F-I-P’ is an intermediary metabolite, which is accumulated during the metabolism of fructose in the liver (4,7). Enzymatic determination of F-l-P in tissue extracts has previously been made with either rat liver aldolase (EC 4.1.2.7) (2) or rabbit muscle F-6-PK (EC 4.1.2.13) (5). Determination with aldolase is more rapid than with F-6-PK, but this enzyme is not commercially available. Determina...

A rapid, sensitive, specific and high through-put enzyme-linked immunosorbant assay (ELISA) methodfor determination of morphine in urine samples using penicillinase as label enzyme has been developed. Noextraction or chromatography was included in this assay procedure. Immunoglobulin (Ig) purified polyclonalanti-bodies against a C6-hemisuccinate derivative of morphine (M-C6-HS...

In 1959, Cooper et al. (1) described the isolation of an enzyme from Polyporus circinatus Fr. which catalyzed the oxidation of galactose by molecular oxygen. MTe have previously described a procedure for the purification of such an enzyme from culture filtrat,es and have shown the reaction product to be D-g&CtOhexodialdose, oxidation occurring at the C-6 rather than the C-l position (2). The pr...

Pepstatin has been shown to be an extremely potent inhibitor of human renin (Ki = 1.3 X lo-lo M). Kinetic analyses by several techniques show reversible interaction of pepstatin with renin and classical noncofipetitive inhibition. The high affinity of pepstatin for renin allows kinetic determination of the molarity of the enzyme in partially purified preparations. This method has been validated...

A quantitative method is described which permits a determination of the relative amount of trypsin or pepsin present in a gelatin-enzyme digestion mixture, provided the gelatin and trypsin solutions are purified. This method is dependent upon the change in viscosity of such solutions. It is found that the time required to cause a given percentage change in the viscosity is nearly inversely prop...

BACKGROUND & OBJECTIVES Reusable biostrip consisting enzymes immobilized onto alkylamine glass beads affixed on plasticized PVC strip for determination of triglyceride (TG) suffers from high cost of beads and their detachments during washings for reuse, leading to loss of activity. The purpose of this study was to develop a cheaper and stable biostrip for investigation of TG levels in serum. ...