Kinesin family member 20A (KIF20A) (KIF20A)

Kinesin family member 20A (KIF20A) is a molecular motor protein belonging to the kinesin-6 family that plays a critical role in cell division and cytokinesis. As a mitotic kinesin, KIF20A is essential for chromosome passenger complex-mediated cytokinesis and midbody abscission, functioning as a microtubule plus end-directed motor that transports cargo along microtubules. The protein exhibits atypical mechanochemical properties compared to other kinesins, characterized by low motility and unusual coupling between its nucleotide- and microtubule-binding sites, features driven by unique structural elements including an extended L6 insertion and longer microtubule-binding loops. Beyond its mitotic functions, KIF20A is involved in Golgi-derived vesicle transport through interactions with RAB6A and RAB6B GTP-bound forms, contributing to retrograde transport of Golgi membranes. KIF20A has emerged as a promising anti-cancer therapeutic target, particularly in pancreatic cancer and gliomas, with downregulation shown to attenuate cancer cell growth. The protein has been validated as a biomarker for predicting treatment response to temozolomide in glioma patients. Given its essential role in cell division, therapeutic targeting of KIF20A presents opportunities for cancer treatment, though safety considerations regarding effects on normal cellular proliferation and a potential association with restrictive cardiomyopathy warrant careful investigation during drug development.

Other names

Rabkinesin-6Rab6-KIFRAB6KIFLKlpMPP1 (for KIF20B family member)

KIF20A antagonists would function as motor protein inhibitors, disrupting the kinesin's ability to transport cargo along microtubules and interfering with cell division processes. The protein functions as a mitotic kinesin requiring phosphorylation by PLK1 for recruitment to the central spindle.