Species

Homo sapiens

Symbol

LAMC2

Name

laminin subunit gamma 2

Synonyms

alternatively spliced laminin gamma2 chain
B2T

Biotype

protein coding gene

Automated Description

Predicted to enable heparin binding activity. Predicted to be an extracellular matrix structural constituent. Involved in positive regulation of cell migration and positive regulation of cell population proliferation. Located in collagen-containing extracellular matrix. Implicated in junctional epidermolysis bullosa and lung small cell carcinoma. Biomarker of lung non-small cell carcinoma and lung squamous cell carcinoma.

RGD Description

Laminins, a family of extracellular matrix glycoproteins, are the major noncollagenous constituent of basement membranes. They have been implicated in a wide variety of biological processes including cell adhesion, differentiation, migration, signaling, neurite outgrowth and metastasis. Laminins, composed of 3 non identical chains: laminin alpha, beta and gamma (formerly A, B1, and B2, respectively), have a cruciform structure consisting of 3 short arms, each formed by a different chain, and a long arm composed of all 3 chains. Each laminin chain is a multidomain protein encoded by a distinct gene. Several isoforms of each chain have been described. Different alpha, beta and gamma chain isomers combine to give rise to different heterotrimeric laminin isoforms which are designated by Arabic numerals in the order of their discovery, i.e. alpha1beta1gamma1 heterotrimer is laminin 1. The biological functions of the different chains and trimer molecules are largely unknown, but some of the chains have been shown to differ with respect to their tissue distribution, presumably reflecting diverse functions in vivo. This gene encodes the gamma chain isoform laminin, gamma 2. The gamma 2 chain, formerly thought to be a truncated version of beta chain (B2t), is highly homologous to the gamma 1 chain; however, it lacks domain VI, and domains V, IV and III are shorter. It is expressed in several fetal tissues but differently from gamma 1, and is specifically localized to epithelial cells in skin, lung and kidney. The gamma 2 chain together with alpha 3 and beta 3 chains constitute laminin 5 (earlier known as kalinin), which is an integral part of the anchoring filaments that connect epithelial cells to the underlying basement membrane. The epithelium-specific expression of the gamma 2 chain implied its role as an epithelium attachment molecule, and mutations in this gene have been associated with junctional epidermolysis bullosa, a skin disease characterized by blisters due to disruption of the epidermal-dermal junction. Two transcript variants resulting from alternative splicing of the 3' terminal exon, and encoding different isoforms of gamma 2 chain, have been described. The two variants are differentially expressed in embryonic tissues, however, the biological significance of the two forms is not known. Transcript variants utilizing alternative polyA_signal have also been noted in literature. [provided by RefSeq, Aug 2011]

Cross References

Additional Information

Literature

Orthology

Gene tree: PANTHER:PTHR10574

Links to orthology data in JBrowse by filter level: Stringent, Moderate, No filter, Best and Best Reverse

Paralogy

Function - GO Annotations

Show functions with at least one experimental evidence

Pathways

No data available

Phenotypes

Primary Sources

None

Other Sources

BioGRID CRISPR Screen Cell Line Phenotypes

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Disease Associations

Include negative annotationsCases where the expected disease association was NOT found

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Alleles and Variants

Allele/Variant Symbol	Allele Synonyms	Category	Variant	Variant type	Molecular consequence	Has Disease Annotations	Has Phenotype Annotations
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Transgenic Alleles

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Models

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Sequence Feature Viewer

Genome location

Chr1:183186238...183258968 + (72.73 kb)

Assembly version

GRCh38

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Data currently unavailable; sequence viewer under construction

Sequence Details

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Expression

Primary Sources

None

Other Sources

Cell color indicative of annotation volume; red slash indicates species lacks structure or developmental stage.

Molecular Interactions

LAMC2 molecule type	Interactor gene	Interactor species	Interactor molecule type	Detection methods	Source	Reference
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Genetic Interactions

LAMC2 role	LAMC2 genetic perturbation	Interactor gene	Interactor species	Interactor role	Interactor genetic perturbation	Interaction type	Phenotype or trait	Source	Reference
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