| 摘要 |
<p>A novel polypeptide of the invention contains a peptide unit having an amino acid sequence represented by the following formula (1) and a peptide unit having an amino acid sequence represented by the following formula (2). -Pro-X-Gly- (1) -Y-Z-Gly- (2) (In the formulae, X and Z are the same or different and represent Pro or Hyp and Y represents an amino acid residue having a carboxyl group (such as Asp, Glu or Gla). The ratio (molar ratio) of the peptide unit (1) to the peptide unit (2) is around 99/1 to 1/99. On the polypeptide, an apatite may be carried. The polypeptide does not have a risk of pathogenic infection or undesired side effects and is useful in a biomaterial or biocompatible material with high safety for such as the supplement, repair or regeneration of a biological hard tissue and is also useful as a cosmetic ingredient, a food additive or the like.</p> |
