α-アミノキシ/α-ヒドラジノ酸の連続した組み込み
Takayuki Katoh1, Hiroaki Suga1
1Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Journal of the American Chemical Society
|November 3, 2021
まとめ
研究者は,リボソームトランスレーションを用いて,様々なα-アミノキシおよびα-ヒドラジノ酸をペプチドに組み込む最初の成功例を示した. これは特定の折り畳み特性を持つ新しいペプチド構造を作成するためのツールキットを拡張します.
科学分野:
- 生物化学
- ペプチド化学
- 合成生物学
背景:
- α-アミノキシ酸とα-ヒドラジノ酸は,β-アミノ酸の類型であり,β-炭素は酸素または窒素に置き換えられる.
- これらの改変は,特定のペプチドの折り畳みを偽γターンに誘導する.
- 以前の研究では,リボソームトランスレーション経由でアキラル α- アミノキシアセチン酸 (NOGly) とl- α- ハイドラジノフェニララニン (l- NNPhe) の単一の組み込みが確認されました.
研究 の 目的:
- 異なる構成のα-アミノキシ/α-ヒドラジノ酸のリボソーム耐性を調べる (l/d).
- これらの改変されたアミノ酸をペプチドに複数連続的に組み込む可能性を調査する.
- マクロサイクルを含む様々なペプチド基板にこれらのアナログを組み込むことの実現可能性を評価する.
主な方法:
- 改変されたアミノ酸のリボソーム翻訳
- α-アミノキシ/α-ヒドラジノ酸を含む様々なモデルペプチドの合成と分析.
- マクロサイクル構造を含む異なるペプチド構造に組み込む.
主要な成果:
- l/d構成のα-アミノキシとα-ヒドラジノ酸の連続した組み込みが成功していることが実証されています.
- 改変されたアミノ酸と リボソーム変換機構の互換性を示した.
- これらのアナログを様々なペプチドモデルとマクロサイクルのペプチド基板に成功裏に組み込んだ.
結論:
- リボソームは,より広い範囲のα-アミノキシおよびα-ヒドラジノ酸の複数の連続した組み込みを許容できる.
- この突破は,定義された二次構造 (偽γ回転) のペプチドを作成するための合成能力を拡張します.
- 様々な用途に合わせた新種のペプチドの開発を可能にします.
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