Phospholipase C (phosphatidylcholine cholinephosphohydrolase, EC 3.1.4.3) is a bacterial enzyme widely used in membrane and phospholipid studies. For such studies the highest possible degree of purity is required. Both the Bacillus cereus and the Clostridium perfringens enzymes have been purified to apparent homogeneity using conventional techniques [l-3]. However, using a phospholipase C-hyper...

Hypoxanthine-guanine phosphoribosyltransferase (EC 2.4.2.8) has been purified 23,000-fold from normal human erythrocytes. The purification includes affinity chromatography on a GMP column. The subunit molecular weight of the enzyme obtained from this purification is 24,000. The finding of four protein species after cross-linkage of the highly purified enzyme with dimethylsuberimidate, dimethyla...

PARTIAL PURIFICATION AND PROPERTIES OF A PROTEOLYTIC ENZYME OF HUMAN SERUM. L. F. Remmert and P. P. Cohen. From the Laboratory of Physiological Chemistry, University of Wisconsin, Madison, Wis. J. Biol. Chem. i8i.’ 431-448, 1949. A method of partial purification of plasminogen is described and the suggestion is made that human serum contains only one proteolytic enzyme that is activated by stre...

In this study, Rhizomucor miehei ?-1,3-1,4-glucanase gene was expressed under the regulation of AOX1 promoter in Pichia pastoris expression system, and clone providing highest production level determined. The codon-optimized ligated into vector pPICZ?A transferred competent P. KM71H cells. Thirty transformants were selected from plates containing different concentrations zeocin cultured test tu...

Benzyl Alcohol Dehydrogenase (BADH) is an important enzyme for hydrocarbon degradation, which can oxidize benzyl alcohols to aldehydes, while being capable of catalyzing a reversible reaction by reducing benzaldehyde. BADH is a member of medium chain alcohol dehydrogenases, in which zinc and NAD are essential for enzyme activity. This paper describes the expression, purification, and characteri...

Pseudomonas aeruginosa BBRC-10036 was used for lipase production. The organism secreted the enzyme extracellulary. In order to purify the enzyme, precipitation was done first, and then this lipase has been purified by Ion exchange Chromatography leading to 2.3-fold purification and 11.47% recovery. Lipase from P.aeruginosa was entrapped into Ca-alginate gel beads and effect of independent varia...