Words similar to supraoperon
Example sentences for: supraoperon
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In their genomes outside the supraoperon boundaries, Nostoc and Anabaena possess a full complement of genes for biosynthesis of tryptophan, tyrosine and phenylalanine.
Since the basic single-copy repertoire of dispersed aromatic-pathway genes shown in Figure 2for Synechocystis (Ssp) is representative of other cyanobacteria such as Synechococcus (Syn) and Prochlorococcus (Pmu) and is also present at dispersed extra-operonic loci of Anabaena and Nostoc , an obvious possibility would seem to be that the genes of the supraoperon originated by LGT in a common ancestor of Anabaena and Nostoc . If so, speciation was followed by different species-specific gene-insertion events.
The additional TyrA (p) present only in Anabaena and Nostoc and located as the carboxy-terminal gene of the supraoperon exhibits identities of 39-43% with the TyrA (p) proteins of some enteric bacteria.
A number of distinctive properties of the supraoperon gene block represent items of biological context (as discussed by Lawrence and Ochman [ 21]) that potentially could provide excellent tracking clues about the identity of the putative donor in LGT.
The genes comprising the supraoperon of B. subtilis are aroG → aroB → aroH → trpAaBDCEbEa → hisH b → tyrA p → aroF . A hierarchy of internal promoters and terminators exists for differential control of the B. subtilis supraoperon.