Free for academic non-profit institutions. Other users need a Commercial license

Aliases for BTN2A1 Gene

Aliases for BTN2A1 Gene

  • Butyrophilin Subfamily 2 Member A1 2 3 5
  • Butyrophilin, Subfamily 2, Member A1 2 3
  • BT2.1 3 4
  • BTF1 3 4
  • BK14H9.1 3
  • DJ3E1.1 3
  • BTN2.1 3

External Ids for BTN2A1 Gene

Previous GeneCards Identifiers for BTN2A1 Gene

  • GC06P026515
  • GC06P026566
  • GC06P026458
  • GC06P026400

Summaries for BTN2A1 Gene

Entrez Gene Summary for BTN2A1 Gene

  • This gene encodes a member of the immunoglobulin superfamily. The gene is located in a cluster of butyrophilin-like genes in the juxta-telomeric region of the major histocompatibility complex on chromosome 6. A pseudogene of this gene has been identified in this cluster. The encoded protein is an integral plasma membrane protein involved in lipid, fatty-acid, and sterol metabolism. Alterations in this gene may be associated with several disease states including metabolic syndrome. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2013]

GeneCards Summary for BTN2A1 Gene

BTN2A1 (Butyrophilin Subfamily 2 Member A1) is a Protein Coding gene. An important paralog of this gene is BTNL8.

No data available for UniProtKB/Swiss-Prot , Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for BTN2A1 Gene

Genomics for BTN2A1 Gene

Regulatory Elements for BTN2A1 Gene

Enhancers for BTN2A1 Gene
GeneHancer Identifier Score Enhancer Sources TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Other Gene Targets for Enhancer

Enhancers around BTN2A1 on UCSC Golden Path with GeneCards custom track

Promoters for BTN2A1 Gene
Ensembl Regulatory Elements (ENSRs) TSS Distance (bp) Size (bp) Binding Sites for Transcription Factors within promoters

ENSRs around BTN2A1 on UCSC Golden Path with GeneCards custom track

Genomic Location for BTN2A1 Gene

26,457,904 bp from pter
26,476,621 bp from pter
18,718 bases
Plus strand

Genomic View for BTN2A1 Gene

Genes around BTN2A1 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
BTN2A1 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for BTN2A1 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for BTN2A1 Gene

Proteins for BTN2A1 Gene

  • Protein details for BTN2A1 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Butyrophilin subfamily 2 member A1
    Protein Accession:
    Secondary Accessions:
    • B4DLP9
    • E9PGR4
    • O00475
    • P78408
    • Q59EN4
    • Q7KYQ7
    • Q7Z386
    • Q96AV7
    • Q9NU62

    Protein attributes for BTN2A1 Gene

    527 amino acids
    Molecular mass:
    59633 Da
    Quaternary structure:
    No Data Available
    • Sequence=BAD93014.1; Type=Erroneous initiation; Note=Translation N-terminally shortened.; Evidence={ECO:0000305}; Sequence=CAB71221.2; Type=Erroneous gene model prediction; Evidence={ECO:0000305};

    Alternative splice isoforms for BTN2A1 Gene

neXtProt entry for BTN2A1 Gene

Proteomics data for BTN2A1 Gene at MOPED

Post-translational modifications for BTN2A1 Gene

  • Ubiquitination at Lys 280
  • Glycosylation at Asn 46, Asn 114, and Asn 120
  • Modification sites at PhosphoSitePlus

Antibody Products

  • Santa Cruz Biotechnology (SCBT) Antibodies for BTN2A1

No data available for DME Specific Peptides for BTN2A1 Gene

Domains & Families for BTN2A1 Gene

Graphical View of Domain Structure for InterPro Entry



  • Contains 1 B30.2/SPRY domain.
  • Belongs to the immunoglobulin superfamily. BTN/MOG family.
  • Contains 1 B30.2/SPRY domain.
  • Contains 1 Ig-like V-type (immunoglobulin-like) domain.
  • Belongs to the immunoglobulin superfamily. BTN/MOG family.
genes like me logo Genes that share domains with BTN2A1: view

Function for BTN2A1 Gene

Molecular function for BTN2A1 Gene

GENATLAS Biochemistry:
butyrophilin subfamily 2,member A1,B box family of proteins,involved in cell proliferation and development

Gene Ontology (GO) - Molecular Function for BTN2A1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0003674 molecular_function ND --
genes like me logo Genes that share ontologies with BTN2A1: view

Phenotypes for BTN2A1 Gene

GenomeRNAi human phenotypes for BTN2A1:
genes like me logo Genes that share phenotypes with BTN2A1: view

Animal Model Products

CRISPR Products

miRNA for BTN2A1 Gene

miRTarBase miRNAs that target BTN2A1

No data available for Enzyme Numbers (IUBMB) , Human Phenotype Ontology , Animal Models , Transcription Factor Targets and HOMER Transcription for BTN2A1 Gene

Localization for BTN2A1 Gene

Subcellular locations from UniProtKB/Swiss-Prot for BTN2A1 Gene

Membrane; Single-pass type I membrane protein.

Subcellular locations from

Jensen Localization Image for BTN2A1 Gene COMPARTMENTS Subcellular localization image for BTN2A1 gene
Compartment Confidence
extracellular 5
plasma membrane 5
endoplasmic reticulum 2

Gene Ontology (GO) - Cellular Components for BTN2A1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0070062 extracellular exosome IDA 23376485
genes like me logo Genes that share ontologies with BTN2A1: view

Pathways & Interactions for BTN2A1 Gene

SuperPathways for BTN2A1 Gene

No Data Available

Interacting Proteins for BTN2A1 Gene

Gene Ontology (GO) - Biological Process for BTN2A1 Gene


No data available for Pathways by source and SIGNOR curated interactions for BTN2A1 Gene

Drugs & Compounds for BTN2A1 Gene

No Compound Related Data Available

Transcripts for BTN2A1 Gene

Unigene Clusters for BTN2A1 Gene

Butyrophilin, subfamily 2, member A1:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for BTN2A1 Gene

ExUns: 1a · 1b ^ 2 ^ 3a · 3b · 3c ^ 4 ^ 5 ^ 6a · 6b
SP2: -
SP3: -

Relevant External Links for BTN2A1 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for BTN2A1 Gene

mRNA expression in normal human tissues for BTN2A1 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

Protein differential expression in normal tissues from HIPED for BTN2A1 Gene

This gene is overexpressed in Breast (46.3) and Cerebrospinal fluid (7.6).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, MOPED, and MaxQB for BTN2A1 Gene

SOURCE GeneReport for Unigene cluster for BTN2A1 Gene Hs.159028

mRNA Expression by UniProt/SwissProt for BTN2A1 Gene

Tissue specificity: Highly expressed in brain, bone marrow, small intestine, muscle, spleen and pancreas. Moderate expression was seen in lung, liver and kidney.
genes like me logo Genes that share expression patterns with BTN2A1: view

Protein tissue co-expression partners for BTN2A1 Gene

Primer Products

No data available for mRNA differential expression in normal tissues for BTN2A1 Gene

Orthologs for BTN2A1 Gene

This gene was present in the common ancestor of chordates.

Orthologs for BTN2A1 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia BTN2A1 35
  • 99.11 (n)
  • 98.86 (a)
-- 36
  • 37 (a)
(Bos Taurus)
Mammalia -- 36
  • 57 (a)
(Canis familiaris)
Mammalia -- 36
  • 70 (a)
(Monodelphis domestica)
Mammalia -- 36
  • 53 (a)
(Mus musculus)
Mammalia Btn2a2 36
  • 64 (a)
(Ornithorhynchus anatinus)
Mammalia -- 36
  • 40 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia LOC100485231 35
  • 48.92 (n)
  • 35.66 (a)
Species with no ortholog for BTN2A1:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rat (Rattus norvegicus)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)
  • zebrafish (Danio rerio)

Evolution for BTN2A1 Gene

Gene Tree for BTN2A1 (if available)
Gene Tree for BTN2A1 (if available)

Paralogs for BTN2A1 Gene

Paralogs for BTN2A1 Gene

(12) SIMAP similar genes for BTN2A1 Gene using alignment to 4 proteins: Pseudogenes for BTN2A1 Gene

genes like me logo Genes that share paralogs with BTN2A1: view

Variants for BTN2A1 Gene

Sequence variations from dbSNP and Humsavar for BTN2A1 Gene

SNP ID Clin Chr 06 pos Sequence Context AA Info Type
rs3734539 - 26,459,768(+) CCTAC(C/T)GCTGT reference, missense
rs13195509 - 26,463,432(+) CGGCT(A/G)TGATC reference, missense
rs3734542 - 26,468,098(+) AGGCC(A/G)GGAGA intron-variant, reference, missense, utr-variant-3-prime
rs3734543 - 26,468,317(+) GGTGG(C/G)CGTCT intron-variant, reference, missense, utr-variant-3-prime
rs13195402 - 26,463,347(+) GTGTG(G/T)AGGGA reference, missense

Structural Variations from Database of Genomic Variants (DGV) for BTN2A1 Gene

Variant ID Type Subtype PubMed ID
nsv528172 CNV Loss 19592680

Variation tolerance for BTN2A1 Gene

Residual Variation Intolerance Score: 92.1% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 6.29; 76.48% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for BTN2A1 Gene

Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for BTN2A1 Gene

Disorders for BTN2A1 Gene

Relevant External Links for BTN2A1

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:

No disorders were found for BTN2A1 Gene.

No data available for MalaCards , UniProtKB/Swiss-Prot and Genatlas for BTN2A1 Gene

Publications for BTN2A1 Gene

  1. Cloning, localization, and structure of new members of the butyrophilin gene family in the juxta-telomeric region of the major histocompatibility complex. (PMID: 9382921) Tazi-Ahnini R. … Pontarotti P. (Immunogenetics 1997) 2 3 4 67
  2. The B7 homolog butyrophilin BTN2A1 is a novel ligand for DC-SIGN. (PMID: 17785817) Malcherek G. … Trowsdale J. (J. Immunol. 2007) 3 23
  3. A 1.1-Mb transcript map of the hereditary hemochromatosis locus. (PMID: 9149941) Ruddy D.A. … Feder J.N. (Genome Res. 1997) 2 3
  4. The BioPlex Network: A Systematic Exploration of the Human Interactome. (PMID: 26186194) Huttlin E.L. … Gygi S.P. (Cell 2015) 3
  5. Association of a polymorphism of BTN2A1 with dyslipidemia in community-dwelling individuals. (PMID: 24452779) Horibe H. … Yamada Y. (Mol Med Rep 2014) 3

Products for BTN2A1 Gene

Sources for BTN2A1 Gene