摘要:
A covalent conjugate of a 4′-hydroxyazobenzene-2-carboxylic acid derivative (HABA) and an avidin-type molecule, of the formula: wherein A is (CH2)n or —CH═CH—, wherein n is an integer from 0–10; B is (CH2)n wherein n is an integer from 2 to 10; m is zero or 1; and Av is the residue of an avidin-type molecule selected from the group comprising native egg-white avidin, recombinant avidin, deglycosylated avidins, bacterial streptavidin, recombinant streptavidin, truncated streptavidin and other derivatives of said avidin-type molecules. These HABAylated avidins are red colored in the quinone configuration and can be used in many applications in the avidin-biotin technology.
摘要翻译:4'-羟基偶氮苯-2-羧酸衍生物(HABA)和抗生物素蛋白型分子的共价缀合物,其分子式如下:其中A是(CH 2 N 2)n SUB >或-CH-CH-,其中n是0-10的整数; B是(CH 2)n N n其中n是2至10的整数; m为零或1; Av是选自天然蛋白抗生物素蛋白,重组抗生物素蛋白,去糖基化抗体,细菌链霉抗生物素蛋白,重组链霉抗生物素蛋白,截短的链霉抗生物素蛋白和所述抗生物素蛋白型分子的其它衍生物的组的抗生物素蛋白型分子的残基。 这些HABA化的avidins在醌配体中是红色的,并且可以用于抗生物素蛋白 - 生物素技术的许多应用。
摘要:
A compound of the formula I: wherein R is H or —N═N-2-carboxyphenyl; A is (CH2)n or —CH═CH—, wherein n is an integer from 0 to 10, or A may also be —CH(COOH)— when R is —N═N-2-carboxyphenyl; and X is a radical selected from the group consisting of: (i) Cl; (ii) COOR1, wherein R1 is p-nitrophenyl or N-succinimidyl; (iii) CONH—NHR2, wherein R2 is H, COO(t-butyl) or COObenzyl; (iv) CONH—[B]—NHR3, wherein R3 is H, COOR1, or CO—[B′]—maleimido, wherein R1 is t-butyl, p-nitrophenyl or N-succinimidyl, and B and B′, the same or different, are (CH2)n wherein n is an integer from 2 to 10; (v) CONH—[B]—COOR4, wherein R4 is H, C1-C8 alkyl, N-succinimidyl; (vi) CONH—[B]—OH; (vii) CONH—[B]—CONH—NHR2, wherein R2 is H, COO(t-butyl) or COObenzyl; and (viii) NHR2, wherein R2 is H, COO(t-butyl) or COObenzyl, when A is —CH(COOH)— and R is —N═N-2-carboxyphenyl. The 4′-hydroxyazobenzene-2-carboxylic acid (HABA) compounds are novel reagents for labeling, isolation and detection of biological molecules.
摘要:
A covalent conjugate of a 4′-hydroxyazobenzene-2-carboxylic acid derivative (HABA) and an avidin-type molecule, of the formula: wherein A is (CH2)n or —CH═CH—, wherein n is an integer from 0-10; B is (CH2)n wherein n is an integer from 2 to 10; m is zero or 1; and Av is the residue of an avidin-type molecule selected from the group comprising native egg-white avidin, recombinant avidin, deglycosylated avidins, bacterial streptavidin, recombinant streptavidin, truncated streptavidin and other derivatives of said avidin-type molecules. These HABAylated avidins are red colored in the quinone configuration and can be used in many applications in the avidin-biotin technology.
摘要翻译:4'-羟基偶氮苯-2-羧酸衍生物(HABA)和抗生物素蛋白型分子的共价缀合物,其分子式如下:其中A是(CH 2 H 2 O) HIL> n SB> 或-CH = CH-,其中n是0-10的整数; B是(CH 2 SB> ) n SB> 其中n是2至10的整数; m为零或1; Av是选自天然蛋白抗生物素蛋白,重组抗生物素蛋白,去糖基化抗体,细菌链霉抗生物素蛋白,重组链霉抗生物素蛋白,截短的链霉抗生物素蛋白和所述抗生物素蛋白型分子的其它衍生物的组的抗生物素蛋白型分子的残基。 这些HABA化的avidins在醌配体中是红色的,可用于许多应用中的抗生物素蛋白 - 生物素技术。 PTEXT>
摘要:
Biotin-binding modified avidin-type molecules are provided in which the essential tyrosine residue in the biotin-binding site is modified in such a way that its pKa is decreased in comparison to the pKa of the unmodified tyrosine residue in the corresponding unmodified avidin-type molecule. The avidin-type molecules include: (i) native egg-white avidin; (ii) recombinant avidin; (iii) deglycosylated forms of avidin; (iv) bacterial streptavidin; (v) recombinant streptavidin; (vi) truncated streptavidin; and (vii) derivatives of (i)-(vi) which are modified at sites other than the essential tyrosine residue. The modification is achieved by substitution at one or both ortho positions to the hydroxy radical of the tyrosine residue by radicals such as nitro, halogen, azo and amino. The modified avidin-type molecules can be used in all applications of the avidin-biotin technology.
摘要:
The invention provides methods for: (a) protecting agricultural crops, particularly fruits and vegetables, against insects, by treating the crops with allicin prior to harvesting; (b) protecting fruits and vegetables from decay and extending the shelf life thereof by treating the fruits and vegetables with allicin after harvesting; and (c) repelling insects such as ants or insects that attack agricultural crops from an object or an area, which comprises treating the object or area with a repelling effective amount of allicin.
摘要:
There are provided bifunctional chelating agents, which are analogues of EDTA, conjugates of same with a variety of haptens and conjugates of such conjugates with haptens with certain metals, forming metal complexes. The metal complexes have a variety of uses, among these various assays for the determination of haptens and macromolecules. There is also provided a process for the production of the above. There are provided radioimmunoassays based on the above conjugates with metal cations.
摘要:
Compounds which are the reaction product of allicin and ACE-inhibiting compounds are useful in treating hypertension, elevated triglycerides, and elevated insulin.
摘要:
Immobilized garlic alliinase wherein the alliinase is chemically, physically or biologically immobilized, is useful in a method for continuous production of allicin. The method comprises adding a solution of alliin as substrate to a column containing the immobilized garlic alliinase and collecting pure allicin in the effluent. The pure allicin is intended for use as food additive or for the preparation of pharmaceutical compositions for the treatment of viral, bacterial, fungal and parasitic infections, high levels of cholesterol and blood lipids, high blood pressure and thrombosis.
摘要:
There are provided novel labelled derivatives, namely .alpha.-difluoromethylornithine tagged with rhodamine or with biotin. These are of value in analysis and in the cytochemical localization of enzymes.