LDL receptor relatives at the crossroad of endocytosis and signaling
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For many years, the low-density lipoprotein (LDL) receptor and the LDL receptor-related protein (LRP) have been considered to be prototypes of cargo receptors which deliver, via endocytosis, macromolecules into cells. However, the recent identification of additional members of this gene family and examination of their biology has revealed that at least some of these proteins are also signaling receptors. Very low density lipoprotein receptor and ApoER2 transmit the extracellular reelin signal into migrating neurons, and thus are key components of the reelin pathway which governs neuronal layering of the forebrain during embryonic brain development. LRP5 and LRP6 are integral components of the Wnt signaling pathway which is central to many processes of metazoan development, cell proliferation, and tumor formation. Adaptor proteins interacting with the cytosolic domains of these receptors might orchestrate their ability to deliver their cargo or a signal.
- LDL receptor relatives at the crossroad of endocytosis and signaling
Cellular and Molecular Life Sciences CMLS
Volume 60, Issue 5 , pp 892-903
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- Birkhäuser Verlag
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- Key words: LDL receptor relatives; endocytosis; signaling; adaptor protein.
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