1441: Y1 Receptor Homology Modeling
|Name:||1441: Y1 Receptor Homology Modeling|
|Expired:||10/24/2017 - 23:00|
|Description:||The neuropeptide Y receptors are a group of human cell surface receptors found in the brain and digestive system, and are involved in regulating hunger and satiety. A better understanding of the neuropeptide Y receptors could allow scientists to better understand the diseases and disorders which involve misregulation of hunger and satiety. Treatment of obesity is the obvious example, but there are other disorders characterized by a mis-regulation of hunger (such as Prader-Willi syndrome). Chemotherapy is often associated with appetite suppression, so a treatment which can increase hunger could help reduce the dangerous weight loss sometimes seen in chemotherapy patients.
In this puzzle we're asking you to model the human Y1 receptor. Currently, no structures are known for any of the neuropeptide Y receptors, but they are part of a larger class of proteins called "G-protein coupled receptors (GPCRs)". GPCRs are membrane-embedded proteins, characterized by the seven alpha helices which span the membrane. This is the largest class of proteins targeted by therapeutics. As this is a rather large protein, we're breaking the protein in the middle of the membrane, freezing the part towards the inside of the cell. We're asking you to model the part on the outside of the cell, including the ligand-binding pocket (in the middle of the helices). This portion will be critical in designing a small molecule to target Y receptors.
This is a multi-start puzzle, and we're providing you with nine different predicted structures, each based on different known structures. These have all been grafted onto the same frozen portion, so some cleanup of the long transmembrane helices at the interface between the frozen and movable sections may be needed. To access the different starting structures, use the "Reset Puzzle" option to restart from a new structure.
This puzzle is the first of a series from an academic collaboration that is hoping to develop small molecule "probe compounds" which can modulate the activity of Y receptors in the lab. Having these probe compounds can help scientists better understand these receptors and the role they play in diseases.
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