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Immunofluorescent localization of cathepsins B and D in human fibroblasts
JS Mort, AR Poole and RS Decker
The proteinase cathepsin B has been localized in human fibroblasts using a monospecific antiserum that reacts in a precipitating manner with the denatured enzyme only. The distribution of staining as revealed by both direct and indirect immunofluorescence indicates a typical lysosomal localization similar to that observed for cathepsin D. Using dual localization methods employing fluorescein- and tetramethylrhodamine-labeled affinity purified antibodies both proteinases were usually observed in the same lysosome, indicating a combined role in intracellular digestion.
Volume 29,
Issue 5,
pp. 649-657,
05/01/1981
Copyright © 1981 by The Histochemical Society
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