The protein encoded by this gene catalyzes the first step in ubiquitin conjugation to mark cellular proteins for degradation.

This Ubiquitin protein ligase recognizes which protein needs to be tagged and catalyzes the transfer of ubiquitin to that protein.

Although the parasite has a heme oxygenase like protein which binds bound heme and protoporphyrin IX with modest affinity, this protein does not catalyze heme degradation in vivo.

These proteins can specifically catalyze a single reaction, so that reactions can be controlled very precisely.

Many proteins catalyze a chemical reaction.

A separate protein, Methionine Synthase Reductase, catalyzes the regeneration of Co(II) and the restoration of enzymatic activity.

The protein encoded by this gene catalyzes the formation of inositol 1,4,5-trisphosphate and diacylglycerol from phosphatidylinositol 4,5-bisphosphate.

This protein catalyzes the final step, reducing trans-2,3-enoyl-CoA to saturated acyl-CoA.

In Fungi, a similar protein exists but lacks the dihydroorotase function: another protein catalyzes the second step.

The protein encoded by this gene catalyzes the conversion of sulfated steroid precursors the free steroid.