The DMP1 gene (Dentin Matrix Protein 1) is a crucial gene involved in the mineralization of bone and dentin. It encodes a protein that is a member of the small integrin-binding ligand, N-linked glycoprotein (SIBLING) family. The DMP1 protein plays a significant role in the regulation of biomineralization processes, impacting the formation and maintenance of the extracellular matrix in bone and teeth.