ID P30429; PN Cell death protein 4; GN ced; OS 6239; SL Nucleus Position: SL-0198; SL Comments: Mitochondrion {ECO:0000269|PubMed:10688797, ECO:0000269|PubMed:9027313}. Cytoplasm, perinuclear region {ECO:0000269|PubMed:10688797, ECO:0000269|PubMed:9027313}. Note=In non cell death induced cells, ced-9 is required for mitochondrial localization. Perinuclear in cell death induced cells. {ECO:0000269|PubMed:10688797, ECO:0000269|PubMed:9027313}. DR UNIPROT: P30429; DR UNIPROT: Q5BHI5; DR PDB: 2A5Y; DR PDB: 3LQQ; DR PDB: 3LQR; DR PDB: 4M9S; DR PDB: 4M9X; DR PDB: 4M9Y; DR PDB: 4M9Z; DR Pfam: PF00619; DR Pfam: PF00931; DR PROSITE: PS50209; DE Function: Component of the egl-1, ced-9, ced-4 and ced-3 apoptotic signaling cascade required for the initiation of programmed cell death in cells fated to die during embryonic and postembryonic development (PubMed:3955651). During oogenesis, required for germline apoptosis downstream of ced-9 and upstream of ced-3 but independently of egl-1 (PubMed:9927601). May regulate germline apoptosis in response to DNA damage, probably downstream of let-60/ras and mpk-1 pathway (PubMed:21901106). Regulates CEP neuron apoptosis in response to high Al(3+) levels (PubMed:23106139). During male tail morphogenesis, promotes apoptosis of the tail-spike cell upstream of ced-3 but independently of egl-1 and ced-9 (PubMed:17329362). May play a role in sex-specific cell apoptosis, probably by promoting ced-3-mediated cleavage of sex-determining protein fem-1 (PubMed:10764728). During larval development, required for the elimination of transient presynaptic components downstream of egl-1 and ced-9 and upstream of ced-3 apoptotic pathway (PubMed:26074078). Downstream of calreticulin crt-1 and upstream of ced-3 and independently of egl-1 and ced-9, plays a role in the initial steps of axonal regrowth following axotomy (PubMed:22629231). Together with ain-1, a component of the miRNA- induced-silencing complex (miRISC), and probably upstream of ced-3, regulates temporal cell fate patterning during larval development (PubMed:25432023). May play a role in resistance to S.typhimurium- mediated infection (PubMed:11226309). {ECO:0000269|PubMed:10764728, ECO:0000269|PubMed:11226309, ECO:0000269|PubMed:17329362, ECO:0000269|PubMed:21901106, ECO:0000269|PubMed:22629231, ECO:0000269|PubMed:23106139, ECO:0000269|PubMed:25432023, ECO:0000269|PubMed:26074078, ECO:0000269|PubMed:3955651, ECO:0000269|PubMed:9927601}. [Isoform a]: Plays a major role in programmed cell death (PubMed:1286611, PubMed:8706125). egl-1 binds to and directly inhibits the activity of ced-9, releasing the cell death activator ced-4 from a ced-9/ced-4 containing protein complex and allowing ced-4 to induce caspase ced-3 autoproteolytic cleavage and activation (PubMed:15383288, PubMed:16208361, PubMed:20434985, PubMed:24065769). Also forms a holoenzyme with processed ced-3 enhancing ced-3 activity (PubMed:20434985). {ECO:0000269|PubMed:10688797, ECO:0000269|PubMed:1286611, ECO:0000269|PubMed:15383288, ECO:0000269|PubMed:16208361, ECO:0000269|PubMed:20434985, ECO:0000269|PubMed:24065769, ECO:0000269|PubMed:8706125}. [Isoform b]: Prevents programmed cell death. {ECO:0000269|PubMed:8706125}. DE Reference Proteome: Yes; DE Interaction: P41958; IntAct: EBI-494126; Score: 0.84 DE Interaction: Q07817; IntAct: EBI-494146; Score: 0.40 DE Interaction: P42573; IntAct: EBI-494268; Score: 0.86 DE Interaction: O61667; IntAct: EBI-11688070; Score: 0.35 DE Interaction: P30429; IntAct: EBI-2655126; Score: 0.44 DE Interaction: Q20924; IntAct: EBI-15599089; Score: 0.56 DE Interaction: Q14790; IntAct: EBI-16211709; Score: 0.40 DE Interaction: Q9NAG4; IntAct: EBI-16587288; Score: 0.57 GO GO:0008303; GO GO:0005829; GO GO:0016020; GO GO:0005739; GO GO:0005634; GO GO:0048471; GO GO:0032991; GO GO:0043531; GO GO:0005524; GO GO:0051432; GO GO:0051434; GO GO:0089720; GO GO:0008656; GO GO:0061133; GO GO:0042802; GO GO:0000287; GO GO:0016505; GO GO:0030042; GO GO:0097202; GO GO:0006919; GO GO:0006915; GO GO:1902742; GO GO:0050829; GO GO:0009792; GO GO:0048598; GO GO:0046716; GO GO:0043066; GO GO:1900118; GO GO:0043065; GO GO:1904747; GO GO:2001056; GO GO:0010954; GO GO:1905808; GO GO:0030155; GO GO:0008361; GO GO:0043281; GO GO:0040034; GO GO:0031647; TP Membrane Topology: Unknown; Source: UniProt - Sequence Analysis; SQ MLCEIECRALSTAHTRLIHDFEPRDALTYLEGKNIFTEDHSELISKMSTRLERIANFLRIYRRQASELGPLIDFFNYNNQ SQ SHLADFLEDYIDFAINEPDLLRPVVIAPQFSRQMLDRKLLLGNVPKQMTCYIREYHVDRVIKKLDEMCDLDSFFLFLHGR SQ AGSGKSVIASQALSKSDQLIGINYDSIVWLKDSGTAPKSTFDLFTDILLMLARVVSDTDDSHSITDFINRVLSRSEDDLL SQ NFPSVEHVTSVVLKRMICNALIDRPNTLFVFDDVVQEETIRWAQELRLRCLVTTRDVEISNAASQTCEFIEVTSLEIDEC SQ YDFLEAYGMPMPVGEKEEDVLNKTIELSSGNPATLMMFFKSCEPKTFEKMAQLNNKLESRGLVGVECITPYSYKSLAMAL SQ QRCVEVLSDEDRSALAFAVVMPPGVDIPVKLWSCVIPVDICSNEEEQLDDEVADRLKRLSKRGALLSGKRMPVLTFKIDH SQ IIHMFLKHVVDAQTIANGISILEQRLLEIGNNNVSVPERHIPSHFQKFRRSSASEMYPKTTEETVIRPEDFPKFMQLHQK SQ FYDSLKNFACC //