Leader peptides and candidate attenuators upstream the trp operons in Corynebacterium and Streptomyces spp. a) Coordinates and protein identifiers of the first genes in the operons. b) Alignment of the leader peptides. The numbers denote genome positions of the aligned fragments. c) Alignment of the attenuators. Tryptophan and stop codons are shown in bold. The terminator hairpins are highlighted in grey, the antiterminator hairpins are underlined. The alignment contains fragments between the tryptohan codons and the terminator hairpin followed by poly-U-tracts. The numbers denote genome positions of the aligned fragments.