COMPND    MOL_ID: 1;
COMPND   2 MOLECULE: von Willebrand antigen 2;
COMPND   3 CHAIN: A, B, E, G, I, K, M, O, Q, S, U, W, Y, a;
COMPND   4 FRAGMENT: D1D2 ;
COMPND   5 ENGINEERED: YES;
EXPDTA     ELECTRON MICROSCOPY