Adrenergic alpha1 receptors (alpha1-adrenoceptors) are members of the adrenergic receptor group of G-protein-coupled receptors that also includes alpha2A, alpha2B, alpha2C, beta1, beta2 and beta3. The adrenergic alpha1 receptors are further divided into three subtypes: alpha1A, alpha1B and alpha1D receptors. lpha1-adrenoceptors are widely distributed in both the CNS and periphery where they play a major role in smooth muscle contraction. A fourth alpha1 receptor subtype has been postulated and is designated as alpha1L based on its low affinity for prazosin. It has been suggested that this subtype may represent a different conformational state of the alpha1A subtype.
Storage: Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.