Seroatlas · Human Serome Atlas

CCNQ

Cyclin-Q

Also known as: CCNQ_HUMAN, CycM, FAM58A

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

Protein identityUniProt · HPA

UniProt accession
Q8N1B3
Gene
CCNQ
Ensembl
ENSG00000262919
Chromosome
X
Canonical length
248 aa
Protein class
Disease related genes, Human disease related genes, Predicted intracellular proteins
Subcellular location
Nucleoplasm,Cytosol

OverviewNCBI Gene

Mutations in this gene have been shown to cause an X-linked dominant STAR syndrome that typically manifests syndactyly, telecanthus and anogenital and renal malformations. The protein encoded by this gene contains a cyclin-box-fold domain which suggests it may have a role in controlling nuclear cell division cycles. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Oct 2008]

Canonical amino-acid sequenceUniProt

248 residues, UniProt reviewed canonical sequence.

>Q8N1B3|CCNQ
     1  MEAPEGGGGG PAARGPEGQP APEARVHFRV ARFIMEAGVK LGMRSIPIAT ACTIYHKFFC
    61  ETNLDAYDPY LIAMSSIYLA GKVEEQHLRT RDIINVSNRY FNPSGEPLEL DSRFWELRDS
   121  IVQCELLMLR VLRFQVSFQH PHKYLLHYLV SLQNWLNRHS WQRTPVAVTA WALLRDSYHG
   181  ALCLRFQAQH IAVAVLYLAL QVYGVEVPAE VEAEKPWWQV FNDDLTKPII DNIVSDLIQI
   241  YTMDTEIP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against CCNQ 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)
0.31
Highest tissue expression
35 nTPM

Expression across tissuesHPA

Tissue

  • heart muscle: 35 nTPM
  • skeletal muscle: 35 nTPM
  • cerebral cortex: 30 nTPM
  • hippocampal formation: 28 nTPM
  • spinal cord: 27 nTPM
  • amygdala: 26 nTPM

Single-cell type

  • syncytiotrophoblasts: 129 nCPM
  • extravillous trophoblasts: 128 nCPM
  • esophageal basal cells: 53 nCPM
  • migrating cytotrophoblasts: 52 nCPM
  • hofbauer cells: 51 nCPM
  • cytotrophoblasts: 50 nCPM

Immune cell

  • memory B-cell: 6.1 nTPM
  • eosinophil: 4.9 nTPM
  • naive B-cell: 4.1 nTPM
  • T-reg: 3.4 nTPM
  • gdT-cell: 2.7 nTPM
  • naive CD4 T-cell: 2.5 nTPM

Brain region

  • white matter: 28 nTPM
  • pons: 25 nTPM
  • medulla oblongata: 25 nTPM
  • cerebral cortex: 23 nTPM
  • midbrain: 22 nTPM
  • thalamus: 21 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about CCNQ.

Disease | AllUniProt

Conditions CCNQ is implicated in, by any mechanism.

Disease | GeneticClinVar

8 pathogenic / likely-pathogenic of 103 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)
0.4
gnomAD pLI
0.9

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 7% 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 CCNQ 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 CCNQ as an antibody target. Whether an autoantibody or antibody against CCNQ could matter depends on whether native CCNQ is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

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

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