Scientists gain first glimpse of one of nature's measuring 'rulers'

It took me a bit of reading to grasp this, but it appears to say that - by messing with the length of this ruler - biologists and chemists may have another way to combat bacteria. Which is good, seeing as how they are getting clever at combating the tools we currently have,

The research findings, published today in Nature Structural & Molecular Biology, represent a significant step forward in our fundamental understanding of biology. While the concept that biology can control the length of polymer chains using a molecular ruler dates back to the early 1970s, the ruler itself has never been visualized by scientists at the molecular level.