Sarcosine oxidase composite screen-printed electrode for sarcosine determination in biological samples
نویسندگان
چکیده
منابع مشابه
Crystal Structure of Heterotetrameric Sarcosine Oxidase
Introduction The concentration of serum creatinine is widely used as an indicator of renal function. Sarcosine oxidase (SO) has been used in the enzymatic determination of creatinine in the clinical laboratory. SO has been isolated from various bacterial strains. It was first purified from Corynebacterium sp. U-96 (SO-U96) and shown to be a heterotetrameric enzyme. SO-U96 is a complex, bifuncti...
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It has been established that the enzyme, sarcosine oxidase, found in the mitochondria of rat liver and elsewhere (I), catalyzes the following over-all reaction (2, 3) : sarcosine + $02 = glycine + serine + HCHO. The cofactor requirements of this reaction have not been established, although Mackenzie (1) has mentioned unpublished results which seemed to indicate that a folic acid deficiency in r...
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A "sarcosine oxidase" was prepared from a creatinine-decomposing strain of Pseudomonas aeruginosa. The enzyme is inactivated by drying, lyophilization, and dialysis against distilled water. No dialyzable cofactor was found. Optimal activity of the enzyme is reached at pH 7.8. Enzyme activity is directly proportional to enzyme concentration and also to substrate concentration up to the point of ...
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The electrochemical oxidation behavior and voltammetric assay of gemifloxacin were investigated using differential-pulse and cyclic voltammetry on a screen-printed carbon electrode. The effects of pH, scan rates, and concentration of the drug on the anodic peak current were studied. Voltammograms of gemifloxacin in Tris-HCl buffer (pH 7.0) exhibited a well-defined single oxidation peak. A diffe...
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ژورنال
عنوان ژورنال: Analytica Chimica Acta
سال: 2014
ISSN: 0003-2670
DOI: 10.1016/j.aca.2014.08.005