Rapidly photoactivatable ATP probes for specific labeling of tropomyosin within the actomyosin protein complex

Souta Masuda, Takenori Tomohiro, Yasumaru Hatanaka*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

6 被引用数 (Scopus)

抄録

Tropomyosin-specific photoaffinity adenosine triphosphate (ATP) probes have been first developed, in which a diazirine moiety is incorporated into the γ-phosphate group as a rapidly carbene-generating photophore. These probes clearly labeled tropomyosin in the presence of other actomyosin components, that is, myosin, actin, and troponins. The specific labeling of tropomyosin was easily identified by selective trapping of the photo-incorporated ATP probe on Fe3+-immobilized metal ion affinity chromatography (IMAC) beads. The characteristic nature of tropomyosin-specific photocross-linking was further confirmed with a biotin-carrying derivative of the ATP probe. These data suggest that the tropomyosin on the actin filament assembly is located in close proximity to the ATP binding cavity of myosin.

本文言語英語
ページ(範囲)2252-2254
ページ数3
ジャーナルBioorganic and Medicinal Chemistry Letters
21
8
DOI
出版ステータス出版済み - 2011/04/15

ASJC Scopus 主題領域

  • 生化学
  • 分子医療
  • 分子生物学
  • 薬科学
  • 創薬
  • 臨床生化学
  • 有機化学

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