FEATURES

FAMILY

DESCRIPTION

Also known as AIFM1_MOUSE, Aifm1, Aif, Pdcd8. Functions both as NADH oxidoreductase and as regulator of apoptosis (By similarity). In response to apoptotic stimuli, it is released from the mitochondrion intermembrane space into the cytosol and to the nucleus, where it functions as a proapoptotic factor in a caspase-independent pathway. The soluble form (AIFsol) found in the nucleus induces 'parthanatos' i.e. caspase-independent fragmentation of chromosomal DNA (PubMed:9989411). Binds to DNA in a sequence-independent manner. Interacts with EIF3G, and thereby inhibits the EIF3 machinery and protein synthesis, and activates caspase-7 to amplify apoptosis. Plays a critical role in caspase-independent, pyknotic cell death in hydrogen peroxide-exposed cells (By similarity). In contrast, participates in normal mitochondrial metabolism. Plays an important role in the regulation of respiratory chain biogenesis by interacting with CHCHD4 and controlling CHCHD4 mitochondrial import (PubMed:19447115)., Has NADH oxidoreductase activity. Does not induce nuclear apoptosis. Monomer (oxidized form). Homodimer (reduced form). Upon reduction with NADH, undergoes dimerization and forms tight, long-lived FADH2-NAD charge transfer complexes (CTC) resistant to oxidation (PubMed:19447115). Also dimerizes with isoform 3 preventing its release from mitochondria. Interacts with XIAP/BIRC4. Interacts (via N-terminus) with EIF3G (via C-terminus). Interacts with PRELID1. Interacts with CHCHD4; the interaction increases in presence of NADH (By similarity).

EXTERNAL LINKS

Aifm1

Apoptosis-inducing factor 1, mitochondrial

Aifm1

Molecular Synopsis