- Membrane-associated guanylate kinase proteins MPP4 and MPP5 associate with Veli3 at distinct intercellular junctions of the neurosensory retina. Stöhr, H., Molday, L.L., Molday, R.S., Weber, B.H., Biedermann, B., Reichenbach, A., Krämer, F. J. Comp. Neurol. (2005)