酸化還元酵素; その他が電子受容体 / protein import into the intermembrane space via the disulfide relay system / cellular response to aldosterone / mitochondrial respiratory chain complex assembly / protein import into mitochondrial intermembrane space / poly-ADP-D-ribose binding / NAD(P)H oxidase H2O2-forming activity / positive regulation of necroptotic process / Mitochondrial protein import / response to L-glutamate ...酸化還元酵素; その他が電子受容体 / protein import into the intermembrane space via the disulfide relay system / cellular response to aldosterone / mitochondrial respiratory chain complex assembly / protein import into mitochondrial intermembrane space / poly-ADP-D-ribose binding / NAD(P)H oxidase H2O2-forming activity / positive regulation of necroptotic process / Mitochondrial protein import / response to L-glutamate / protein-disulfide reductase activity / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / oxidoreductase activity, acting on NAD(P)H / NADH dehydrogenase activity / sperm head-tail coupling apparatus / cellular response to nitric oxide / FAD binding / response to ischemia / cellular response to estradiol stimulus / protein maturation / mitochondrial intermembrane space / response to toxic substance / cellular response to hydrogen peroxide / neuron differentiation / positive regulation of neuron apoptotic process / cellular response to hypoxia / protein dimerization activity / mitochondrial inner membrane / positive regulation of apoptotic process / apoptotic process / perinuclear region of cytoplasm / mitochondrion / DNA binding / nucleus / cytosol 類似検索 - 分子機能
ジャーナル: Mol Cell / 年: 2025 タイトル: Interaction with AK2A links AIFM1 to cellular energy metabolism. 著者: Robin Alexander Rothemann / Egor Pavlenko / Mrityunjoy Mondal / Sarah Gerlich / Pavel Grobushkin / Sebastian Mostert / Julia Racho / Konstantin Weiss / Dylan Stobbe / Katharina Stillger / Kim ...著者: Robin Alexander Rothemann / Egor Pavlenko / Mrityunjoy Mondal / Sarah Gerlich / Pavel Grobushkin / Sebastian Mostert / Julia Racho / Konstantin Weiss / Dylan Stobbe / Katharina Stillger / Kim Lapacz / Silja Lucia Salscheider / Carmelina Petrungaro / Dan Ehninger / Thi Hoang Duong Nguyen / Jörn Dengjel / Ines Neundorf / Daniele Bano / Simon Poepsel / Jan Riemer / 要旨: Apoptosis-inducing factor 1 (AIFM1) is a flavoprotein essential for mitochondrial function and biogenesis. Its interaction with MIA40/CHCHD4, the central component of the mitochondrial disulfide ...Apoptosis-inducing factor 1 (AIFM1) is a flavoprotein essential for mitochondrial function and biogenesis. Its interaction with MIA40/CHCHD4, the central component of the mitochondrial disulfide relay, accounts for some, but not all, aspects of AIFM1 function. We provide a high-confidence AIFM1 interactome that elucidates functional partners within the mitochondrial intermembrane space. We found that AIFM1 binding to adenylate kinase 2 (AK2), an essential enzyme that maintains cellular adenine nucleotide pools, depends on the AK2 C-terminal domain. High-resolution cryoelectron microscopy (cryo-EM) and biochemical analyses showed that both MIA40 and AK2A bind the AIFM1 C-terminal β-sheet domain. Their binding enhances NADH oxidoreductase activity by locking an active dimer conformation and, in the case of MIA40, affecting the cofactor-binding site. The AIFM1-AK2A interaction is important during mitochondrial respiration because AIFM1 serves as a recruiting hub within the IMS, regulating mitochondrial bioenergetic output by creating hotspots of metabolic enzymes.