when protein binding is at PL) Add more P or L to system PLJ (PIILI The...
. For a protein P binding to a ligand L, derive the Scatchard equation that relates the inverse of the concentration of the bound form (1/[P:L]) to the inverse of the concentration of free form (1/[P]).
1. The Hill Equation a) Derive the Hill Equation for a protein binding a single ligand (i.e. the reaction P + PL) and explain how a plot will appear. Derive the Hill Equation for a dimeric protein that simultaneously binds two ligands (i.e. the reaction: P2 2L- P2L2) and explain how a plot will appear. Explain what is problematic about the reaction shown in question b) L b) c)
1. The Hill Equation a) Derive the Hill Equation for a...
Protein A Protein B [PL), UM 0.00 0 0.000 0 1) (10 marks) You study ligand binding to two proteins, A and B. You measured the concentration, (PL), of the ligand-bound form of the protein at various ligand concentrations, [L]. The data are summarized in the two tables below. Note that you do not know the total concentration of the protein, but you know that adding more ligand did not noticeably change the bound- protein concentration. [L), UM [PL], uM...
Short answer questions: 21. Protein A has a binding site for ligand L with a Ka of 10-6 M. Protein B has a binding site for ligand L with a Ka of 10'M. (a). Which protein has a higher affinity for ligand L? Explain your reasoning. (b). At what concentration of ligand L is proteins A half-saturated. At what concentration of L is protein B half-saturated. [L] y = [L] + Ka 22. A protein binds to a ligand L...
A binding protein binds to a ligand L with a K_d of 400 nM. What is the concentration of ligand when is a) 0.25, b) 0.6, c) 0.95?
A binding protein binds to a ligand with Kd=30nm. What is the
concentration of ligand when the [L] when the fraction
bound,,
is a) 0.25, b) 0.6 and c) 0.95.
1. A biochemist is attempting to separate a DNA-binding protein (protein X) from other proteins in a solution. Only three other proteins (A, B, and C) are present. The proteins have the following properties: pl (isoelectric point) Size Mr Bind to DNA? protein A 7.4 protein B 3.8 protein C 7.9 protein X7.8 82,000 21,500 23,000 22,000 yes yes no yes What type of protein separation techniques might she use to protein X from the other proteins. Give a flow...
Positive cooperativity is when binding of a ligand to a protein results in a conformational change that allows increased binding affinity at other ligand binding sites in the same molecule. Select one: True False
Biochemistry
need help on question 2. I'm not sure if question 1
plays a part in question 2 , thanks in advance!
A researcher is trying to identify potential ligands for a protein, P. She determines the equilibrium dissociation constants (Kd) for 4 proposed ligands-L M, N, and O: P + L → PL Kd= 100 μM P +N → PLKd = 100 mM P + O → PL Kd = 100 nM Which of the proposed ligands binds the...
Is more binding energy released when an enzyme encounters its substrate or when an antibody encounters it eliciting antigen? What is the implication here?