The submitted paper deals with possibilities of assessment of human age based on findings of stereospecific breakdown of proteins containing D-formy of aspartic acid.The stereospecificity of enzymatic breakdown assumes that after enzymatic hydrolysis peptide breakdown producta with different molecular weights - the so-called peptide map - will be formed, depending how many D-aspartyl residues the protein contains. The suthors proved in the submitted preliminary study in subjects of different age the formation of breakdown products of different size in non-collagenous proteins of human dentin which was hydrolyzed by protease VS from Staphylococcus aureus.

        Key words: assessment of human age, d-aspartic acid, non•collagenous dentin proteins, breakdown by protease from Staphylococus aureus, peptide map