ArticleJournal of comparative physiology. B, Biochemical, systemic, and environmental physiology1996
Cloning and expression of cathepsin L-like proteinases in the hepatopancreas of the shrimp Penaeus vannamei during the intermolt cycle.
Article in Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 68 citations in OpenAlex.
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- Proteolytic activity in some freshwater animals and associated microflora in a wide pH range.Fish physiology and biochemistry · 2017Article
- Expression and purification of active recombinant cathepsin C (dipeptidyl aminopeptidase I) of kuruma prawn Marsupenaeus japonicus in insect cells.Journal of biomedicine & biotechnology · 2009Article
- Molecular and enzymatic properties of a cathepsin L-like proteinase with distinct substrate specificity from northern shrimp (Pandalus borealis).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2004Article
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cysteine protease activities have been characterized with benzyloxycarbonyl-lysine p-nitrophenyl ester as a synthetic substrate and E64 as a specific inhibitor in the hepatopancreas of the shrimp Penaeus vannamei. An optimum pH of 5.1 has been measured. To characterize these cysteine proteases, a hepatopancreas cDNA library was screened by hybridization to a Norway lobster cysteine protease cDNA fragment. Two cDNAs encoding P. vannamei cysteine protease precursors have been cloned and sequenced. The encoded polypeptides have 326 and 322 amino acid residues, respectively, each consisting of partial signal sequences (15 and 10 residues), a pro-region (93 and 94 residues), and a mature enzyme polypeptide (218 residues). Cys25, His159 and Asn175 form the catalytic triad in the putative active site of the mature enzymes. Compared with invertebrate cysteine proteases (Homarus and Fasciola), each of the two shrimp enzymes shows 70 and 52% amino acid sequence identity, respectively; 63% identity is shown with rat cathepsin L. Northern hybridization analysis showed the same size for the different cysteine protease transcripts in hepatopancreas tissue (approximately 1.1 kb). During intermolt cycles, variations in cysteine protease activity were correlated with the variations in the levels of specific mRNA.
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