Molecule of the Month: Dynein
The motor protein dynein transports cellular cargo along microtubules
Making the Connection
Exploring the Structure
Dynein (PDB entry 3vkh)
Dynein binds to four ATP molecules, but only one is involved in the power stroke, shown here at the top in white. The other three sites (shown in gray) are thought to play a regulatory role. To explore this structure in more detail, click on the image for an interactive JSmol.
Topics for Further Discussion
- Many AAA+ proteins are composed of a ring of identical subunits, but dynein has all these subunits connected into one chain. You can compare, for instance, the structure of HslUV (a bacterial AAA+ protease) in PDB entry 1yyf.
August 2014, David Goodselldoi:10.2210/rcsb_pdb/mom_2014_8