General description

Napsin is a pepsin-like aspartic proteinase in the A1 clan of the AA clade ofproteinases. Napsin A is involved in processing propeptide pulmonary surfactant protein B(proSP-B) in the lung. In normal, benign tissue, Napsin A has expressed in type II pneumocytesof the lung and proximal tubules of the kidney. Napsin A is a useful marker for lungadenocarcinoma.

Legal Information

Cell Marque is a trademark of Sigma-Aldrich Co. LLC

Linkage

Napsin A Positive Control Slides, Product No. 352S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

Other Notes

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Physical form

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and ﹤0.1% Sodium Azide

Preparation Note

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Quality