P9792
Phytase from Aspergillus ficuum
lyophilized powder, 1-5 units/mg solid (as phosphatase activity)
Synonym(s):
3-Phytase, myo-Inositol-hexakisphosphate 3-phosphohydrolase
form
lyophilized powder
specific activity
1-5 units/mg solid (as phosphatase activity)
storage temp.
−20°C
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Analysis Note
May contain glucosidases and phosphatases.
Other Notes
One unit will liberate 1.0 μmole of inorganic P from 4.2 × 10-2 M Mg·K phytate per min at pH 2.5 at 37 °C.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Regulatory Information
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G C Irving et al.
Journal of bacteriology, 112(1), 434-438 (1972-10-01)
The fungus Aspergillus ficuum NRRL 3135 is known to produce an extracellular nonspecific orthophosphoric monoester phosphohydrolase (EC 3.1.3.2) with a pH optimum of 2.0, as well as an extracellular myo-inositol hexaphosphate phosphohydrolase (EC 3.1.3.8; phytase) with pH optima of 2.0
L Jermutus et al.
Journal of biotechnology, 85(1), 15-24 (2001-02-13)
Thermostability is a key feature for commercially attractive variants of the fungal enzyme phytase. In an initial set of experiments, we restored ionic interactions and hydrogen bonds on the surface of Aspergillus terreus phytase, which are present in the homologous
Molecular and physiological characterisation of a 3-phytase from soil bacterium Klebsiella sp. ASR1.
A Sajidan et al.
Applied microbiology and biotechnology, 65(1), 110-118 (2004-01-17)
Klebsiella sp. strain ASR1 isolated from an Indonesian rice field is able to hydrolyse myo-inositol hexakis phosphate (phytate). The phytase protein was purified and characterised as a 42 kDa protein accepting phytate, NADP and sugar phosphates as substrates. The corresponding
Nada M Tamim et al.
Journal of agricultural and food chemistry, 51(16), 4687-4693 (2004-01-07)
Phytate phosphorus (PP) hydrolysis by a 3-phytase was studied in vitro at pH 2.5 and 6.5 with either 0, 1.0, 4.0, or 9.0 g of Ca/kg diet, or 0, 1.0, 5.0, 7.5, or 10.0 g/kg diet of micro-mineral premix added
Duane F Berry et al.
Bioorganic & medicinal chemistry letters, 15(12), 3157-3161 (2005-05-10)
A novel approach for measuring phytase activity is presented. We have developed a new chromophoric substrate analog of phytic acid, 5-O-[6-(benzoylamino)hexyl]-d-myo-inositol-1,2,3,4,6-pentakisphosphate that permits direct measurement of the phosphate ester bond-cleavage reaction using HPLC. This compound, along with its dephosphorylated T-phosphatidylinositol
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