Xu J, Brown NJS, Seol Y, Neuman KC. Heterogeneous distribution of kinesin-streptavidin complexes revealed by mass photometry.
SOFT MATTER 2024;
20:5509-5515. [PMID:
38832814 PMCID:
PMC11254546 DOI:
10.1039/d3sm01702h]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Kinesin-streptavidin complexes are widely used in microtubule-based active-matter studies. The stoichiometry of the complexes is empirically tuned but experimentally challenging to determine. Here, mass photometry measurements reveal heterogenous distributions of kinesin-streptavidin complexes. Our binding model indicates that heterogeneity arises from both the kinesin-streptavidin mixing ratio and the kinesin-biotinylation efficiency.
Collapse