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A Thermophilic Extracellular Acid Protease from Thermoplasma volcanium
Date
2002-10-20
Author
Kocabıyık, Semra
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https://hdl.handle.net/11511/72065
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An extracellular - Pepstatin insensitive acid protease produced by Thermoplasma volcanium
Kocabıyık, Semra (Elsevier BV, 2007-01-01)
In this study, some parameters for the production and caseinolytic activity of an extracellular thermostable acid protease from a thermoacidophilic archaeon Thermoplasma volcanium were determined. The highest level of growth and enzyme production were detected at pH 3.0 over an incubation period of 192 h at 60 degrees C. The pH optimum for the acid protease activity was 3.0 and the enzyme was fairly stable over a broad pH range (pH 3.0-8.0). The temperature for maximum activity of the enzyme was 55 degrees ...
A THERMO-STABLE DEHALOGENASE IN THE EXTRACTS FROM PSEUDOMONAS SP (STRAIN-19S)
Kocabıyık, Semra (Springer Science and Business Media LLC, 1989-06-01)
A thermo-stable dehalogenase was demonstrated in the crude extracts from Pseudomonas sp (19S). The ability of the enzyme to catalyze the dehalogenation of various halogen-substituted organic acids was investigated and the highest activity was found with monochloroacetate. The enzyme followed Michael is-Menten kinetics, and the Km for monochloroacetate was O.2mM. Maximum activity was found at pH 10.5 and 60~ The enzyme activity in the cell-free extract was unaffected by EDTA or by Mn, Zn, or Cu ions, but was...
A suppressive oligodeoxynucleotide expressing TTAGGG motifs modulates cellular energetics through the mTOR signaling pathway
Yazar, Volkan; Kilic, Gizem; Bulut, Ozlem; Yildirim, Tugce Canavar; Yagci, Fuat C.; Aykut, Gamze; Klinman, Dennis M.; Gürsel, Mayda; Gursel, Ihsan (Oxford University Press (OUP), 2020-01-01)
Immune-mediated inflammation must be down-regulated to facilitate tissue remodeling during homeostatic restoration of an inflammatory response. Uncontrolled or over-exuberant immune activation can cause autoimmune diseases, as well as tissue destruction. A151, the archetypal example of a chemically synthesized suppressive oligodeoxynucleotide (ODN) based on repetitive telomere-derived TTAGGG sequences, was shown to successfully down-regulate a variety of immune responses. However, the degree, duration and b...
A protective association between catalase and isocitrate lyase in peroxisomes
Yanık, Tülin (2005-03-01)
Glyoxysomes are specialized peroxisomes in germinating seeds, which catalyze many reactions that convert fatty acids into carbohydrates thus generating H2O2. They are characterized by the presence of catalase (CAT, E.C. 1.11.1.6) in their matrix which protects cells from oxidative stress. Here, we investigated the possibility that a protein can be protected from oxidative damage by its association with CAT. We purified peroxisomal CAT from germinating castor beans by ion exchange, gel filtration, and hydrox...
A Berzelius Reagent, Phosphorus Decasulfide (P4S10), in Organic Syntheses
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S. Kocabıyık, “A Thermophilic Extracellular Acid Protease from Thermoplasma volcanium,” 2002, vol. 269, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72065.