Urea cycle Title slide.

The transport of nitrogen to the liver and kidney.

Urea.

Two cellular locations: mitochondria and cytosol Two cellular locations: mitochondria and cytosol. The reactions of the urea cycle.

Another vrsion showing the two compartments and the reactions of the urea cycle.

Formation of cabamoyl phosphate as the first step in the cycle.

The reaction mechanism for CPS I.

The citrollyl-AMP intermediate.

Another view of the cycle.

Linking of two cycles to make a bicycle.

Communication with the urea cycle.

The formation of the activator N-acetylglutamate.