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Overview

Uniprot IDA0A5G2R2C9
Protein NameApoptosis-inducing factor 1, mitochondrial
Gene NameAIFM1
OrganismSus scrofa

Kla Sites from experimental identification

Position Flanking peptide
228 VAVLTGKKVVQLDVR

Function

Functions both as NADH oxidoreductase and as regulator of apoptosis. 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. Release into the cytoplasm is mediated upon binding to poly-ADP-ribose chains. The soluble form (AIFsol) found in the nucleus induces 'parthanatos' i.e. caspase-independent fragmentation of chromosomal DNA. 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. 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

Protein Sequence

10 MFRCGGLAAG 20 ALKQKLAPLV 30 RTVCVRGPRQ 40 RNRLPVVQCH 50 HLGSPSRSLA 60 STGASGKDGS 70 SLVYFLIVGA 80 TVTGAGVYYA 90 YRTIKDNKKR 100 YNERIAGLGL 110 TPEEKQKRAT 120 SSAPEGEPVP 130 QVRVPSHVPF 140 LLIGGGTAAF 150 AAARSIRARD 160 PGARVLIVSE 170 DPELPYMRPP 180 LSKELWFSDD 190 PNVTKTLRFR 200 QWNGKERSIY 210 FQPPSFYVSA 220 QDLPHIENGG 230 VAVLTGKKVV 240 QLDVRGNMAK 250 LNDGSQITYE 260 KCLIATGGTP 270 RSLSAIDRAG 280 AEVKSRTTLF 290 RKIGDFRTLE 300 KISREVKSIT 310 IIGGGFLGSE 320 LACALGRKAR 330 ALGTEVIQLF 340 PEKGNMGKIL 350 PEYLSNWTME 360 KVRREGVKVL 370 PNAIVQSVGV 380 SGGKLLIKLK 390 DGRKVETDHI 400 VAAVGLEPNV 410 ELAKTGGLEI 420 DSDFGGFRVN 430 AELQARSNIW 440 VAGDAACFYD 450 IKLGRRRVEH 460 HDHAVVSGRL 470 AGENMTGAAK 480 PYWHQSMFWS 490 DLGPDVGYEA 500 IGLVDSSLPT 510 VGVFAKATAQ 520 DNPKSATEQS 530 GTGIRSESET 540 ESEAPEITLP 550 VGSPAVPQAP 560 TQGEDYGKGV 570 IFYLRDKVVV 580 GIVLWNVFNR 590 MPIARKIIKD 600 GEQHEDLNEV AKLFNIHED

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005743 mitochondrial inner membrane
Cellular Component GO:0005758 mitochondrial intermembrane space
Cellular Component GO:0005634 nucleus
Cellular Component GO:0048471 perinuclear region of cytoplasm
Molecular Function GO:0003677 DNA binding
Molecular Function GO:0016491 oxidoreductase activity
Molecular Function GO:0046983 protein dimerization activity
Biological Process GO:0006915 apoptotic process
Biological Process GO:0043068 positive regulation of programmed cell death

Reference

[1] Fan S, Zhou R, Wen H, Ye H, Ma S et al.. Global profiling of protein lactylome in porcine granulosa cells.. J Ovarian Res 18(1):177. 2025 Aug 8. PMID: 40781717.