scholarly journals Investigation of extracellular protease activity of two different extremely halophilic archaea isolated from raw hide

2017 ◽  
Vol 17 (4) ◽  
pp. 255-262
Author(s):  
Fevziye Ișil Kesbic ◽  
Binnur Mericli Yapici
Keyword(s):  
Protease Activity ◽  
Halophilic Archaea ◽  
Extracellular Protease ◽  
Extremely Halophilic Archaea ◽  
Extracellular Protease Activity

scholarly journals Identification and characterization of an extracellular protease activity produced by the marine Vibriosp 60

1996 ◽  
Vol 136 (1) ◽  
pp. 39-44 ◽  
Author(s):  
A Marcello ◽  
A Loregian ◽  
V Filippis ◽  
A Fontana ◽  
T.R Hirst ◽  
...  
Keyword(s):  
Protease Activity ◽  
Extracellular Protease ◽  
Extracellular Protease Activity ◽  
Identification And Characterization

scholarly journals The Virulence Function and Regulation of the Metalloprotease Gene prtA in the Plant-Pathogenic Bacterium Burkholderia glumae

2019 ◽  
Vol 32 (7) ◽  
pp. 841-852 ◽  
Author(s):  
Tiago Lelis ◽  
Jingyu Peng ◽  
Inderjit Barphagha ◽  
Ruoxi Chen ◽  
Jong Hyun Ham
Keyword(s):  
Protease Activity ◽  
Virulent Strain ◽  
Regulatory Gene ◽  
Extracellular Protease ◽  
Bacterial Disease ◽  
Rna Seq ◽  
Burkholderia Glumae ◽  
Responsible Gene ◽  
Extracellular Protease Activity ◽  
Serine Metalloprotease

Bacterial panicle blight caused by Burkholderia glumae is a major bacterial disease of rice. Our preliminary RNA-seq study showed that a serine metalloprotease gene, prtA, is regulated in a similar manner to the genes for the biosynthesis and transport of toxoflavin, which is a known major virulence factor of B. glumae. prtA null mutants of the virulent strain B. glumae 336gr-1 did not show a detectable extracellular protease activity, indicating that prtA is the solely responsible gene for the extracellular protease activity detected from this bacterium. In addition, inoculation of rice panicles with the prtA mutants resulted in a significant reduction of disease severity compared with the wild-type parent strain, suggesting the requirement of prtA for the full virulence of B. glumae. A double mutant deficient in both serine metalloprotease and toxoflavin (ΔtoxA/prtA−) exhibited a further numeric but not statistically significant decrease of disease development compared with the ΔtoxA strain. Both the prtA-driven extracellular protease activity and the toxoflavin production were dependent on both the tofI/tofR quorum-sensing and the global regulatory gene qsmR, indicating the important roles of the two global regulatory factors for the bacterial pathogenesis by this pathogen.

Detection of extracellular protease activity in different species and genera of ectomycorrhizal fungi

Mycorrhiza ◽  
2007 ◽  
Vol 17 (3) ◽  
pp. 241-248 ◽  
Author(s):  
Cajsa M. R. Nygren ◽  
Johan Edqvist ◽  
Malin Elfstrand ◽  
Gregory Heller ◽  
Andy F. S. Taylor
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Protease Activity ◽  
Extracellular Protease ◽  
Extracellular Protease Activity

scholarly journals Cilia protein IFT88 regulates extracellular protease activity by optimizing LRP‐1–mediated endocytosis

2018 ◽  
Vol 32 (12) ◽  
pp. 6771-6782 ◽  
Author(s):  
Clarissa R. Coveney ◽  
Isabella Collins ◽  
Megan Mc Fie ◽  
Anastasios Chanalaris ◽  
Kazuhiro Yamamoto ◽  
...  
Keyword(s):  
Protease Activity ◽  
Extracellular Protease ◽  
Extracellular Protease Activity

scholarly journals Extracellular protease-producing actinomycetes and other bacteria in cultivated soil

1986 ◽  
Vol 58 (1) ◽  
pp. 9-17
Author(s):  
Raina Niskanen ◽  
Eva Eklund
Keyword(s):  
Protease Activity ◽  
Mineral Soil ◽  
Soil Samples ◽  
Extracellular Protease ◽  
The Other ◽  
Bacterial Strains ◽  
Pasture Soil ◽  
Cultivated Soil ◽  
Proteolytic Bacteria ◽  
Extracellular Protease Activity

The occurrence and properties of extracellular protease-producing actinomycetes and other bacteria in cultivated soil were studied. Experimental soils consisted of three mineral soil samples and one Sphagnum peat sample from a greenhouse. The mineral soil samples represented arable, pasture and uncultivated soils. From experimental soils, 240 bacterial strains were isolated, 68 strains there of were proteolytic. A greater number of proteolytic strains originated from pasture soil than from the other soils. Actinomycetes accounted for 70 % of the proteolytic strains isolated from pasture soil. Several proteolytic bacteria were isolated also from peat, but only few of them were typical actinomycetes. Many strains with high extracellular protease activity proved to be fermentative bacilli. Production of oxidase enzymes, significant in the humification processes, occurred frequently among strains isolated from pasture soil and peat. The ability to produce dark melanoid pigments was a frequently noted characteristic of the proteolytic actinomycetes.

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