Pseudokinase that acts as an allosteric activator of the Golgi serine/threonine protein kinase FAM20C and is involved in biomineralization of teeth. Forms a complex with FAM20C and increases the ability of FAM20C to phosphorylate the proteins that form the 'matrix' that guides the deposition of the enamel minerals.
Secreted . Golgi apparatus . Endoplasmic reticulum .
Highly expressed in lung and liver. Intermediate levels in thymus and ovary.
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