Seroatlas · Human Serome Atlas

PDPR

Pyruvate dehydrogenase phosphatase regulatory subunit, mitochondrial

Also known as: PDP3, PDPR_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q8NCN5
Gene
PDPR
Ensembl
ENSG00000090857
Chromosome
16
Canonical length
879 aa
Protein class
Metabolic proteins, Predicted intracellular proteins
Subcellular location
Mitochondria

OverviewNCBI Gene

Pyruvate dehydrogenase complex (PDC) catalyzes the oxidative decarboxylation of pyruvate and links glycolysis to the tricarboxylic acid cycle and fatty acid synthesis. The dephosphorylation and reactivation of PDC is catalyzed by pyruvate dehydrogenase phosphatase (PDP). The dimeric PDP has a catalytic subunit and a regulatory subunit. This gene encodes the FAD-containing regulatory subunit of PDP. The encoded protein acts to decrease the sensitivity of the PDP catalytic subunit to magnesium ions. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2017]

Canonical amino-acid sequenceUniProt

879 residues, UniProt reviewed canonical sequence.

>Q8NCN5|PDPR
     1  MMFYRLLSIV GRQRASPGWQ NWSSARNSTS AAEARSMALP TQAQVVICGG GITGTSVAYH
    61  LSKMGWKDIV LLEQGRLAAG STRFCAGILS TARHLTIEQK MADYSNKLYY QLEQETGIQT
   121  GYTRTGSIFL AQTQDRLISL KRINAGLNVI GIPSEIISPK KVAELHHLLN VHDLVGAMHV
   181  PEDAVVSSAD VALALASAAS QNGVQIYDRT SVLHVMVKKG QVTGVETDKG QIECQYFVNC
   241  AGQWAYELGL SNEEPVSIPL HACEHFYLLT RPLETPLQSS TPTIVDADGR IYIRNWQGGI
   301  LSGGFEKNPK PIFTEGKNQL EIQNLQEDWD HFEPLLSSLL RRMPELETLE IMKLVNCPET
   361  FTPDMRCIMG ESPAVQGYFV LAGMNSAGLS FGGGAGKYLA EWMVHGYPSE NVWELDLKRF
   421  GALQSSRTFL RHRVMEVMPL MYDLKVPRWD FQTGRQLRTS PLYDRLDAQG ARWMEKHGFE
   481  RPKYFVPPDK DLLALEQSKT FYKPDWFDIV ESEVKCCKEA VCVIDMSSFT KFEITSTGDQ
   541  ALEVLQYLFS NDLDVPVGHI VHTGMLNEGG GYENDCSIAR LNKRSFFMIS PTDQQVHCWA
   601  WLKKHMPKDS NLLLEDVTWK YTALNLIGPR AVDVLSELSY APMTPDHFPS LFCKEMSVGY
   661  ANGIRVMSMT HTGEPGFMLY IPIEYALHVY NEVMSVGQKY GIRNAGYYAL RSLRIEKFFA
   721  FWGQDINNLT TPLECGRESR VKLEKGMDFI GRDALLQQKQ NGVYKRLTMF ILDDHDSDLD
   781  LWPWWGEPIY RNGQYVGKTT SSAYSYSLER HVCLGFVHNF SEDTGEEQVV TADFINRGEY
   841  EIDIAGYRFQ AKAKLYPVAS LFTQKRRKDD MELSDLHGK

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against PDPR 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
Intracellular
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.22
Highest tissue expression
22 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 22 nTPM
  • cerebellum: 21 nTPM
  • testis: 20 nTPM
  • spleen: 16 nTPM
  • kidney: 15 nTPM
  • bone marrow: 15 nTPM

Single-cell type

  • early spermatids: 79 nCPM
  • adrenal cortex cells: 73 nCPM
  • proximal tubule cells: 72 nCPM
  • distal convoluted tubule cells: 63 nCPM
  • retinal amacrine cells: 59 nCPM
  • podocytes: 59 nCPM

Immune cell

  • MAIT T-cell: 2.1 nTPM
  • basophil: 1.6 nTPM
  • myeloid DC: 1.6 nTPM
  • naive B-cell: 1.6 nTPM
  • plasmacytoid DC: 1.6 nTPM
  • classical monocyte: 1.5 nTPM

Brain region

  • cerebellum: 28 nTPM
  • white matter: 25 nTPM
  • basal ganglia: 25 nTPM
  • midbrain: 23 nTPM
  • thalamus: 23 nTPM
  • medulla oblongata: 22 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)
0.68
gnomAD pLI
0
gnomAD missense Z
-0.49
DepMap mean gene effect
-0.25
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

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads PDPR as an antibody target. Whether an autoantibody or antibody against PDPR could matter depends on whether native PDPR is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

PDPR 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 PDPR as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/PDPR. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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