Enzymes dans les Protéines Recombinantes

Glucosyltransferase206-freeze dried is an enzymatic preparation designed for specific biochemical applications. It is derived from microbial sources, where it is produced and purified through advanced biotechnological processes. The enzyme functions by catalyzing the transfer of glucosyl units from donor molecules to specific acceptors, thereby forming glycosidic bonds. This mode of action is crucial in various biosynthetic pathways, particularly in the production of polysaccharides and structural carbohydrates.

Color: beigeForm: lyophilisateProtein content: 0.5 mg/mgThe glucosyltransferase was tested in a glucosylation reaction of a preferred substrate. High conversion after up to 24 h reaction time was observed.

Lipase CalA, wildtype, freeze-dried, recombinant, from Candida antarctica is an enzymatic product, which is a highly purified form of lipase enzyme. It is derived from the yeast species Candida antarctica through recombinant DNA technology, ensuring consistency and purity by expressing the enzyme in a controlled microbial system.

Glucosyltransferase201-freeze dried is an enzymatic preparation that is primarily sourced from bacterial or plant organisms. It functions by catalyzing the transfer of glucose moieties from donor molecules, such as UDP-glucose, to specific acceptor molecules, thus forming glycosidic bonds. This mode of action is crucial in the biosynthesis and modification of polysaccharides and glycoconjugates.

Endonuclease, liquid, food grade is a biochemical enzyme, which is derived from microbial or bovine sources, with precision in hydrolyzing phosphodiester bonds within nucleic acids. This endonuclease cleaves the internal bonds of DNA and RNA, enabling the breakdown of these molecules into smaller nucleotide fragments. Its catalytic action is particularly useful in the controlled degradation of nucleic acids without affecting other macromolecules in the substrate.

Neutral Endopeptidase is an enzymatic product in liquid form, classified as food grade, which is derived from microbial fermentation or animal sources. Its primary mode of action involves the hydrolysis of peptide bonds within proteins, resulting in the breakdown of these macromolecules into smaller peptides and amino acids. This process is facilitated through the enzyme's specificity for neutral pH environments, where it effectively cleaves internal bonds within a protein chain.

Hyaluronidase (EC 3.2.1.35) is an enzyme that cleaves (1→4)-linkages between N-acetylglucosamine and glucuronate. One unit of hyaluronidase will increase turbidimetric absorbance at A600 by 0.330 at pH 5.7 and 37°C in 2mL reaction volume.

Endopeptidase, powder, is a proteolytic enzyme, which is typically derived from microbial, plant, or animal sources, each imparting unique specificities. This enzyme functions by cleaving peptide bonds within polypeptide chains, rather than terminal bonds, thereby facilitating the breakdown of proteins into smaller, more manageable peptide fragments. The mode of action involves recognizing specific amino acid sequences within the substrate, leading to targeted bond hydrolysis.

Proteinase K, high-quality, liquid, recombinant is an advanced enzymatic product, which is a serine protease derived through recombinant DNA technology. It cleaves peptide bonds to facilitate protein digestion with broad substrate specificity. Its robust proteolytic activity is optimal under various conditions, including a wide range of temperatures and pH levels, making it incredibly versatile.

Citrate lyase (also known as ATP citrate synthase, EC 2.3.3.8) is an enzyme that catalyzes the following reaction:citrate + ATP + CoA → oxaloacetate + Acetyl-CoA + ADP + Pi

6-Phosphogluconic dehydrogenase is an enzyme from yeast, which is a key component of the oxidative phase of the pentose phosphate pathway. It catalyzes the oxidative decarboxylation of 6-phosphogluconate to ribulose 5-phosphate, with the concurrent reduction of NADP+ to NADPH. This enzyme is sourced from yeast, a model organism extensively used in biochemical studies due to its eukaryotic nature and ease of genetic manipulation.

Luciferase enzyme from Photinus pyralis (firefly), which catalyzes the oxidation of firefly luciferin. This reaction depends on the presence of oxygen and ATP and causes the bioluminescence seen in fireflies

5′-Nucleotidase (EC 3.1.3.5) is an enzyme that catalyzes hydrolysis of 5' nucleotides, removing the phosphate group:  AMP + H2O ⇌ adenosine + Pi  One unit of 5′-Nucleotidase will generate 1.0 μmole of phosphate ions per minute in the presence of AMP under optimal reaction conditions.

Trypsin (EC 3.4.21.4) is a protease that hydrolyses proteins by cleaving the peptide bond at the carboxyl side of the positively charged amino acid (Lysine or Arginine). Trypsin belongs to a family of serine proteases, as it has a serine in its active site. Trypsin can be inhibited by using trypsin inhibitor Alpha 1 Antitrypsin.

Lipase 03 recombinantly expressed in E. coli comes in a spray-dried formulation. It has its pH optimum at 6-7 and temp. optimum at 20-50°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 03 was shown to hydrolyze p-Nitrophenyl esters of butyrate (100 % activity), octanoate (90 %), laurate (28 %), palmitate (14 %), stearate (9 %), arachidate (2 %) and behenate (3 %).

Lipase 13 recombinantly expressed in E. coli comes in a spray-dried formulation. It has its pH optimum at 6-8 and temp. optimum at 35-45°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 13 was shown to hydrolyze p-Nitrophenyl esters of butyrate (87 % activity compared to octanoate), octanoate (100 %), palmitate (44 %), stearate (21 %) and arachidate (2 %).

o-Glycosidase (O-Glycanase, endo-a-acetylgalactosaminidase, endo-a-N-acetylgalactosaminidase; EC 3.2.1.97) is an enzyme that specifically removes N-acetylgalactosamine disaccharides, that were attached to serine's or threonine's side-chain oxygen (hence o-Glycosidase). One unit of o-Glycosidase will hydrolyze 1.0 mmole of of substrate per minute at 37 °C and pH 5.0.

Penase (Penicillinase) is an enzyme, which is a type of β-lactamase sourced from various bacterial strains capable of deactivating penicillin. It accomplishes this by targeting the β-lactam ring, a crucial structural component of penicillin antibiotics, and hydrolyzing it, thereby neutralizing the antibiotic effect. This enzymatic action is a defense mechanism employed by certain bacteria to survive in environments saturated with penicillin-based antibiotics.

The main protease Mpro is a key protein in the lifecycle of the SARS-CoV-2 virus. Mpro cleaves the viral polyproteins at the C-terminal end of a glutamine residue in recognition sequences containing Leu-Gln-(Ser, Ala, Gly) motifs (Rut et al, 2020).  As SARS-CoV-2 MPro has no closely related homologues in humans, it represents an attractive drug target (Ullrich and Nitsche, 2020). In summary, the Mpro protease is a chymotrypsin-like cysteine protease, requires homodimerisation for proteolytic activity, cleaves the viral polyproteins in 11 distinct sites, exclusively after a glutamine residue. A fluorogenic substrate for Mpro assays is Ac-Abu-Tle-Leu-Gln-AMC.The protein amount or better its concentration in solution is quantified using either A280 (absorption at 280 nm with its specific absorption coefficient) or using the Bradford assay (uses the dye Coomassie Brilliant Blue). Both of these methods quantify the total amount of protein in a sample, no matter what the oligomerization state is.