We apologize for Proteopedia being slow to respond. For the past two years, a new implementation of Proteopedia has been being built. Soon, it will replace this 18-year old system. All existing content will be moved to the new system at a date that will be announced here.

4i16

From Proteopedia

Revision as of 08:33, 9 November 2022 by OCA (Talk | contribs)

(diff) ←Older revision | Current revision (diff) | Newer revision→ (diff)

Jump to: navigation, search

Crystal structure of CARMA1 CARD

Structural highlights

4i16 is a 1 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CAR11_MOUSE Involved in the costimulatory signal essential for T-cell receptor (TCR)-mediated T-cell activation. Its binding to DPP4 induces T-cell proliferation and NF-kappa-B activation in a T-cell receptor/CD3-dependent manner. Activates NF-kappa-B via BCL10 and IKK. Stimulates the phosphorylation of BCL10 (By similarity).

Publication Abstract from PubMed

The CBM complex (CARMA1, BCL10 and MALT1) plays a crucial role in B and T lymphocyte activation. CARMA1 serves as a scaffold for BCL10, MALT1 and other effector proteins and regulates various signaling pathways related to the immune response. The assembly of CARMA1 and BCL10 is mediated through a CARD-CARD interaction. Here, we report the crystal structure of the CARD domain of CARMA1 at a resolution of 1.75 A. The structure consists of six helices, as previously determined for CARD domains. Structural and computational analysis identified the binding interface between CARMA1-CARD and BCL10-CARD, which consists of a basic patch in CARMA1 and an acidic patch in BCL10. Site-directed mutagenesis, co-immunoprecipitation and an NF-kappaB activation assay confirmed that the interface is necessary for association and downstream signaling. Our studies provide molecular insight into the assembly of CARMA1 and BCL10.

Structural insights into the assembly of CARMA1 and BCL10.,Li S, Yang X, Shao J, Shen Y PLoS One. 2012;7(8):e42775. doi: 10.1371/journal.pone.0042775. Epub 2012 Aug 3. PMID:22880103^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Li S, Yang X, Shao J, Shen Y. Structural insights into the assembly of CARMA1 and BCL10. PLoS One. 2012;7(8):e42775. doi: 10.1371/journal.pone.0042775. Epub 2012 Aug 3. PMID:22880103 doi:http://dx.doi.org/10.1371/journal.pone.0042775