Words similar to trpd
Example sentences for: trpd
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Likewise, Npu TrpD_2 and Npu TrpD_3 exhibit greater identity with their Asp orthologs than with their Npu paralogs.
Thus, Anabaena has two additional extra-operonic paralogs of aroA Iβ and trpD . In addition to extra-operonic, free-standing copies of trpAa and trpAb , a second fused gene ( trpAa • trpAb_2 ) encoding the two domains of anthranilate synthase is present in Anabaena . Nostoc has two extra-operonic copies of aroA Iβ , aroB and trpD . All cyanobacteria possess AroA of the Iβ class ( aroA Iβ ). While this is also true of the Anabaena/Nostoc lineage (in fact, having multiple copies), both Anabaena and Nostoc possess an additional gene encoding AroA of the Iα class ( aroA Iα ). All cyanobacteria possess a tyrA gene of the arogenate-specificity class ( tyrA a ), but the Anabaena/Nostoc supraoperons also possess a tyrA gene deemed to be a cyclohexadienyl dehydrogenase [ 28] with a favored specificity for prephenate ( tyrA (p) ) (C.A.B.
The E. coli gene fusion has been re-designated with the convention of a bullet to represent a fusion: trpG• trpD [ 17].
In Nostoc, tyrP1 (encoding tyrosinase) has been inserted between trpEa and trpEb . All other cyanobacteria, including Anabaena , lack tyrP1 . The two trp operons are less compact than frequently observed elsewhere, and relatively large intergenic spacing exists, especially in N. punctiforme . The only instance of translational coupling is between trpAa • trpAb and trpD in N. punctiforme .
As shown in Figure 2, both Anabaena and Nostoc exhibit the same relative order of operonic trp genes: trp Aa• trp Ab → trp D → trpEa → trpEb → trpB . trpAa and trpAb are fused, as indicated in Figure 2with a filled bar and in the text by the bullet in the notation: trpAa • trpAb . In Anabaena, qor (encoding NADPH: quinone reductase) has been inserted between trpD and trpEa . Another qor paralog is present elsewhere in the genome of Anabaena . Nostoc also has two qor paralogs, but neither resides within the tryptophan operon.
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