When a microtubule forms, its individual protein units line up in such a way that a binding site for kinesin appears every 8 nanometers - exactly the distance Block
's group has measured between steps.
Unknown Distance Block
handicap: 1, R Meadows; 2, J Rees; 3, H Conlin.
Fulton saw another strike from a similar distance blocked
just a few moments later, while Rovers came agonisingly close to hitting back themselves, with Erwin Mulder, starting for the second game in a row, doing well to tip Sercombe's dipping free-kick from distance over the bar.
Grimes and Celina both had efforts from distance blocked
while James should have got the Swans on the scoresheet in the 73rd minute after neat play from Wayne Routledge on the right, with Rangel clearing the Wales international's shot off the line.