Related MeSH Hierarchy (4)
Chemicals and Drugs [D] » Amino Acids, Peptides, and Proteins [D12] » Proteins » Intracellular Signaling Peptides and Proteins » GTP-Binding Proteins » Heterotrimeric GTP-Binding Proteins » GTP-Binding Protein alpha Subunits
Chemicals and Drugs [D] » Enzymes and Coenzymes [D08] » Enzymes » Hydrolases » Acid Anhydride Hydrolases » GTP Phosphohydrolases » GTP-Binding Proteins » Heterotrimeric GTP-Binding Proteins » GTP-Binding Protein alpha Subunits
Chemicals and Drugs [D] » Amino Acids, Peptides, and Proteins [D12] » Proteins » Carrier Proteins » GTP-Binding Proteins » Heterotrimeric GTP-Binding Proteins » GTP-Binding Protein alpha Subunits
Chemicals and Drugs [D] » Amino Acids, Peptides, and Proteins [D12] » Proteins » Membrane Proteins » Heterotrimeric GTP-Binding Proteins » GTP-Binding Protein alpha Subunits
Description
The GTPase-containing subunits of heterotrimeric GTP-binding proteins. When dissociated from the heterotrimeric complex these subunits interact with a variety of second messenger systems. Hydrolysis of GTP by the inherent GTPase activity of the subunit causes it to revert to its inactive (heterotrimeric) form. The GTP-Binding protein alpha subunits are grouped into families according to the type of action they have on second messenger systems. MeSH
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