Regulation by c-FLIP
All c-FLIP proteins carry two DEDs at their N termini, which can bind FADD and procaspase-8. In addition to two DEDs, FLIP(L) contains a large (p20) and a small (p12) caspase-like domain without catalytic activity. FLIP(S) and FLIP(R) consist of two DEDs and a small C terminus. Depending on its level of expression FLIP(L) may function as an anti-apoptotic or pro-apoptotic factor, while FLIP(S) and FLIP(R) protect cells from apoptosis by blocking the processing of caspase-8 at the receptor level (Scaffidi C et al. 1999; Golks A et al. 2005; Toivonen HT et al. 2011; Fricker N et al. 2010).
| UniProt ID | Protein Name | Gene Symbol | Pathway Viewer |
|---|---|---|---|
| O00220 | Tumor necrosis factor receptor superfamily member 10A |
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| O14763 | Tumor necrosis factor receptor superfamily member 10B |
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| P25445 | Tumor necrosis factor receptor superfamily member 6 |
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| P48023 | Tumor necrosis factor ligand superfamily member 6 |
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| Q13158 | FAS-associated death domain protein |
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| Q13546 | Receptor-interacting serine/threonine-protein kinase 1 |
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| Q15628 | Tumor necrosis factor receptor type 1-associated DEATH domain protein |
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Last updated: April 6, 2026