LIGASE, NON-PROLINE CIS PEPTIDE BOND, E2 CONJUGATING ENZYME, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI 2EDI SOLUTION STRUCTURE OF THE UQ_CON DOMAIN FROM HUMAN NEDD8- CONJUGATING ENZYME NCE2