RRC ID 28684
Author Wang Y, Hasegawa M, Imamura R, Kinoshita T, Kondo C, Konaka K, Suda T.
Title PYNOD, a novel Apaf-1/CED4-like protein is an inhibitor of ASC and caspase-1.
Journal Int Immunol
Abstract Recently, a large subfamily of nucleotide-binding and oligomerization domain-containing proteins that have an N-terminal pyrin-like domain and C-terminal leucine-rich repeats has been described. In this study, we identified PYNOD, a novel member of this family that lacks the leucine-rich repeats. We found that human PYNOD mRNA is expressed in various tissues and at high levels in heart, skeletal muscle and brain. It is also expressed in various cell lines, including haematopoietic cell lines. PYNOD oligomerizes and binds to ASC, an adaptor protein that plays a role in apoptotic and inflammatory signal transduction, and to caspase-1 and IL-1beta. PYNOD inhibits apoptosis-associated speck-like protein containing a CARD (ASC)-mediated NF-kappaB activation and apoptosis, and caspase-1-mediated IL-1beta maturation, and it does so in the presence and absence of constitutively active mutants of CARD12 and PYPAF1, which are enhancers of these processes. Thus, PYNOD is a novel regulator of apoptosis and inflammation.
Volume 16(6)
Pages 777-86
Published 2004-6-1
DOI 10.1093/intimm/dxh081
PII dxh081
PMID 15096476
MeSH Adaptor Proteins, Signal Transducing Amino Acid Sequence Animals Apoptosis* Apoptosis Regulatory Proteins Apoptotic Protease-Activating Factor 1 CARD Signaling Adaptor Proteins Carrier Proteins / chemistry Carrier Proteins / genetics Carrier Proteins / physiology* Caspase Inhibitors* Cell Line Cysteine Proteinase Inhibitors / chemistry Cysteine Proteinase Inhibitors / genetics Cysteine Proteinase Inhibitors / metabolism Cytoskeletal Proteins / antagonists & inhibitors* Gene Expression / genetics Humans Interleukin-1 / metabolism Mice Molecular Sequence Data NF-kappa B / metabolism Protein Binding Proteins / genetics Proteins / metabolism RNA, Messenger / analysis Rats Sequence Homology, Amino Acid
IF 3.519
Times Cited 84
DNA material pMOS-PYPAF1 (RDB07951) pEF-PYPAF1 (RDB07952)