Repurposing the 3‐Isocyanobutanoic Acid Adenylation Enzyme SfaB for Versatile Amidation and Thioesterification
作者:Mengyi Zhu、Lijuan Wang、Jing He
DOI:10.1002/anie.202010042
日期:2021.1.25
molecules with novel skeletons, but also to identify the enzymes that catalyze diverse chemical reactions. Exploring the substrate promiscuity and catalytic mechanism of those biosynthetic enzymes facilitates the development of potential biocatalysts. SfaB is an acyladenylate‐forming enzyme that adenylates a unique building block, 3‐isocyanobutanoic acid, in the biosynthetic pathway of the diisonitrile
[EN] POLYMER-BASED PROTEIN ENGINEERING METHODS TO RATIONALLY TUNE ENZYME ACTIVITY, PH-DEPENDENCE AND STABILITY<br/>[FR] TECHNIQUES D'INGÉNIERIE DES PROTÉINES FAISANT APPEL À UN POLYMÈRE POUR AJUSTER RATIONNELLEMENT L'ACTIVITÉ, LA DÉPENDANCE VIS-À-VIS DU PH ET LA STABILITÉ DES ENZYMES
申请人:CARNEGIE MELLON INIVERSITY
公开号:WO2014176279A1
公开(公告)日:2014-10-30
Using a novel water-soluble, active ester amide-containing functionalized controlled radical polymerization initiator, stimuli responsive polymers have been grown from the surface of a protein, exemplified by chymotrypsin or any protein having surface amino acids that will covalently bind to the active ester amide-containing functionalized initiator. It is shown that changes in temperature or pH can change the conformation of the polymer surrounding the enzyme, which in turn enabled the rational tailoring of enzyme activity and stability. This method has afforded an increase in the activity and stability of the enzyme by an order of magnitude at pH's where the enzyme is usually inactive or unstable. Multimodal temperature responsive protein-block copolymer conjugates are described.
Processes for the preparation of triazinones and condensed triazinones, and compounds so obtained
申请人:GLAXO GROUP LIMITED
公开号:EP0009384A1
公开(公告)日:1980-04-02
Compounds of the formula (I)
(in which X represents HS- or a group R,R2N- wherein R, and R2 which may be the same or different represent hydrogen or a straight or branched chain alkyl group containing from 1 to 4 carbon atoms or a benzyl group and R3 represents a C3-2 alkyl group or a C3-2 cycloalkyl group) are prepared by reacting an α-ketoester of the formula (II)
(in which Alk represents an alkyl group) or a precursor thereof with a compound of the formula (III)
The precursor of the compound of formula (II) may be a mixture of isomeric enol esters
The compounds of formula (I) may be converted into compounds of formula (VIII)
in which R, and R2 which may be the same or different represent hydrogen or a straight or branched chain alkyl group containing from 1 to 4 carbon atoms, and R3 is as defined above.
An object of the present invention is to provide a moisturizer that can sufficiently promote the production of moisturizing-related proteins and can achieve sufficient moisturizing effect. In other words, the present invention provides a moisturizer including an acyl neutral amino acid involving an acyl group having a carbon atom number of 2 to 18 or a salt thereof, and a cosmetic including the moisturizer. The moisturizer and the cosmetic of the present invention can promote the production of one or more moisturizing-related proteins selected from the group consisting of filaggrin, involucrin, transglutaminase 1, keratin 10, and loricrin.
Moisturizers including an acyl neutral amino acid having an acyl group with a carbon atom number of 2 to 18, and salts thereof, and cosmetics containing such a moisturizer promote the production of moisturizing-related proteins, such as filaggrin, involucrin, transglutaminase 1, keratin 10, and loricrin, and provide a moisturizing effect.