Sandbox Reserved 1448

This Sandbox is Reserved from Jan 22 through May 22, 2018 for use in the course Biochemistry II taught by Jason Telford at the Maryville University, St. Louis, Missouri, USA. This reservation includes Sandbox Reserved 1446 through Sandbox Reserved 1455.

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Human Lactate Dehydrogenase

spinqualitylabelsall models Caption for this structure Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Lactate dehydrogenase is a quaternary structure found in humans. It has two main subunits, H and M (heart and muscle). The H form converts pyruvates to lactate, while the M form converts lactate to pyruvates. Based on the different reactions the two subunits preform, different combinations can be found throughout the body. 4H is found in the heart, 3H1M is found in the reticuloendothelial (part of the immune system), 2H2M is found in the kidneys, and 4M is found in the muscles and liver. Lactate dehydrogenase is a main component of anaerobic respiration within the human body. This molecule come into play when there is a lack of oxygen, such as during intense exercise. During intense exercise our body requires a larger amount of oxygen, and glycolysis becomes our main source of energy. In order for glycolysis to work smoothly and avoid access NADH, we need available oxygen. This is where LDH (lactase dehydrogenase) comes into play. LDH converts pyruvate into lactate, giving our body more ATP. When we halt the exercise and take a deep breath LDH converts the lactate back to pyruvate, and we continue on our normal aerobic pathway of glycolysis. 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.

References

https://www.rcsb.org/structure/4nd4