regulation of calcium ion transport into cytosol / ubiquitin-like protein ligase activity / negative regulation of translation in response to oxidative stress / positive regulation of protein localization to chromosome, telomeric region / suppression of viral release by host / PML body organization / SUMO binding / fibroblast migration / positive regulation of apoptotic process involved in mammary gland involution / SMAD protein signal transduction ...regulation of calcium ion transport into cytosol / ubiquitin-like protein ligase activity / negative regulation of translation in response to oxidative stress / positive regulation of protein localization to chromosome, telomeric region / suppression of viral release by host / PML body organization / SUMO binding / fibroblast migration / positive regulation of apoptotic process involved in mammary gland involution / SMAD protein signal transduction / myeloid cell differentiation / protein-containing complex localization / maintenance of protein location in nucleus / regulation of double-strand break repair / endoplasmic reticulum calcium ion homeostasis / branching involved in mammary gland duct morphogenesis / oncogene-induced cell senescence / Regulation of RUNX1 Expression and Activity / 転移酵素; アシル基を移すもの; アミノアシル基を移すもの / SUMO transferase activity / positive regulation of extrinsic apoptotic signaling pathway / cobalt ion binding / intrinsic apoptotic signaling pathway in response to oxidative stress / negative regulation of interleukin-1 beta production / SUMOylation of ubiquitinylation proteins / entrainment of circadian clock by photoperiod / SMAD binding / negative regulation of telomere maintenance via telomerase / positive regulation of telomere maintenance / negative regulation of mitotic cell cycle / protein sumoylation / negative regulation of ubiquitin-dependent protein catabolic process / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / positive regulation of signal transduction by p53 class mediator / cell fate commitment / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / protein targeting / SUMOylation of DNA damage response and repair proteins / regulation of cell adhesion / response to UV / retinoic acid receptor signaling pathway / Regulation of PTEN localization / extrinsic apoptotic signaling pathway / Regulation of TP53 Activity through Acetylation / positive regulation of defense response to virus by host / response to cytokine / transforming growth factor beta receptor signaling pathway / cellular response to interleukin-4 / negative regulation of angiogenesis / cellular response to leukemia inhibitory factor / response to gamma radiation / DNA damage response, signal transduction by p53 class mediator / circadian regulation of gene expression / regulation of circadian rhythm / negative regulation of cell growth / PML body / nuclear matrix / Transcriptional regulation of granulopoiesis / HCMV Early Events / positive regulation of fibroblast proliferation / Interferon gamma signaling / intrinsic apoptotic signaling pathway in response to DNA damage / protein import into nucleus / cellular senescence / protein-containing complex assembly / early endosome membrane / molecular adaptor activity / nuclear membrane / proteasome-mediated ubiquitin-dependent protein catabolic process / response to hypoxia / transcription coactivator activity / chromosome, telomeric region / regulation of cell cycle / protein stabilization / chromatin remodeling / protein heterodimerization activity / negative regulation of cell population proliferation / innate immune response / negative regulation of DNA-templated transcription / apoptotic process / ubiquitin protein ligase binding / endoplasmic reticulum membrane / regulation of DNA-templated transcription / nucleolus / protein homodimerization activity / DNA binding / zinc ion binding / nucleoplasm / identical protein binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
National Natural Science Foundation of China (NSFC)
20152504
中国
引用
ジャーナル: Cell Discov / 年: 2024 タイトル: Cryo-EM structure of PML RBCC dimer reveals CC-mediated octopus-like nuclear body assembly mechanism. 著者: Yangxia Tan / Jiawei Li / Shiyan Zhang / Yonglei Zhang / Zhiyi Zhuo / Xiaodan Ma / Yue Yin / Yanling Jiang / Yao Cong / Guoyu Meng / 要旨: Promyelocytic leukemia protein (PML) nuclear bodies (NBs) are essential in regulating tumor suppression, antiviral response, inflammation, metabolism, aging, and other important life processes. The ...Promyelocytic leukemia protein (PML) nuclear bodies (NBs) are essential in regulating tumor suppression, antiviral response, inflammation, metabolism, aging, and other important life processes. The re-assembly of PML NBs might lead to an ~100% cure of acute promyelocytic leukemia. However, until now, the molecular mechanism underpinning PML NB biogenesis remains elusive due to the lack of structural information. In this study, we present the cryo-electron microscopy (cryo-EM) structure of the PML dimer at an overall resolution of 5.3 Å, encompassing the RING, B-box1/2 and part of the coiled-coil (RBCC) domains. The integrated approach, combining crosslinking and mass spectrometry (XL-MS) and functional analyses, enabled us to observe a unique folding event within the RBCC domains. The RING and B-box1/2 domains fold around the α3 helix, and the α6 helix serves as a pivotal interface for PML dimerization. More importantly, further characterizations of the cryo-EM structure in conjugation with AlphaFold2 prediction, XL-MS, and NB formation assays, help unveil an unprecedented octopus-like mechanism in NB assembly, wherein each CC helix of a PML dimer (PML dimer A) interacts with a CC helix from a neighboring PML dimer (PML dimer B) in an anti-parallel configuration, ultimately leading to the formation of a 2 µm membrane-less subcellular organelle.