TRANSFERASE, NON-PROTEIN KINASE, CHOLINE KINASE, STRUCTURAL GENOMICS CONSORTIUM, SGC, HEMICHOLINIUM-3, PHOSPHORYLATION, ATP-BINDING, KINASE, NUCLEOTIDE-BINDING, PHOSPHOLIPID BIOSYNTHESIS, PHOSPHOPROTEIN 3LQ3 CRYSTAL STRUCTURE OF HUMAN CHOLINE KINASE BETA IN COMPLEX WITH PHOSPHORYLATED HEMICHOLINIUM-3 AND ADENOSINE NUCLEOTIDE