Earlier we presented several lines of evidence that a 67-kDa laminin binding protein (LBP) inLeishmania donovani,that is different from the putative mammalian 67-kDa laminin receptor, may play an important role in the onset of leish-maniasis, as these parasites invade macrophages in various organs after migrating through the extracellular matrix. Here we describe the membrane orientation of thisLeish-manialaminin receptor. Flowcytometric analysis using anti-LBP Ig revealed its surface localization, which was further confirmed by enzymatic radiolabeling ofLeishmaniasurface proteins, autoradiography and Western blotting. .
