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 ALEQCLSEPLocalizationUniProt · 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.
- Neurodevelopmental disorder with infantile epileptic spasms (NEDIES) MIM:619373
Disease | GeneticClinVar
7 pathogenic / likely-pathogenic of 130 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Neurodevelopmental disorder with infantile epileptic spasms
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
- Autoimmune movement disorders with neuronal antibodies - an update.
2021 · Curr Opin Neurol · RCR 1.4 · 14 citations - Neurochondrin Antibody Serum Positivity in Three Cases of Autoimmune Cerebellar Ataxia.
2019 · Cerebellum · RCR 1.4 · 25 citations - Neurochondrin is a neuronal target antigen in autoimmune cerebellar degeneration.
2017 · Neurol Neuroimmunol Neuroinflamm · RCR 1.3 · 35 citations - Case Report: Alzheimer's Dementia Associated With Cerebrospinal Fluid Neurochondrin Autoantibodies.
2022 · Front Neurol · RCR 1 · 10 citations - Autoimmune Vestibulocerebellar Syndromes.
2020 · Semin Neurol · RCR 0.9 · 15 citations
Show 7 more
- Anti-neurochondrin antibody as a biomarker in primary autoimmune cerebellar ataxia-a case report and review of the literature.
2023 · Eur J Neurol · RCR 0.8 · 7 citations - Chorea Minor Associated with Anti-Neurochondrin Autoantibodies.
2017 · Neuropediatrics · RCR 0.7 · 13 citations - Recurrent Ataxia and Dystonia with Anti-Neurochondrin Autoantibodies.
2021 · Neuropediatrics · RCR 0.5 · 6 citations - Case report: Refractory focal motor seizure associated with cerebrospinal fluid neurochondrin antibody.
2024 · Front Immunol · RCR 0.3 · 1 citations - Encephalopathy Associated With Neurochondrin Autoantibodies.
2019 · J Child Neurol · RCR 0.3 · 5 citations - Corrigendum to Encephalopathy Associated With Neurochondrin Autoantibodies.
2020 · J Child Neurol - A case of autoimmune cerebellar ataxia associated with anti-neurochondroitin antibody.
2026 · Neurol Sci
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
- bone resorption
- neuron projection development
- regulation of neuronal synaptic plasticity
- regulation of postsynaptic neurotransmitter receptor internalization
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Armadillo-type fold
- Neurochondrin
- Neurochondrin
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.
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