A serine protease in the midgut of the silkworm, Bombyx mori: Protein sequencing, identification of cDNA, demonstration of its synthesis as zymogen form and activation during midgut remodeling

We identified a serine protease with a molecular mass of 37 kDa in the midgut of the silkworm, Bombyx mori. The activity of this protease (37-kDa protease: p37k) appears after pupation, when the metamorphic remodeling of the midgut is under progress. The sequence analysis of the purified protease an...

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