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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Identification of P2X2/P2X4/P2X6 heterotrimeric receptors using atomic force microscopy (AFM) imaging

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Antonio, Ligia S. [1, 2] ; Stewart, Andrew P. [1] ; Varanda, Wamberto A. [2] ; Edwardson, J. Michael [1]
Total Authors: 4
[1] Univ Cambridge, Dept Pharmacol, Cambridge CB2 1PD - England
[2] Univ Sao Paulo, Dept Physiol, Sch Med Ribeirao Preto, BR-14049 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: FEBS Letters; v. 588, n. 12, p. 2125-2128, JUN 5 2014.
Web of Science Citations: 7

Seven P2X purinergic receptor subunits have been identified: P2X1-P2X7. The overlapping expression of P2X2, P2X4 and P2X6 subunits has been shown in different cell types, and functional analysis of P2X receptors in Leydig cells suggests that the three subunits might interact. Here, His(6)-tagged P2X2, HA-tagged P2X4 and FLAG-tagged P2X6 subunits were co-expressed in tsA 201 cells. After sequential co-immunoprecipitation using anti-HA and anti-FLAG beads, all three subunits were present, demonstrating their interaction. Atomic force microscopy (AFM) imaging revealed receptors that were specifically decorated by both an anti-His(6) antibody and an anti-HA Fab fragment, indicating the presence of a P2X2/4/6 heterotrimer. To our knowledge, this is the first report of a P2X receptor containing three different subunits. (C) 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 08/10000-0 - P2X subunits expression in mice Leydig cells at different ages and interactions amongst P2X2, P2X4, P2X6 subunits forming functional purinergic receptors
Grantee:Ligia Subitoni Antonio
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 06/50954-7 - Ionic currents and receptors in the physiology of excitable and non-excitable cells
Grantee:Wamberto Antonio Varanda
Support type: Research Projects - Thematic Grants