
MEK1 plays contrary stage-specific roles in skeletal myogenic differentiation
Keywords: ERK; extracellular signal-regulated kinase; Id2; inhibitor of DNA binding (differentiation)2; MAPK; mitogen-activated protein kinase; MEK1; mitogen-activated protein kinase kinase 1; MKP-1; mitogen-activated protein kinase phosphatase-1; MRF; myogenic reg