Napsin

Definition:

EC Tree > 3 Hydrolases > 3.4 Acting on peptide bonds (peptidases) > 3.4.23 Aspartic endopeptidases > 3.4.23.B1 napsin
Napsin is an aspartic endopeptidase found in viruses and cellular organisms, belonging to the aspartic proteinases and performing proteolytic cleavage of polypeptides into large, stable peptides. In lysosomal compartments it contributes to protein turnover and, in lung and kidney, to surfactant and protein homeostasis. It features a pepsin-like aspartic-protease fold.

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