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Biochemical Thermodynamics
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Biochemical Thermodynamics

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Thermodynamics".

Deadline for manuscript submissions: closed (31 January 2021) | Viewed by 6440

Special Issue Editors

Prof. Stanley I. Sandler

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Guest Editor
Department of Chemical and Biomolecular Engineering Engineering, University of Delaware, Newark, DE 19716, USA
Interests: thermodynamics; statistical mechanics; computer simulations; biochemical thermodynamics
Dr. Robert N. Goldberg

E-Mail Website
Guest Editor
Scientist Emeritus, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
Interests: calorimetry; equilibrium measurements; electrolyte solutions; data evaluation; thermochemical network calculations; estimation methods; biochemical reactions

Special Issue Information

Dear Colleagues,

Advances in instrumentation and in methodology have led to substantial progress in biophysical measurements in a wide variety of biochemical and biological systems. Yet, each system has its distinct measurement issues that require careful attention in terms of experimental design, implementation, and data analysis in order to obtain accurate property values. These property values are of importance in a wide variety of applications, such as understanding binding phenomena, calculating optimal product yields, and understanding energy utilization in living systems. Moreover, the fact that the Gibbs energy, enthalpy, and entropy are state functions enables the calculation of many thermodynamic properties for substances where direct measurements have not been performed. This Special Issue will reflect the wide variety of experimental and theoretical methods that lead to thermodynamic properties of substances or systems of biochemical interest or that use thermodynamic property values to solve interesting problems.  One aim of this Special Issue is to highlight unsolved and important problems in the aforementioned areas.

Prof. Stanley I. Sandler
Dr. Robert N. Goldberg
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Entropy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use proper English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • binding
  • calorimetry
  • enthalpy
  • entropy
  • equilibrium
  • Gibbs energy
  • heat capacity
  • thermodynamics 

Published Papers (2 papers)

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Research

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23 pages, 3833 KiB  
Article
A Source of Systematic Errors in the Determination of Critical Micelle Concentration and Micellization Enthalpy by Graphical Methods in Isothermal Titration Calorimetry
by Mónica Corea, Rogelio Jiménez-Juárez, Gabriela Martínez-Mejía, María de Jesús Martínez-Ortiz and José Manuel del Río
Entropy 2021, 23(2), 236; https://doi.org/10.3390/e23020236 - 18 Feb 2021
Cited by 2 | Viewed by 2560
Abstract
Isothermal titration calorimetry is frequently employed to determine the critical micelle concentration and the micellization enthalpy of surfactants in terms of geometrical characteristics of the titration curves. Previously we have shown theoretically that even for an infinitesimal injection, the heat per titrant mol [...] Read more.
Isothermal titration calorimetry is frequently employed to determine the critical micelle concentration and the micellization enthalpy of surfactants in terms of geometrical characteristics of the titration curves. Previously we have shown theoretically that even for an infinitesimal injection, the heat per titrant mol depends on the stock solution concentration. In this work, we explore experimentally the influence of the stock solution concentration on the geometrical characteristics of the titration curve and its effect in determining the critical micelle concentration and the micellization enthalpy of surfactants. The systematic study of this phenomenology involves a great number of measurements at different temperatures with several repetitions carried out using a robotic calorimeter. As surfactant hexadecyltrimethylamonium bromide was used. The magnitude and shape of the heat titration depend on the stock solution concentration. As a consequence, the inflexion-point, break-point, and step-height decrease until a limiting value. A qualitative analysis suggests that the limiting value depends only on substance. This work shows that graphical methods could not be suitable for the calculation of the critical micelle concentration and micellization enthalpy because the magnitude and shape of the titration curve depend on the stock solution concentration. Micellar properties should be calculated by the application of theoretical models as in the ligand-binding studies. Full article
(This article belongs to the Special Issue Biochemical Thermodynamics)
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Review

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18 pages, 963 KiB  
Review
Nonequilibrium Thermodynamics in Biochemical Systems and Its Application
by Dongliang Zhang and Qi Ouyang
Entropy 2021, 23(3), 271; https://doi.org/10.3390/e23030271 - 25 Feb 2021
Cited by 5 | Viewed by 3306
Abstract
Living systems are open systems, where the laws of nonequilibrium thermodynamics play the important role. Therefore, studying living systems from a nonequilibrium thermodynamic aspect is interesting and useful. In this review, we briefly introduce the history and current development of nonequilibrium thermodynamics, especially [...] Read more.
Living systems are open systems, where the laws of nonequilibrium thermodynamics play the important role. Therefore, studying living systems from a nonequilibrium thermodynamic aspect is interesting and useful. In this review, we briefly introduce the history and current development of nonequilibrium thermodynamics, especially that in biochemical systems. We first introduce historically how people realized the importance to study biological systems in the thermodynamic point of view. We then introduce the development of stochastic thermodynamics, especially three landmarks: Jarzynski equality, Crooks’ fluctuation theorem and thermodynamic uncertainty relation. We also summarize the current theoretical framework for stochastic thermodynamics in biochemical reaction networks, especially the thermodynamic concepts and instruments at nonequilibrium steady state. Finally, we show two applications and research paradigms for thermodynamic study in biological systems. Full article
(This article belongs to the Special Issue Biochemical Thermodynamics)
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