Engineering cooperativity in biomotor-protein assemblies.
A biosynthetic approach was developed to control and probe cooperativity in multiunit biomotor assemblies by linking molecular motors to artificial protein scaffolds. This approach provides precise control over spatial and elastic coupling between motors. Cooperative interactions between monomeric kinesin-1 motors attached to protein scaffolds enhance hydrolysis activity and microtubule gliding velocity. However, these interactions are not influenced by changes in the elastic properties of the scaffold, distinguishing multimotor transport from that powered by unorganized monomeric motors. These results highlight the role of supramolecular architecture in determining mechanisms of collective transport.
Diehl
Michael R
MR
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA. diehl@rice.edu
Zhang
Kechun
K
Lee
Heun Jin
HJ
Tirrell
David A
DA
D000251:Adenosine Triphosphatases / Q000737:chemistry; D000595:Amino Acid Sequence; D004548:Elasticity; D004549:Elastin / Q000737:chemistry; D006868:Hydrolysis; D016547:Kinesins / Q000737:chemistry; D008870:Microtubules / Q000502:physiology; D008954:Models, Biological; D020409:Molecular Motor Proteins / Q000502:physiology*; D008969:Molecular Sequence Data; D015202:Protein Engineering; D017434:Protein Structure, Tertiary; D011506:Proteins / Q000737:chemistry / Q000502:physiology*; D011994:Recombinant Proteins / Q000737:chemistry; D013329:Structure-Activity Relationship
D020409:Molecular Motor Proteins; D011506:Proteins; D011994:Recombinant Proteins; D004549:Elastin; D000251:Adenosine Triphosphatases; D016547:Kinesins