WebGL does not seem to be available.

This can be caused by an outdated browser, graphics card driver issue, or bad weather. Sometimes, just restarting the browser helps. Also, make sure hardware acceleration is enabled in your browser.

For a list of supported browsers, refer to http://caniuse.com/#feat=webgl.

Sequence Annotations in 3D: 4LF5
Crystal Structure of 30S ribosomal subunit from Thermus thermophilus
Chain
A
ATP-dependent Clp protease proteolytic subunit - Escherichia coli