نتایج جستجو برای: chitinase 42

تعداد نتایج: 112843  

2014
Myung-Chul Chung Scott Dean Ekaterina S. Marakasova Albert O. Nwabueze Monique L. van Hoek

Biofilms, multicellular communities of bacteria, may be an environmental survival and transmission mechanism of Francisella tularensis. Chitinases of F. tularensis ssp. novicida (Fn) have been suggested to regulate biofilm formation on chitin surfaces. However, the underlying mechanisms of how chitinases may regulate biofilm formation are not fully determined. We hypothesized that Fn chitinase ...

2006
W. Donderski M. Trzebiatowska

A study on the occurrence and chitinolytic activity of planktonic, benthic and epiphytic bacteria was carried out in the Moty Bay of Lake Jeziorak near Ilawa. The greatest number of chitinolytic bacteria occurred on macrophytes. In terms of percentages, the chitinolytic bacteria share among heterotrophic bacteria was much greater in epiphytic and planktonic bacteria than in benthic ones. When c...

A. A. Motalebi, A. Ghoroghi J. Alikhajeh M. Daliri M. Zarei S. Aminzadeh,

 Chitinases have received attention because of their wide applications in the medicine, biotechnology, agriculture, waste management and industrial applications such as food quality enhancer and biopesticide. Excessive use of insecticides has led to several problems related to pollution and environmental degradation. In this study, isolation and identification of native bacterial strains with c...

Journal: :Phytopathology 2000
Z Zhang G Y Yuen

ABSTRACT The role of chitinase production by Stenotrophomonas maltophilia strain C3 in biological control of leaf spot on tall fescue (Festuca arundinacea), caused by Bipolaris sorokiniana, was investigated in vitro and in vivo. The filtrate of a broth culture of C3, with chitin as the carbon source, was separated into fractions. A high molecular-weight fraction (>8 kDa) was chitinolytic and mo...

Journal: :The Keio journal of medicine 2007
Mayumi Kawada Yuriko Hachiya Atsuko Arihiro Emiko Mizoguchi

It has been hypothesized that dysregulated host/microbial interactions play a pivotal role in the pathogenesis of inflammatory bowel disease. However, the exact mechanisms underlying the induction and perpetuation of the intestinal disorder are unclear. Recently, we unexpectedly discovered significantly upregulated gene expression of chitinase 3-like-1 in inflamed colon of the dextran sulfate s...

Journal: :Indian Journal of Pharmaceutical Sciences 2021

To investigate the diagnostic value of chitinase-3-like protein 1 and keratin 5 in bronchoalveolar lavage fluid 88 patients with lung disease. This was a case control study to collect 50 cancer (malignant disease group) 38 benign (benign who were admitted respiratory medicine department affiliated hospital medical school Ningbo university from December 2019 March 2020. The enzyme-linked immunos...

Journal: :The FEBS journal 2006
Ingunn A Hoell Bjørn Dalhus Ellinor B Heggset Stein I Aspmo Vincent G H Eijsink

We describe the cloning, overexpression, purification, characterization and crystal structure of chitinase G, a single-domain family 19 chitinase from the Gram-positive bacterium Streptomyces coelicolor A3(2). Although chitinase G was not capable of releasing 4-methylumbelliferyl from artificial chitooligosaccharide substrates, it was capable of degrading longer chitooligosaccharides at rates s...

Journal: :Plant physiology 1995
Q G Chen A B Bleecker

Kinetic aspects of ethylene-mediated signal transduction leading to seedling-growth inhibition and chitinase induction in Arabidopsis were investigated by the introduction of defined mutations in components of these pathways. Dose-response analysis of wild-type responses indicated that the rate-limiting steps for seedling responses and Arabidopsis basic-chitinase induction displayed Michaelis-M...

Journal: :Journal of virology 1998
C J Thomas H L Brown C R Hawes B Y Lee M K Min L A King R D Possee

Confocal immunofluorescence microscopy was used to demonstrate that the Autographa californica nucleopolyhedrovirus (AcMNPV) chitinase was localized within the endoplasmic reticulum (ER) of virus-infected insect cells. This was consistent with removal of the signal peptide from the chitinase and an ER localization motif (KDEL) at the carboxyl end of the protein. Chitinase release from cells, a ...

Journal: :Microbiology 1995
M B Brurberg V G Eijsink A J Haandrikman G Venema I F Nes

A gene encoding a chitinase from Serratia marcescens BJL200 was cloned and expressed in Escherichia coli and S. marcescens. Nucleotide sequencing revealed an open reading frame encoding a 55.5 kDa protein of 499 amino acids without a typical signal peptide for export. The cellular localization of the chitinase was studied, using two types of cell fractionation methods of immunocytochemical tech...

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