Seroatlas · Human Serome Atlas

BICD2

Protein bicaudal D homolog 2

Also known as: BICD2_HUMAN, KIAA0699

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

Protein identityUniProt · HPA

UniProt accession
Q8TD16
Gene
BICD2
Ensembl
ENSG00000185963
Chromosome
9
Canonical length
824 aa
Protein class
Disease related genes, Human disease related genes, Predicted intracellular proteins
Subcellular location
Golgi apparatus,Plasma membrane,Cytosol

OverviewNCBI Gene

This gene is one of two human homologs of Drosophila bicaudal-D and a member of the Bicoid family. It has been implicated in dynein-mediated, minus end-directed motility along microtubules. It has also been reported to be a phosphorylation target of NIMA related kinase 8. Two alternative splice variants have been described. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

824 residues, UniProt reviewed canonical sequence.

>Q8TD16|BICD2
     1  MSAPSEEEEY ARLVMEAQPE WLRAEVKRLS HELAETTREK IQAAEYGLAV LEEKHQLKLQ
    61  FEELEVDYEA IRSEMEQLKE AFGQAHTNHK KVAADGESRE ESLIQESASK EQYYVRKVLE
   121  LQTELKQLRN VLTNTQSENE RLASVAQELK EINQNVEIQR GRLRDDIKEY KFREARLLQD
   181  YSELEEENIS LQKQVSVLRQ NQVEFEGLKH EIKRLEEETE YLNSQLEDAI RLKEISERQL
   241  EEALETLKTE REQKNSLRKE LSHYMSINDS FYTSHLHVSL DGLKFSDDAA EPNNDAEALV
   301  NGFEHGGLAK LPLDNKTSTP KKEGLAPPSP SLVSDLLSEL NISEIQKLKQ QLMQMEREKA
   361  GLLATLQDTQ KQLEHTRGSL SEQQEKVTRL TENLSALRRL QASKERQTAL DNEKDRDSHE
   421  DGDYYEVDIN GPEILACKYH VAVAEAGELR EQLKALRSTH EAREAQHAEE KGRYEAEGQA
   481  LTEKVSLLEK ASRQDRELLA RLEKELKKVS DVAGETQGSL SVAQDELVTF SEELANLYHH
   541  VCMCNNETPN RVMLDYYREG QGGAGRTSPG GRTSPEARGR RSPILLPKGL LAPEAGRADG
   601  GTGDSSPSPG SSLPSPLSDP RREPMNIYNL IAIIRDQIKH LQAAVDRTTE LSRQRIASQE
   661  LGPAVDKDKE ALMEEILKLK SLLSTKREQI TTLRTVLKAN KQTAEVALAN LKSKYENEKA
   721  MVTETMMKLR NELKALKEDA ATFSSLRAMF ATRCDEYITQ LDEMQRQLAA AEDEKKTLNS
   781  LLRMAIQQKL ALTQRLELLE LDHEQTRRGR AKAAPKTKPA TPSL

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against BICD2 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)
0.52
Highest tissue expression
61 nTPM

Expression across tissuesHPA

Tissue

  • skin: 61 nTPM
  • esophagus: 45 nTPM
  • vagina: 30 nTPM
  • cervix: 26 nTPM
  • skeletal muscle: 21 nTPM
  • blood vessel: 19 nTPM

Single-cell type

  • suprabasal keratinocytes: 181 nCPM
  • platelets: 178 nCPM
  • neutrophils: 168 nCPM
  • basal keratinocytes: 143 nCPM
  • esophageal apical cells: 125 nCPM
  • esophageal suprabasal cells: 114 nCPM

Immune cell

  • neutrophil: 7.5 nTPM
  • non-classical monocyte: 6 nTPM
  • eosinophil: 4.4 nTPM
  • myeloid DC: 3.8 nTPM
  • intermediate monocyte: 3.6 nTPM
  • classical monocyte: 3.4 nTPM

Brain region

  • white matter: 25 nTPM
  • amygdala: 24 nTPM
  • hippocampal formation: 24 nTPM
  • medulla oblongata: 23 nTPM
  • cerebellum: 23 nTPM
  • spinal cord: 23 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about BICD2.

Disease | AllUniProt

Conditions BICD2 is implicated in, by any mechanism.

Disease | GeneticClinVar

38 pathogenic / likely-pathogenic of 960 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

Disease | ImmuneIEDB

Conditions an epitope on BICD2 was assayed in.

ReferencesPubMed · IEDB

Publications for BICD2 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.

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. IEDB — curated epitope assays from the Immune Epitope Database (Vita et al., Nucleic Acids Research 2019). 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)
0.31
gnomAD pLI
0.98
gnomAD missense Z
2.21
DepMap mean gene effect
-0.1
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% 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 BICD2 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 BICD2 as an antibody target. Whether an autoantibody or antibody against BICD2 could matter depends on whether native BICD2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

BICD2 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 BICD2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/BICD2. 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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