J Biol Chem. 2002 Mar 15;277(11):9505-11. Epub 2001 Dec 4.

Identification of a novel homotypic interaction motif required for the phosphorylation of receptor-interacting protein (RIP) by RIP3.External

Sun, X., Yin, J., Starovasnik, M. A., Fairbrother, W. J., Dixit, V. M.,
--- - Department of Molecular Oncology, Genentech, Inc., South San Francisco, California 94080, USA.
Receptor-interacting protein (RIP), a Ser/Thr kinase component of the tumor necrosis factor (TNF) receptor-1 signaling complex, mediates activation of the nuclear factor kappaB (NF-kappaB) pathway. RIP2 and RIP3 are related kinases that share extensive sequence homology with the kinase domain of RIP. Unlike RIP, which has a C-terminal death domain, and RIP2, which has a C-terminal caspase activation and recruitment domain, RIP3 possesses a unique C terminus. RIP3 binds RIP through this unique C-terminal segment to inhibit RIP- and TNF receptor-1-mediated NF-kappaB activation. We have identified a unique homotypic interaction motif at the C terminus of both RIP and RIP3 that is required for their association. Sixty-four amino acids within RIP3 and 88 residues within RIP are sufficient for interaction of the two proteins. This interaction is a prerequisite for RIP3-mediated phosphorylation of RIP and subsequent attenuation of TNF-induced NF-kappaB activation.
PMID: 11734559External
Arrow2 In vitro interaction Arrow2 In vivo interaction Arrow2 Characterization Arrow2 Functional role Arrow2 top
In vivo interaction
  Endogenous
expression
Overexpression DD1 DD2 Reference
Family DD1 DD2 Method Species Region Species Region
DD RIP Link TNFR1 Co-immunoprecipitation U937 11734559
(Link: click this icon to show interactions only between the two corresponding DDs)