Seroatlas · Human Serome Atlas

NCDN

Neurochondrin

Also known as: NCDN_HUMAN, NCDN-1, NCDN-2

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

Protein identityUniProt · HPA

UniProt accession
Q9UBB6
Gene
NCDN
Ensembl
ENSG00000020129
Chromosome
1
Canonical length
729 aa
Protein class
Disease related genes, Human disease related genes, Predicted intracellular proteins
Subcellular location
Cytosol

OverviewNCBI Gene

This gene encodes a leucine-rich cytoplasmic protein, which is highly similar to a mouse protein that negatively regulates Ca/calmodulin-dependent protein kinase II phosphorylation and may be essential for spatial learning processes. Several alternatively spliced transcript variants of this gene have been described. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

729 residues, UniProt reviewed canonical sequence.

>Q9UBB6|NCDN
     1  MSCCDLAAAG QLGKASIMAS DCEPALNQAE GRNPTLERYL GALREAKNDS EQFAALLLVT
    61  KAVKAGDIDA KTRRRIFDAV GFTFPNRLLT TKEAPDGCPD HVLRALGVAL LACFCSDPEL
   121  AAHPQVLNKI PILSTFLTAR GDPDDAARRS MIDDTYQCLT AVAGTPRGPR HLIAGGTVSA
   181  LCQAYLGHGY GFDQALALLV GLLAAAETQC WKEAEPDLLA VLRGLSEDFQ KAEDASKFEL
   241  CQLLPLFLPP TTVPPECYRD LQAGLARILG SKLSSWQRNP ALKLAARLAH ACGSDWIPAG
   301  SSGSKFLALL VNLACVEVRL ALEETGTEVK EDVVTACYAL MELGIQECTR CEQSLLKEPQ
   361  KVQLVSVMKE AIGAVIHYLL QVGSEKQKEP FVFASVRILG AWLAEETSSL RKEVCQLLPF
   421  LVRYAKTLYE EAEEANDLSQ QVANLAISPT TPGPTWPGDA LRLLLPGWCH LTVEDGPREI
   481  LIKEGAPSLL CKYFLQQWEL TSPGHDTSVL PDSVEIGLQT CCHIFLNLVV TAPGLIKRDA
   541  CFTSLMNTLM TSLPALVQQQ GRLLLAANVA TLGLLMARLL STSPALQGTP ASRGFFAAAI
   601  LFLSQSHVAR ATPGSDQAVL ALSPEYEGIW ADLQELWFLG MQAFTGCVPL LPWLAPAALR
   661  SRWPQELLQL LGSVSPNSVK PEMVAAYQGV LVELARANRL CREAMRLQAG EETASHYRMA
   721  ALEQCLSEP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against NCDN 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
Other membrane
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.28
Highest tissue expression
913 nTPM

Expression across tissuesHPA

Tissue

  • basal ganglia: 913 nTPM
  • cerebral cortex: 377 nTPM
  • hippocampal formation: 314 nTPM
  • amygdala: 210 nTPM
  • cerebellum: 191 nTPM
  • hypothalamus: 163 nTPM

Single-cell type

  • brain inhibitory neurons: 89 nCPM
  • brain excitatory neurons: 64 nCPM
  • other brain neurons: 56 nCPM
  • adrenal medulla cells: 32 nCPM
  • oligodendrocytes: 19 nCPM
  • astrocytes: 16 nCPM

Immune cell

  • total PBMC: 3.8 nTPM
  • memory B-cell: 3.7 nTPM
  • naive CD4 T-cell: 3.3 nTPM
  • naive CD8 T-cell: 2.9 nTPM
  • classical monocyte: 2.6 nTPM
  • non-classical monocyte: 2.6 nTPM

Brain region

  • basal ganglia: 982 nTPM
  • hippocampal formation: 850 nTPM
  • cerebral cortex: 834 nTPM
  • thalamus: 553 nTPM
  • amygdala: 501 nTPM
  • white matter: 478 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about NCDN.

Disease | AllUniProt

Conditions NCDN is implicated in, by any mechanism.

Disease | GeneticClinVar

7 pathogenic / likely-pathogenic of 130 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

Disease | AutoantibodyPubMed

Conditions in which antibodies against NCDN are reported. Each links to that disease's full target list.

ReferencesPubMed · IEDB

Publications for NCDN from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.

Reference: AutoantibodyPubMed

12 publications

Show 7 more

Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.

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)
0.18
gnomAD pLI
1
gnomAD missense Z
3.76
DepMap mean gene effect
-0.18
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

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

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

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

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