Unique zinc binding sites on tubulin.

<p>Top row - all 64 predicted sites at low stringency (red). Bottom row - top six predicted sites at high stringency (green). Light grey - α-tubulin, Dark grey - β-tubulin, Blue - Exchangeable GTP/GDP site. Tubulin is rotated in 90° increments moving from left to right. Scale bar corresponds to 5 nm.