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Immunolocalization of tubulin isoforms and post-translational modifications in the protists Tritrichomonas foetus and Trichomonas vaginalis.
Histochemistry and Cell Biology ( IF 2.3 ) Pub Date : 2001-08-02 , DOI: 10.1007/s004180100285
L C Lopes 1 , K C Ribeiro , M Benchimol
Affiliation  

In the present report we show the distribution of multiple tubulin isoforms in Trichomonas vaginalis and Tritrichomonas foetus, flagellated parasitic protists of the urogenital tracts of human and cattle, respectively, using immunofluorescence and immunoelectron microscopy. We used several monoclonal and polyclonal anti-tubulin antibodies from different sources and recognizing variant tubulin isoforms. Our results demonstrate that: (1) there is a heterogeneous distribution of the different tubulin isoforms in the main microtubular cell structures, such as axostyle, flagella, basal bodies, and mitotic spindle, (2) the axostyle-pelta junction is a structure with high affinity for glutamylated tubulin antibodies in T. foetus, (3) the spindle labeling is positive to anti-glutamylated tubulin and anti-alpha-tubulin (TAT1 and purchased from Amersham) antibodies in T. vaginalis but it is negative in T. foetus, (4) the nuclear matrix and the cytosol presented positive reaction using glutamylated and TAT1 (anti-alpha-tubulin) antibodies only in T. vaginalis, and (5) the Golgi complex exhibited staining using the glutamylated tubulin antibody. The present data corroborate with the idea of the existence of a heterogeneous population of microtubules in these protists and of a subset of intracytoplasmic microtubules. Microtubule diversity may reflect distinct tubulins, diverse microtubule-associated proteins, or a combination of both.

中文翻译:

在原生动物Tritrichomonas胎儿和阴道毛滴虫中,微管蛋白亚型的免疫定位和翻译后修饰。

在本报告中,我们使用免疫荧光和免疫电子显微镜分别显示了人和牛泌尿生殖道的鞭毛寄生虫原生动物阴道毛滴虫和毛滴虫中的多种微管蛋白同工型的分布。我们使用了几种来自不同来源的单克隆和多克隆抗微管蛋白抗体,并识别出不同的微管蛋白同工型。我们的结果表明:(1)在主要微管细胞结构(如轴突,鞭毛,基体和有丝分裂纺锤体)中,不同微管蛋白同种型存在异质分布;(2)轴突-骨膜连接是具有以下结构的结构:对T. foetus中的谷氨酰微管蛋白抗体具有高亲和力,(3)梭状芽胞杆菌标记对阴道丁酸杆菌中的抗谷氨酰化微管蛋白和抗α-微管蛋白(TAT1购自Amersham)抗体呈阳性,但在胎儿丁形瘤中呈阴性;(4)呈递的核基质和胞浆仅在阴道锥虫中使用谷氨酰化和TAT1(抗α-微管蛋白)抗体的阳性反应,和(5)使用谷氨酰化微管蛋白抗体的高尔基复合体表现出染色。本数据证实了这些原生生物中存在异质性微管群体以及胞浆内微管子集的想法。微管多样性可能反映了不同的微管蛋白,不同的微管相关蛋白或两者的组合。(4)仅在阴道锥虫中使用谷氨酰化和TAT1(抗α-微管蛋白)抗体,核基质和细胞质呈阳性反应;(5)使用谷氨酰化微管蛋白抗体,高尔基复合体表现出染色。本数据证实了这些原生生物中存在微管异质群体以及胞浆内微管子集的想法。微管多样性可能反映不同的微管蛋白,不同的微管相关蛋白或两者的组合。(4)仅在阴道锥虫中使用谷氨酰化和TAT1(抗α-微管蛋白)抗体,核基质和细胞质呈阳性反应;(5)使用谷氨酰化微管蛋白抗体,高尔基复合体表现出染色。本数据证实了这些原生生物中存在异质性微管群体以及胞浆内微管子集的想法。微管多样性可能反映不同的微管蛋白,不同的微管相关蛋白或两者的组合。
更新日期:2019-11-01
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