Kinesin
From Proteopedia
Contents |
Function
Kinesins are eukaryotic motor proteins which move along microtubules[1]. Kinesin (KIF) is a dimer consisting of 2 heavy chains and two light chains. The heavy chain contains the N-terminal globular motor domain (MD) responsible for the motor activity of kinesin, a central flexible neck linker (FNL) coiled-coil stalk which intertwines to form the dimer and a small globular C-terminal domain which interacts with other proteins like the kinesin light chain. The light chain (KLC) forms the tail region. The KLC contains a cargo binding domain which is called TPR (Tetratricopeptide repeat). The KIFs are named by their gene number. KIF contains a forkhead-associated domain (FHA) which is involved in phosphopeptide recognition.
- Kar3 is kinesin protein in yeast.
- Eg5 or KIF11 is a kinesin (See Kinesin-5) which participates in mitosis.
- NOD is a Drosophila chromosome-associated kinesin.
See also CAP-Gly domain.
Disease
Mutations in KIF5A are involved in hereditary spastic paraplegia[2]. Mutation in KIF1B is the cause of Charcot-Marie-Tooth disease [3].
3D Structures of Kinesin
Updated on 07-April-2016
References
- ↑ Hirokawa N, Noda Y, Tanaka Y, Niwa S. Kinesin superfamily motor proteins and intracellular transport. Nat Rev Mol Cell Biol. 2009 Oct;10(10):682-96. doi: 10.1038/nrm2774. PMID:19773780 doi:http://dx.doi.org/10.1038/nrm2774
- ↑ Ebbing B, Mann K, Starosta A, Jaud J, Schols L, Schule R, Woehlke G. Effect of spastic paraplegia mutations in KIF5A kinesin on transport activity. Hum Mol Genet. 2008 May 1;17(9):1245-52. doi: 10.1093/hmg/ddn014. Epub 2008 Jan, 18. PMID:18203753 doi:http://dx.doi.org/10.1093/hmg/ddn014
- ↑ Hirokawa N, Takemura R. Biochemical and molecular characterization of diseases linked to motor proteins. Trends Biochem Sci. 2003 Oct;28(10):558-65. PMID:14559185 doi:http://dx.doi.org/10.1016/j.tibs.2003.08.006
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