<p>This entry consists of ABC transporter ATP-binding proteins associated with urea transport and metabolism. They are encoded in a conserved five-gene transport operon typically found adjacent to urease genes. It was shown in Cyanobacteria that disruption leads to the loss of high-affinity urea transport activity [<cite idref="PUB00042949"/>].</p> ABC transporter, urea, ATP-binding protein, UrtD