Seroatlas · Human Serome Atlas

MCCC1

Methylcrotonoyl-CoA carboxylase subunit alpha, mitochondrial

Also known as: MCCA, MCCA_HUMAN, MCCCalpha

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

Protein identityUniProt · HPA

UniProt accession
Q96RQ3
Gene
MCCC1
Ensembl
ENSG00000078070
Chromosome
3
Canonical length
725 aa
Protein class
Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
Subcellular location
Mitochondria

OverviewNCBI Gene

This gene encodes the large subunit of 3-methylcrotonyl-CoA carboxylase. This enzyme functions as a heterodimer and catalyzes the carboxylation of 3-methylcrotonyl-CoA to form 3-methylglutaconyl-CoA. Mutations in this gene are associated with 3-Methylcrotonylglycinuria, an autosomal recessive disorder of leucine catabolism. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

725 residues, UniProt reviewed canonical sequence.

>Q96RQ3|MCCC1
     1  MAAASAVSVL LVAAERNRWH RLPSLLLPPR TWVWRQRTMK YTTATGRNIT KVLIANRGEI
    61  ACRVMRTAKK LGVQTVAVYS EADRNSMHVD MADEAYSIGP APSQQSYLSM EKIIQVAKTS
   121  AAQAIHPGCG FLSENMEFAE LCKQEGIIFI GPPPSAIRDM GIKSTSKSIM AAAGVPVVEG
   181  YHGEDQSDQC LKEHARRIGY PVMIKAVRGG GGKGMRIVRS EQEFQEQLES ARREAKKSFN
   241  DDAMLIEKFV DTPRHVEVQV FGDHHGNAVY LFERDCSVQR RHQKIIEEAP APGIKSEVRK
   301  KLGEAAVRAA KAVNYVGAGT VEFIMDSKHN FCFMEMNTRL QVEHPVTEMI TGTDLVEWQL
   361  RIAAGEKIPL SQEEITLQGH AFEARIYAED PSNNFMPVAG PLVHLSTPRA DPSTRIETGV
   421  RQGDEVSVHY DPMIAKLVVW AADRQAALTK LRYSLRQYNI VGLHTNIDFL LNLSGHPEFE
   481  AGNVHTDFIP QHHKQLLLSR KAAAKESLCQ AALGLILKEK AMTDTFTLQA HDQFSPFSSS
   541  SGRRLNISYT RNMTLKDGKN NVAIAVTYNH DGSYSMQIED KTFQVLGNLY SEGDCTYLKC
   601  SVNGVASKAK LIILENTIYL FSKEGSIEID IPVPKYLSSV SSQETQGGPL APMTGTIEKV
   661  FVKAGDKVKA GDSLMVMIAM KMEHTIKSPK DGTVKKVFYR EGAQANRHTP LVEFEEEESD
   721  KRESE

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against MCCC1 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)
0.28
Highest tissue expression
55 nTPM

Expression across tissuesHPA

Tissue

  • liver: 55 nTPM
  • kidney: 54 nTPM
  • adipose tissue: 35 nTPM
  • heart muscle: 32 nTPM
  • breast: 31 nTPM
  • pancreas: 29 nTPM

Single-cell type

  • alveolar cells type 2: 252 nCPM
  • renal collecting duct intercalated cells: 175 nCPM
  • adipocytes: 172 nCPM
  • urothelial cells: 165 nCPM
  • prostatic hillock cells: 149 nCPM
  • renal collecting duct principal cells: 141 nCPM

Immune cell

  • myeloid DC: 27 nTPM
  • NK-cell: 25 nTPM
  • eosinophil: 25 nTPM
  • memory B-cell: 17 nTPM
  • plasmacytoid DC: 17 nTPM
  • non-classical monocyte: 17 nTPM

Brain region

  • choroid plexus: 34 nTPM
  • white matter: 30 nTPM
  • cerebral cortex: 29 nTPM
  • hypothalamus: 27 nTPM
  • basal ganglia: 26 nTPM
  • pons: 26 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about MCCC1.

Disease | AllUniProt

Conditions MCCC1 is implicated in, by any mechanism.

Disease | GeneticClinVar

204 pathogenic / likely-pathogenic of 999 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)
0.9
gnomAD pLI
0
gnomAD missense Z
0.54
DepMap mean gene effect
-0.03
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 12% 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 MCCC1 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 MCCC1 as an antibody target. Whether an autoantibody or antibody against MCCC1 could matter depends on whether native MCCC1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

MCCC1 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 MCCC1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/MCCC1. 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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