Bmp4 -

: Binding to Type I (ALK3/ALK6) and Type II (BMPR2) receptors triggers the phosphorylation of R-Smads (Smad1/5/8) , which complex with Smad4 and move into the nucleus to regulate gene expression.

BMP4 is synthesized as a 408-residue preproprotein that undergoes specific proteolytic cleavage to become a mature 116-residue active peptide. : Binding to Type I (ALK3/ALK6) and Type

: It typically suppresses "default" neural differentiation to promote skin formation; however, in the adult brain, it helps maintain neural stem cell pools. Metabolic & Clinical Significance Metabolic & Clinical Significance BMP4 is essential from

BMP4 is essential from the earliest stages of life, where its loss often leads to embryonic lethality. Biological Structure & Mechanisms : It drives the

is a versatile secreted signaling molecule belonging to the TGF-beta superfamily . Known for its critical role in early development and tissue homeostasis, it acts as a "master controller" for cellular fate. Biological Structure & Mechanisms

: It drives the formation of the heart, lungs, kidneys, and limbs. In the heart, it is essential for atrio-ventricular septation .

: It can also directly activate pathways like ERK, p38 MAPK, and JNK to regulate migration and survival.