[EN] BINDING-SITE MODIFIED LECTINS AND USES THEREOF<br/>[FR] LECTINES DE SITE DE LIAISON MODIFIÉES ET USAGE CORRESPONDANT
申请人:SMARTCELLS INC
公开号:WO2010088261A1
公开(公告)日:2010-08-05
In one aspect, the disclosure provides cross-linked materials that include multivalent lectins with at least two binding sites for glucose, wherein the lectins include at least one covalently linked affinity ligand which is capable of competing with glucose for binding with at least one of said binding sites; and conjugates that include two or more separate affinity ligands bound to a conjugate framework, wherein the two or more affinity ligands compete with glucose for binding with the lectins at said binding sites and wherein conjugates are cross-linked within the material as a result of non-covalent interactions between lectins and affinity ligands on different conjugates. These materials are designed to release amounts of conjugate in response to desired concentrations of glucose. Depending on the end application, in various embodiments, the conjugates may also include a drug and/or a detectable label.
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] METHOD FOR MODIFICATION OF ORGANIC MOLECULES<br/>[FR] PROCÉDÉ DE MODIFICATION DE MOLÉCULES ORGANIQUES
申请人:UNIV NANYANG TECH
公开号:WO2012158122A1
公开(公告)日:2012-11-22
The present invention is directed to a method of alkylating a thiol group (R-S-H) or seleno group (R-Se-H) in a target molecule wherein the method comprises: reacting a target molecule comprising at least one thiol group with a compound of formula (I) or (II): wherein R is an acetyl group or any other acyl group or is a group comprising any one of: or wherein R in formula (II) can also be an alkyl group; and wherein R' is selected from a group consisting of a hydrogen, a methyl group and an ethyl group.
Molecular Rotations of N.ALPHA.-Acyl-L-lysines at Various pH Values.
作者:Yasuhiro SOEJIMA、Aru AKAGI、Nobuo IZUMIYA
DOI:10.1248/cpb.42.2618
日期:——
Molecular rotations of Nα-acyl-L-lysines were determined in water and in water containing various amounts of HCl or NaOH. The acyl groups were formyl, acetyl, propionyl, and butyryl. Each Nα-acyl-L-lysine exhibited more negative rotation in HCl or NaOH solution than in water. The plot of molecular rotation against amount of HCl or NaOH resembled that of a D-α-amino acid even though Nα-acyl-lysine was of L-form. The reason for this is discussed from the standpoint of steric factors. Nε-Acyl-L-lysines corresponding to the Nα-acyl-L-lysines were synthesized as reference compounds. It was found that water-soluble Nε-acyl-L-lysines can be easily prepared by acylation of the Cu complex solution of L-lysine hydrochloride in the presence of triethylamine. The molecular rotation plots for Nε-acyl-L-lysines were typical of L-α-amino acids.
The present disclosure provides a cross-linked material comprising conjugates which include two or more separate affinity ligands bound to a non-polymeric framework, wherein the molecular weight of the non-polymeric framework is less than 10,000 Da; and multivalent cross-linking agents that non-covalently bind the affinity ligands of the conjugates and thereby cross-link the conjugates to form a cross-linked material, wherein the non-covalent bonds between the multivalent cross-linking agents and the affinity ligands are competitively dissociated in the presence of excess amounts of a target molecule. The present disclosure also provides methods of making and methods of using these materials. In other aspects, the present disclosure provides exemplary conjugates including conjugates for use in glucose responsive cross-linked materials.