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: 3CQZ
Crystal structure of 10 subunit RNA polymerase II in complex with the inhibitor alpha-amanitin
Chain
A
DNA-directed RNA polymerase II subunit RPB1 - Saccharomyces cerevisiae