Anti-HEC1/HEC antibody [EPR5342]

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

HEC1 also known as NDC80 or HEC is an important component of the kinetochore a protein complex importantly involved in chromosome segregation during cell division. It is often referred to as HEC-1 with a molecular mass of approximately 80 kDa. HEC1 is expressed ubiquitously in proliferating cells and it plays an important role in the accurate alignment and segregation of chromosomes during mitosis. The protein is found at centromeres where it is essential for proper attachment of microtubules.

Biological function summary

In the context of cell division HEC1 functions as part of the NDC80 complex a critical ensemble of four proteins that include NUF2 SPC24 and SPC25. This complex is vital for microtubule binding and kinetochore function. HEC1 as a subunit of NDC80 ensures kinetic stability and maintains the structural integrity of the kinetochore during the cell cycle. Its function is necessary for accurate chromosome alignment on the metaphase plate which prevents missegregation and aneuploidy.

Pathways

HEC1 is actively involved in the spindle assembly checkpoint (SAC) a safety mechanism that prevents anaphase onset until all chromosomes are properly aligned. This pathway is important in regulating cell cycle progression and preventing genomic instability. HEC1 also interacts with proteins like BUB1 and MAD2 which are integral to the SAC pathway. HEC1’s associations highlight its role in maintaining mitotic accuracy and integrity in dividing cells.

Associated diseases and disorders

HEC1 has a significant connection to cancer. Aberrant expression or malfunction of HEC1 contributes to chromosomal instability a hallmark of cancer progression. Its interactions with oncogenes and tumor suppressor proteins like TP53 can exacerbate this instability leading to unregulated cell division and tumor growth. Additionally HEC1's role in the cell cycle and proliferation links it to disorders like aneuploidies where chromosome number errors occur further implicating its importance in maintaining chromosomal balance.