SLC25A27
Mitochondrial uncoupling protein 4
Also known as: FLJ33552, UCP4, UCP4_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O95847
- Gene
- SLC25A27
- Ensembl
- ENSG00000153291
- Chromosome
- 6
- Canonical length
- 323 aa
- Protein class
- Metabolic proteins, Plasma proteins, Predicted intracellular proteins, Predicted membrane proteins, Transporters
- Subcellular location
- Mitochondria
- Quaternary structure
- Homotetramer
OverviewNCBI Gene
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. Transcripts of this gene are only detected in brain tissue and are specifically modulated by various environmental conditions. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Feb 2011]
Canonical amino-acid sequenceUniProt
323 residues, UniProt reviewed canonical sequence.
>O95847|SLC25A27
1 MSVPEEEERL LPLTQRWPRA SKFLLSGCAA TVAELATFPL DLTKTRLQMQ GEAALARLGD
61 GARESAPYRG MVRTALGIIE EEGFLKLWQG VTPAIYRHVV YSGGRMVTYE HLREVVFGKS
121 EDEHYPLWKS VIGGMMAGVI GQFLANPTDL VKVQMQMEGK RKLEGKPLRF RGVHHAFAKI
181 LAEGGIRGLW AGWVPNIQRA ALVNMGDLTT YDTVKHYLVL NTPLEDNIMT HGLSSLCSGL
241 VASILGTPAD VIKSRIMNQP RDKQGRGLLY KSSTDCLIQA VQGEGFMSLY KGFLPSWLRM
301 TPWSMVFWLT YEKIREMSGV SPFLocalizationUniProt · AlphaFold · HPA
Whether an antibody against SLC25A27 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Other membrane
- Secreted
- No
- Transmembrane segments
- 6
- Mean surface accessibility (rSASA)
- 0.3
- Highest tissue expression
- 110 nTPM
Expression across tissuesHPA
Tissue
- retina: 110 nTPM
- pituitary gland: 107 nTPM
- ovary: 92 nTPM
- cerebellum: 78 nTPM
- choroid plexus: 72 nTPM
- prostate: 70 nTPM
Single-cell type
- thyrotrophs: 314 nCPM
- oligodendrocyte progenitor cells: 167 nCPM
- cardiomyocytes: 163 nCPM
- choroid plexus epithelial cells: 147 nCPM
- somatotrophs: 145 nCPM
- gonadotrophs: 141 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- cerebellum: 154 nTPM
- white matter: 110 nTPM
- basal ganglia: 92 nTPM
- thalamus: 88 nTPM
- cerebral cortex: 87 nTPM
- choroid plexus: 84 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.72
- gnomAD pLI
- 0
- gnomAD missense Z
- 1.34
- DepMap mean gene effect
- -0.12
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- inner ear development
- intracellular triglyceride homeostasis
- negative regulation of mitochondrial calcium ion concentration
- negative regulation of mitochondrial membrane potential
- negative regulation of neuron apoptotic process
- positive regulation of cell population proliferation
- regulation of D-glucose import
- response to cold
Molecular functions
- chloride transmembrane transporter activity
- protein homodimerization activity
- proton transmembrane transporter activity
- transmembrane transporter activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads SLC25A27 as an antibody target. Whether an autoantibody or antibody against SLC25A27 could matter depends on whether native SLC25A27 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
SLC25A27 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label SLC25A27 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
Loading the interactive Seroatlas protein explorer...