PIDD1

The Death domain mediates the interaction with CRADD and the formation of a complex composed of 5 PIDD1 and 7 CRADD proteins which in turn recruit 7 CASP2 to form the PIDDosome.

The LRR repeat-containing domain has a regulatory activity, being autoinhibitory for the activation of NF-kappa-B.

Component of the DNA damage/stress response pathway that functions downstream of p53/TP53 and can either promote cell survival or apoptosis (PubMed:10973264, PubMed:15073321, PubMed:16360037, PubMed:17159900). Associated with CRADD and the CASP2 caspase, it forms the PIDDosome a complex that activates CASP2 and triggers apoptosis (PubMed:15073321, PubMed:17159900). Associated with IKBKG and RIPK1, it enhances sumoylation and ubiquitination of IKBKG which is important for activation of the transcription factor NF-kappa-B (PubMed:16360037, PubMed:17159900).

Intellectual developmental disorder, autosomal recessive 75, with neuropsychiatric features and variant lissencephaly

MRT75

An autosomal recessive disorder characterized by global developmental delay apparent from infancy or early childhood, impaired intellectual development, and behavioral and psychiatric abnormalities. Some patients present seizures and facial dysmorphism. Brain imaging often shows cortical anomalies.

None

The disease is caused by variants affecting the gene represented in this entry.

Undergoes autoproteolytic processing whose extent either directs cells towards survival or apoptotic pathways (PubMed:17159900). Autoproteolytically cleaved into two main fragments PIDD-N and PIDD-C (PubMed:17159900). PIDD-C can be further processed into PIDD-CC, a processing which is enhanced by DNA damage (PubMed:17159900). The cleavage producing PIDD-C is required for translocation of PIDD1 to the nucleus upon DNA damage and activation of NF-kappa-B (PubMed:17159900). PIDD-CC mediates the interaction with CRADD and the cleavage producing PIDD-CC is required for the activation of CASP2 (PubMed:17159900). PIDD-N remains associated with PIDD-C and PIDD-CC after cleavage (PubMed:17159900).

Ubiquitous.

• Cytoplasm
• Nucleus
• Enriched in the nucleus upon DNA damage.

LRDD, PIDD, PIDD1, p53-induced death domain-containing protein 1, Leucine-rich repeat and death domain-containing protein

• entrezGene:55367
• omim:605247
• swissprot:Q9HB75

Proteins

Immunology & Infectious Disease

99712Da