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The study aims to understand the role of cargo and dynamin in the maturation of clathrin-coated pits during endocytosis.

March 12, 2009PLoS BiologyOpen Access

Cargo and Dynamin Regulate Clathrin-Coated Pit Maturation

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The study aims to understand the role of cargo and dynamin in the maturation of clathrin-coated pits during endocytosis.
Used total internal reflection fluorescence microscopy (TIR-FM) to observe clathrin-mediated endocytosis.
Implemented particle-tracking software and statistical methods to analyze CCP trajectories.
Manipulated cargo concentration and utilized siRNA depletion of dynamin-2 to assess effects on CCP maturation.
Identified three CCP subpopulations: two short-lived and one longer-lived productive subpopulation.
Found that increasing cargo concentration enhances maturation efficiency of productive CCPs (exact metrics not provided).
Dynamin-2 depletion and reintroduction studies indicated dynamin's role in controlling abortive intermediates and CCP maturation rate.

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Randomized trial identifies how cargo and dynamin impact CCP maturation, suggesting a control mechanism.

Loerke et al. (2009) studied this question.

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