SLC16A2
Monocarboxylate transporter 8
Also known as: AHDS, DXS128, DXS128E, MCT7, MCT8, MOT8_HUMAN, MRX22, XPCT
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P36021
- Gene
- SLC16A2
- Ensembl
- ENSG00000147100
- Chromosome
- X
- Canonical length
- 539 aa
- Protein class
- Disease related genes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted membrane proteins, Transporters
- Subcellular location
- Plasma membrane
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene encodes an integral membrane protein that functions as a transporter of thyroid hormone. The encoded protein facilitates the cellular importation of thyroxine (T4), triiodothyronine (T3), reverse triiodothyronine (rT3) and diidothyronine (T2). This gene is expressed in many tissues and likely plays an important role in the development of the central nervous system. Loss of function mutations in this gene are associated with psychomotor retardation in males while females exhibit no neurological defects and more moderate thyroid-deficient phenotypes. This gene is subject to X-chromosome inactivation. Mutations in this gene are the cause of Allan-Herndon-Dudley syndrome. [provided by RefSeq, Mar 2012]
Canonical amino-acid sequenceUniProt
539 residues, UniProt reviewed canonical sequence.
>P36021|SLC16A2
1 MALQSQASEE AKGPWQEADQ EQQEPVGSPE PESEPEPEPE PEPVPVPPPE PQPEPQPLPD
61 PAPLPELEFE SERVHEPEPT PTVETRGTAR GFQPPEGGFG WVVVFAATWC NGSIFGIHNS
121 VGILYSMLLE EEKEKNRQVE FQAAWVGALA MGMIFFCSPI VSIFTDRLGC RITATAGAAV
181 AFIGLHTSSF TSSLSLRYFT YGILFGCGCS FAFQPSLVIL GHYFQRRLGL ANGVVSAGSS
241 IFSMSFPFLI RMLGDKIKLA QTFQVLSTFM FVLMLLSLTY RPLLPSSQDT PSKRGVRTLH
301 QRFLAQLRKY FNMRVFRQRT YRIWAFGIAA AALGYFVPYV HLMKYVEEEF SEIKETWVLL
361 VCIGATSGLG RLVSGHISDS IPGLKKIYLQ VLSFLLLGLM SMMIPLCRDF GGLIVVCLFL
421 GLCDGFFITI MAPIAFELVG PMQASQAIGY LLGMMALPMI AGPPIAGLLR NCFGDYHVAF
481 YFAGVPPIIG AVILFFVPLM HQRMFKKEQR DSSKDKMLAP DPDPNGELLP GSPNPEEPILocalizationUniProt · AlphaFold · HPA
Whether an antibody against SLC16A2 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
- Cell surface
- Secreted
- No
- Transmembrane segments
- 12
- Mean surface accessibility (rSASA)
- 0.35
- Highest tissue expression
- 38 nTPM
Expression across tissuesHPA
Tissue
- liver: 38 nTPM
- adrenal gland: 23 nTPM
- adipose tissue: 13 nTPM
- ovary: 12 nTPM
- thyroid gland: 12 nTPM
- parathyroid gland: 11 nTPM
Single-cell type
- pituitary stem cells: 501 nCPM
- pituicytes/fscs: 124 nCPM
- hepatocytes: 86 nCPM
- adrenal cortex cells: 76 nCPM
- ocular epithelial cells: 61 nCPM
- lactotrophs: 47 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
- hypothalamus: 23 nTPM
- hippocampal formation: 22 nTPM
- cerebral cortex: 20 nTPM
- medulla oblongata: 19 nTPM
- basal ganglia: 18 nTPM
- amygdala: 16 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about SLC16A2.
Disease | AllUniProt
Conditions SLC16A2 is implicated in, by any mechanism.
- Monocarboxylate transporter 8 deficiency (MCT8 deficiency) MIM:300523
Disease | GeneticClinVar
113 pathogenic / likely-pathogenic of 486 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Allan-Herndon-Dudley syndrome
- Spastic paraplegia
- Inborn genetic diseases
- SLC16A2-related disorder
- Intellectual disability
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)
- 0.22
- gnomAD pLI
- 0.99
- gnomAD missense Z
- 2.38
- DepMap mean gene effect
- 0
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- amino acid import across plasma membrane
- amino acid metabolic process
- monocarboxylic acid transport
- negative regulation of neural precursor cell proliferation
- thyroid hormone generation
- thyroid hormone metabolic process
- thyroid hormone transport
- thyroid-stimulating hormone secretion
- transport across blood-brain barrier
Molecular functions
- amino acid transmembrane transporter activity
- identical protein binding
- monocarboxylic acid transmembrane transporter activity
- thyroid hormone transmembrane transporter activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of SLC16A2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads SLC16A2 as an antibody target. Whether an autoantibody or antibody against SLC16A2 could matter depends on whether native SLC16A2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
SLC16A2 is annotated at the cell surface, where native SLC16A2 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label SLC16A2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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