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Which of the following statements about heterotrimeric G proteins is FALSE. Upon activation by a G-protein coupled...

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Biology

Which of the following statements about heterotrimeric Gproteins is FALSE.

Upon activation by a G-protein coupled receptor, the G-proteinusually breaks into two complexes, each of which can activatetarget proteins.

The α subunit is bound to GTP when the protein is in theinactive state

The activated a subunit switches itself off by hydrolyzing itsbound GTP

G-proteins can activate membrane-bound enzymes and ionchannels

Once activated by a receptor, the α subunit can dissociate fromthe receptor

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