1. Am J Physiol Heart Circ Physiol. 2015 Jun 15;308(12):H1463-73.
Fibroblast growth factor 12 (FGF-12), also known as fibroblast growth factor homologous factors (FHF), is cytosolic proteins that is homologous to fibroblast growth factors but is not secreted. FGF12 modulates both cardiac Na+ and Ca+ channel by binding to the conserved proximal part of the C-terminal domain of voltage-gated sodium channels Nav1.5. However, a single missense mutation in FGF12-B (Q7R-FGF12) reduced binding to the NaV1.5 C-terminus, yielding a Brugada Syndrome phenotype.
Measured in a cell proliferation assay using NIH-3T3 mouse fibroblast cells. The EC50 for this effect is less than 5ng/ml.
1μg (R: reducing condition, N: non-reducing condition).