5.1.1.7 6.5 8 - 5.1.1.7 6.5 8 in both directions 5.1.1.7 6.8 - assay at 5.1.1.7 7.5 - maximum activity of recombinant DapF consisting of silent mutation of the first 10 codons of the open reading frame 5.1.1.7 8 - assay at