Solution NMR assignment of the C-terminal domain of human chTOG.

Solution NMR assignment of the C-terminal domain of human chTOG.
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DOI:
10.1007/s12104-018-9812-9
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发表时间:
2018-10
影响因子:
0.9
通讯作者:
Pfuhl M
Pfuhl M
中科院分区:
生物学4区
文献类型:
--
作者:
Rostkova E;Burgess SG;Bayliss R;Pfuhl M

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微管调节蛋白结肠和肝肿瘤过表达基因(chTOG),也称为细胞骨架相关蛋白5(CKAP 5),在组织细胞骨架中起重要作用,特别是在有丝分裂中k-纤维的组装中。最近,我们解剖了迄今为止知之甚少的C-末端的这种蛋白质,发现了两个新的结构域-一个神秘的TOG结构域(TOG 6)和一个较小的,螺旋结构域在非常C-末端。结果表明,C-末端结构域是重要的与TACC结构域在TACC 3的k-纤维的组装过程中的三元复合物,也包括网格蛋白的相互作用。在这里,我们现在给出了chTOG C-末端结构域的溶液NMR归属,这证实了我们早期的预测,即它主要由α-螺旋组成。然而,1H-15 N HSQC光谱的出现表明结构域中存在大量非结构化和可能的蛋白质柔性部分。
The microtubule regulatory protein colonic and hepatic tumor overexpressed gene (chTOG), also known as cytoskeleleton associated protein 5 (CKAP5) plays an important role in organizing the cytoskeleton and in particular in the assembly of k-fibres in mitosis. Recently, we dissected the hitherto poorly understood C-terminus of this protein by discovering two new domains—a cryptic TOG domain (TOG6) and a smaller, helical domain at the very C-terminus. It was shown that the C-terminal domain is important for the interaction with the TACC domain in TACC3 during the assembly of k-fibres in a ternary complex that also includes clathrin. Here we now present the solution NMR assignment of the chTOG C-terminal domain which confirms our earlier prediction that it is mainly made of α-helices. However, the appearance of the 1H–15N HSQC spectrum is indicative of the presence of a considerable amount of unstructured and possibly flexible portions of protein in the domain.
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