RGD Reference Report - The axonal glycoprotein TAG-1 is an immunoglobulin superfamily member with neurite outgrowth-promoting activity. - Rat Genome Database

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The axonal glycoprotein TAG-1 is an immunoglobulin superfamily member with neurite outgrowth-promoting activity.

Authors: Furley, AJ  Morton, SB  Manalo, D  Karagogeos, D  Dodd, J  Jessell, TM 
Citation: Furley AJ, etal., Cell 1990 Apr 6;61(1):157-70.
RGD ID: 727707
Pubmed: PMID:2317872   (View Abstract at PubMed)

Pathfinding of axons in the developing nervous system is thought to be mediated by glycoproteins expressed on the surface of embryonic axons and growth cones. One molecule suggested to play a role in axonal growth is TAG-1, a 135 kd glycoprotein expressed transiently on the surface of subsets of neurons in the developing mammalian nervous system. We isolated a full-length cDNA clone encoding rat TAG-1. TAG-1 has six immunoglobulin-like domains and four fibronectin type III-like repeats and is structurally similar to other immunoglobulin-like proteins expressed on developing axons. Neurons maintained in vitro on a substrate of TAG-1 extend long neurites, suggesting that this protein plays a role in the initial growth and guidance of axons in vivo. TAG-1 is anchored to the neuronal membrane via a glycosyl phosphatidylinositol linkage and is also released from neurons, suggesting that TAG-1 also functions as a substrate adhesion molecule when released into the extracellular environment.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
axonogenesis  IDA 727707 RGD 
cell-matrix adhesion  IDA 727707 RGD 

Cellular Component
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
cell surface  TAS 727707 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Cntn2  (contactin 2)


Additional Information