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Digestive proteinases in Lasioderma serricorne (Coleoptera: Anobiidae).
Bull Entomol Res. 2002 Aug; 92(4):331-6.BE

Abstract

The cigarette beetle, Lasioderma serricorne (Fabricius), is a common pest of stored foods. A study of digestive proteinases in L. serricorne was performed to identify potential targets for proteinaceous biopesticides, such as proteinase inhibitors. Optimal casein hydrolysis by luminal proteinases of L. serricorne was in pH 8.5-9.0 buffers, although the pH of luminal contents was slightly acidic. Results from substrate and inhibitor analyses indicated that the primary digestive proteinases were serine proteinases. The most effective inhibitors of caseinolytic hydrolysis were from soybean (both Bowman Birk and Kunitz), with some inhibition by chymostatin, N-tosyl-L-phenylalanine chloromethyl ketone, and leupeptin. Casein zymogram analysis identified at least eight proteolytic activities. Activity blot analyses indicated one major proteinase activity that hydrolysed the trypsin substrate N-alpha-benzoyl-L-arginine rho-nitroanilide, and three major proteinase activities that hydrolysed the chymotrypsin substrate N-succinyl ala-ala-pro-phe rho-nitroanilide. The absence of cysteine, aspartic, and metallo proteinases in L. serricorne digestion was evidenced by the lack of activation by thiol reagents, alkaline pH optima, and the results from class-specific proteinase inhibitors. The data suggest that protein digestion in L. serricorne is primarily dependent on trypsin- and chymotrypsin-like proteinases.

Authors+Show Affiliations

USDA ARS Grain Marketing and Production Research Center, 1515 College Avenue, Manhattan, KS 66502, USA. bso@ksu.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

12191441

Citation

Oppert, B, et al. "Digestive Proteinases in Lasioderma Serricorne (Coleoptera: Anobiidae)." Bulletin of Entomological Research, vol. 92, no. 4, 2002, pp. 331-6.
Oppert B, Hartzer K, Zuercher M. Digestive proteinases in Lasioderma serricorne (Coleoptera: Anobiidae). Bull Entomol Res. 2002;92(4):331-6.
Oppert, B., Hartzer, K., & Zuercher, M. (2002). Digestive proteinases in Lasioderma serricorne (Coleoptera: Anobiidae). Bulletin of Entomological Research, 92(4), 331-6.
Oppert B, Hartzer K, Zuercher M. Digestive Proteinases in Lasioderma Serricorne (Coleoptera: Anobiidae). Bull Entomol Res. 2002;92(4):331-6. PubMed PMID: 12191441.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Digestive proteinases in Lasioderma serricorne (Coleoptera: Anobiidae). AU - Oppert,B, AU - Hartzer,K, AU - Zuercher,M, PY - 2002/8/23/pubmed PY - 2002/10/3/medline PY - 2002/8/23/entrez SP - 331 EP - 6 JF - Bulletin of entomological research JO - Bull Entomol Res VL - 92 IS - 4 N2 - The cigarette beetle, Lasioderma serricorne (Fabricius), is a common pest of stored foods. A study of digestive proteinases in L. serricorne was performed to identify potential targets for proteinaceous biopesticides, such as proteinase inhibitors. Optimal casein hydrolysis by luminal proteinases of L. serricorne was in pH 8.5-9.0 buffers, although the pH of luminal contents was slightly acidic. Results from substrate and inhibitor analyses indicated that the primary digestive proteinases were serine proteinases. The most effective inhibitors of caseinolytic hydrolysis were from soybean (both Bowman Birk and Kunitz), with some inhibition by chymostatin, N-tosyl-L-phenylalanine chloromethyl ketone, and leupeptin. Casein zymogram analysis identified at least eight proteolytic activities. Activity blot analyses indicated one major proteinase activity that hydrolysed the trypsin substrate N-alpha-benzoyl-L-arginine rho-nitroanilide, and three major proteinase activities that hydrolysed the chymotrypsin substrate N-succinyl ala-ala-pro-phe rho-nitroanilide. The absence of cysteine, aspartic, and metallo proteinases in L. serricorne digestion was evidenced by the lack of activation by thiol reagents, alkaline pH optima, and the results from class-specific proteinase inhibitors. The data suggest that protein digestion in L. serricorne is primarily dependent on trypsin- and chymotrypsin-like proteinases. SN - 0007-4853 UR - https://www.unboundmedicine.com/medline/citation/12191441/Digestive_proteinases_in_Lasioderma_serricorne__Coleoptera:_Anobiidae__ L2 - https://www.cambridge.org/core/product/identifier/S000748530200038X/type/journal_article DB - PRIME DP - Unbound Medicine ER -