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Gene Ontology Classifications
Symbol
Name
ID
Lamc1
laminin, gamma 1
MGI:99914

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Summary from NCBI RefSeq

[Summary is not available for the mouse gene. This summary is for the human ortholog.] 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 1. The gamma 1 chain, formerly thought to be a beta chain, contains structural domains similar to beta chains, however, lacks the short alpha region separating domains I and II. The structural organization of this gene also suggested that it had diverged considerably from the beta chain genes. Embryos of transgenic mice in which both alleles of the gamma 1 chain gene were inactivated by homologous recombination, lacked basement membranes, indicating that laminin, gamma 1 chain is necessary for laminin heterotrimer assembly. It has been inferred by analogy with the strikingly similar 3' UTR sequence in mouse laminin gamma 1 cDNA, that multiple polyadenylation sites are utilized in human to generate the 2 different sized mRNAs (5.5 and 7.5 kb) seen on Northern analysis. [provided by RefSeq, Aug 2011]



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Gene Ontology Evidence Code Abbreviations:

Experimental:
EXP
Inferred from experiment
IDA
Inferred from direct assay
IEP
Inferred from expression pattern
IGI
Inferred from genetic interaction
IMP
Inferred from mutant phenotype
IPI
Inferred from physical interaction
Homology:
IAS
Inferred from ancestral sequence
IBA
Inferred from biological aspect of ancestor
IBD
Inferred from biological aspect of descendant
IKR
Inferred from key residues
IMR
Inferred from missing residues
IRD
Inferred from rapid divergence
ISA
Inferred from sequence alignment
ISM
Inferred from sequence model
ISO
Inferred from sequence orthology
ISS
Inferred from sequence or structural similarity
Automated:
IEA
Inferred from electronic annotation
RCA
Reviewed computational analysis
Other:
IC
Inferred by curator
NAS
Non-traceable author statement
ND
No biological data available
TAS
Traceable author statement

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Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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last database update
04/26/2016
MGI 6.03
The Jackson Laboratory