In vitro translation of type A Clostridium botulinum neurotoxin heavy chain and analysis of its binding to rat synaptosomes.

In vitro translation of type A Clostridium botulinum neurotoxin heavy chain and analysis of its binding to rat synaptosomes.
复制标题

A型肉毒杆菌神经毒素重链的体外翻译及其与大鼠突触体的结合分析。

DOI:
10.1023/a:1020655701852
复制
发表时间:
1999
期刊:
Journal of protein chemistry
影响因子:
--
通讯作者:
Singh,BR
Singh,BR
中科院分区:
--
文献类型:
--
作者:
Li,L;Singh,BR

文献摘要

参考文献

相似文献

肉毒神经毒素(BoNT)是抑制外周胆碱能突触释放神经递质的高效毒素。BoNT由通过二硫键连接的变性轻链(LC; 50 kDa)和结合/易位重链(HC; 100 kDa)组成。用聚合酶链反应(PCR)扩增了肉毒梭菌重链基因(BoNT/A HC)的DNA片段。coliPET-15 b载体中,通过抗BoNT/A多克隆抗体鉴定体外翻译的[35 S]BoNT/A HC,并用于研究毒素与大鼠突触体的结合。[35 S]BoNT/A HC与突触体的结合被500倍过量的冷BoNT/A以及与胰蛋白酶孵育所消除。用抗BoNT/A或GT 1b处理BoNT/A HC阻断其与突触体的结合。放射性BoNT/A HC在大鼠和牛突触体制备物中识别对应于150(P150)、120(P120)和75(P75)kDa分子量的三种蛋白质。这些结果代表功能性全长BoNT重链的首次成功表达。
Botulinum neurotoxins (BoNTs) are highly potent toxins that inhibit neurotransmitter release from peripheral cholinergic synapses. BoNTs consist of a toxifying light chain (LC; 50 kDa) and a binding/translocating heavy chain (HC; 100 kDa) linked through a disulfide bond. A DNA fragment encoding type AClostridium botulinumheavy chain (BoNT/A HC) was amplified by polymerase chain reaction and cloned into anE. coliPET-15b vector.In vitrotranslated [35S]BoNT/A HC was identified by anti-BoNT/A polyclonal antibodies, and was used to investigate the binding of the toxin to rat synaptosomes. The binding of [35S]BoNT/A HC to synaptosomes was abolished by 500-fold excess of cold BoNT/A, and by incubation with trypsin. Treatment of BoNT/A HC with anti-BoNT/A or GT1bblocked its binding to synaptosomes. The radioactive BoNT/A HC recognized three proteins corresponding to a molecular mass of 150 (P150), 120 (P120), and 75 (P75) kDa in rat and bovine synaptosomal preparations. These results represent the first successful expression of functional full-length BoNT heavy chain.
人血浆 α2-巨球蛋白的物理和化学特性。
DOI: --
发表时间: 1978
影响因子: 4.1
作者:
P. Hall;R. Roberts
通讯作者: R. Roberts
DOI: 10.1073/pnas.84.10.3224
发表时间: 1987-05-01
影响因子: 11.1
作者:
EATON, DL;FLESS, GM;SCANU, AM
通讯作者: SCANU, AM
教旧教条新技巧
DOI: --
发表时间: 1987
期刊: Nature
影响因子: 64.8
作者:
Michael S. Brown;J. Goldstein
通讯作者: J. Goldstein
DOI: --
发表时间: 1988
影响因子: 4.6
作者:
Scanu,AM
通讯作者: Scanu,AM
脂蛋白 Lp(a) 和载脂蛋白(a) 的异质性。
DOI: 10.1093/clinchem/34.6.1036
发表时间: 1988
期刊: Clinical chemistry
影响因子: 9.3
作者:
G F Grinstead;R D Ellefson
通讯作者: R D Ellefson