Osteopontin

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Osteopontin (314 aa, ~35 kDa) is encoded by the human SPP1 gene. This protein is involved in the regulation of both tissue mineralization and cell-cell signaling.

**Synonyms:** - Bone Sialoprotein 1 - Nephropontin - SPP-1 - SPP1 - Secreted Phosphoprotein 1 - Urinary Stone Protein - Uropontin