8h33

Structural highlights

Function

KBTB2_HUMAN Substrate-specific adapter of a BCR (BTB-CUL3-RBX1) E3 ubiquitin ligase complex that acts as a regulator of the insulin signaling pathway, modulating insulin sensitivity by limiting PIK3R1/p85alpha abundance in adipocytes. Targets PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase (PI3K), for 'Lys-48'-linked polyubiquitination and proteasome-mediated degradation.^[1]

See Also

• Ring box protein 3D structures
• Ubiquitin protein ligase 3D structures

References

1. ↑ Zhang Z, Turer E, Li X, Zhan X, Choi M, Tang M, Press A, Smith SR, Divoux A, Moresco EM, Beutler B. Insulin resistance and diabetes caused by genetic or diet-induced KBTBD2 deficiency in mice. Proc Natl Acad Sci U S A. 2016 Oct 18;113(42):E6418-E6426. PMID:27708159 doi:10.1073/pnas.1614467113