Regulation by c-FLIP

Stable Identifier
R-HSA-3371378
Type
Pathway
Species
Homo sapiens
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Regulation by c-FLIP
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c-FLIP proteins (CASP8 and FADD-like apoptosis regulators or c-FLICE inhibitory proteins) are death effector domain (DED)-containing proteins that are recruited to the death-inducing signaling complex (DISC) to regulate activation of caspases-8. Three out of 13 distinct spliced variants of c-FLIP had been found to be expressed at the protein level, the 26 kDa short form FLIP(S), the 24 kDa form FLIP(R), and the 55 kDa long form FLIP(L) (Irmler M et al. 1997; Shu HB et al. 1997; Srinivasula SM et al. 1997; Scaffidi C et al. 1999; Golks A et al. 2005; Haag C et al. 2011)

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).

Literature References
PubMed ID Title Journal Year
21235526 FLIP(L) induces caspase 8 activity in the absence of interdomain caspase 8 cleavage and alters substrate specificity

Pop, C, Oberst, A, Drag, M, Van Raam, BJ, Riedl, SJ, Green, DR, Salvesen, GS

Biochem J 2011
19416807 Mechanism of procaspase-8 activation by c-FLIPL

Yu, JW, Jeffrey, PD, Shi, Y

Proc. Natl. Acad. Sci. U.S.A. 2009
9217161 Inhibition of death receptor signals by cellular FLIP

Irmler, M, Thome, M, Hahne, M, Schneider, P, Hofmann, K, Steiner, V, Bodmer, JL, Schröter, M, Burns, K, Mattmann, C, Rimoldi, D, French, LE, Tschopp, J

Nature 1997
Participants
Events
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Event Information
Go Biological Process
regulation of extrinsic apoptotic signaling pathway via death domain receptors (1902041)
Orthologous Events
Regulation by c-FLIP (Bos taurus)
Regulation by c-FLIP (Canis familiaris)
Regulation by c-FLIP (Danio rerio)
Regulation by c-FLIP (Gallus gallus)
Regulation by c-FLIP (Mus musculus)
Regulation by c-FLIP (Rattus norvegicus)
Regulation by c-FLIP (Sus scrofa)
Regulation by c-FLIP (Xenopus tropicalis)
Cross References
BioModels Database
Authored
Shamovsky, V  (2013-05-13)
Reviewed
Pop, C  (2013-05-22)
Salvesen, GS  (2013-05-22)
Created
Shamovsky, V  (2013-05-13)