Ephrin ligands presented on one cell surface associate with their receptors on
the surface of a juxtaposed cell, often resulting in cell-cell repulsion. In
this issue of Cell, Janes et al. (2005) show that the ephrin ligand can be
proteolytically released from its membrane tether by a complex on the opposing
cell composed of the ephrin receptor and an ADAM metalloprotease.
Figure 1.
Figure 1. The Association between the ADAM10 Protease and
the Ephrin-A5/EphA3 Ligand-Receptor Signaling Complex
The above figure is
reprinted
by permission from Cell Press:
Cell
(2005,
123,
185-187)
copyright 2005.