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Título

LRRC8 proteins share a common ancestor with pannexins, and may form hexameric channels involved in cell-cell communication

Autor Abascal, Federico ; Zardoya, Rafael
Fecha de publicación 25-abr-2012
EditorWiley-VCH
Citación BioEssays 34(7): 551-560 (2012)
ResumenLeucine-rich repeat-containing 8 (LRRC8) proteins are composed of four transmembrane helices and 17 leucine-rich repeats (LRR). Although LRRC8 proteins have been associated with important processes, like maturation of B cells or adipocyte differentiation, their biology and molecular function are largely unknown. We found that LRRC8 proteins originated from the combination of a pannexin and an LRR domain (most likely related to the SHOC2, LAP, RSU1 and LRRIQ4 protein families) before the diversification of chordates. We propose that, like pannexins, LRRC8 proteins form hexameric channels, which participate in cell-cell communication processes. According to the inferred topological model, and contrary to what was previously assumed, the six LRR domains are located in the cytoplasm, and could participate in the organisation of signalling cascades. By compiling available proteomics and gene expression data, and on the basis of the LRRC8 proposed hexameric channel structure, we present clues to the function of this family. © 2012 WILEY Periodicals, Inc.
URI http://hdl.handle.net/10261/124027
DOI10.1002/bies.201100173
Identificadoresdoi: 10.1002/bies.201100173
issn: 0265-9247
e-issn: 1521-1878
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