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Regulation of the beta-adrenergic receptor by methylation of membrane phospholipids.


Stimulation of the beta-adrenergic receptor increases the enzymatic methylation of membrane phospholipids. Increased synthesis of phosphatidyl-N-monomethylethanolamine by methyltransferase I increases fluidity and enhances the ability of the beta-adrenergic receptor to couple with adenylate cyclase. The number of beta-adrenergic receptors can be regulated by the rate of synthesis and of degradation of phosphatidylcholine formed by transmethylation.

[Indexed for MEDLINE]

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