Download MendeleyHuman ornithine aminotransferase complexed with L-canaline and gabaculine: structural basis for substrate recognition.
Shah, S.A., Shen, B.W., Brunger, A.T.(1997) Structure 5: 1067-1075
- PubMed: 9309222
- DOI: https://doi.org/10.1016/s0969-2126(97)00258-x
- Primary Citation of Related Structures:
1GBN, 2CAN - PubMed Abstract:
Ornithine aminotransferase (OAT) is a 45 kDa pyridoxal-5'-phosphate (PLP)-dependent enzyme that catalyzes the conversion of L-ornithine and 2-oxoglutarate to glutamate-delta-semialdehyde and glutamic acid, respectively. In humans, loss of OAT function causes an accumulation of ornithine that results in gyrate atrophy of the choroid and retina, a disease that progressively leads to blindness. In an effort to learn more about the structural basis of this enzyme's function, we have determined the X-ray structures of OAT in complex with two enzyme-activated suicide substrates: L-canaline, an ornithine analog, and gabaculine, an irreversible inhibitor of several related aminotransferases.
Organizational Affiliation:
Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA.
