最重要的流感病毒靶标之一是 RNA 依赖性 RNA 聚合酶酸性 N 末端 (PA N ) 核酸内切酶,它是病毒复制机制的关键组成部分。为了抑制这种金属酶的活性,小分子抑制剂采用与双核 Mn 2+活性位点配位的金属结合药效团 (MBP)。在这项研究中,检查了几种金属结合电子等排物 (MBI),其中羟基吡啶酮 MBP 的羧酸部分被其他基团取代,以调节化合物的物理化学性质。使用基于 FRET 的酶促测定评估 MBI 抑制 PA N的能力,并使用 X 射线晶体学确定它们在 PA N中的结合模式。
Method for preparing hydroxypicolinic scid derivatives
申请人:Bacque Eric
公开号:US20060040995A1
公开(公告)日:2006-02-23
The invention concerns a method for preparing compounds of general formula (I) wherein: n, Q
1
, Q
2
, X
1
, X
2
, Y and Z are as defined in the description.
本发明涉及一种制备通式(I)化合物的方法,其中:n、Q1、Q2、X1、X2、Y和Z如描述中所定义。
Method for modifying a property of a protein
申请人:Nishio Yosuke
公开号:US20050233308A1
公开(公告)日:2005-10-20
A property of a protein is modified by the following steps: (a) selecting 1000 or more genes from the genome of a first microorganism, and selecting 1000 or more genes from the genome of a second microorganism, wherein the genes from the first microorganism are orthologs to the genes from the second microorganism, and wherein the second microorganism is closely related to the first microorganism, but grows differently under at least one optimum growth condition when compared with the first microorganism, (b) comparing an amino acid sequence encoded by a gene from the first microorganism to an amino acid sequence encoded by the orthologous gene from the second microorganism, (c) detecting substitutions between the amino acid sequence encoded by a gene from the first microorganism and the amino acid sequence encoded by a gene from the second microorganism for each pair of orthologous genes, (d) compiling the detected amino acid substitutions for each amino acid substitution type, (e) calculating the frequency of each amino acid substitution type, wherein for each detected amino acid substitution type, a correction is made by subtracting the total number of substitution types which occur from the first microorganism to the second microorganism from the total number of the same substitution type which occurs in the reverse direction, or from the second microorganism to the first microorganism, (f) identifying and labelling the amino acid substitutions which occur at a high frequency as amino acid substitutions which are involved in said optimum growth condition, and (g) introducing one or more of the amino acid substitutions identified in (f) into the gene encoding the protein to modify a property of the protein.
A method for improving the thermostability of a protein includes introducing, into the protein, two or more amino acid substitutions selected from the group consisting of: (i) substitution of an arginine residue for a lysine residue, (ii) substitution of a threonine residue for a serine residue, and (iii) substitution of an alanine residue for a serine residue.
申请人:National Institute of Technology and Evaluation
公开号:EP1489174B1
公开(公告)日:2015-08-12
Biomarkers Of Metabolic Responses To Hepatotoxicants And Carcinogens
申请人:Berger Alvin
公开号:US20080176266A1
公开(公告)日:2008-07-24
Methods for the measurement and prediction of response to hepatotoxicants and carcinogens through the detection of metabolites in a mammal are provided. The metabolites can be used as biomarkers, including efficacy biomarkers, surrogate biomarkers, and toxicity biomarkers. The methods find use for early prediction of toxicity, target identification/validation, and monitoring of drug efficacy.