A gut-specific chitinase from the mulberry longicorn beetle, Apriona germari (Coleoptera: Cerambycidae): cDNA cloning, gene structure, expression and enzymatic activity

Title:

A gut-specific chitinase from the mulberry longicorn beetle, Apriona germari (Coleoptera: Cerambycidae): cDNA cloning, gene structure, expression and enzymatic activity

Creator:

Choo, Young Moo, Lee, Kwang Sik, Kim, Bo Yeon, Kim, Doh Hoon, Yoon, Hyung Joo, Sohn, Hung Dae, and Jin, Byung Rae

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:a65db06c-e9ed-4eab-8293-1a70a6fb8732
uuid:a65db06c-e9ed-4eab-8293-1a70a6fb8732

Subject:

Cerambycidae, Apriona germari, baculovirus expression vector, cDNA cloning, chitinase, enzyme, gene structure, and mulberry longicorn beetle

Type:

article, model:article, and TEXT

Description:

A gut-specific chitinase gene was cloned from the mulberry longicorn beetle, Apriona germari. The A. germari chitinase (AgChi) gene spans 2894 bp and consists of five introns and six exons coding for 390 amino acid residues. AgChi possesses the chitinase family 18 active site signature and three N-glycosylation sites. Southern blot analysis of genomic DNA suggests that AgChi is a single copy gene. The AgChi cDNA was expressed as a 46-kDa polypeptide in baculovirus-infected insect Sf9 cells and the recombinant AgChi showed activity in a chitinase enzyme assay. Treatment of recombinant virus-infected Sf9 cells with tunicamycin, a specific inhibitor of N-linked glycosylation, revealed that AgChi is N-glycosylated, but the carbohydrate moieties are not essential for chitinolytic activity. Northern and Western blot analyses showed that AgChi was specifically expressed in the gut; AgChi was expressed in three gut regions, indicating that the gut is the prime site for AgChi synthesis in A. germari larvae.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2007 Volume:104 | Number:2

Harvested from:

CDK

Metadata only:

false