Publicou 6 edições por ano
ISSN Imprimir: 1045-4403
ISSN On-line: 2162-6502
Indexed in
Parameters of LRP5 from a Structural and Molecular Perspective
RESUMO
LRP5, along with LRP6 and their Drosophila homolog, Arrow, constitute a novel subclass of the LDL receptor superfamily. The arrangement of structural motifs in these receptors is different from the other members of the superfamily, and only recently have we begun to understand the functional importance of human LRP5 (and LRP6). Whole genome positional cloning studies have identified a number of mutations in LRP5 that underlie inherited human diseases/phenotypes, particularly those involving the skeleton and the eye. A number of studies have illustrated the importance of Lrp5/6/Arrow as a co-receptor with Frizzled for the Wnt proteins and their critical role in the regulation of the Wnt/β-catenin signaling pathway. The cataloging of these human mutations, in combination with engineered mutations in mice and other studies involving gene/protein modifications, has led to a better understanding of the function of the various domains in LRP5/6. In this review, we discuss a number of studies that have revealed a wide variety of protein-protein interactions that occur with the various structural motifs in the Lrp5 protein. Ultimately, these interactions regulate the activity of the Wnt/β-catenin signaling pathway and the role it plays in processes such as bone mass accrual and vision.
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