Formation of Well-Oriented Microtubules with Preferential Polarity in a Confined Space under a Temperature Gradient

  • Akira Kakugo
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Yoshiki Tamura
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Kazuhiro Shikinaka
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Momoko Yoshida
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Ryuzo Kawamura
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Hidemitsu Furukawa
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Yoshihito Osada
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan
  • Jian Ping Gong
    Department of Biological Science, Graduate School of Science, Hokkaido University, and PRESTO, Japan Science and Technology Agency, Sapporo 060-0810, Japan

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Description

Tubulin polymerization in a confined space under a temperature gradient produced well-oriented microtubule assemblies with preferential polarity. We analyzed the structure and polarity of these assemblies at various levels of resolution by performing polarized light microscopy (millimeter order), fluorescence microscopy (micrometer order), and transmission electron microscopy (nanometer order).

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