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Science 10 March 2006:
Vol. 311. no. 5766, p. 1341
DOI: 10.1126/science.311.5766.1341n
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Cooperativity between motor proteins can allow physiological functions that are not available with single motors. However, investigating how cooperativity relates to function is challenging. Diehl et al. (p. 1468) engineered model systems using bacterial expression of artificial proteins to produce polymeric scaffolds that assemble kinesin motors. They could then control the number of motors, the intermotor distance, and the nature of elastic coupling. Microtubule gliding velocities were enhanced in multimotor assemblies but, in contrast to collections of unorganized motors, were not influenced by the elasticity of the scaffold.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)