Gigaxonin

Definition:

Probable cytoskeletal component that directly or indirectly plays an important role in neurofilament architecture. May act as a substrate-specific adapter of an E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Controls degradation of TBCB. Controls degradation of MAP1B and MAP1S, and is critical for neuronal maintenance and survival.

References:

[1]. Jianqing Ding, et al. Microtubule-associated protein 1B: a neuronal binding partner for gigaxonin. J Cell Biol. 2002 Aug 5;158(3):427-33. [Content Brief]

[2]. Elizabeth Allen, et al. Gigaxonin-controlled degradation of MAP1B light chain is critical to neuronal survival. Nature. 2005 Nov 10;438(7065):224-8. [Content Brief]

[3]. Wei Wang, et al. Gigaxonin interacts with tubulin folding cofactor B and controls its degradation through the ubiquitin-proteasome pathway. Curr Biol. 2005 Nov 22;15(22):2050-5. [Content Brief]

[4]. Donna D Zhang, et al. Ubiquitination of Keap1, a BTB-Kelch substrate adaptor protein for Cul3, targets Keap1 for degradation by a proteasome-independent pathway. J Biol Chem. 2005 Aug 26;280(34):30091-9. [Content Brief]

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