Question: Mutli-step question for Schild Plot concept and application: a. Use the data below to calculate pA2 for AO7 from the U58 data. Start by calculating

Mutli-step question for Schild Plot concept and application:

a. Use the data below to calculate pA2 for AO7 from the U58 data. Start by calculating the dose ratios.

[U58] (M)

[AO7] needed for 50% response

no antagonist present

4.0E-09

5.00E-08

6.3E-09

2.00E-07

1.3E-08

2.50E-07

1.4E-08

b. Using your result above, determine the Kd for U58, being sure to specify which receptor subtype the Kd is for.

c. Use the data below for agonist (A) with a competitive antagonist (B) to produce a Schild plot and report the value of pA2. (All concentrations are in M.)

[A] for 50% biol effect [B]

7.50E-09 none

8.00E-09 1.00E-08

8.40E-09 1.80E-08

1.00E-08 5.00E-08

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