Cited by 81Cell death mechanisms and regulationNF-κB Signaling PathwaysCancer-related Molecular Pathways

Differential affinity of FLIP and procaspase 8 for FADD’s DED binding surfaces regulates DISC assembly

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Majkut, J., Sgobba, M., Holohan, C., Crawford, N., Logan, A. E., Kerr, E., Higgins, C. A., Redmond, K. L. +8 more·2014·Nature Communications

Abstract

Death receptor activation triggers recruitment of FADD, which via its death effector domain (DED) engages the DEDs of procaspase 8 and its inhibitor FLIP to form death-inducing signalling complexes (DISCs). The DEDs of FADD, FLIP and procaspase 8 interact with one another using two binding surfaces defined by α1/α4 and α2/α5 helices, respectively. Here we report that FLIP has preferential affinity for the α1/α4 surface of FADD, whereas procaspase 8 has preferential affinity for FADD's α2/α5 surface. These relative affinities contribute to FLIP being recruited to the DISC at comparable levels to procaspase 8 despite lower cellular expression. Additional studies, including assessment of DISC stoichiometry and functional assays, suggest that following death receptor recruitment, the FADD DED preferentially engages FLIP using its α1/α4 surface and procaspase 8 using its α2/α5 surface; these tripartite intermediates then interact via the α1/α4 surface of FLIP DED1 and the α2/α5 surface of procaspase 8 DED2.

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Authors
Majkut, J., Sgobba, M., Holohan, C., Crawford, N., Logan, A. E., Kerr, E., Higgins, C. A., Redmond, K. L., Riley, J. S., Stasik, I., Fennell, D. A., Van Schaeybroeck, S., Haider, S., Johnston, P. G., Haigh, D., & Longley, D. B.
Affiliations
Queen's University Belfast (GB)
Corresponding author
Longley, D. B.
Venue
Nature Communications
Published
2014-02-28
Volume
5
Issue
1
Pages
3350-3350
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2093916833
Cited by
81
References
41
Citations by year
2026: 2 · 2025: 4 · 2024: 14 · 2023: 2 · 2022: 7 · 2021: 7 · 2020: 10 · 2019: 4 · 2018: 7 · 2017: 6 · 2016: 8 · 2015: 9 · 2014: 1
FWCI
3.28
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • CLOK (University of Central Lancashire) (acceptedVersion)
  • Hope's Institutional Research Archive (Liverpool Hope University) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Hope's Institutional Research Archive (Liverpool Hope University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Research Portal (Queen's University Belfast) (submittedVersion)
Funders
  • Amgen
  • Wellcome Trust (099470)
  • Invest Northern Ireland
  • Cancer Research UK (13172, 13721)
  • Public Health Agency (RRG/3261/05)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
c-FLIP, procaspase-8, FADD, death effector domain, death-inducing signalling complex, death receptor signaling, protein-protein binding affinity, apoptosis
MeSH terms
Chromatography, Gel, Humans, Protein Binding, Blotting, Western, HCT116 Cells, Immunoprecipitation, Caspase 8, Fas-Associated Death Domain Protein, CASP8 and FADD-Like Apoptosis Regulating Protein

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