The signal recognition particle (SRP) recognizes and binds the signal sequence of nascent proteins as they emerge from the ribosome. We present here the 3.0-Å structure of a signal sequence bound to ...

Turn signal use is a critical requirement at any time, and once turned on, they need to be turned off in a timely manner. Failure to do so can cause confusion for both oncoming and following traffic, ...

An obvious improvement on the retractable semaphore devices used on some cars in the first half of last century, turn signals have remained largely unchanged since being patented in 1938 and ...