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| Acronym | Full form | |
|---|---|---|
| Acronym: GPI | glycosylphosphatidylinositol | les|signalling molecules]] or ligand (biochemistry)|ligands (GFLs). In order to activate RET, first GFLs must form a complex with a glycosylphosphatidylinositol (GPI)-anchored co-receptor. The co-receptors themselves are classified as members of the GDNF receptor-α (GFRα) protein family. Different members of the GFRα family (GFRα1-GFRα4) exhibit a specifi |