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 DDLILEIELocalizationUniProt · 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.
- Pyruvate carboxylase deficiency (PC deficiency) MIM:266150
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
- gluconeogenesis
- host-mediated activation of viral process
- lipid metabolic process
- NAD+ metabolic process
- NADP+ metabolic process
- negative regulation of gene expression
- viral release from host cell
- viral RNA genome packaging
Molecular functions
- ATP binding
- biotin binding
- identical protein binding
- metal ion binding
- pyruvate carboxylase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Biotin/lipoyl attachment
- Pyruvate carboxyltransferase
- Biotin-binding site
- Carbamoyl phosphate synthase, ATP-binding domain
- Biotin carboxylase-like, N-terminal domain
- Biotin carboxylase, C-terminal
- Single hybrid motif
- Rudiment single hybrid motif
- ATP-grasp fold
- Biotin carboxylation domain
- Aldolase-type TIM barrel
- Pre-ATP-grasp domain superfamily
- Biotin carboxylase, N-terminal domain
- Biotin-requiring enzyme
- HMGL-like
- Biotin carboxylase C-terminal domain
- Carbamoyl-phosphate synthase L chain, ATP binding domain
- Carboxylase, conserved domain
- Pyruvate carboxylase
- Pyruvate carboxylase-like
- Conserved carboxylase domain
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.
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