A 419bp l(2)gd1 promoter fragment drives expression of a full-length l(2)gd1 cDNA (from the LD23056 clone), in which all the consensus Cdk1 phosphorylation sites have been mutated to a non-phosphorylatable Ala residue (amino acid substitutions S217A, T222A, S225A, T239A, T242A, S254A, T347A, T436A, S442A, S445A, T457A, T465A, S474A and T712A). The coding sequence is tagged at the N-terminal end with EGFP.