The cytoplasmic region of the amyloid β-protein precursor (APP) is necessary and sufficient for the enhanced fast velocity of APP transport by kinesin-1

Maoko Tsukamoto, Kyoko Chiba, Yuriko Sobu, Yuzuha Shiraki, Yuka Okumura, Saori Hata, Akira Kitamura, Tadashi Nakaya, Seiichi Uchida, Masataka Kinjo, Hidenori Taru, Toshiharu Suzuki

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Abstract

Amyloid β-protein precursor (APP) is transported mainly by kinesin-1 and at a higher velocity than other kinesin-1 cargos, such as Alcadein α (Alcα); this is denoted by the enhanced fast velocity (EFV). Interaction of the APP cytoplasmic region with kinesin-1, which is essential for EFV transport, is mediated by JNK-interacting protein 1 (JIP1). To determine the roles of interactions between the APP luminal region and cargo components, we monitored transport of chimeric cargo receptors, Alcα (luminal)–APP (cytoplasmic) and APP (luminal)–Alcα (cytoplasmic). Alcα-APP is transported at the EFV, whereas APP-Alcα is transported at the same velocity as wild-type Alcα. Thus, the cytoplasmic region of APP is necessary and sufficient for the EFV of APP transport by kinesin-1.

Original languageEnglish
Pages (from-to)2716-2724
Number of pages9
JournalFEBS Letters
Volume592
Issue number16
DOIs
Publication statusPublished - Aug 2018

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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