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Opioid Receptor-Like (ORL1) Receptor Utilizes Both GoA and GoB for Signal Transductio

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The ORL1 receptors stably expressed in HEK 293 cells can utilize PTX-resistant mutants of GαoA/B to inhibit adenylyl cyclase (AC) and stimulate extracellular signal-regulated protein kinases (ERKs). However, development of AC superactivation and loss of ERK1/2 responsiveness induced by chronic activation of the ORL1 receptors remained PTXsensitive.

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Keywords: Adenylyl cyclase; ERK; G proteins; ORL1 receptor; signal transduction; superactivation

Document Type: Research Article

Affiliations: Department of Biochemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.

Publication date: 2006-05-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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