Kinesin

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== Function ==
== Function ==
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[[Kinesin|Kinesins]] are eukaryotic motor proteins which move along microtubules<ref>PMID:19773780</ref>. Kinesin (KIF) is a dimer consisting of 2 heavy chains and two light chains. The heavy chain contains the globular motor domain (MD), flexible neck linker (FNL) and a long coiled-coil stalk which intertwines to form the dimer. 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.<br />
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[[Kinesin|Kinesins]] are eukaryotic motor proteins which move along microtubules<ref>PMID:19773780</ref>. 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.<br />
*'''Kar3''' is kinesin protein in yeast.<br />
*'''Kar3''' is kinesin protein in yeast.<br />
*'''Eg5''' or '''KIF11''' is a kinesin (See [[Kinesin-5]]) which participates in mitosis.<br />
*'''Eg5''' or '''KIF11''' is a kinesin (See [[Kinesin-5]]) which participates in mitosis.<br />

Revision as of 06:48, 7 April 2016

Template:STRUCTURE 2zfi

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

  1. ↑ 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
  2. ↑ 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
  3. ↑ 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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