E. Rodriguez Boulan is a cell biology researcher studying how epithelial cells establish and maintain apical-basal polarity. The institutional profile links this research to the organization of membrane proteins and the physiology of the retinal pigment epithelium.[ref]
Enrique Rodriguez-Boulan research profile at Weill Cornell Medicine. Research summary and1978 discovery attribution
A 1978 study with D. D. Sabatini used the budding of enveloped viruses as a visible test of membrane organization. In polarized epithelial monolayers, Influenza A virus budded from the apical membrane, whereas vesicular stomatitis virus acquired its envelope at the basolateral membrane. The same biological cell could therefore present biologically different surface regions.[ref]
The comparison turns an abstract property, cell polarity, into a spatially observable event. If two kinds of virus leave through different surfaces, the membrane cannot be treated as one uniform bag. The experiment motivates questions about how proteins reach the correct membrane region and remain organized there; it does not by itself identify every sorting component.
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