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Search Publications by: Robert N Goldberg (Assoc)

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Displaying 26 - 50 of 91

Thermodynamics of the Hydrolysis Reactions of Nitriles

July 1, 2005
Author(s)
Yadu D. Tewari, Robert N. Goldberg
Microcalorimetry and high-performance liquid chromatography (h.p.l.c) have been used to conduct a thermodynamic investigation of the following nitrilase catalyzed reactions: (1) benzonitrile(aq) + 2 H2O(l) = benzoic acid(aq) + ammonia(aq), (2)

Saturation Molalities and Standard Molar Enthalpies of Solution of Cytidine(cr), Hypoxanthine(cr), Thymidine(cr), Thymine(cr), Uridine(cr), and Xanthine(cr) in H 2 O(1)

July 1, 2004
Author(s)
Yadu D. Tewari, Patrick D. Gery, Mark D. Vaudin, Alan D. Mighell, R Klein, Robert N. Goldberg
Saturation molalities, m(sat) in H 0(I) have been measure for the substances cytidine(cr), hypoxanthine(cr), thymidine(cr), thymine(cr), uridine(cr), and xanthine(cr) by using h.p.l.c. The states of hydration were established by performing Karl-Fischer

Thermodynamics of the Hydrolysis Reactions of Adenosine 3', 5'-(Cyclic)phosphate(aq) and Phosphoenolpyruvate(aq); the Standard Molar Formation Properties of 3',5'-(Cyclic)Phosphate(aq) and Phosphoenolpyruvate(aq)

November 1, 2003
Author(s)
Robert N. Goldberg, Yadu D. Tewari
Molar calorimetric enthalpy changes DrHm(cal) have been measured for the biochemical reactions1 {ATP(aq) = cAMP(aq) + pyrophosphate(aq)} and {cAMP(aq) + H2O(l) = AMP(aq)}. The reactions were catalyzed, respectively, by adenosine 3',5'-(cyclic)phosphate and

Thermodynamics of Enzyme-Catalyzed Reactions

March 1, 2003
Author(s)
Robert N. Goldberg, Yadu D. Tewari
This review, which has been prepared for the McGraw-Hill 2003 Yearbook of Science and Technology, gives an overview of the thermodynamics of enzyme-catalyzed reactions. Topics include the thermodynamic formalism(s) used in this field, computational methods

Thermodynamic Quantities for the Ionization Reactions of Buffers in Water

December 1, 2002
Author(s)
Robert N. Goldberg, N Kishore, R M. Lennen
This table contains selected values for the pK, standard molar enthalpy of reaction {Δ} rH , and standard molar heat-capacity change {Δ} rC p for the ionization reactions of 64 buffers many of which are relevant to biochemistry and to biology. The values

A Thermodynamic Study of the Reactions: 2-Dehydro-3Deoxy-D-Arabino-Heptanoate 7-Phosphate(aq) = {3-Dehydroquinate (ag) + Phosphate (aq)} and {3-Dehydroquinate(aq) =3-Dehydroshikimate(aq) + H 2 O(l)}

October 1, 2002
Author(s)
Yadu D. Tewari, Robert N. Goldberg, A R. Hawkins, H K. Lamb
Microcalorimetry and high-performance liquid chromatography (h.p.l.c.) have been used to conduct a thermodynamic investigation of reactions catalyzed by 3-dehydroquinate synthase and by 3-dehydroquinate dehydratase. These are the second and third reactions

Thermodynamic Quantities for the Ionization Reactions of Buffers

June 1, 2002
Author(s)
Robert N. Goldberg, N Kishore, R M. Lennen
This review contains selected values of thermodynamic quantities for the aqueous ionization reactions of 63 buffers, many of which are used in biological research. Since the aim is to be able to predict values of the ionization constant at temperatures not

Thermodynamics of Reactions Catalyzed by PABA Synthase

April 10, 2002
Author(s)
Yadu D. Tewari, P Y. Jensen, N Kishore, M P. Mayhew, J F. Parsons, Edward Eisenstein, Robert N. Goldberg
Microcalorimetry and high performance liquid chromatography (HPLC) have been used to conduct a thermodynamic investigation of reactions catalyzed by PABA synthase, the enzyme located at the first step in the shikimic acid metabolic pathway leading from

Thermochemistry of the Reaction {Phosphoenolpyruvate(aq) + D-Erythrose 4-Phosphate(aq) + H 2 O(1) = 2-Dehydro-3-Deoxy-D-Arabino-Heptonate 7-Phosphate(aq) + Phosphate(aq)}

December 1, 2001
Author(s)
Yadu D. Tewari, N Kishore, R H. Bauerle, W R. LaCourse, Robert N. Goldberg
Microcalorimetry and high-performance liquid chromatography (h.p.l.c.) have been used to conduct a thermodynamic investigation of the biochemical reaction {phosphoenolpyruvate(aq) + D-erythrose 4-phosphate(aq) + H 2O(l) = 2-dehydro-3-deoxy-D-arabino

Use of Legendre Transforms in Chemical Thermodynamics

November 1, 2001
Author(s)
R Alberty, J M. Barthel, E R. Cohen, Michael B. Ewing, Robert N. Goldberg, E Wilhelm
The fundamental equation of thermodynamics for the internal energy U may include terms for various types of work and involves only differentials of extensive variables. The fundamental equation for U yields intensive variables as partial derivatives of the

Thermochemistry of Adenosine

August 1, 2001
Author(s)
J A. Boerio-Goates, M R. Francis, Robert N. Goldberg, M A. Ribeiro da Silva, M D. Ribeiro da Silva, Yadu D. Tewari
The thermochemistry of adenosine(cr) was studied by a variety of methods: the standard (pressure p = 0.1 MPa) molar enthalpy of combustion in oxygen at T = 298.15 K was measured by means of combustion calorimetry and was found to be Δ} cH m = -(5139.4 3.3)

Thermodynamics of Reactions Catalyzed by Branched-Chain-Amino-Acid Transaminase

October 1, 2000
Author(s)
Yadu D. Tewari, Robert N. Goldberg, J D. Rozzell
Apparent equilibrium constants and calorimetric enthalpies of reaction have been measured for reactions catalyzed by branched-chain-amino-acid transaminase. The following biochemical reactions have been studied at the temperature 298.15 K and in the pH

A Thermodynamic Study of the Conversion of Chorismate to Isochorismate

August 1, 2000
Author(s)
Yadu D. Tewari, A M. Davis, Prasad T. Reddy, Robert N. Goldberg
Microcalorimetry and high performance liquid chromatography were used to conduct a thermodynamic investigation of the biochemical reaction chorismate(aq) = isochorismate(aq). this reaction occurs at the branch point of the chorismate metabolic pathway that

Thermodynamics of Reactions Catalyzed by Anthranilate Synthase

February 14, 2000
Author(s)
W M. Byrnes, Robert N. Goldberg, Marcia J. Holden, M P. Mayhew, Yadu D. Tewari
Microcalorimetry and high performance liquid chromatography have been used to conduct a thermodynamic investigation of reactions catalyzed by anthranilate synthase, the enzyme located at the branch point in the chorismate biosynthetic pathway that leads to

A to Z of Thermodynamics

January 1, 2000
Author(s)
Robert N. Goldberg
This is a book review of A to Z of Thermodynamics, by P. Perrot.