Q1 Under standard conditions, the free energyneeded to breakdown ATP to ADP and P; is -30.5kJ/mol. Calculate the free energy (AG') required tobreakdown ATP in bacteria, where theconcentrations of ATP, ADP, and P; are 4.0 mM, 2.5mM, and 8.0 mM, respectively.Hint:[products]AG' = AG" +RTln[reactants]where, at 25 °C, RT = 2.479 kJ/molIs this reaction exergonic or endergonic?

Gibbs free energy is the amount of energy that is available for a system to do useful work (∆G').…

Answered: Q1 Under standard conditions, the free…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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24. Determine equilibrium constants for the hydrolysis of phosphoenolpyruvate (AG" is 61.9 kJ/mol) at pH 7 and 25°C: nariw (d)
A one-to-one protein (P)-ligand (L) complexation (P + L PL) has a dissociation equilibrium constant (Kd) value of 100 nM at 25°C, and the Kd remains the same at 37°C. 1) What is AS of binding at 25°C? Assume ACp of the binding is 0 over the temperature range. AS = 1.34E2 kJ/(mol*K) (note the unit!!) (sig. fig =3) 2) What is the concentration of the PL complex formed at equilibrium when you mix 0.20 uM (microM) of Protein and 1.0 uM of Ligand together at 37°C? PL at equilibrium = 8.1E-1 uM (note the unit!!) (sig. fig =2)
Q4. Thinking of the individual charges of the metal and polyatomic ions present in Ca5(PO4)30H, can you explain why this compound is neutral? Show the working of how the charges balance each other out. (3)
11
bo Consider a uniport system where a carrier protein transports an uncharged substance A across a cell membrane. Suppose that at a certain ratio of [A] inside to [A] outside, the AG for the transport of substance A from outside the cell to the inside, Macmillan Leaming A outside → Ainside, is 10.7 kJ/mol at 25°C. What is the ratio of the concentration of substance A inside the cell to the concentration outside? [A]inside [A]outside Choose the true statement about the transport of A under the conditions described. Because AG is positive, the ratio [A] inside/[A]outside must be less than one. Increasing [A]outside will cause AG for movement of Aoutside to Ainside to become a larger positive number. Movement of Ainside to Aoutside will be spontaneous. Decreasing the concentration of the uniport protein in the membrane will cause AG to become a smaller positive number.
Bailey and Ollis Biochemical Engineering (Write your solution)
answer only question g
PTP1B Substrate kcat Km. kcat/Km UM 10-7 x (s-1 M) DADEPYLIPQQG DADAPYLIPQQG DAAEP YLIPQQG AAAAPYLIPQQG 44.6 + 1.8 39.8 + 0.32 3.9 + 0.9 13.7 + 0.46 1.1 + 0.25 0.29 + 0.01 35.3 + 0.22 6.6 + 0.22 0.53 + 0.02 34.7 + 0.25 52.7 + 0.7 0.066 + 0.001 ) The units for kcat/KM in the above are given according to standard scientific notation. On this (d) ( basis what is the value of this kinetic parameter for the DADEPYLIPQQG substrate?

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