Extracellular Matrix and Biomineralization

Ubiquitylation Functions in the Calcium Carbonate Biomineralization in the Extracellular Matrix

Mollusks shell formation is mediated by matrix proteins and many of these proteins have been identified and characterized. However, the mechanisms of protein control remain unknown. Here, we report the ubiquitylation of matrix proteins in the prismatic layer of the pearl oyster, Pinctada fucata. The presence of ubiquitylated proteins in the prismatic layer of the shell was detected with a combi...

Editorial: Brain Extracellular Space: Geometry, Matrix and Physiological Importance

Extracellular Matrix

The tissues of a multicellular organism contain two main components, the cells themselves, onwhichmost biological research has traditionally focused, and the material that lies between the cells. This material is called the extracellular matrix, usually abbreviated to ‘ECM’. The ratio of tissue volume occupied by ECM to that occupied by cells varies from less than 1:10 (e.g. in muscles) to more...

Secreted kinase phosphorylates extracellular proteins that regulate biomineralization.

Protein phosphorylation is a fundamental mechanism regulating nearly every aspect of cellular life. Several secreted proteins are phosphorylated, but the kinases responsible are unknown. We identified a family of atypical protein kinases that localize within the Golgi apparatus and are secreted. Fam20C appears to be the Golgi casein kinase that phosphorylates secretory pathway proteins within S...

Extracellular matrix and liver disease.

SIGNIFICANCE The extracellular matrix (ECM) is a dynamic microenvironment that undergoes continuous remodeling, particularly during injury and wound healing. Chronic liver injury of many different etiologies such as viral hepatitis, alcohol abuse, drug-induced liver injury, obesity and insulin resistance, metabolic disorders, and autoimmune disease is characterized by excessive deposition of EC...