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Cloning of the catalytic domain of 4-diphosphocytidyl-2-C-methyl-d-erythritol kinase from tomato. A, wild-type cDNA sequence (GenBank accession no. U62773); B, DNA sequence adapted to E. coli. Mutagenized residues are shown in inverse contrast; adapted codons are shaded. Oligonucleotides used for PCR amplifications are indicated by arrows.
