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.
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.