Assertion: vasopressin's arginine | /r/HasProperty | d form
Facets:
Source sentences:
text: Desmopressin is a synthetic peptide with substitution of two different Amino Acids (cystine at the 1 position is changed to a deaminated form; and the arginine at the 8 position is the d form instead of the l form used in all naturally occuring peptides and proteins).