The effects of glycine, TMAO and osmolyte mixtures on the pressure dependent enzymatic activity of α-chymotrypsin

Literature Information

Publication Date 2017-11-23
DOI 10.1039/C7CP06042D
Impact Factor 3.676
Authors

Michel W. Jaworek, Vitor Schuabb, Roland Winter


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Abstract

High pressure is an important feature of certain natural environments, such as the deep sea where pressures up to about 1000 bar are encountered. Further, pressure effects on biosystems are of increasing interest for biotechnological applications, such as baroenzymology. We studied the effect of two different natural osmolyte mixtures, with major components being glycine and trimethylamine-N-oxide (TMAO), on the activity of α-chymotrypsin, using high-pressure stopped-flow methodology in combination with fast UV/Vis detection. We show that pressure is not only able to drastically enhance the catalytic activity and efficiency of the enzyme, but also that glycine has a significant and diverse effect on the enzymatic activity and volumetric properties of the reaction compared to TMAO. The results might not only help to understand the modulation of enzymatic reactions by natural osmolytes, but also elucidate ways to optimize enzymatic processes in biotechnological applications.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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