In biology, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active site consists of residues that form temporary bonds with the substrate (binding site) and residues that catalyse a reaction of that substrate (catalytic site).
Seattle is rolling out 11 rainbow crosswalks in Capitol Hill this week, adding a colorful bang to the annual Pride celebration. The crosswalks cost the city $66,000, said Seattle Department of Transportation spokesman Rick Sheridan, and are permanent.
Rainbow Falls Ride (~2 hours): $68/per person. Enjoy Rainbow Falls and the San Joaquin River in style and comfort. This ride takes approximately 2 hours. Departs at 10:00 a.m. and 2:00 p.m. daily. Please call at least one day in advance for reservations.