background:
MIS12 is part of a complex that plays an essential role in chromosome segregation in vertebrates and contributes to mitotic kinetochore assembly.
Function:
Part of the MIS12 complex which is required for normal chromosome alignment and segregation and for kinetochore formation during mitosis.
Subunit:
Component of the MIS12 complex composed of MIS12, DSN1, NSL1 and PMF1. Also interacts with CASC5, CBX3, CBX5, NDC80 and ZWINT.
Subcellular Location:
Nucleus. Chromosome, centromere, kinetochore. Note=Associated with the kinetochore.
Similarity:
Belongs to the mis12 family.
Database links:
UniProtKB/Swiss-Prot: Q9H081.1
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
细胞周期是细胞最基本的生命活动之一,它通过一系列有序的反应进行分裂,产生两个包含相同遗传物质的子细胞。细胞周期中最核心的事件就是进行遗传物质的复制和分离,即在S期进行DNA的复制,然后在有丝分裂时期将复制的染色体平均分配到子细胞中去。有丝分裂过程中染色体的运动和分离又是通过纺锤体微管和位于染色体着丝粒上的动点之间的协同作用来完成的。
MIS12是一个进化上较为保守的蛋白复合物,人源MIS12复合物由Mis13、Mis14、Mis12和PMF1四个蛋白组成,功能性研究表明它们在动点的组装和染色体的分离中发挥重要作用,但是,目前它们动点定位机制仍不清楚,还有待进一步研究。
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