8 results about "Alanine" patented technology

A composition includes at least one biologically active agent covalently attached to a first polymerizing molecule that is adapted to undergo a free radical polymerization. The first polymerizing molecule retains the ability to undergo free radical polymerization after attachment of the bioactive agent thereto. The first polymerizing molecule is preferably biocompatible. The polymerizing molecule can, for example. be dihydroxyphenyl-L-alanine (DOPA) or tyrosine. The composition can also include a second component synthesized by reacting at least one core molecule having a plurality of reactive hydrogen groups with at least one multi-isocyanate functional molecule to create a conjugate including terminal isocyanate groups. The conjugate molecule is reacted with a second polymerizing molecule that is adapted to undergo a free radical polymerization. The second polymerizing molecule includes a reactive hydrogen to react with the isocyanate groups of the conjugate. The second polymerizing molecule retains the ability to undergo the free radical polymerization after reaction with the conjugate. In several embodiments, the first polymerizing molecule and the second polymerizing molecule are the same and dihydroxyphenyl-L-alanine (DOPA) or tyrosine.

The invention discloses a tyrosine decarboxylase mutant and a gene and application thereof. The mutant is obtained after serine at the site 586 of tyrosine decarboxylase which comes from lactobacillus brevis and has an amino acid sequence shown as SEQ ID No:1 in a sequence table is substituted by alanine. The specific activity of the tyrosine decarboxylase mutant on the substrate tyrosine is 2.23 times that of wild-type tyrosine decarboxylase, and the Km value on the substrate is 72.4% that of the wild-type tyrosine decarboxylase. The tyrosine decarboxylase mutant is more suitable for preparation of tyramine products than the wild-type tyrosine decarboxylase and has a good industrial development prospect.

The invention discloses a mutation typed ChK2 protein with amino sequence as SEQ ID NO:2, wherein the 249th lysine is mutated into alanine; the mutation ChK2 protein can be NF-kB channel inhibitor.

The invention discloses a mutant for cellobiohydrolase. The mutant is obtained by mutating amino acid of at least one selected from the group consisting of 133rd, 165th and 183rd sites of the cellobiohydrolase with an amino acid sequence of SEQ ID NO.1 into alanine. According to the invention, a mutant protein is obtained by performing protein engineering transformation on the cellobiohydrolase. The mutant provided by the invention has higher enzyme activity under same conditions, can greatly improve the degradation efficiency of cellulose, and promotes application in the field of cellulose degradation.

The invention discloses antistatic foaming tipping paper printing ink, and the printing ink comprises the following components by weight: 7.15% of calcium carbonate; 27.40% of pigments; 2.12% of rosin; 48.17% of alcohol; 2.82% of dibutyl ester; 1.88% of propylene glycol methyl ether; 4.24% of aldehyde ketone resin; 2.1% of alanine salts; 3% of epoxy resin; and 1.12% of additives. Tipping paper printed by the antistatic foaming tipping paper printing ink has accidented pictures and texts, and strong stereoscopic sense, has the stereoscopic effect of hot-printed characters by hot-stamping tipping paper, and can meet the requirements of people for the exquisite printing of tipping paper.

The present invention relates to a preparation method of fragrance-type tobacco spices, which comprises the following preparation steps: taking the following raw materials for use: blank cigarettes (cut tobacco weight 0.6 g): provided by the Technology Center of Anhui China Tobacco Industry Co., Ltd.; fresh and high-quality Hainan pineapple Provided by Wuxi Chaoyang Group; anhydrous glucose, D-fructose, sucrose, malonic acid, anhydrous ethanol, anhydrous methanol, proline, valine, glycine, threonine, lysine, glutamic acid, Partic acid, alanine, leucine, isoleucine, serine, tyrosine: all are analytically pure, provided by Sinopharm Group Chemical Reagent Co., Ltd.; the fragrance type tobacco flavor prepared by the method of the present invention, except In addition to the obvious burnt sweet aroma, it can also produce a light roasted aroma, dried rose aroma and fruity aroma, and the whole method has simple process steps, can be industrialized and has strong adaptability.