positive regulation of vesicle transport along microtubule / intracellular protein-containing complex / Golgi localization / AMPK inhibits chREBP transcriptional activation activity / negative regulation of potassium ion transmembrane transport / dendrite extension / regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / negative regulation of epithelial cell proliferation involved in prostate gland development / response to thyroid hormone / activation of protein kinase activity ...positive regulation of vesicle transport along microtubule / intracellular protein-containing complex / Golgi localization / AMPK inhibits chREBP transcriptional activation activity / negative regulation of potassium ion transmembrane transport / dendrite extension / regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / negative regulation of epithelial cell proliferation involved in prostate gland development / response to thyroid hormone / activation of protein kinase activity / cellular hypotonic response / tissue homeostasis / Energy dependent regulation of mTOR by LKB1-AMPK / epithelial cell proliferation involved in prostate gland development / serine/threonine protein kinase complex / positive thymic T cell selection / vasculature development / positive regulation of axonogenesis / regulation of Wnt signaling pathway / anoikis / G1 to G0 transition / negative regulation of cold-induced thermogenesis / LRR domain binding / cellular response to UV-B / regulation of dendrite morphogenesis / response to ionizing radiation / establishment of cell polarity / positive regulation of transforming growth factor beta receptor signaling pathway / FOXO-mediated transcription of cell death genes / intrinsic apoptotic signaling pathway by p53 class mediator / protein kinase activator activity / peptidyl-threonine phosphorylation / positive regulation of protein serine/threonine kinase activity / protein localization to nucleus / protein dephosphorylation / negative regulation of TORC1 signaling / positive regulation of autophagy / axonogenesis / protein serine/threonine kinase binding / protein export from nucleus / protein serine/threonine kinase activator activity / regulation of signal transduction by p53 class mediator / response to activity / regulation of cell growth / negative regulation of canonical Wnt signaling pathway / negative regulation of cell growth / autophagy / positive regulation of protein localization to nucleus / kinase binding / Z disc / p53 binding / glucose homeostasis / T cell receptor signaling pathway / protein autophosphorylation / Regulation of TP53 Activity through Phosphorylation / spermatogenesis / secretory granule lumen / ficolin-1-rich granule lumen / protein phosphorylation / non-specific serine/threonine protein kinase / regulation of cell cycle / intracellular signal transduction / cilium / negative regulation of cell population proliferation / protein serine kinase activity / protein serine/threonine kinase activity / centrosome / DNA damage response / Neutrophil degranulation / magnesium ion binding / signal transduction / mitochondrion / extracellular exosome / extracellular region / nucleoplasm / ATP binding / nucleus / membrane / cytosol / cytoplasm 類似検索 - 分子機能
Serine/Threonine kinase LKB1, catalytic domain / : / Mo25-like / Mo25-like / Armadillo-like helical / Armadillo-type fold / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain ...Serine/Threonine kinase LKB1, catalytic domain / : / Mo25-like / Mo25-like / Armadillo-like helical / Armadillo-type fold / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性
ADENOSINE-5'-DIPHOSPHATE / Serine/threonine-protein kinase STK11 / STE20-related kinase adapter protein alpha / Calcium-binding protein 39 類似検索 - 構成要素
ジャーナル: J Struct Biol / 年: 2024 タイトル: High-resolution single-particle imaging at 100-200 keV with the Gatan Alpine direct electron detector. 著者: Lieza M Chan / Brandon J Courteau / Allison Maker / Mengyu Wu / Benjamin Basanta / Hev Mehmood / David Bulkley / David Joyce / Brian C Lee / Stephen Mick / Cory Czarnik / Sahil Gulati / ...著者: Lieza M Chan / Brandon J Courteau / Allison Maker / Mengyu Wu / Benjamin Basanta / Hev Mehmood / David Bulkley / David Joyce / Brian C Lee / Stephen Mick / Cory Czarnik / Sahil Gulati / Gabriel C Lander / Kliment A Verba / 要旨: Developments in direct electron detector technology have played a pivotal role in enabling high-resolution structural studies by cryo-EM at 200 and 300 keV. Yet, theory and recent experiments ...Developments in direct electron detector technology have played a pivotal role in enabling high-resolution structural studies by cryo-EM at 200 and 300 keV. Yet, theory and recent experiments indicate advantages to imaging at 100 keV, energies for which the current detectors have not been optimized. In this study, we evaluated the Gatan Alpine detector, designed for operation at 100 and 200 keV. Compared to the Gatan K3, Alpine demonstrated a significant DQE improvement at these energies, specifically a ∼ 4-fold improvement at Nyquist at 100 keV. In single-particle cryo-EM experiments, Alpine datasets yielded better than 2 Å resolution reconstructions of apoferritin at 120 and 200 keV on a ThermoFisher Scientific (TFS) Glacios microscope fitted with a non-standard SP-Twin lens. We also achieved a ∼ 3.2 Å resolution reconstruction of a 115 kDa asymmetric protein complex, proving Alpine's effectiveness with complex biological samples. In-depth analysis revealed that Alpine reconstructions are comparable to K3 reconstructions at 200 keV, and remarkably, reconstruction from Alpine at 120 keV on a TFS Glacios surpassed all but the 300 keV data from a TFS Titan Krios with GIF/K3. Additionally, we show Alpine's capability for high-resolution data acquisition and screening on lower-end systems by obtaining ∼ 3 Å resolution reconstructions of apoferritin and aldolase at 100 keV and detailed 2D averages of a 55 kDa sample using a side-entry cryo holder. Overall, we show that Gatan Alpine performs well with the standard 200 keV imaging systems and may potentially capture the benefits of lower accelerating voltages, bringing smaller sized particles within the scope of cryo-EM.
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