A ligand is any molecule that binds to a specific site on a protein or other molecule. In this case, the estrogen hormone 17-beta-estradiol is the ligand, and the estrogen receptor is the protein. Binding turns on, or activates, a hormone receptor.
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Bars and restaurants will be packed with fans watching the Mayweather Pacquiao fight Saturday night. Fans will pay a record $99.99 to watch the fight in HD at home. But bars and restaurants have to pay much more, using a formula that accounts for a location's capacity.Naturally, the licensing fees for this fight are also at a record high.prinkled among them will be the Pay-Per-View police looking for venues that didn't pay the expensive licensing fee to show the match. Fans will pay a record $99.99 to watch the fight in HD at home.