Kinesin-like protein KIF3A is a protein that in humans is encoded by the KIF3Agene.[5][6]
Function
KIF3A is one subunit of the heterotrimeric motor protein, kinesin-2, that was initially isolated from sea urchin egg/embryo cytosol using microtubule affinity purification.[7] This motor consists of two kinesin-related subunits (called KIF3A and KIF3B or 3C in vertebrates) and an associated protein (KAP3), and it transports protein complexes, nucleic acids and organelles towards the "plus" ends of microtubule tracks within cells. Work done in a broad range of eukaryotic cells has revealed that heterotrimeric kinesin-2 is the primary motor protein driving the intraflagellar transport of tubulins and other axonemal building blocks from the base of the ciliary/flagellar axoneme to their site of assembly at the distal tips.[8] This process is required for cilium assembly/maintenance and cilium-based signalling which play key roles in various cell and developmental processes. For example, in vertebrate embryos, kinesin-2 function is required for cilia-dependent nodal flow and the development of left-right asymmetry.[9]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Whitehead JL, Wang SY, Bost-Usinger L, Hoang E, Frazer KA, Burnside B (November 1999). "Photoreceptor localization of the KIF3A and KIF3B subunits of the heterotrimeric microtubule motor kinesin II in vertebrate retina". Exp. Eye Res. 69 (5): 491–503. doi:10.1006/exer.1999.0724. PMID10548469.
Hasegawa T, Yagi A, Isobe K (2000). "Interaction between GADD34 and kinesin superfamily, KIF3A". Biochem. Biophys. Res. Commun. 267 (2): 593–6. doi:10.1006/bbrc.1999.1991. PMID10631107.
Jimbo T, Kawasaki Y, Koyama R, et al. (2002). "Identification of a link between the tumour suppressor APC and the kinesin superfamily". Nat. Cell Biol. 4 (4): 323–7. doi:10.1038/ncb779. PMID11912492. S2CID10745049.
Surpili MJ, Delben TM, Kobarg J (2004). "Identification of proteins that interact with the central coiled-coil region of the human protein kinase NEK1". Biochemistry. 42 (51): 15369–76. doi:10.1021/bi034575v. PMID14690447.
Pantelidou M, Zographos SE, Lederer CW, et al. (2007). "Differential expression of molecular motors in the motor cortex of sporadic ALS". Neurobiol. Dis. 26 (3): 577–89. doi:10.1016/j.nbd.2007.02.005. PMID17418584. S2CID2838469.