to structural biology. Topics include the use of engineered sortases to increase reaction rates, the use of redesigned acyl donors and acceptors to mitigate reaction reversibility, and strategies for expanding the range of substrates that are compatible with a sortase-based approach.
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http://dx.doi.org/10.1016/j.sbi.2016.05.021 | DOI Listing |
Anal Chem
November 2018
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University, Jinan 250014 , China.
The sortase-catalyzed coupling reaction is an efficient strategy to incorporate chemically defined modifications into proteins of interest. Despite its widespread applications in protein chemistry, the conventional bulk fluorescence measurement is not sufficient to characterize sortase due to the fluorescence inner filter effect-induced self-quenching. Herein, we develop a new method to visualize and quantify sortase A (SrtA) activity at the single-molecule level by using transpeptidation-directed intramolecular Förster resonance energy transfer (FRET).
View Article and Find Full Text PDFCurr Opin Struct Biol
June 2016
Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA 02142, USA. Electronic address:
The transpeptidation reaction catalyzed by bacterial sortases continues to see increasing use in the construction of novel protein derivatives. In addition to growth in the number of applications that rely on sortase, this field has also seen methodology improvements that enhance reaction performance and scope. In this opinion, we present an overview of key developments in the practice and implementation of sortase-based strategies, including applications relevant to structural biology.
View Article and Find Full Text PDFSheng Wu Gong Cheng Xue Bao
April 2016
Department of Bioengineering and Biotechnology, Huaqiao University, Xiamen 361021, Fujian, China.
Proteins, which exist mainly in linear form in vivo, are easily affected by the change of ambient temperature and pH. The application of proteins (enzymes) in the fields of industrial catalyzing, food manufacturing and medicine are restricted due to their properties. The cyclic structure of natural cyclic peptides confers high thermal stability on itself; such mechanism can be referred to in further enhancement of the thermal stability and transformation of the structure of enzymes.
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