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Waegemann, Karin; Eichacker, Susanne; Soll, Jürgen (1992): Outer envelope membranes from chloroplasts are isolated as right-side-out vesicles. In: Planta, Vol. 187, Nr. 1: S. 89-94
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Abstract

Outer envelope membranes were isolated from purified chloroplasts of pea leaves. The sidedness of the vesicles was analyzed by (i) aqueous polymer-two phase partitioning, (ii) the effect of limited proteolysis on the outer-envelope proteins (OEP) 86 and OEP 7 in intact organelles and isolated membranes, (iii) fluorescence-microscopy and finally (iv) binding of precursor polypeptides to isolated outer-membrane vesicles. The results demonstrate that purified outer envelope membranes occur largely (>90%) as right-side-out vesicles.