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.
Itâs â¬8 per adult (15 and up) to walk across the bridge. You can buy in the shop or at the turnstile to the bridge. There are restrooms in the building next to the shop. In the photo above the shop is at the bottom of the photo and you can see the fences you hike along to get up to the top.