Seroatlas · Human Serome Atlas

PC

Pyruvate carboxylase, mitochondrial

Also known as: PCB, PYC_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P11498
Gene
PC
Ensembl
ENSG00000173599
Chromosome
11
Canonical length
1178 aa
Protein class
Citric acid cycle related proteins, Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
Subcellular location
Mitochondria
Quaternary structure
Homotetramer

OverviewNCBI Gene

This gene encodes pyruvate carboxylase, which requires biotin and ATP to catalyse the carboxylation of pyruvate to oxaloacetate. The active enzyme is a homotetramer arranged in a tetrahedron which is located exclusively in the mitochondrial matrix. Pyruvate carboxylase is involved in gluconeogenesis, lipogenesis, insulin secretion and synthesis of the neurotransmitter glutamate. Mutations in this gene have been associated with pyruvate carboxylase deficiency. Alternatively spliced transcript variants with different 5' UTRs, but encoding the same protein, have been found for this gene. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

1178 residues, UniProt reviewed canonical sequence.

>P11498|PC
     1  MLKFRTVHGG LRLLGIRRTS TAPAASPNVR RLEYKPIKKV MVANRGEIAI RVFRACTELG
    61  IRTVAIYSEQ DTGQMHRQKA DEAYLIGRGL APVQAYLHIP DIIKVAKENN VDAVHPGYGF
   121  LSERADFAQA CQDAGVRFIG PSPEVVRKMG DKVEARAIAI AAGVPVVPGT DAPITSLHEA
   181  HEFSNTYGFP IIFKAAYGGG GRGMRVVHSY EELEENYTRA YSEALAAFGN GALFVEKFIE
   241  KPRHIEVQIL GDQYGNILHL YERDCSIQRR HQKVVEIAPA AHLDPQLRTR LTSDSVKLAK
   301  QVGYENAGTV EFLVDRHGKH YFIEVNSRLQ VEHTVTEEIT DVDLVHAQIH VAEGRSLPDL
   361  GLRQENIRIN GCAIQCRVTT EDPARSFQPD TGRIEVFRSG EGMGIRLDNA SAFQGAVISP
   421  HYDSLLVKVI AHGKDHPTAA TKMSRALAEF RVRGVKTNIA FLQNVLNNQQ FLAGTVDTQF
   481  IDENPELFQL RPAQNRAQKL LHYLGHVMVN GPTTPIPVKA SPSPTDPVVP AVPIGPPPAG
   541  FRDILLREGP EGFARAVRNH PGLLLMDTTF RDAHQSLLAT RVRTHDLKKI APYVAHNFSK
   601  LFSMENWGGA TFDVAMRFLY ECPWRRLQEL RELIPNIPFQ MLLRGANAVG YTNYPDNVVF
   661  KFCEVAKENG MDVFRVFDSL NYLPNMLLGM EAAGSAGGVV EAAISYTGDV ADPSRTKYSL
   721  QYYMGLAEEL VRAGTHILCI KDMAGLLKPT ACTMLVSSLR DRFPDLPLHI HTHDTSGAGV
   781  AAMLACAQAG ADVVDVAADS MSGMTSQPSM GALVACTRGT PLDTEVPMER VFDYSEYWEG
   841  ARGLYAAFDC TATMKSGNSD VYENEIPGGQ YTNLHFQAHS MGLGSKFKEV KKAYVEANQM
   901  LGDLIKVTPS SKIVGDLAQF MVQNGLSRAE AEAQAEELSF PRSVVEFLQG YIGVPHGGFP
   961  EPFRSKVLKD LPRVEGRPGA SLPPLDLQAL EKELVDRHGE EVTPEDVLSA AMYPDVFAHF
  1021  KDFTATFGPL DSLNTRLFLQ GPKIAEEFEV ELERGKTLHI KALAVSDLNR AGQRQVFFEL
  1081  NGQLRSILVK DTQAMKEMHF HPKALKDVKG QIGAPMPGKV IDIKVVAGAK VAKGQPLCVL
  1141  SAMKMETVVT SPMEGTVRKV HVTKDMTLEG DDLILEIE

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against PC 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)
0.23
Highest tissue expression
182 nTPM

Expression across tissuesHPA

Tissue

  • liver: 182 nTPM
  • adipose tissue: 57 nTPM
  • basal ganglia: 39 nTPM
  • cerebral cortex: 38 nTPM
  • midbrain: 36 nTPM
  • salivary gland: 33 nTPM

Single-cell type

  • adipocytes: 253 nCPM
  • hepatocytes: 250 nCPM
  • proximal tubule cells: 104 nCPM
  • lacrimal acinar cells: 98 nCPM
  • late spermatids: 90 nCPM
  • salivary acinar cells: 72 nCPM

Immune cell

  • classical monocyte: 1.3 nTPM
  • myeloid DC: 0.9 nTPM
  • naive CD4 T-cell: 0.9 nTPM
  • total PBMC: 0.7 nTPM
  • gdT-cell: 0.5 nTPM
  • MAIT T-cell: 0.5 nTPM

Brain region

  • thalamus: 91 nTPM
  • medulla oblongata: 78 nTPM
  • hypothalamus: 73 nTPM
  • midbrain: 71 nTPM
  • spinal cord: 67 nTPM
  • pons: 64 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about PC.

Disease | AllUniProt

Conditions PC is implicated in, by any mechanism.

Disease | GeneticClinVar

180 pathogenic / likely-pathogenic of 1,527 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
0.44
gnomAD pLI
0.01
gnomAD missense Z
3.06
DepMap mean gene effect
-0.32
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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

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

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

Canonical record: https://seroatlas.com/gene/PC. 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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