Membrane organization of the serotonin1A receptor monitored by a detergent-free approach

Kalipatnapu, Shanti ; Chattopadhyay, Amitabha (2007) Membrane organization of the serotonin1A receptor monitored by a detergent-free approach Cellular and Molecular Neurobiology, 27 (4). pp. 463-474. ISSN 0272-4340

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1. Insolubility of membrane constituents in nonionic detergents such as Triton X-100 has been a widely used biochemical criterion to indicate their localization in membrane domains. However, concerns on the possibility of membrane perturbation in the presence of detergents have led to the development of detergent-free approaches. 2. We have explored the organization of the serotonin1A receptor, an important G-protein coupled receptor, from bovine hippocampus and CHO cells using a detergent-free approach in order to address the points of agreement with our previous results using Triton X-100. 3. A significant fraction of the serotonin1A receptor has been found to be localized in a heavy density fraction obtained using a detergent-free approach to isolate membrane domains. In addition, we have characterized the membrane fractions isolated in terms of their lipid composition and membrane physical properties. 4. The results obtained on the membrane localization of the serotonin1A receptor from the present experiments using a detergent-free approach correlate well with our earlier findings obtained using a detergent-based method (Kalipatnapu, S., and Chattopadhyay, A., FEBS Lett. 576:455-460, 2004). These results provide important information on the membrane organization of the hippocampal serotonin1A receptor and are relevant in view of the concerns on the use of detergent in determination of membrane organization of constituent proteins and lipids.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
Keywords:Serotonin1A Receptor; Membrane Organization; Detergent-free Method; Bovine Hippocampus
ID Code:6987
Deposited On:26 Oct 2010 04:45
Last Modified:16 May 2016 17:14

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