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    PET100 PET100 cytochrome c oxidase chaperone [ Homo sapiens (human) ]

    Gene ID: 100131801, updated on 25-Nov-2025
    Official Symbol
    PET100provided by HGNC
    Official Full Name
    PET100 cytochrome c oxidase chaperoneprovided by HGNC
    Primary source
    HGNC:HGNC:40038
    See related
    Ensembl:ENSG00000229833 MIM:614770; AllianceGenome:HGNC:40038
    Gene type
    protein coding
    RefSeq status
    REVIEWED
    Organism
    Homo sapiens
    Lineage
    Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
    Also known as
    MC4DN12; C19orf79
    Summary
    Mitochondrial complex IV, or cytochrome c oxidase, is a large transmembrane protein complex that is part of the respiratory electron transport chain of mitochondria. The small protein encoded by this gene plays a role in the biogenesis of mitochondrial complex IV. This protein localizes to the inner mitochondrial membrane and is exposed to the intermembrane space. Mutations in this gene are associated with mitochondrial complex IV deficiency. This gene has a pseudogene on chromosome 3. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2014]
    Expression
    Ubiquitous expression in kidney (RPKM 40.1), colon (RPKM 37.0) and 25 other tissues See more
    Orthologs
    Try the new Gene page
    Try the new Transcripts and proteins table
    See PET100 in Genome Data Viewer
    Location:
    19p13.2
    Exon count:
    5
    Annotation release Status Assembly Chr Location
    RS_2025_08 current GRCh38.p14 (GCF_000001405.40) 19 NC_000019.10 (7629793..7631956)
    RS_2025_08 current T2T-CHM13v2.0 (GCF_009914755.1) 19 NC_060943.1 (7630676..7632839)
    RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 19 NC_000019.9 (7694679..7696842)

    Chromosome 19 - NC_000019.10Genomic Context describing neighboring genes Neighboring gene calmodulin regulated spectrin associated protein family member 3 Neighboring gene microRNA 6792 Neighboring gene XPA binding protein 2 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 13888 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 13889 Neighboring gene syntaxin binding protein 2 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr19:7701542-7702069 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr19:7702070-7702598 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr19:7702599-7703125 Neighboring gene Purkinje cell protein 2 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 9989 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 13890 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 13891 Neighboring gene RPS27A pseudogene 19 Neighboring gene resistin

    • Project title: Tissue-specific circular RNA induction during human fetal development
    • Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
    • BioProject: PRJNA270632
    • Publication: PMID 26076956
    • Analysis date: Mon Apr 2 22:54:59 2018

    GeneRIFs: Gene References Into Functions

    What's a GeneRIF?
    Products Interactant Other Gene Complex Source Pubs Description

    Markers

    Clone Names

    • FLJ42727

    Gene Ontology Provided by GOA

    Function Evidence Code Pubs
    enables unfolded protein binding IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    Process Evidence Code Pubs
    involved_in mitochondrial respiratory chain complex IV assembly IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    involved_in mitochondrial respiratory chain complex IV assembly IEA
    Inferred from Electronic Annotation
    more info
     
    Component Evidence Code Pubs
    located_in membrane IEA
    Inferred from Electronic Annotation
    more info
     
    is_active_in mitochondrial inner membrane IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    located_in mitochondrial inner membrane IEA
    Inferred from Electronic Annotation
    more info
     
    located_in mitochondrion HTP PubMed 
    located_in mitochondrion IEA
    Inferred from Electronic Annotation
    more info
     
    Preferred Names
    protein PET100 homolog, mitochondrial
    Names
    PET100 homolog

    NEW Try the new Transcript table

    RefSeqs maintained independently of Annotated Genomes

    These reference sequences exist independently of genome builds. Explain

    These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

    Genomic

    1. NG_034117.1 RefSeqGene

      Range
      5009..7172
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    mRNA and Protein(s)

    1. NM_001171155.2NP_001164626.1  protein PET100 homolog, mitochondrial

      See identical proteins and their annotated locations for NP_001164626.1

      Status: REVIEWED

      Description
      Transcript Variant: This variant (1) represents the shorter transcript and encodes the functional protein.
      Source sequence(s)
      AC008763, BU740873, CD641681
      Consensus CDS
      CCDS54208.1
      UniProtKB/Swiss-Prot
      P0DJ07
      Related
      ENSP00000470539.1, ENST00000594797.6
      Conserved Domains (1) summary
      pfam09803
      Location:259
      Pet100

    RNA

    1. NR_033242.2 RNA Sequence

      Status: REVIEWED

      Description
      Transcript Variant: This variant (2) contains an alternate internal exon, compared to variant 1. This variant is represented as non-coding because the use of the 5'-most supported translational start codon, as used in variant 1, renders the transcript a candidate for nonsense-mediated mRNA decay (NMD).
      Source sequence(s)
      AC008763, BU740873, CB119056, CD641681

    RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2025_08

    The following sections contain reference sequences that belong to a specific genome build. Explain

    Reference GRCh38.p14 Primary Assembly

    Genomic

    1. NC_000019.10 Reference GRCh38.p14 Primary Assembly

      Range
      7629793..7631956
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    Alternate T2T-CHM13v2.0

    Genomic

    1. NC_060943.1 Alternate T2T-CHM13v2.0

      Range
      7630676..7632839
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)