ASK1 (凋亡信号调节激酶 1)

Apoptosis signal-regulating kinase 1 (ASK1) is a member of the mitogen-activated protein kinase (MAP3K) family which acts as an upstream regulator for the activation of p38 MAPK and c-Jun N-terminal kinase (JNK). Under normal physiological conditions, ASK1 is maintained in an inactive state through binding to the reduced form of thioredoxin. However, during pathological conditions which induce intracellular production of reactive oxygen species (e.g., mitochondrial or endoplasmic reticulum stress), thioredoxin is oxidized and dissociates from ASK1 facilitating activation of ASK1 and downstream p38 MAPK and JNK signaling that can cause tissue injury .