Sandbox Reserved 1797

This Sandbox is Reserved from Mar 1 through Jun 1, 2023 for use in the course CHEM 351 Biochemistry taught by Bonnie_Hall at the Grand View University, Des Moines, USA. This reservation includes Sandbox Reserved 1796 through Sandbox Reserved 1811.

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ʟ-aspartate–ʟ-methionine ligase (LdmS)(7r8p)

spinqualitylabelsall models LdmS Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Function of your protein LdmS is found in Staphylococcus aureus. It exists in an open state but, can also be seen modified to a closed state. It has related mechanisms to different ATP-grasp enzymes just with different active sites. LdmS main function is to aid in the metabolism of Staphylococcal sulfur amino acids by specifically controlling Met and Cys metabolism . It can still function in settings with a lot of nutrients, or hardly any at all. This is very bad for the person infected with Staph. It's known substrates are L-Met and L-Asp. It is a receptor and interacts with ADP and citrate. Biological relevance and broader implications LdmS is important to the biology of humans. Staph infection is a serious disease that can become resistant to antibiotics making it difficult to treat . It is important to study how LdmS can metabolize Staphylococcal so that we can monitor how it is mutating against antibiotics. We can also see how LdmS may help with creating stronger, more resistant antibiotics for future use. LdmS is relevant to any disease that is catalyzed by Met and Cys, which helps host the disease in the body. Important amino acids The ligands are there to facilitate binding at the active sites to further catalyze the metabolism. The polar cavity and hydrophobic cavity are indicated here. These sites help the protein bind to other atoms even in an aqueous solutions. The hydrophobic sites are actually inside of the protein so that they do not interact with the aqueous solution. Structural highlights The secondary structure is interesting to look at. The magenta color represents the alpha helices. The alpha helices represent how the protein chain is in real life. This model isn't exactly accurate as there is actually no space inside the helix, it is too full of other atoms. The orange color represents the beta strands. The beta strand forms hydrogen bonds with surrounding side chains. The secondary structure is stabilized with hydrogen bonding down the backbone. The tertiary structure is a bunch of secondary structures bound together to make the overall peptide chain. The space filling model of LdmS is a more realistic application of how the molecules within LdmS actually interact and their surroundings. On the flip side, the traditional ball and stick models show the actual bonds between atoms. There is a cleft for substrate binding that can be seen by the portion of the molecule hanging away and colored lime green. This cleft interacts with the substrate and is an active binding site. It is essential in the binding to L-Met and L-Asp. 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.