7LXC

Structure and Interactions of DED1 of human cFLIP

Summary for 7LXC

• Entry DOI: 10.2210/pdb7lxc/pdb
• NMR Information: BMRB: 30874
• Descriptor: DED1ch (1 entity in total)
• Functional Keywords: ded1, cflip, chimera, protein binding, death effector domain, apoptosis
• Biological source: Homo sapiens (Human)
• Total number of polymer chains: 1
• Total formula weight: 12425.53

Authors

Panaitiu, A.E.,Basiashvili, T.,Mierke, D.F.,Pellegrini, M. (deposition date: 2021-03-03, release date: 2021-12-01, Last modification date: 2024-05-15)

Primary citation

Panaitiu, A.E.,Basiashvili, T.,Mierke, D.F.,Pellegrini, M.
An engineered construct of cFLIP provides insight into DED1 structure and interactions.
Structure, 30:229-239.e5, 2022

PubMed Abstract: Cellular FLICE-like inhibitory protein (cFLIP) is a member of the Death Domain superfamily with pivotal roles in many cellular processes and disease states, including cancer and autoimmune disorders. In the context of the death-inducing signaling complex (DISC), cFLIP isoforms regulate extrinsic apoptosis by controlling procaspase-8 activation. The function of cFLIP is mediated through a series of protein-protein interactions, engaging the two N-terminal death effector domains (DEDs). Here, we solve the structure of an engineered DED1 domain of cFLIP using solution nuclear magnetic resonance (NMR) and we define the interaction with FADD and calmodulin, protein-protein interactions that regulate the function of cFLIP in the DISC. cFLIP DED1 assumes a canonical DED fold characterized by six α helices and is able to bind calmodulin and FADD through two separate interfaces. Our results clearly demonstrate the role of DED1 in the cFLIP/FADD association and contribute to the understanding of the assembly of DISC filaments.

PubMed: 34800372
DOI: 10.1016/j.str.2021.10.011

Experimental method

SOLUTION NMR