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Aliases for MS4A1 Gene

Aliases for MS4A1 Gene

  • Membrane Spanning 4-Domains A1 2 3
  • Membrane-Spanning 4-Domains, Subfamily A, Member 1 2 3 5
  • Membrane-Spanning 4-Domains Subfamily A Member 1 3 4
  • Leukocyte Surface Antigen Leu-16 3 4
  • CD20 Antigen 3 4
  • CD20 3 4
  • Bp35 3 4
  • B-Lymphocyte Cell-Surface Antigen B1 3
  • B-Lymphocyte Surface Antigen B1 4
  • CD20 Receptor 3
  • LEU-16 3
  • CVID5 3
  • MS4A2 3
  • B1 3
  • S7 3

External Ids for MS4A1 Gene

Previous HGNC Symbols for MS4A1 Gene

  • CD20

Previous GeneCards Identifiers for MS4A1 Gene

  • GC11P062617
  • GC11P061736
  • GC11P059998
  • GC11P059979
  • GC11P060225
  • GC11P056570

Summaries for MS4A1 Gene

Entrez Gene Summary for MS4A1 Gene

  • This gene encodes a member of the membrane-spanning 4A gene family. Members of this nascent protein family are characterized by common structural features and similar intron/exon splice boundaries and display unique expression patterns among hematopoietic cells and nonlymphoid tissues. This gene encodes a B-lymphocyte surface molecule which plays a role in the development and differentiation of B-cells into plasma cells. This family member is localized to 11q12, among a cluster of family members. Alternative splicing of this gene results in two transcript variants which encode the same protein. [provided by RefSeq, Jul 2008]

GeneCards Summary for MS4A1 Gene

MS4A1 (Membrane Spanning 4-Domains A1) is a Protein Coding gene. Diseases associated with MS4A1 include Immunodeficiency, Common Variable, 5 and Common Variable Immunodeficiency. Among its related pathways are Dendritic Cells Developmental Lineage Pathway and Hematopoietic cell lineage. GO annotations related to this gene include epidermal growth factor receptor binding and MHC class II protein complex binding.

UniProtKB/Swiss-Prot for MS4A1 Gene

  • This protein may be involved in the regulation of B-cell activation and proliferation.

Gene Wiki entry for MS4A1 Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for MS4A1 Gene

Genomics for MS4A1 Gene

Regulatory Elements for MS4A1 Gene

Enhancers for MS4A1 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 MS4A1 on UCSC Golden Path with GeneCards custom track

Promoters for MS4A1 Gene
Ensembl Regulatory Elements (ENSRs) TSS Distance (bp) Size (bp) Binding Sites for Transcription Factors within promoters

ENSRs around MS4A1 on UCSC Golden Path with GeneCards custom track

Genomic Location for MS4A1 Gene

60,455,752 bp from pter
60,470,760 bp from pter
15,009 bases
Plus strand

Genomic View for MS4A1 Gene

Genes around MS4A1 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
MS4A1 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for MS4A1 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for MS4A1 Gene

Proteins for MS4A1 Gene

  • Protein details for MS4A1 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    B-lymphocyte antigen CD20
    Protein Accession:
    Secondary Accessions:
    • A6NMS4
    • B4DT24
    • P08984
    • Q13963

    Protein attributes for MS4A1 Gene

    297 amino acids
    Molecular mass:
    33077 Da
    Quaternary structure:
    No Data Available

    Three dimensional structures from OCA and Proteopedia for MS4A1 Gene

    Alternative splice isoforms for MS4A1 Gene


neXtProt entry for MS4A1 Gene

Proteomics data for MS4A1 Gene at MOPED

Post-translational modifications for MS4A1 Gene

  • Phosphorylated. Might be functionally regulated by protein kinase(s).
  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

No data available for DME Specific Peptides for MS4A1 Gene

Domains & Families for MS4A1 Gene

Gene Families for MS4A1 Gene

Protein Domains for MS4A1 Gene

Suggested Antigen Peptide Sequences for MS4A1 Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the MS4A family.
  • Belongs to the MS4A family.
genes like me logo Genes that share domains with MS4A1: view

Function for MS4A1 Gene

Molecular function for MS4A1 Gene

GENATLAS Biochemistry:
membrane-spanning 4-domains,subfamily A,member 1,expressed in most cells,complexing with an alpha chain and a homodimeric gamma subunit
UniProtKB/Swiss-Prot Function:
This protein may be involved in the regulation of B-cell activation and proliferation.

Gene Ontology (GO) - Molecular Function for MS4A1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005515 protein binding IPI 25416956
GO:0023026 MHC class II protein complex binding IDA 20458337
genes like me logo Genes that share ontologies with MS4A1: view
genes like me logo Genes that share phenotypes with MS4A1: view

Human Phenotype Ontology for MS4A1 Gene

HPO Id HPO Name Alternative Ids Definition Synonyms

Animal Models for MS4A1 Gene

MGI Knock Outs for MS4A1:

Animal Model Products

CRISPR Products

No data available for Enzyme Numbers (IUBMB) , Transcription Factor Targets and HOMER Transcription for MS4A1 Gene

Localization for MS4A1 Gene

Subcellular locations from UniProtKB/Swiss-Prot for MS4A1 Gene

Cell membrane; Multi-pass membrane protein. Cell membrane; Lipid-anchor.

Subcellular locations from

Jensen Localization Image for MS4A1 Gene COMPARTMENTS Subcellular localization image for MS4A1 gene
Compartment Confidence
extracellular 5
plasma membrane 5

Gene Ontology (GO) - Cellular Components for MS4A1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005887 integral component of plasma membrane NAS 2448768
GO:0009897 external side of plasma membrane IEA --
GO:0016021 integral component of membrane IEA --
genes like me logo Genes that share ontologies with MS4A1: view

Pathways & Interactions for MS4A1 Gene

genes like me logo Genes that share pathways with MS4A1: view

Gene Ontology (GO) - Biological Process for MS4A1 Gene


No data available for SIGNOR curated interactions for MS4A1 Gene

Drugs & Compounds for MS4A1 Gene

(19) Drugs for MS4A1 Gene - From: DrugBank, PharmGKB, DGIdb, FDA Approved Drugs, and Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
rituximab Approved Pharma antibody, Target Therapeutic Antibodies 1593
Ibritumomab Approved Pharma antibody, Target 0
Tositumomab Approved Pharma antibody, Target 0
Obinutuzumab Approved Pharma Target, antibody 76
Bexxar Approved June 2003 Pharma 0

(3) Additional Compounds for MS4A1 Gene - From: Novoseek

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
genes like me logo Genes that share compounds with MS4A1: view

Transcripts for MS4A1 Gene

Unigene Clusters for MS4A1 Gene

Membrane-spanning 4-domains, subfamily A, member 1:
Representative Sequences:

CRISPR Products

Inhibitory RNA Products

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for MS4A1 Gene

ExUns: 1a · 1b · 1c · 1d ^ 2 ^ 3 ^ 4a · 4b ^ 5a · 5b ^ 6a · 6b · 6c ^ 7a · 7b ^ 8a · 8b ^ 9a · 9b · 9c · 9d ^ 10 ^ 11a · 11b
SP1: - - - - - - - -
SP2: - -
SP3: - - - -
SP4: - - - - - - - -
SP5: - - - - - -
SP7: -
SP8: - - - -
SP9: - -
SP10: - - - -
SP12: - -

Relevant External Links for MS4A1 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for MS4A1 Gene

mRNA expression in normal human tissues for MS4A1 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for MS4A1 Gene

This gene is overexpressed in Spleen (x12.5) and Small Intestine - Terminal Ileum (x5.5).

Protein differential expression in normal tissues from HIPED for MS4A1 Gene

This gene is overexpressed in Blymphocyte (27.9), Lymph node (27.9), Monocytes (6.7), and Peripheral blood mononuclear cells (6.2).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, and MOPED for MS4A1 Gene

SOURCE GeneReport for Unigene cluster for MS4A1 Gene Hs.712553

mRNA Expression by UniProt/SwissProt for MS4A1 Gene

Tissue specificity: Expressed on B-cells.
genes like me logo Genes that share expression patterns with MS4A1: view

Protein tissue co-expression partners for MS4A1 Gene

- Elite partner

Primer Products

Orthologs for MS4A1 Gene

This gene was present in the common ancestor of mammals.

Orthologs for MS4A1 Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia MS4A1 35
  • 78.9 (n)
  • 71.04 (a)
MS4A1 36
  • 67 (a)
(Canis familiaris)
Mammalia MS4A1 35
  • 84.01 (n)
  • 73.99 (a)
MS4A1 36
  • 73 (a)
(Mus musculus)
Mammalia Ms4a1 35
  • 82.87 (n)
  • 74.83 (a)
Ms4a1 16
Ms4a1 36
  • 75 (a)
(Pan troglodytes)
Mammalia MS4A1 35
  • 99.21 (n)
  • 98.99 (a)
MS4A1 36
  • 99 (a)
(Rattus norvegicus)
Mammalia Ms4a1 35
  • 83.11 (n)
  • 76.69 (a)
(Monodelphis domestica)
Mammalia MS4A1 36
  • 51 (a)
(Ornithorhynchus anatinus)
Mammalia MS4A1 36
  • 53 (a)
Species with no ortholog for MS4A1:
  • 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)
  • 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)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)
  • zebrafish (Danio rerio)

Evolution for MS4A1 Gene

Gene Tree for MS4A1 (if available)
Gene Tree for MS4A1 (if available)

Paralogs for MS4A1 Gene

(2) SIMAP similar genes for MS4A1 Gene using alignment to 4 proteins:

genes like me logo Genes that share paralogs with MS4A1: view

No data available for Paralogs for MS4A1 Gene

Variants for MS4A1 Gene

Sequence variations from dbSNP and Humsavar for MS4A1 Gene

SNP ID Clin Chr 11 pos Sequence Context AA Info Type
rs948312 -- 60,460,772(-) taata(A/C/T)ggccc intron-variant
rs1051461 -- 60,469,761(+) TGCCC(C/T)ACTTT utr-variant-3-prime
rs1051593 -- 60,470,518(+) CCTTA(C/T)AATAG utr-variant-3-prime
rs1051594 -- 60,470,581(+) CTCCC(C/T)GATTA utr-variant-3-prime
rs1051756 -- 60,468,799(-) GGTTG(C/T)TGATG utr-variant-3-prime

Structural Variations from Database of Genomic Variants (DGV) for MS4A1 Gene

Variant ID Type Subtype PubMed ID
esv2744569 CNV Deletion 23290073
nsv508635 CNV Loss 20534489
esv4679 CNV Deletion 18987735
esv2661434 CNV Deletion 23128226
esv2744572 CNV Deletion 23290073
nsv471730 CNV Loss 16327809
esv28830 CNV Loss 19812545

Variation tolerance for MS4A1 Gene

Residual Variation Intolerance Score: 56.6% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 0.93; 19.20% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for MS4A1 Gene

Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for MS4A1 Gene

Disorders for MS4A1 Gene

MalaCards: The human disease database

(18) MalaCards diseases for MS4A1 Gene - From: OMIM, ClinVar, Orphanet, DISEASES, Novoseek, and GeneCards

Disorder Aliases PubMed IDs
immunodeficiency, common variable, 5
  • antibody deficiency due to cd20 defect
common variable immunodeficiency
  • acquired agammaglobulinemia
peripheral t-cell lymphoma
  • lymphoma t-cell peripheral
chronic lymphocytic leukemia
  • cll
b cell prolymphocytic leukemia
  • leukemia, b cell prolymphocytic
- elite association - COSMIC cancer census association via MalaCards
Search MS4A1 in MalaCards View complete list of genes associated with diseases


  • Immunodeficiency, common variable, 5 (CVID5) [MIM:613495]: A primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. The defect results from a failure of B-cell differentiation and impaired secretion of immunoglobulins; the numbers of circulating B-cells is usually in the normal range, but can be low. {ECO:0000269 PubMed:20038800}. Note=The disease is caused by mutations affecting the gene represented in this entry.

Relevant External Links for MS4A1

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with MS4A1: view

No data available for Genatlas for MS4A1 Gene

Publications for MS4A1 Gene

  1. Isolation and structure of a cDNA encoding the B1 (CD20) cell-surface antigen of human B lymphocytes. (PMID: 2448768) Tedder T.F. … Saito H. (Proc. Natl. Acad. Sci. U.S.A. 1988) 2 3 4 67
  2. CD20 deficiency in humans results in impaired T cell-independent antibody responses. (PMID: 20038800) Kuijpers T.W. … van Lier R.A.W. (J. Clin. Invest. 2010) 3 23
  3. Mutation or polymorphism of the CD20 gene is not associated with the response to R-CHOP in diffuse large B cell lymphoma patients. (PMID: 19054557) Sar A. … Demetrick D.J. (Leuk. Res. 2009) 3 23
  4. CD20 mutations involving the rituximab epitope are rare in diffuse large B-cell lymphomas and are not a significant cause of R-CHOP failure. (PMID: 19211644) Johnson N.A. … Gascoyne R.D. (Haematologica 2009) 3 23
  5. Down-regulation of CD20 expression in B-cell lymphoma cells after treatment with rituximab-containing combination chemotherapies: its prevalence and clinical significance. (PMID: 19246561) Hiraga J. … Naoe T. (Blood 2009) 3 23

Products for MS4A1 Gene

Sources for MS4A1 Gene