First Author | Schlauderer F | Year | 2018 |
Journal | Nat Commun | Volume | 9 |
Issue | 1 | Pages | 4041 |
PubMed ID | 30279415 | Mgi Jnum | J:267271 |
Mgi Id | MGI:6220517 | Doi | 10.1038/s41467-018-06573-8 |
Citation | Schlauderer F, et al. (2018) Molecular architecture and regulation of BCL10-MALT1 filaments. Nat Commun 9(1):4041 |
abstractText | 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 A 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-kappaB 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. |