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Literature DB >> 2248999

Michaelis-Menten equation for an enzyme in an oscillating electric field.

Abstract

The electric charges on an enzyme may move concomitantly with a conformational change. Such an enzyme will absorb energy from an oscillating electric field. If in addition the enzyme has a larger association constant for substrate than for product, as is often true, it can use this energy to drive the catalyzed reaction away from equilibrium. Approximate analytical expressions are given for the field-driven flux, electrical power absorbed, free-energy produced per unit time, thermodynamic efficiency, and zero-flux concentrations. The field-driven flux is written as a generalized Michaelis-Menten equation.

Mesh：

Substances：
Enzymes

Year: 1990 PMID： 2248999 PMCID： PMC1281042 DOI： 10.1016/S0006-3495(90)82441-3

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

12 in total

1. The response of living cells to very weak electric fields: the thermal noise limit.

Authors: J C Weaver; R D Astumian
Journal: Science Date: 1990-01-26 Impact factor: 47.728

Review 2. Electrical modulation of membrane proteins: enforced conformational oscillations and biological energy and signal transductions.

Authors: T Y Tsong
Journal: Annu Rev Biophys Biophys Chem Date: 1990

3. Activation of Na+ and K+ pumping modes of (Na,K)-ATPase by an oscillating electric field.

Authors: D S Liu; R D Astumian; T Y Tsong
Journal: J Biol Chem Date: 1990-05-05 Impact factor: 5.157

4. Evolutionary optimization of the catalytic effectiveness of an enzyme.

Authors: J J Burbaum; R T Raines; W J Albery; J R Knowles
Journal: Biochemistry Date: 1989-11-28 Impact factor: 3.162

5. Utilization of binding energy and coupling rules for active transport and other coupled vectorial processes.

Authors: W P Jencks
Journal: Methods Enzymol Date: 1989 Impact factor: 1.600

6. Kinetics of a multistate enzyme in a large oscillating field.

Authors: B Robertson; R D Astumian
Journal: Biophys J Date: 1990-04 Impact factor: 4.033

7. How enzymes can capture and transmit free energy from an oscillating electric field.

Authors: H V Westerhoff; T Y Tsong; P B Chock; Y D Chen; R D Astumian
Journal: Proc Natl Acad Sci U S A Date: 1986-07 Impact factor: 11.205

8. Energetics of proline racemase: racemization of unlabeled proline in the unsaturated, saturated, and oversaturated regimes.

Authors: L M Fisher; W J Albery; J R Knowles
Journal: Biochemistry Date: 1986-05-06 Impact factor: 3.162

Review 9. Electroconformational coupling: how membrane-bound ATPase transduces energy from dynamic electric fields.

Authors: T Y Tsong; R D Astumian
Journal: Annu Rev Physiol Date: 1988 Impact factor: 19.318

10. Activation of electrogenic Rb+ transport of (Na,K)-ATPase by an electric field.

Authors: E H Serpersu; T Y Tsong
Journal: J Biol Chem Date: 1984-06-10 Impact factor: 5.157

10 in total

1. Correlated conformational fluctuations during enzymatic catalysis: Implications for catalytic rate enhancement.

Authors: K O Alper; M Singla; J L Stone; C K Bagdassarian
Journal: Protein Sci Date: 2001-07 Impact factor: 6.725

Review 2. Ion channel enzyme in an oscillating electric field.

Authors: V S Markin; D Liu; J Gimsa; R Strobel; M D Rosenberg; T Y Tsong
Journal: J Membr Biol Date: 1992-03 Impact factor: 1.843

3. Harmonic system analysis of the algae Valonia utricularis: contribution of an electrogenic transport system to gain and phase-shift of the transfer function.

Authors: J Wang; G Wehner; R Benz; U Zimmermann
Journal: Biophys J Date: 1993-06 Impact factor: 4.033

Michaelis-Menten equation for an enzyme in an oscillating electric field.

1. The response of living cells to very weak electric fields: the thermal noise limit.

Review 2. Electrical modulation of membrane proteins: enforced conformational oscillations and biological energy and signal transductions.

3. Activation of Na+ and K+ pumping modes of (Na,K)-ATPase by an oscillating electric field.

4. Evolutionary optimization of the catalytic effectiveness of an enzyme.

5. Utilization of binding energy and coupling rules for active transport and other coupled vectorial processes.

6. Kinetics of a multistate enzyme in a large oscillating field.

7. How enzymes can capture and transmit free energy from an oscillating electric field.

8. Energetics of proline racemase: racemization of unlabeled proline in the unsaturated, saturated, and oversaturated regimes.

Review 9. Electroconformational coupling: how membrane-bound ATPase transduces energy from dynamic electric fields.

10. Activation of electrogenic Rb+ transport of (Na,K)-ATPase by an electric field.

1. Correlated conformational fluctuations during enzymatic catalysis: Implications for catalytic rate enhancement.

Review 2. Ion channel enzyme in an oscillating electric field.

3. Harmonic system analysis of the algae Valonia utricularis: contribution of an electrogenic transport system to gain and phase-shift of the transfer function.

4. Microbial growth inhibition by alternating electric fields.

5. Frequency and concentration windows for the electric activation of a membrane active transport system.

6. Stochastically pumped adaptation and directional motion of molecular machines.

7. On the efficiency and reversibility of active ligand transport induced by alternating rectangular electric pulses.

8. Mechanochemical coupling of the motion of molecular motors to ATP hydrolysis.

9. Contribution of electrogenic ion transport to impedance of the algae Valonia utricularis and artificial membranes.

10. Silver-zinc redox-coupled electroceutical wound dressing disrupts bacterial biofilm.