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    UCP2 uncoupling protein 2 [ Homo sapiens (human) ]

    Gene ID: 7351, updated on 25-Nov-2025
    Official Symbol
    UCP2provided by HGNC
    Official Full Name
    uncoupling protein 2provided by HGNC
    Primary source
    HGNC:HGNC:12518
    See related
    Ensembl:ENSG00000175567 MIM:601693; AllianceGenome:HGNC:12518
    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
    UCPH; BMIQ4; SLC25A8
    Summary
    Mitochondrial uncoupling proteins (UCP) are members of the larger family of mitochondrial anion carrier proteins (MACP). UCPs separate oxidative phosphorylation from ATP synthesis with energy dissipated as heat, also referred to as the mitochondrial proton leak. UCPs facilitate the transfer of anions from the inner to the outer mitochondrial membrane and the return transfer of protons from the outer to the inner mitochondrial membrane. They also reduce the mitochondrial membrane potential in mammalian cells. Tissue specificity occurs for the different UCPs and the exact methods of how UCPs transfer H+/OH- are not known. UCPs contain the three homologous protein domains of MACPs. This gene is expressed in many tissues, with the greatest expression in skeletal muscle. It is thought to play a role in nonshivering thermogenesis, obesity and diabetes. Chromosomal order is 5'-UCP3-UCP2-3'. [provided by RefSeq, Jul 2008]
    Expression
    Broad expression in lymph node (RPKM 136.6), spleen (RPKM 105.7) and 20 other tissues See more
    Orthologs
    Try the new Gene page
    Try the new Transcripts and proteins table
    See UCP2 in Genome Data Viewer
    Location:
    11q13.4
    Exon count:
    11
    Annotation release Status Assembly Chr Location
    RS_2025_08 current GRCh38.p14 (GCF_000001405.40) 11 NC_000011.10 (73974672..73983202, complement)
    RS_2025_08 current T2T-CHM13v2.0 (GCF_009914755.1) 11 NC_060935.1 (73903817..73912347, complement)
    RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 11 NC_000011.9 (73685717..73694247, complement)

    Chromosome 11 - NC_000011.10Genomic Context describing neighboring genes Neighboring gene proteasomal ATPase associated factor 1 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr11:73637447-73637946 Neighboring gene actin related protein 2/3 complex subunit 3 pseudogene 4 Neighboring gene ReSE screen-validated silencer GRCh37_chr11:73643667-73643917 Neighboring gene H3K27ac hESC enhancer GRCh37_chr11:73647840-73648474 Neighboring gene DnaJ heat shock protein family (Hsp40) member B13 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3749 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3750 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5246 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5247 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5248 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3751 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3752 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr11:73694725-73695225 Neighboring gene family with sequence similarity 91 member A1 pseudogene Neighboring gene DPPA4 pseudogene 3

    • 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

    Gene Ontology Provided by GOA

    Process Evidence Code Pubs
    involved_in C4-dicarboxylate transport IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    involved_in L-aspartate transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in adaptive thermogenesis IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    involved_in cellular response to amino acid starvation IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in cellular response to glucose stimulus IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in cellular response to glucose stimulus ISS
    Inferred from Sequence or Structural Similarity
    more info
     
    involved_in cellular response to hormone stimulus IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in cellular response to insulin stimulus IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in cellular response to lead ion IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in chloride transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in glutamine metabolic process IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    involved_in glycolytic process IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    involved_in liver regeneration IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in long-chain fatty acid transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in macrophage differentiation IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in macrophage differentiation ISS
    Inferred from Sequence or Structural Similarity
    more info
     
    involved_in malate transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in mitochondrial fission IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in mitochondrial fission ISS
    Inferred from Sequence or Structural Similarity
    more info
     
    involved_in mitochondrial transmembrane transport IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    involved_in mitochondrial transmembrane transport IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    involved_in mitochondrial transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in negative regulation of apoptotic process IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in negative regulation of calcium import into the mitochondrion IDA
    Inferred from Direct Assay
    more info
    PubMed 
    involved_in negative regulation of insulin secretion involved in cellular response to glucose stimulus IEA
    Inferred from Electronic Annotation
    more info
     
    acts_upstream_of_or_within negative regulation of neuron apoptotic process IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in oxaloacetate(2-) transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in positive regulation of cold-induced thermogenesis IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    involved_in positive regulation of cold-induced thermogenesis IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in positive regulation of cold-induced thermogenesis ISS
    Inferred from Sequence or Structural Similarity
    more info
    PubMed 
    involved_in proton transmembrane transport TAS
    Traceable Author Statement
    more info
    PubMed 
    involved_in reactive oxygen species metabolic process IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in reactive oxygen species metabolic process ISS
    Inferred from Sequence or Structural Similarity
    more info
     
    involved_in regulation of mitochondrial membrane potential IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in response to cold IBA
    Inferred from Biological aspect of Ancestor
    more info
     
    involved_in response to dexamethasone IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in response to fatty acid IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in response to glucose IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in response to hypoxia IDA
    Inferred from Direct Assay
    more info
    PubMed 
    involved_in response to hypoxia IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in response to superoxide IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in sulfate transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
     
    Component Evidence Code Pubs
    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 mitochondrial inner membrane NAS
    Non-traceable Author Statement
    more info
    PubMed 
    located_in mitochondrial inner membrane TAS
    Traceable Author Statement
    more info
     
    located_in mitochondrial membrane IEA
    Inferred from Electronic Annotation
    more info
     
    located_in mitochondrion HTP PubMed 
    located_in mitochondrion IDA
    Inferred from Direct Assay
    more info
     
    Preferred Names
    dicarboxylate carrier SLC25A8
    Names
    mitochondrial uncoupling protein 2
    solute carrier family 25 member 8
    uncoupling protein 2 (mitochondrial, proton carrier)

    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_011478.1 RefSeqGene

      Range
      5002..13173
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    mRNA and Protein(s)

    1. NM_001381943.1NP_001368872.1  dicarboxylate carrier SLC25A8 isoform a

      Status: REVIEWED

      Description
      Transcript Variant: This variant (1) represents the longest transcript and encodes the longest isoform (a). Variants 1-6 all encode the same isoform (a).
      Source sequence(s)
      AP003717
      Consensus CDS
      CCDS8228.1
      UniProtKB/Swiss-Prot
      P55851, Q4PJH8, Q53HM3
      Conserved Domains (1) summary
      pfam00153
      Location:112206
      Mito_carr; Mitochondrial carrier protein
    2. NM_001381944.1NP_001368873.1  dicarboxylate carrier SLC25A8 isoform a

      Status: REVIEWED

      Description
      Transcript Variant: This variant (3) differs in the 5' UTR compared to variant 1. Variants 1-6 all encode the same isoform (a).
      Source sequence(s)
      AP003717
      Consensus CDS
      CCDS8228.1
      UniProtKB/Swiss-Prot
      P55851, Q4PJH8, Q53HM3
      Related
      ENSP00000550206.1, ENST00000880147.1
      Conserved Domains (1) summary
      pfam00153
      Location:112206
      Mito_carr; Mitochondrial carrier protein
    3. NM_001381945.1NP_001368874.1  dicarboxylate carrier SLC25A8 isoform a

      Status: REVIEWED

      Description
      Transcript Variant: This variant (4) differs in the 5' UTR compared to variant 1. Variants 1-6 all encode the same isoform (a).
      Source sequence(s)
      AP003717
      Consensus CDS
      CCDS8228.1
      UniProtKB/Swiss-Prot
      P55851, Q4PJH8, Q53HM3
      Related
      ENSP00000312029.3, ENST00000310473.11
      Conserved Domains (1) summary
      pfam00153
      Location:112206
      Mito_carr; Mitochondrial carrier protein
    4. NM_001381947.1NP_001368876.1  dicarboxylate carrier SLC25A8 isoform a

      Status: REVIEWED

      Description
      Transcript Variant: This variant (5) differs in the 5' UTR compared to variant 1. Variants 1-6 all encode the same isoform (a).
      Source sequence(s)
      AP003717
      Consensus CDS
      CCDS8228.1
      UniProtKB/Swiss-Prot
      P55851, Q4PJH8, Q53HM3
      Related
      ENSP00000550208.1, ENST00000880149.1
      Conserved Domains (1) summary
      pfam00153
      Location:112206
      Mito_carr; Mitochondrial carrier protein
    5. NM_001381948.1NP_001368877.1  dicarboxylate carrier SLC25A8 isoform a

      Status: REVIEWED

      Description
      Transcript Variant: This variant (6) differs in the 5' UTR compared to variant 1. Variants 1-6 all encode the same isoform (a).
      Source sequence(s)
      AP003717
      Consensus CDS
      CCDS8228.1
      UniProtKB/Swiss-Prot
      P55851, Q4PJH8, Q53HM3
      Related
      ENSP00000582438.1, ENST00000912379.1
      Conserved Domains (1) summary
      pfam00153
      Location:112206
      Mito_carr; Mitochondrial carrier protein
    6. NM_001381949.1NP_001368878.1  dicarboxylate carrier SLC25A8 isoform b

      Status: REVIEWED

      Source sequence(s)
      AP003717
      Conserved Domains (1) summary
      pfam00153
      Location:10111
      Mito_carr; Mitochondrial carrier protein
    7. NM_001381950.1NP_001368879.1  dicarboxylate carrier SLC25A8 isoform c

      Status: REVIEWED

      Source sequence(s)
      AP003717
      Related
      ENSP00000550207.1, ENST00000880148.1
      Conserved Domains (1) summary
      pfam00153
      Location:10111
      Mito_carr; Mitochondrial carrier protein
    8. NM_003355.3NP_003346.2  dicarboxylate carrier SLC25A8 isoform a

      See identical proteins and their annotated locations for NP_003346.2

      Status: REVIEWED

      Description
      Transcript Variant: This variant (2) differs in the 5' UTR compared to variant 1. Variants 1-6 all encode the same isoform (a).
      Source sequence(s)
      AP003717
      Consensus CDS
      CCDS8228.1
      UniProtKB/Swiss-Prot
      P55851, Q4PJH8, Q53HM3
      Related
      ENSP00000499695.1, ENST00000663595.2
      Conserved Domains (1) summary
      pfam00153
      Location:112206
      Mito_carr; Mitochondrial carrier protein

    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_000011.10 Reference GRCh38.p14 Primary Assembly

      Range
      73974672..73983202 complement
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    Alternate T2T-CHM13v2.0

    Genomic

    1. NC_060935.1 Alternate T2T-CHM13v2.0

      Range
      73903817..73912347 complement
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)