Problem

Upon activation by a receptor, a G protein exchanges bound GDP for GTP, rather than phosph...

Upon activation by a receptor, a G protein exchanges bound GDP for GTP, rather than phosphor ylating GDP that is already bound. Similarly, the α subunit-GTP complex has a slow GTPase activity that hydrolyzes bound GTP, rather than exchanging it for GDP. Describe experimental evidence that would be consistent with these conclusions.

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Solutions For Problems in Chapter 20