National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)
DP5 OD021396
米国
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)
U54GM103368
米国
引用
ジャーナル: Cell / 年: 2018 タイトル: Structural Basis for the RNA-Guided Ribonuclease Activity of CRISPR-Cas13d. 著者: Cheng Zhang / Silvana Konermann / Nicholas J Brideau / Peter Lotfy / Xuebing Wu / Scott J Novick / Timothy Strutzenberg / Patrick R Griffin / Patrick D Hsu / Dmitry Lyumkis / 要旨: CRISPR-Cas endonucleases directed against foreign nucleic acids mediate prokaryotic adaptive immunity and have been tailored for broad genetic engineering applications. Type VI-D CRISPR systems ...CRISPR-Cas endonucleases directed against foreign nucleic acids mediate prokaryotic adaptive immunity and have been tailored for broad genetic engineering applications. Type VI-D CRISPR systems contain the smallest known family of single effector Cas enzymes, and their signature Cas13d ribonuclease employs guide RNAs to cleave matching target RNAs. To understand the molecular basis for Cas13d function and explain its compact molecular architecture, we resolved cryoelectron microscopy structures of Cas13d-guide RNA binary complex and Cas13d-guide-target RNA ternary complex to 3.4 and 3.3 Å resolution, respectively. Furthermore, a 6.5 Å reconstruction of apo Cas13d combined with hydrogen-deuterium exchange revealed conformational dynamics that have implications for RNA scanning. These structures, together with biochemical and cellular characterization, provide insights into its RNA-guided, RNA-targeting mechanism and delineate a blueprint for the rational design of improved transcriptome engineering technologies.
履歴
登録
2018年8月1日
登録サイト: RCSB / 処理サイト: RCSB
改定 1.0
2018年10月3日
Provider: repository / タイプ: Initial release
改定 1.1
2019年11月27日
Group: Data collection / カテゴリ: em_software / Item: _em_software.name