Fig. 8.

HPLC of the pyridylaminated product (A) obtained from the oligopeptide and its acid hydrolysates (B). An oligopeptide from human blood coagulation factor IX was hydrazinolyzed and the products were pyridylaminated. Arrows indicate the elution positions; 1, pyridylaminated galactose; 2, pyridylaminated glucose; 3, pyridylaminated mannose; 4, pyridylaminated xylose. (Reprinted from J. Biochem. 104, Hase, S. et al. 867. Copyright (1988), with permission from The Japanese Biochemical Society.)