HEADER    SIGNALING PROTEIN                       31-DEC-69   7K5J
TITLE     Structure of an E1-E2-ubiquitin thioester mimetic
COMPND    MOL_ID: 2;
COMPND   2 MOLECULE: Ubiquitin-activating enzyme E1 1;
COMPND   3 CHAIN: D, A, C, G, I, K, S, U;
COMPND   4 EC: 6.2.1.45;
COMPND   5 ENGINEERED: YES;
EXPDTA     X-RAY DIFFRACTION
REMARK   2 RESOLUTION.    3.42 ANGSTORMS