Homo sapiens Gene: LAMB2 | |||||||||||||||||||||||||||||
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Summary | |||||||||||||||||||||||||||||
InnateDB Gene | IDBG-34423.6 | ||||||||||||||||||||||||||||
Last Modified | 2014-10-13 [Report errors or provide feedback] | ||||||||||||||||||||||||||||
Gene Symbol | LAMB2 | ||||||||||||||||||||||||||||
Gene Name | laminin, beta 2 (laminin S) | ||||||||||||||||||||||||||||
Synonyms | LAMS; NPHS5 | ||||||||||||||||||||||||||||
Species | Homo sapiens | ||||||||||||||||||||||||||||
Ensembl Gene | ENSG00000172037 | ||||||||||||||||||||||||||||
Encoded Proteins |
laminin, beta 2 (laminin S)
laminin, beta 2 (laminin S)
laminin, beta 2 (laminin S)
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Protein Structure | |||||||||||||||||||||||||||||
Useful resources | Stemformatics EHFPI ImmGen | ||||||||||||||||||||||||||||
Entrez Gene | |||||||||||||||||||||||||||||
Summary |
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), form 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 beta chain isoform laminin, beta 2. The beta 2 chain contains the 7 structural domains typical of beta chains of laminin, including the short alpha region. However, unlike beta 1 chain, beta 2 has a more restricted tissue distribution. It is enriched in the basement membrane of muscles at the neuromuscular junctions, kidney glomerulus and vascular smooth muscle. Transgenic mice in which the beta 2 chain gene was inactivated by homologous recombination, showed defects in the maturation of neuromuscular junctions and impairment of glomerular filtration. Alternative splicing involving a non consensus 5' splice site (gc) in the 5' UTR of this gene has been reported. It was suggested that inefficient splicing of this first intron, which does not change the protein sequence, results in a greater abundance of the unspliced form of the transcript than the spliced form. The full-length nature of the spliced transcript is not known. [provided by RefSeq, Aug 2011] 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), form 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 beta chain isoform laminin, beta 2. The beta 2 chain contains the 7 structural domains typical of beta chains of laminin, including the short alpha region. However, unlike beta 1 chain, beta 2 has a more restricted tissue distribution. It is enriched in the basement membrane of muscles at the neuromuscular junctions, kidney glomerulus and vascular smooth muscle. Transgenic mice in which the beta 2 chain gene was inactivated by homologous recombination, showed defects in the maturation of neuromuscular junctions and impairment of glomerular filtration. Alternative splicing involving a non consensus 5\' splice site (gc) in the 5\' UTR of this gene has been reported. It was suggested that inefficient splicing of this first intron, which does not change the protein sequence, results in a greater abundance of the unspliced form of the transcript than the spliced form. The full-length nature of the spliced transcript is not known. [provided by RefSeq, Aug 2011] |
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Gene Information | |||||||||||||||||||||||||||||
Type | Protein coding | ||||||||||||||||||||||||||||
Genomic Location | Chromosome 3:49121114-49133118 | ||||||||||||||||||||||||||||
Strand | Reverse strand | ||||||||||||||||||||||||||||
Band | p21.31 | ||||||||||||||||||||||||||||
Transcripts | |||||||||||||||||||||||||||||
Interactions | |||||||||||||||||||||||||||||
Number of Interactions |
This gene and/or its encoded proteins are associated with 13 experimentally validated interaction(s) in this database.
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Gene Ontology | |||||||||||||||||||||||||||||
Molecular Function |
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Biological Process |
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Cellular Component |
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Orthologs | |||||||||||||||||||||||||||||
Species
Mus musculus
Bos taurus
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Gene ID
Gene Order
Not yet available
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Pathways | |||||||||||||||||||||||||||||
NETPATH |
Alpha6Beta4Integrin pathway
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REACTOME |
Extracellular matrix organization pathway
ECM proteoglycans pathway
Non-integrin membrane-ECM interactions pathway
Laminin interactions pathway
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KEGG |
ECM-receptor interaction pathway
Small cell lung cancer pathway
Focal adhesion pathway
Pathways in cancer pathway
Amoebiasis pathway
Toxoplasmosis pathway
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INOH | |||||||||||||||||||||||||||||
PID NCI |
Beta1 integrin cell surface interactions
Alpha6 beta4 integrin-ligand interactions
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Cross-References | |||||||||||||||||||||||||||||
SwissProt | |||||||||||||||||||||||||||||
TrEMBL | |||||||||||||||||||||||||||||
UniProt Splice Variant | |||||||||||||||||||||||||||||
Entrez Gene | |||||||||||||||||||||||||||||
UniGene | Hs.439726 | ||||||||||||||||||||||||||||
RefSeq | NM_002292 XM_005265127 | ||||||||||||||||||||||||||||
HUGO | |||||||||||||||||||||||||||||
OMIM | |||||||||||||||||||||||||||||
CCDS | CCDS2789 | ||||||||||||||||||||||||||||
HPRD | 01034 | ||||||||||||||||||||||||||||
IMGT | |||||||||||||||||||||||||||||
EMBL | |||||||||||||||||||||||||||||
GenPept | |||||||||||||||||||||||||||||
RNA Seq Atlas | |||||||||||||||||||||||||||||