Cell death protein 3 - P42573 (CED3_CAEEL)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P42573: 1
 
Function
Acts as a cysteine protease in controlling programmed cell death (apoptosis) by proteolytically activating or inactivating a wide range of substrates (PubMed:8654923, PubMed:3955651, PubMed:18722182, PubMed:26074078, PubMed:27723735). 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, PubMed:17329362, PubMed:25432023, PubMed:27723735). During oogenesis, required for germline apoptosis downstream of ced-9 and ced-4 but independently of egl-1 (PubMed:9927601). By cleaving and activating ced-8, promotes phosphatidylserine exposure on the surface of apoptotic cells; phosphatidylserine is a specific marker only present at the surface of apoptotic cells and acts as a specific signal for engulfment (PubMed:24225442). By cleaving and converting dcr-1 into a deoxyribonuclease (DNase), promotes apoptotic chromosomal DNA fragmentation (PubMed:20223951). By cleaving mitochondrial fission protein drp-1, may regulate the removal of mitochondria during apoptosis (PubMed:18722182). During germline apoptosis, cleaves translation initiation factor ifg-1 (isoform p170) promoting cap-independent translation (PubMed:21909434). During male tail morphogenesis, promotes apoptosis of the tail-spike cell downstream of ced-4 but independently of egl-1 and ced-9 (PubMed:17329362). By cleaving cnt-1, prevents the activation of the prosurvival akt-1/2 signaling pathway and thus promotes apoptosis (PubMed:25383666). Downstream of ced-4, may play a role in sex-specific cell apoptosis by cleaving sex-determining protein fem-1 (PubMed:10764728). May regulate germline apoptosis in response to DNA damage, probably downstream of let-60/ras and mpk-1 pathway (PubMed:21901106). Cleaves ced-9 in vitro (PubMed:17371877, PubMed:18776901, PubMed:19575016, PubMed:25432023, PubMed:27723735). Cleaves csp-2 isoform b resulting in the removal of the propeptide and the generation of csp-2 subunit p31 in vitro (PubMed:9857046). Independently of its apoptotic role has additional functions. Probably by cleaving and thereby activating actin-severing protein gsnl-1, required for the elimination of transient presynaptic components during larval development downstream of egl-1, ced-9 and ced-4 pathway (PubMed:26074078). Together with ain-1, a component of the miRNA-induced-silencing complex (miRISC), regulates temporal cell fate patterning during larval development (PubMed:25432023). Acts in cell fate patterning by cleaving heterochronic protein lin-28, likely promoting its degradation (PubMed:25432023). Also cleaves heterochronic protein lin-14 and exonuclease disl-2 in vitro (PubMed:25432023). Downstream of calreticulin crt-1 and ced-4 and independently of egl-1 and ced-9, plays a role in the initial steps of axonal regrowth following axotomy (PubMed:22629231). Cleaves 14-3-3-like protein ftt-2, tubulin tbb-2 and calrecticulin crt-1 in vitro (PubMed:17371877). Plays also a role in resistance to S.typhimurium-mediated infection (PubMed:11226309). UniProt
Catalytic Activity
Strict requirement for an Asp residue at position P1 and has a preferred cleavage sequence of Asp-Glu-Val-Asp-|-. UniProt
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Subunit Structure
The active form is probably a heterodimer of the p17 subunit with either the p15 or p13 subunit which are all derived from the precursor by autocatalysis (Probable). Interacts with octameric ced-4 (two ced-3 zymogens per one ced-4 octamer); the interaction causes the autoproteolytic cleavage and activation of ced-3 (PubMed:24065769, PubMed:20434985). Processed ced-3 also interacts with ced-4 octamer to form a stable holoenzyme (PubMed:20434985). Interacts (via large subunit p17) with csp-3; the interaction prevents ced-3 autoactivation and delays ced-4-induced ced-3 processing (PubMed:18776901). Interacts (via large subunit p17 or small subunit p13 or p15) with csp-2; the interaction inhibits ced-3 autoactivation (PubMed:19575016). Interacts (via propeptide) with nucleoporin npp-14; the interaction tethers ced-3 to the nuclear membrane and prevents its autoprocessing in absence of ced-4 (PubMed:27723735). Interacts with dct-1 (PubMed:11114722). May form a complex composed of ced-3, ced-4 and mac-1 (PubMed:10101135). UniProt
Domain
The CARD domain is involved in ced-4 binding. UniProt
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Data in green originates from UniProtKB  
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Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
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Data in blue originates from PDB
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