Version: 8.0.0Date: Tue Jan 28 2025
Gene
IGHM
- Species
- Homo sapiens
- Symbol
- IGHM
- Name
- immunoglobulin heavy constant mu
- Synonyms
- AGM1
- MU
- Biotype
- gene
- Automated Description
- Contributes to several functions, including immunoglobulin receptor binding activity; peptidoglycan binding activity; and phosphatidylcholine binding activity. Involved in adaptive immune response; antibacterial humoral response; and innate immune response. Located in cell surface and extracellular space. Part of IgM B cell receptor complex; hexameric IgM immunoglobulin complex; and pentameric IgM immunoglobulin complex. Implicated in agammaglobulinemia 1.
- RGD Description
- Immunoglobulins (Ig) are the antigen recognition molecules of B cells. An Ig molecule is made up of 2 identical heavy chains and 2 identical light chains (see MIM 147200) joined by disulfide bonds so that each heavy chain is linked to a light chain and the 2 heavy chains are linked together. Each Ig heavy chain has an N-terminal variable (V) region containing the antigen-binding site and a C-terminal constant (C) region, encoded by an individual C region gene, that determines the isotype of the antibody and provides effector or signaling functions. The heavy chain V region is encoded by 1 each of 3 types of genes: V genes (see MIM 147070), joining (J) genes (see MIM 147010), and diversity (D) genes (see MIM 146910). The C region genes are clustered downstream of the V region genes within the heavy chain locus on chromosome 14. The IGHM gene encodes the C region of the mu heavy chain, which defines the IgM isotype. Naive B cells express the transmembrane forms of IgM and IgD (see IGHD; MIM 1471770) on their surface. During an antibody response, activated B cells can switch to the expression of individual downstream heavy chain C region genes by a process of somatic recombination known as isotype switching. In addition, secreted Ig forms that act as antibodies can be produced by alternative RNA processing of the heavy chain C region sequences. Although the membrane forms of all Ig isotypes are monomeric, secreted IgM forms pentamers, and occasionally hexamers, in plasma (summary by Janeway et al., 2005).[supplied by OMIM, Aug 2010]
- Cross References
- Additional Information
- Literature
Orthology
- Gene tree
- PANTHER:PTHR23266
Links to orthology data in JBrowse by filter level: Stringent, Moderate, No filter, Best and Best Reverse
Phenotypes
- Primary Sources
- None
- Other Sources
Phenotype Term | Annotation details | References |
|---|---|---|
| No records match query. Try removing filters. | ||
Showing 0 - 0 of 0 rows
per page
Disease Associations
Cases where the expected disease association was NOT found
Cell color indicative of annotation volume
No data available
Alleles and Variants
Allele/Variant Symbol | Allele Synonyms | Category | Variant | Variant type | Molecular consequence | Has Disease Annotations | Has Phenotype Annotations |
|---|---|---|---|---|---|---|---|
| No records match query. Try removing filters. | |||||||
Showing 0 - 0 of 0 rows
per page
Transgenic Alleles
Species (carrying the transgene) | Allele symbol | Transgenic construct | Expressed components | Knock-down targets | Regulatory regions | Has Disease Annotations | Has Phenotype Annotations |
|---|---|---|---|---|---|---|---|
| No records match query. Try removing filters. | |||||||
Showing 0 - 0 of 0 rows
per page
Models
Model name | Experimental condition | Associated Human Diseases | Associated Phenotypes | Modifier | Source |
|---|---|---|---|---|---|
| No records match query. Try removing filters. | |||||
Showing 0 - 0 of 0 rows
per page
Sequence Feature Viewer
- Genome location
- Chr14:105851705...105856218 - (4.51 kb)
- Assembly version
- GRCh38
- Viewer Help
Data currently unavailable; sequence viewer under construction
Expression
- Primary Sources
- None
- Other Sources
Cell color indicative of annotation volume; red slash indicates species lacks structure or developmental stage.