Enzymes in Recombinant Proteins

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Lipase 20 recombinantly expressed in P. pastoris comes in a spray-dried formulation. It has its pH optimum at 7-8. Lipases belong to the family of esterases and naturally act on triglycerides at lipid-water interfaces catalyzing hydrolytic reactions, esterifications and transesterification reactions in industrial and food applications. Lipase 20 was shown to hydrolyze p-Nitrophenyl esters of butyrate (3 % activity compared to octanoate), octanoate (100 %), laurate (85 %), palmitate (52 %), stearate (29 %), arachidate (22 %) and behenate (8 %).

β-Glucuronidase (EC 3.2.1.31) is an enzyme that hydrolyzes glucuronides. It can also be used to cleave benzodiazepine and steroid conjugates. One unit of β-Glucuronidase will hydrolyze a chromogenic substrate mimic 4-nitrophenyl-β-D-glucuronide to produce 1.0 μmole of 4-nitrophenol per minute at pH 5.0 and 37 °C.

DNA ligase (ATP) is an enzyme (EC 6.5.1.1) that ligates DNA strands, repairing nicks in double-standed DNA and coupling blunt-ended or cohesive DNA fragments. It requires 3′ hydroxyl and 5′ phosphate nucleoside ends for ligation and ATP as a cofactor.

Sphingomyelinase (SMase, Sphingomyelin phosphodiesterase, systematic name sphingomyelin cholinephosphohydrolase; EC 3.1.4.12) is an enzyme that hydrolyses sphingomyelin into phosphocholine and ceramide. One unit of sphingomyelinase will hydrolyze 1.0 µmole of chromogenic substrate analogue per minute at pH 7.4 and 37 °C.

L-Leucine dehydrogenase (Leucine dehydrogenase, systematic name L-leucine:NAD+ oxidoreductase (deaminating); EC 1.4.1.9) is an enzyme that catalyzes the following reaction:  L-leucine + H2O + NAD+ ⇌ 4-methyl-2-oxopentanoate + NH3 + NADH + H+  One unit of L-Leucine dehydrogenase will convert 1.0 µmole of L‑leucine into 4-methyl-2-oxopentanoate per min at pH 10.5 and 37 °C in the presence of NAD+. The enzyme requires NAD+ as a cofactor, it is available here.

20mg/ml aq. solution.  Proteinase K is used for the general digestion of proteins and removal of protein contamination in nucleic acids. Addition of Protease K also stabilizes nucleic acids but degrading any nucleases present. Proteinase K is active in wide range of pH range, in the presence of SDS, urea and Guanidinium chloride at low to moderate concentrations. Proteinase K is also known under names of protease K and endopeptidase K.

Beta-lactamase enzyme targeting beta-lactam antibiotics

Lipase 14 recombinantly expressed in E. coli comes in a spray-dried formulation. It has its pH optimum at 6-8 and temp. optimum at 30-40°C. Lipases belong to the family of esterases and naturally act on triglycerides at lipid-water interfaces catalyzing hydrolytic reactions, esterifications and transesterification reactions in industrial and food applications. Lipase 14 was shown to hydrolyze p-Nitrophenyl esters of butyrate (74 % activity compared to octanoate), octanoate (100 %), laurate (8 %), palmitate (5 %), stearate (4 %), arachidate (1 %) and behenate (0.6 %).

Lipases belong to the family of esterases and naturally act on triglycerides at lipid-water interfaces. Lipases/esterases can be used as versatile tools in hydrolytic reactions, esterifications and transesterification reactions in industrial and food applications.