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G Protein beta Subunit

Heterotrimeric GTP-Binding Protein subunits that tightly associate with GTP-Binding Protein gamma Subunits. A dimer of beta and gamma subunits is formed when the GTP-Binding Protein alpha Subunit dissociates from the GTP-Binding Protein heterotrimeric complex. The beta-gamma dimer can play an important Role in Signal Transduction by interacting with a variety of Second Messengers.