The crystal structures of ornithine carbamoyltransferase from Mycobacterium tuberculosis and its ternary complex with carbamoyl phosphate and L-norvaline reveal the enzyme's catalytic mechanism.
Sankaranarayanan, R., Cherney, M.M., Cherney, L.T., Garen, C.R., Moradian, F., James, M.N.(2008) J Mol Biol 375: 1052-1063
- PubMed: 18062991 
- DOI: 10.1016/j.jmb.2007.11.025
- Primary Citation of Related Structures:  
2I6U, 2P2G - PubMed Abstract: 
Mycobacterium tuberculosis ornithine carbamoyltransferase (Mtb OTC) catalyzes the sixth step in arginine biosynthesis; it produces citrulline from carbamoyl phosphate (CP) and ornithine (ORN). Here, we report the crystal structures of Mtb OTC in orthorhombic (form I) and hexagonal (form II) space groups ...