Beta<sub>1</sub>-Adrenergic Receptor Regulation Revisited.

Steinberg, Susan F · Circ Res · 2018

review · Level V

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Abstract

The actions and regulation of cardiomyocyte β<sub>1</sub>ARs differ in several respects from the properties described for the prototypical β<sub>2</sub>AR subtype; a mechanism to explain the unique properties of the β<sub>1</sub>AR subtype has never been obvious. This viewpoint summarizes recent studies that identify a novel signaling paradigm for the β<sub>1</sub>AR, implicating the N-terminus as a molecular determinant of β<sub>1</sub>AR responsiveness.

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