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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