Recombinant human ALK-1 protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

ALK-1 also known as ACVRL1 or ALK1 protein is a receptor serine/threonine kinase with a molecular mass of approximately 55 kDa. It plays an important role in the TGF-beta superfamily signaling particularly in angiogenesis and blood vessel development. Expressed mainly in endothelial cells ALK-1 mediates cellular responses essential for maintaining vascular stability. The careful balance of its signaling is necessary indicating its importance in physiological conditions.

Biological function summary

The function of ALK-1 extends to the formation and maintenance of vascular endothelium as part of the larger receptor complex. It interacts with ligands such as BMP9 and BMP10 which regulate endothelial cell proliferation and differentiation. ALK-1's role as part of this receptor complex highlights its involvement in controlling the fine balance between angiogenic and anti-angiogenic processes. Its biological activity is vital for healthy vascular development and homeostasis.

Pathways

ALK-1 activation is a part of the BMP signaling pathway a branch of the larger TGF-beta pathway. This pathway is significant in various cellular processes including growth and differentiation. ALK-1 interacts with other signalling mediators like SMAD1/5/8 proteins which translocate to the nucleus to affect gene expression. Connecting with these pathways ALK-1 aligns closely with ACVR2A and ENG (Endoglin) which further highlight its role in vascular biology.

ALK-1 mutations or dysregulation leads to conditions such as hereditary hemorrhagic telangiectasia (HHT) and pulmonary arterial hypertension (PAH). These conditions showcase the important role ALK-1 plays in vascular integrity and signaling. ALK-1 is connected to disorders through interactions with proteins such as ENG further highlighting its involvement in vascular-related pathologies. Maintaining precise ALK-1 function is pivotal to preventing these disorders indicating its potential as a therapeutic target or biomarker.