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 / positive regulation of apoptotic process involved in mammary gland involution / SMAD protein signal transduction / fibroblast migration ...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 / positive regulation of apoptotic process involved in mammary gland involution / SMAD protein signal transduction / fibroblast migration / myeloid cell differentiation / protein-containing complex localization / maintenance of protein location in nucleus / endoplasmic reticulum calcium ion homeostasis / regulation of double-strand break repair / branching involved in mammary gland duct morphogenesis / oncogene-induced cell senescence / negative regulation of mitotic cell cycle / 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 / Regulation of RUNX1 Expression and 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 / entrainment of circadian clock by photoperiod / SUMOylation of ubiquitinylation proteins / SMAD binding / negative regulation of telomere maintenance via telomerase / positive regulation of telomere maintenance / protein sumoylation / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / cell fate commitment / negative regulation of ubiquitin-dependent protein catabolic process / positive regulation of signal transduction by p53 class mediator / regulation of cell adhesion / SUMOylation of DNA damage response and repair proteins / protein targeting / response to UV / retinoic acid receptor signaling pathway / Regulation of TP53 Activity through Acetylation / extrinsic apoptotic signaling pathway / positive regulation of defense response to virus by host / response to cytokine / transforming growth factor beta receptor signaling pathway / cellular response to interleukin-4 / Regulation of PTEN localization / 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 / negative regulation of cell growth / regulation of circadian rhythm / PML body / nuclear matrix / positive regulation of fibroblast proliferation / Transcriptional regulation of granulopoiesis / intrinsic apoptotic signaling pathway in response to DNA damage / Interferon gamma signaling / protein import into nucleus / HCMV Early Events / cellular senescence / protein-containing complex assembly / early endosome membrane / nuclear membrane / molecular adaptor activity / 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 / regulation of DNA-templated transcription / endoplasmic reticulum membrane / 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.