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Protein

Cysteine protease ATG4C

Gene

ATG4C

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Cysteine protease required for the cytoplasm to vacuole transport (Cvt) and autophagy. Is not essential for autophagy development under normal conditions but is required for a proper autophagic response under stressful conditions such as prolonged starvation (By similarity). Cleaves the C-terminal amino acid of ATG8 family proteins MAP1LC3 and GABARAPL2, to reveal a C-terminal glycine. Exposure of the glycine at the C-terminus is essential for ATG8 proteins conjugation to phosphatidylethanolamine (PE) and insertion to membranes, which is necessary for autophagy. Has also an activity of delipidating enzyme for the PE-conjugated forms.By similarity1 Publication

Enzyme regulationi

Inhibited by N-ethylmaleimide.

Kineticsi

  1. KM=47.5 µM for MAP1LC3B1 Publication
  2. KM=12.4 µM for GABARAPL21 Publication

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Active sitei111NucleophileBy similarity1
    Active sitei345Sequence analysis1
    Active sitei347By similarity1

    GO - Molecular functioni

    • cysteine-type endopeptidase activity Source: UniProtKB
    • peptidase activity Source: UniProtKB

    GO - Biological processi

    • autophagosome assembly Source: UniProtKB
    • autophagy Source: UniProtKB
    • C-terminal protein lipidation Source: GO_Central
    • mitophagy Source: GO_Central
    • nucleophagy Source: GO_Central
    • protein delipidation Source: GO_Central
    • protein processing Source: GO_Central
    • protein targeting to membrane Source: UniProtKB
    • proteolysis Source: UniProtKB
    Complete GO annotation...

    Keywords - Molecular functioni

    Hydrolase, Protease, Thiol protease

    Keywords - Biological processi

    Autophagy, Protein transport, Transport, Ubl conjugation pathway

    Enzyme and pathway databases

    ReactomeiR-HSA-1632852. Macroautophagy.

    Protein family/group databases

    MEROPSiC54.004.

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    Cysteine protease ATG4C (EC:3.4.22.-)
    Alternative name(s):
    AUT-like 3 cysteine endopeptidase
    Autophagin-3
    Autophagy-related cysteine endopeptidase 3
    Autophagy-related protein 4 homolog C
    Gene namesi
    Name:ATG4C
    Synonyms:APG4C, AUTL1, AUTL3
    OrganismiHomo sapiens (Human)
    Taxonomic identifieri9606 [NCBI]
    Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
    Proteomesi
    • UP000005640 Componenti: Chromosome 1

    Organism-specific databases

    HGNCiHGNC:16040. ATG4C.

    Subcellular locationi

    GO - Cellular componenti

    • cytoplasm Source: UniProtKB
    • cytosol Source: UniProtKB
    • extracellular region Source: UniProtKB
    Complete GO annotation...

    Keywords - Cellular componenti

    Cytoplasm

    Pathology & Biotechi

    Organism-specific databases

    DisGeNETi84938.
    OpenTargetsiENSG00000125703.
    PharmGKBiPA25183.

    Polymorphism and mutation databases

    BioMutaiATG4C.
    DMDMi61211867.

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    ChainiPRO_00002158491 – 458Cysteine protease ATG4CAdd BLAST458

    Amino acid modifications

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Modified residuei1N-acetylmethionineCombined sources1
    Modified residuei451PhosphoserineCombined sources1
    Modified residuei452PhosphothreonineCombined sources1

    Keywords - PTMi

    Acetylation, Phosphoprotein

    Proteomic databases

    EPDiQ96DT6.
    MaxQBiQ96DT6.
    PaxDbiQ96DT6.
    PeptideAtlasiQ96DT6.
    PRIDEiQ96DT6.

    PTM databases

    iPTMnetiQ96DT6.
    PhosphoSitePlusiQ96DT6.

    Expressioni

    Tissue specificityi

    Highly expressed in skeletal muscle, heart, liver and testis.1 Publication

    Gene expression databases

    BgeeiENSG00000125703.
    CleanExiHS_ATG4C.
    ExpressionAtlasiQ96DT6. baseline and differential.
    GenevisibleiQ96DT6. HS.

    Organism-specific databases

    HPAiHPA007049.

    Interactioni

    Protein-protein interaction databases

    BioGridi124372. 13 interactors.
    IntActiQ96DT6. 9 interactors.
    STRINGi9606.ENSP00000322159.

    Structurei

    3D structure databases

    ProteinModelPortaliQ96DT6.
    ModBaseiSearch...
    MobiDBiSearch...

    Family & Domainsi

    Sequence similaritiesi

    Belongs to the peptidase C54 family.Curated

    Phylogenomic databases

    eggNOGiKOG2674. Eukaryota.
    ENOG410XPQ0. LUCA.
    GeneTreeiENSGT00530000063000.
    HOGENOMiHOG000294192.
    HOVERGENiHBG050537.
    InParanoidiQ96DT6.
    KOiK08342.
    OMAiSWTSNTV.
    OrthoDBiEOG091G065S.
    PhylomeDBiQ96DT6.
    TreeFamiTF314847.

    Family and domain databases

    InterProiIPR032915. ATG4C.
    IPR005078. Peptidase_C54.
    [Graphical view]
    PANTHERiPTHR22624. PTHR22624. 2 hits.
    PTHR22624:SF38. PTHR22624:SF38. 2 hits.
    PfamiPF03416. Peptidase_C54. 1 hit.
    [Graphical view]

    Sequencei

    Sequence statusi: Complete.

    Q96DT6-1 [UniParc]FASTAAdd to basket

    « Hide

            10         20         30         40         50
    MEATGTDEVD KLKTKFISAW NNMKYSWVLK TKTYFSRNSP VLLLGKCYHF
    60 70 80 90 100
    KYEDEDKTLP AESGCTIEDH VIAGNVEEFR KDFISRIWLT YREEFPQIEG
    110 120 130 140 150
    SALTTDCGWG CTLRTGQMLL AQGLILHFLG RAWTWPDALN IENSDSESWT
    160 170 180 190 200
    SHTVKKFTAS FEASLSGERE FKTPTISLKE TIGKYSDDHE MRNEVYHRKI
    210 220 230 240 250
    ISWFGDSPLA LFGLHQLIEY GKKSGKKAGD WYGPAVVAHI LRKAVEEARH
    260 270 280 290 300
    PDLQGITIYV AQDCTVYNSD VIDKQSASMT SDNADDKAVI ILVPVRLGGE
    310 320 330 340 350
    RTNTDYLEFV KGILSLEYCV GIIGGKPKQS YYFAGFQDDS LIYMDPHYCQ
    360 370 380 390 400
    SFVDVSIKDF PLETFHCPSP KKMSFRKMDP SCTIGFYCRN VQDFKRASEE
    410 420 430 440 450
    ITKMLKFSSK EKYPLFTFVN GHSRDYDFTS TTTNEEDLFS EDEKKQLKRF

    STEEFVLL
    Length:458
    Mass (Da):52,497
    Last modified:December 1, 2001 - v1
    Checksum:i6A23A05E7F20AF27
    GO

    Sequence cautioni

    The sequence BAB55356 differs from that shown. Reason: Frameshift at position 420.Curated

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    AJ312234 mRNA. Translation: CAC85556.1.
    AJ320169 mRNA. Translation: CAC43939.1.
    AK027773 mRNA. Translation: BAB55356.1. Frameshift.
    AC103923 Genomic DNA. No translation available.
    CH471059 Genomic DNA. Translation: EAX06579.1.
    CH471059 Genomic DNA. Translation: EAX06580.1.
    BC033024 mRNA. Translation: AAH33024.1.
    CCDSiCCDS623.1.
    RefSeqiNP_116241.2. NM_032852.3.
    NP_835739.1. NM_178221.2.
    XP_005271345.1. XM_005271288.2.
    UniGeneiHs.7353.

    Genome annotation databases

    EnsembliENST00000317868; ENSP00000322159; ENSG00000125703.
    ENST00000371120; ENSP00000360161; ENSG00000125703.
    GeneIDi84938.
    KEGGihsa:84938.
    UCSCiuc001dat.5. human.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    AJ312234 mRNA. Translation: CAC85556.1.
    AJ320169 mRNA. Translation: CAC43939.1.
    AK027773 mRNA. Translation: BAB55356.1. Frameshift.
    AC103923 Genomic DNA. No translation available.
    CH471059 Genomic DNA. Translation: EAX06579.1.
    CH471059 Genomic DNA. Translation: EAX06580.1.
    BC033024 mRNA. Translation: AAH33024.1.
    CCDSiCCDS623.1.
    RefSeqiNP_116241.2. NM_032852.3.
    NP_835739.1. NM_178221.2.
    XP_005271345.1. XM_005271288.2.
    UniGeneiHs.7353.

    3D structure databases

    ProteinModelPortaliQ96DT6.
    ModBaseiSearch...
    MobiDBiSearch...

    Protein-protein interaction databases

    BioGridi124372. 13 interactors.
    IntActiQ96DT6. 9 interactors.
    STRINGi9606.ENSP00000322159.

    Protein family/group databases

    MEROPSiC54.004.

    PTM databases

    iPTMnetiQ96DT6.
    PhosphoSitePlusiQ96DT6.

    Polymorphism and mutation databases

    BioMutaiATG4C.
    DMDMi61211867.

    Proteomic databases

    EPDiQ96DT6.
    MaxQBiQ96DT6.
    PaxDbiQ96DT6.
    PeptideAtlasiQ96DT6.
    PRIDEiQ96DT6.

    Protocols and materials databases

    DNASUi84938.
    Structural Biology KnowledgebaseSearch...

    Genome annotation databases

    EnsembliENST00000317868; ENSP00000322159; ENSG00000125703.
    ENST00000371120; ENSP00000360161; ENSG00000125703.
    GeneIDi84938.
    KEGGihsa:84938.
    UCSCiuc001dat.5. human.

    Organism-specific databases

    CTDi84938.
    DisGeNETi84938.
    GeneCardsiATG4C.
    HGNCiHGNC:16040. ATG4C.
    HPAiHPA007049.
    MIMi611339. gene.
    neXtProtiNX_Q96DT6.
    OpenTargetsiENSG00000125703.
    PharmGKBiPA25183.
    GenAtlasiSearch...

    Phylogenomic databases

    eggNOGiKOG2674. Eukaryota.
    ENOG410XPQ0. LUCA.
    GeneTreeiENSGT00530000063000.
    HOGENOMiHOG000294192.
    HOVERGENiHBG050537.
    InParanoidiQ96DT6.
    KOiK08342.
    OMAiSWTSNTV.
    OrthoDBiEOG091G065S.
    PhylomeDBiQ96DT6.
    TreeFamiTF314847.

    Enzyme and pathway databases

    ReactomeiR-HSA-1632852. Macroautophagy.

    Miscellaneous databases

    ChiTaRSiATG4C. human.
    GenomeRNAii84938.
    PROiQ96DT6.
    SOURCEiSearch...

    Gene expression databases

    BgeeiENSG00000125703.
    CleanExiHS_ATG4C.
    ExpressionAtlasiQ96DT6. baseline and differential.
    GenevisibleiQ96DT6. HS.

    Family and domain databases

    InterProiIPR032915. ATG4C.
    IPR005078. Peptidase_C54.
    [Graphical view]
    PANTHERiPTHR22624. PTHR22624. 2 hits.
    PTHR22624:SF38. PTHR22624:SF38. 2 hits.
    PfamiPF03416. Peptidase_C54. 1 hit.
    [Graphical view]
    ProtoNetiSearch...

    Entry informationi

    Entry nameiATG4C_HUMAN
    AccessioniPrimary (citable) accession number: Q96DT6
    Secondary accession number(s): A6NLR8, D3DQ58, Q96K04
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: March 15, 2005
    Last sequence update: December 1, 2001
    Last modified: November 2, 2016
    This is version 118 of the entry and version 1 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programChordata Protein Annotation Program
    DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

    Miscellaneousi

    Keywords - Technical termi

    Complete proteome, Reference proteome

    Documents

    1. Human chromosome 1
      Human chromosome 1: entries, gene names and cross-references to MIM
    2. MIM cross-references
      Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
    3. Peptidase families
      Classification of peptidase families and list of entries
    4. SIMILARITY comments
      Index of protein domains and families

    Similar proteinsi

    Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
    100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
    90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
    50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.