Nepenthesin
Definition:
EC Tree > 3 Hydrolases > 3.4 Acting on peptide bonds (peptidases) > 3.4.23 Aspartic endopeptidases > 3.4.23.12 nepenthesin
Nepenthesin is an aspartic endopeptidase from the insectivorous plants Nepenthes spp. secretions and Drosera peltata leaves, with related enzymes in Lotus and sorghum. It belongs to peptidase family A1 (pepsin A family) and occurs in viruses and cellular organisms. Like pepsin it cleaves hydrophobic-amino-acid bonds, but additionally cleaves on either side of Asp and at Lys-/-Arg. In the pitcher fluid it digests captured insect prey to supply nitrogen. It features a pepsin-like aspartic-protease fold adapted to the acidic pitcher lumen.
Nepenthesin is an aspartic endopeptidase from the insectivorous plants Nepenthes spp. secretions and Drosera peltata leaves, with related enzymes in Lotus and sorghum. It belongs to peptidase family A1 (pepsin A family) and occurs in viruses and cellular organisms. Like pepsin it cleaves hydrophobic-amino-acid bonds, but additionally cleaves on either side of Asp and at Lys-/-Arg. In the pitcher fluid it digests captured insect prey to supply nitrogen. It features a pepsin-like aspartic-protease fold adapted to the acidic pitcher lumen.
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