Kinesin-like protein KIF23 is a protein that in humans is encoded by the KIF23gene.[5][6]
Function
In cell division
KIF23 (also known as Kinesin-6, CHO1/MKLP1, C. elegans ZEN-4 and Drosophila Pavarotti) is a member of kinesin-like protein family. This family includes microtubule-dependent molecular motors that transport organelles within cells and move chromosomes during cell division. This protein has been shown to cross-bridge antiparallel microtubules and drive microtubule movement in vitro. Alternate splicing of this gene results in two transcript variants encoding two different isoforms, better known as CHO1, the larger isoform and MKLP1, the smaller isoform.[6] KIF23 is a plus-end directed motor protein expressed in mitosis, involved in the formation of the cleavage furrow in late anaphase and in cytokinesis.[5][7][8] KIF23 is part of the centralspindlin complex that includes PRC1, Aurora B and 14-3-3 which cluster together at the spindle midzone to enable anaphase in dividing cells.[9][10][11]
In neurons
In neuronal development KIF23 is involved in the transport of minus-end distal microtubules into dendrites and is expressed exclusively in cell bodies and dendrites.[12][13][14][15][16] Knockdown of KIF23 by antisense oligonucleotides and by siRNA both cause a significant increase in axon length and a decrease in dendritic phenotype in neuroblastoma cells and in rat neurons.[14][15][17] In differentiating neurons, KIF23 restricts the movement of short microtubules into axons by acting as a "brake" against the driving forces of cytoplasmic dynein. As neurons mature, KIF23 drives minus-end distal microtubules into nascent dendrites contributing to the multi-polar orientation of dendritic microtubules and the formation of their short, fat, tapering morphology.[17]
^"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.
^ abNislow C, Lombillo VA, Kuriyama R, McIntosh JR (Nov 1992). "A plus-end-directed motor enzyme that moves antiparallel microtubules in vitro localizes to the interzone of mitotic spindles". Nature. 359 (6395): 543–7. Bibcode:1992Natur.359..543N. doi:10.1038/359543a0. PMID1406973. S2CID4361579.
^Sharp DJ, Kuriyama R, Essner R, Baas PW (October 1997). "Expression of a minus-end-directed motor protein induces Sf9 cells to form axon-like processes with uniform microtubule polarity orientation". J. Cell Sci. 110 (19): 2373–80. doi:10.1242/jcs.110.19.2373. PMID9410876.
^Xu X, He C, Zhang Z, Chen Y (February 2006). "MKLP1 requires specific domains for its dendritic targeting". J. Cell Sci. 119 (Pt 3): 452–8. doi:10.1242/jcs.02750. PMID16418225. S2CID29919060.
^Takahashi S, Fusaki N, Ohta S, Iwahori Y, Iizuka Y, Inagawa K, Kawakami Y, Yoshida K, Toda M (February 2012). "Downregulation of KIF23 suppresses glioma proliferation". J. Neurooncol. 106 (3): 519–29. doi:10.1007/s11060-011-0706-2. PMID21904957. S2CID33089132.
Deavours BE, Walker RA (July 1999). "Nuclear localization of C-terminal domains of the kinesin-like protein MKLP-1". Biochem. Biophys. Res. Commun. 260 (3): 605–8. doi:10.1006/bbrc.1999.0952. PMID10403813.
Rush J, Moritz A, Lee KA, Guo A, Goss VL, Spek EJ, Zhang H, Zha XM, Polakiewicz RD, Comb MJ (January 2005). "Immunoaffinity profiling of tyrosine phosphorylation in cancer cells". Nat. Biotechnol. 23 (1): 94–101. doi:10.1038/nbt1046. PMID15592455. S2CID7200157.