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登録情報 | データベース: PDB / ID: 7r5o | ||||||
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タイトル | 1.58 A STRUCTURE OF HUMAN APOFERRITIN OBTAINED FROM TITAN KRIOS 2 AT eBIC, DLS UNDER COMMISSIONING SESSION CM26464-2 | ||||||
![]() | Ferritin heavy chain, N-terminally processed | ||||||
![]() | METAL BINDING PROTEIN / Protein standard | ||||||
機能・相同性 | ![]() iron ion sequestering activity / ferritin complex / Scavenging by Class A Receptors / negative regulation of ferroptosis / Golgi Associated Vesicle Biogenesis / ferroxidase / autolysosome / ferroxidase activity / negative regulation of fibroblast proliferation / ferric iron binding ...iron ion sequestering activity / ferritin complex / Scavenging by Class A Receptors / negative regulation of ferroptosis / Golgi Associated Vesicle Biogenesis / ferroxidase / autolysosome / ferroxidase activity / negative regulation of fibroblast proliferation / ferric iron binding / autophagosome / Iron uptake and transport / ferrous iron binding / iron ion transport / tertiary granule lumen / ficolin-1-rich granule lumen / intracellular iron ion homeostasis / immune response / iron ion binding / negative regulation of cell population proliferation / Neutrophil degranulation / extracellular exosome / extracellular region / identical protein binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 1.58 Å | ||||||
![]() | Clare, D.K. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Application of super-resolution and correlative double sampling in cryo-electron microscopy. 著者: Yuewen Sheng / Peter J Harrison / Vinod Vogirala / Zhengyi Yang / Claire Strain-Damerell / Thomas Frosio / Benjamin A Himes / C Alistair Siebert / Peijun Zhang / Daniel K Clare / ![]() ![]() 要旨: Developments in cryo-EM have allowed atomic or near-atomic resolution structure determination to become routine in single particle analysis (SPA). However, near-atomic resolution structures ...Developments in cryo-EM have allowed atomic or near-atomic resolution structure determination to become routine in single particle analysis (SPA). However, near-atomic resolution structures determined using cryo-electron tomography and sub-tomogram averaging (cryo-ET STA) are much less routine. In this paper, we show that collecting cryo-ET STA data using the same conditions as SPA, with both correlated double sampling (CDS) and the super-resolution mode, allowed apoferritin to be reconstructed out to the physical Nyquist frequency of the images. Even with just two tilt series, STA yields an apoferritin map at 2.9 Å resolution. These results highlight the exciting potential of cryo-ET STA in the future of protein structure determination. While processing SPA data recorded in super-resolution mode may yield structures surpassing the physical Nyquist limit, processing cryo-ET STA data in the super-resolution mode gave no additional resolution benefit. We further show that collecting SPA data in the super-resolution mode, with CDS activated, reduces the estimated -factor, leading to a reduction in the number of particles required to reach a target resolution without compromising the data size on disk and the area imaged in SerialEM. However, collecting SPA data in CDS does reduce throughput, given that a similar resolution structure, with a slightly larger -factor, is achievable with optimised parameters for speed in EPU (without CDS). | ||||||
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