Abstract:a b s t r a c tA novel luciferase from Benthosema pterotum, collected from Port of Jask, close to Persian Gulf, was purified for the first time, using Q-Sepharose anion exchange chromatography. The molecular mass of the novel enzyme, measured by SDS-PAGE technique, was about 27 kDa and its K m value is 0.4 lM; both values are similar to those of other coelenterazine luciferases. B. pterotum (BP) luciferase showed maximum intensity of emitted light at 40°C, in 20 mM Tris buffer, pH 9 and 20 mM magnesium concent… Show more
“…These data clearly indicate that the sensitivity of the enzyme declines against the inhibitory effects of bivalent metal ions through the process of immobilization. Such protection may be due to masking of binding sites on the enzyme as well as the diffusion limitations [27]. Probably bivalent metal ions react nonspecifically with the protein hydrophobic groups, resulting in salting out of these residues from the surface into the interior of the enzyme macromolecule [28,29] but more extended research is needed in order to draw the exact mechanism.…”
Section: Effect Of Bivalent Metal Ions On the Activity Of Free And Immentioning
“…These data clearly indicate that the sensitivity of the enzyme declines against the inhibitory effects of bivalent metal ions through the process of immobilization. Such protection may be due to masking of binding sites on the enzyme as well as the diffusion limitations [27]. Probably bivalent metal ions react nonspecifically with the protein hydrophobic groups, resulting in salting out of these residues from the surface into the interior of the enzyme macromolecule [28,29] but more extended research is needed in order to draw the exact mechanism.…”
Section: Effect Of Bivalent Metal Ions On the Activity Of Free And Immentioning
“…The specificities of enzymes and the abilities to enhance reaction rates promise improvements in many applications. Improvements in enzyme stability can enable further practical applications [2]. There are several strategies to increase stability of an enzyme including immobilization, chemical modification and engineering of the protein and/or its medium.…”
“…The enormous biodiversity in the marine ecosystems provides a huge natural reservoir for novel and useful biocatalysts [99,100]. This article has provided many examples of SOD from marine sources which are being used as successful biocatalysts.…”
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