3ELH TRANSFERASE, NUCLEOSIDE DIPHOSPHATE KINASE MIMIVIRUS PHOSPHOTRANSFERASE NUCLEOTIDE BINDING, ATP-BINDING, KINASE, MAGNESIUM, METAL- BINDING, NUCLEOTIDE METABOLISM, NUCLEOTIDE-BINDING, PHOSPHOPROTEIN X-RAY STRUCTURE OF ACANTHAMOEBA PLOYPHAGA MIMIVIRUS NUCLEOSIDE DIPHOSPHATE KINASE COMPLEXED WITH DUDP