首页> 外文期刊>Journal of Parasitology >BINDING PROPERTIES AND IMMUNOLOCALIZATION OF A FATTY ACID–BINDING PROTEIN IN GIARDIA LAMBLIA
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BINDING PROPERTIES AND IMMUNOLOCALIZATION OF A FATTY ACID–BINDING PROTEIN IN GIARDIA LAMBLIA

机译:贾第鞭毛虫中脂肪酸结合蛋白的结合特性及其免疫原化

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摘要

We describe here a fatty acid–binding protein (FABP) isolated and purified from the parasitic protozoon Giardia lamblia. The protein has a molecular mass of 8 kDa and an isoelectric point of 4.96. A Scatchard analysis of the data at equilibrium revealed a dissociation constant of 3.12 × 10−8 M when the labeled oleic acid was displaced by a 10-fold greater concentration of unlabeled oleic acid. Testosterone, sodium desoxycholate, taurocholate, metronidazol, and α-tocopherol, together with butyric, arachidonic, palmitic, retinoic, and glycocholic acids, were also bound to the protein. Assays with polyclonal antibodies revealed that the protein is located in the ventral disk and also appears in the dorsal membrane, the cytoplasm, and in the vicinity of the lipid vacuoles.
机译:我们在这里描述了一种从寄生原生动物贾第鞭毛虫中分离和纯化的脂肪酸结合蛋白(FABP)。该蛋白质的分子量为8 kDa,等电点为4.96。平衡状态下数据的Scatchard分析显示,当标记的油酸被未标记的油酸浓度提高10倍时,解离常数为3.12×10-8M。睾丸激素,脱氧胆酸钠,牛磺胆酸盐,甲硝唑和α-生育酚,以及丁酸,花生四烯酸,棕榈酸,视黄酸和糖胆酸也都与该蛋白质结合。用多克隆抗体的分析表明该蛋白位于腹盘中,并且也出现在背膜,细胞质和脂质液泡附近。

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