amelogenin

noun

am·​e·​lo·​gen·​in ˌa-mə-lō-ˈje-nən 

: any of various proteins produced by ameloblasts that make up the bulk of the extracellular matrix of developing tooth enamel and play a role in regulating the mineralization of tooth enamel

In addition to demonstrating how these highly organized amelogenin structures serve as scaffolds for enamel formation, the findings suggest that the same protein structures might initiate … the crystallization process …

—Alexandra Goho, Science News