Crystal Structure of zebrafish ASC CARD DomainCrystal Structure of zebrafish ASC CARD Domain

Structural highlights

5gpq is a 1 chain structure with sequence from Danio rerio and Escherichia coli O157:H7. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.1Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

ASC_DANRE Functions as key mediator in apoptosis and inflammation (PubMed:12464617, PubMed:30150286). Promotes caspase-mediated apoptosis (PubMed:12464617). Induces proteolytic processing of caspa and caspa-dependent apoptosis (PubMed:12464617). Involved in innate immune response by acting as an integral adapter in the assembly of various inflammasomes which recruit and activate caspase-1 leading to processing and secretion of pro-inflammatory cytokines (PubMed:30150286). Caspase-1-dependent inflammation leads to macrophage pyroptosis, a form of cell death (By similarity). The function as activating adapter in different types of inflammasomes is mediated by the pyrin and CARD domains and their homotypic interactions (PubMed:30150286). Clustered PYCARD nucleates the formation of caspase-1 filaments through the interaction of their respective CARD domains, acting as a platform for of caspase-1 polymerization (By similarity). Also involved in transcriptional activation of cytokines and chemokines independent of the inflammasome (By similarity).[UniProtKB:Q9ULZ3][1] [2] MALE_ECOLI Involved in the high-affinity maltose membrane transport system MalEFGK. Initial receptor for the active transport of and chemotaxis toward maltooligosaccharides.

References

  1. Masumoto J, Zhou W, Chen FF, Su F, Kuwada JY, Hidaka E, Katsuyama T, Sagara J, Taniguchi S, Ngo-Hazelett P, Postlethwait JH, Núñez G, Inohara N. Caspy, a zebrafish caspase, activated by ASC oligomerization is required for pharyngeal arch development. J Biol Chem. 2003 Feb 7;278(6):4268-76. PMID:12464617 doi:10.1074/jbc.M203944200
  2. Li JY, Gao K, Shao T, Fan DD, Hu CB, Sun CC, Dong WR, Lin AF, Xiang LX, Shao JZ. Characterization of an NLRP1 Inflammasome from Zebrafish Reveals a Unique Sequential Activation Mechanism Underlying Inflammatory Caspases in Ancient Vertebrates. J Immunol. 2018 Oct 1;201(7):1946-1966. PMID:30150286 doi:10.4049/jimmunol.1800498

5gpq, resolution 2.10Å

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