DAPK1, Death-associated protein kinase 1
Enzyme Classification 22.214.171.124
Also Known as
DAPK1_HUMAN, DAPK1, DAPK
Calcium/calmodulin-dependent serine/threonine kinase involved in multiple cellular signaling pathways that trigger cell survival, apoptosis, and autophagy. Regulates both type I apoptotic and type II autophagic cell deaths signal, depending on the cellular setting. The former is caspase-dependent, while the latter is caspase-independent and is characterized by the accumulation of autophagic vesicles. Phosphorylates PIN1 resulting in inhibition of its catalytic activity, nuclear localization, and cellular function. Phosphorylates TPM1, enhancing stress fiber formation in endothelial cells. Phosphorylates STX1A and significantly decreases its binding to STXBP1. Phosphorylates PRKD1 and regulates JNK signaling by binding and activating PRKD1 under oxidative stress. Phosphorylates BECN1, reducing its interaction with BCL2 and BCL2L1 and promoting the induction of autophagy. Phosphorylates TSC2, disrupting the TSC1-TSC2 complex and stimulating mTORC1 activity in a growth factor-dependent pathway. Phosphorylates RPS6, MYL9 and DAPK3. Acts as a signaling amplifier of NMDA receptors at extrasynaptic sites for mediating brain damage in stroke. Cerebral ischemia recruits DAPK1 into the NMDA receptor complex and it phosphorylates GRINB at Ser-1303 inducing injurious Ca(2+) influx through NMDA receptor channels, resulting in an irreversible neuronal death. Required together with DAPK3 for phosphorylation of RPL13A upon interferon-gamma activation which is causing RPL13A involvement in transcript-selective translation inhibition., Isoform 2 cannot induce apoptosis but can induce membrane blebbing. Interacts with KLHL20 (PubMed:20389280). Interacts (via death domain) with MAPK1 and MAPK3 (PubMed:15616583). Interacts with MAP1B (via N-terminus) (PubMed:18195017). Interacts with PRKD1 in an oxidative stress-regulated manner (PubMed:17703233). Interacts with PIN1, PDCD6, BECN1, TSC2 and STX1A (PubMed:12730201, PubMed:16132846, PubMed:18974095, PubMed:19180116, PubMed:21497122). Interacts (via kinase domain) with DAPK3 (via kinase domain) (PubMed:15367680). Interacts with GRINB (By similarity). Interacts (via death domain) with UNC5B (via death domain) (PubMed:15729359). Interacts with UNC5C (via death domain) (PubMed:27068745).