Nod1, an Apaf-1-like Activator of Caspase-9 and Nuclear Factor-κB

来自 Semantic Scholar

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作者：

N Inohara，T Koseki，del Peso, L.，Y Hu，C Yee，S Chen，R Carrio，J Merino，D Liu，J Ni

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摘要：

Ced-4 and Apaf-1 belong to a major class of apoptosis regulators that contain caspase-recruitment (CARD) and nucleotide-binding oligomerization domains. Nod1, a protein with an NH2-terminal CARD-linked to a nucleotide-binding domain and a COOH-terminal segment with multiple leucine-rich repeats, was identified. Nod-1 was found to bind to multiple caspases with long prodomains, but specifically activated caspase-9 and promoted caspase-9-induced apoptosis. As reported for Apaf-1, Nod1 required both the CARD and P-loop for function. Unlike Apaf-1, Nod1 induced activation of nuclear factor-kappa-B (NF-kappaB) and bound RICK, a CARD-containing kinase that also induces NF-kappaB activation. Nod1 mutants inhibited NF-kappaB activity induced by RICK, but not that resulting from tumor necrosis factor-alpha stimulation. Thus, Nod1 is a leucine-rich repeat-containing Apaf-1-like molecule that can regulate both apoptosis and NF-kappaB activation pathways.

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关键词：

Humans Adaptor Proteins, Signal Transducing Caspases Proteins NF-kappa B Chromosome Mapping Mutation Apoptosis Amino Acid Sequence Caspase 9