FIGURE 3.
Organization of the urea acquisition and catabolism genes in Synechocystis PCC 6803. The genes are shown as colored boxes pointing in the direction of their transcription. Gray boxes correspond to genes not known to be involved in urea metabolism or transport. abc, ABC transporter; argB, acetylglutamate kinase; abc, ABC transporter; dnaX, DNA polymerase III subunit delta; fed, ferredoxin; gst, glutathione-S-transferase; ho, hypothetical protein; htrA, serine protease; lacF, lactose ABC transporter permease; mbpq, methyl-6-phytyl 1,4-hydroquinone methyltransferase; merA, mercuric reductase; mutL, DNA mismatch repair; nit, nitrilase; pleD, pleD protein; proA, gamma-glutamyl phosphate reductase; radA homolog; reh, rehydrin; rlpA, rare lipoprotein A; sms, DNA repair protein.