This is a default text for your page '. Click above on edit this page' to modify. Be careful with the < and > signs.
You may include any references to papers as in: the use of JSmol in Proteopedia [1] or to the article describing Jmol [2] to the rescue.
Function of your protein
The specific function of ornithine aminotransferase is responsible for converting ornithine into pyrroline-5-carboxylate (P5C) to another molecule. Glutamate and proline are the amino acids that can be produced from P5C
Homo sapiens is the organism from which the HOAT is derived
These enzymes are comprised of two substrates, GABA and AVA. By using the soaking method, the GABA structure was covalently attached to the PLP, as well as the AVA structure. Both structures were covalently attached to both the PLP and Catalytic Lys292.
Biological relevance and broader implications
A type of cancer that is being studied is hepatocellular carcinoma, an aggressive form of liver cancer. Scientists have determined that HOAT is over-expressed in specific cells.
The study of the HOAT enzyme has enabled scientists to gain a more thorough understanding of metabolism. This is because it provides information about how the human body responds to specific stimuli through the use of this enzyme.
Important amino acids
Amino acids 300-304 are an important parts of the ligands binding site [3].
Hydrogen bonding - Val 143, Asp 263, Gly 142
Covalent bonding - Lys 292
Salt bridge - Asp 262 and Arg
Pi-stacking - Phe 177
Structural highlights
This is a sample scene created with SAT to color by Group, and another to make a transparent representation of the protein. You can make your own scenes on SAT starting from scratch or loading and editing one of these sample scenes.
An ornithine aminotransferase is composed of 50% of alpha helices, 45% of beta sheets, and 5% of other structures.
The beta sheet contains 1 of the 3 catalytic amino acids.
- ↑ Hanson, R. M., Prilusky, J., Renjian, Z., Nakane, T. and Sussman, J. L. (2013), JSmol and the Next-Generation Web-Based Representation of 3D Molecular Structure as Applied to Proteopedia. Isr. J. Chem., 53:207-216. doi:https://dx.doi.org/10.1002/ijch.201300024
- ↑ Herraez A. Biomolecules in the computer: Jmol to the rescue. Biochem Mol Biol Educ. 2006 Jul;34(4):255-61. doi: 10.1002/bmb.2006.494034042644. PMID:21638687 doi:10.1002/bmb.2006.494034042644
- ↑ Butrin A, Butrin A, Wawrzak Z, Moran G, Liu D. Determination of the pH-Dependence, Substrate Specificity and Turnovers of Alternative Substrates for Human Ornithine Aminotransferase. J Biol Chem. 2022 Apr 20:101969. doi: 10.1016/j.jbc.2022.101969. PMID:35460691 doi:https://dx.doi.org/10.1016/j.jbc.2022.101969