Download MendeleyMolecular architecture and regulation of BCL10-MALT1 filaments.
Schlauderer, F., Seeholzer, T., Desfosses, A., Gehring, T., Strauss, M., Hopfner, K.P., Gutsche, I., Krappmann, D., Lammens, K.(2018) Nat Commun 9: 4041-4041
- PubMed: 30279415
- DOI: https://doi.org/10.1038/s41467-018-06573-8
- Primary Citation of Related Structures:
6GK2 - PubMed Abstract:
The CARD11-BCL10-MALT1 (CBM) complex triggers the adaptive immune response in lymphocytes and lymphoma cells. CARD11/CARMA1 acts as a molecular seed inducing BCL10 filaments, but the integration of MALT1 and the assembly of a functional CBM complex has remained elusive. Using cryo-EM we solved the helical structure of the BCL10-MALT1 filament. The structural model of the filament core solved at 4.9 Å resolution identified the interface between the N-terminal MALT1 DD and the BCL10 caspase recruitment domain. The C-terminal MALT1 Ig and paracaspase domains protrude from this core to orchestrate binding of mediators and substrates at the filament periphery. Mutagenesis studies support the importance of the identified BCL10-MALT1 interface for CBM complex assembly, MALT1 protease activation and NF-κB signaling in Jurkat and primary CD4 T-cells. Collectively, we present a model for the assembly and architecture of the CBM signaling complex and how it functions as a signaling hub in T-lymphocytes.
Organizational Affiliation:
Gene Center, Ludwig-Maximilians University, Feodor-Lynen-Str. 25, 81377, München, Germany.
