8ytc
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==PML-RBCC dimer== | |
| + | <StructureSection load='8ytc' size='340' side='right'caption='[[8ytc]], [[Resolution|resolution]] 5.30Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[8ytc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8YTC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8YTC FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 5.3Å</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8ytc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ytc OCA], [https://pdbe.org/8ytc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ytc RCSB], [https://www.ebi.ac.uk/pdbsum/8ytc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ytc ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Disease == | ||
| + | [https://www.uniprot.org/uniprot/PML_HUMAN PML_HUMAN] Note=A chromosomal aberration involving PML may be a cause of acute promyelocytic leukemia (APL). Translocation t(15;17)(q21;q21) with RARA. The PML breakpoints (type A and type B) lie on either side of an alternatively spliced exon.<ref>PMID:1652369</ref> <ref>PMID:1720570</ref> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/PML_HUMAN PML_HUMAN] Key component of PML nuclear bodies that regulate a large number of cellular processes by facilitating post-translational modification of target proteins, promoting protein-protein contacts, or by sequestering proteins. Functions as tumor suppressor. Required for normal, caspase-dependent apoptosis in response to DNA damage, FAS, TNF, or interferons. Plays a role in transcription regulation, DNA damage response, DNA repair and chromatin organization. Plays a role in processes regulated by retinoic acid, regulation of cell division, terminal differentiation of myeloid precursor cells and differentiation of neural progenitor cells. Required for normal immunity to microbial infections. Plays a role in antiviral response. In the cytoplasm, plays a role in TGFB1-dependent processes. Regulates p53/TP53 levels by inhibiting its ubiquitination and proteasomal degradation. Regulates activation of p53/TP53 via phosphorylation at 'Ser-20'. Sequesters MDM2 in the nucleolus after DNA damage, and thereby inhibits ubiquitination and degradation of p53/TP53. Regulates translation of HIF1A by sequestering MTOR, and thereby plays a role in neoangiogenesis and tumor vascularization. Regulates RB1 phosphorylation and activity. Required for normal development of the brain cortex during embryogenesis. Can sequester herpes virus and varicella virus proteins inside PML bodies, and thereby inhibit the formation of infectious viral particles. Regulates phosphorylation of ITPR3 and plays a role in the regulation of calcium homeostasis at the endoplasmic reticulum (By similarity). Regulates transcription activity of ELF4. Inhibits specifically the activity of the tetrameric form of PKM. Together with SATB1, involved in local chromatin-loop remodeling and gene expression regulation at the MHC-I locus. Regulates PTEN compartmentalization through the inhibition of USP7-mediated deubiquitination.<ref>PMID:9756909</ref> <ref>PMID:10610177</ref> <ref>PMID:10684855</ref> <ref>PMID:11025664</ref> <ref>PMID:11432836</ref> <ref>PMID:12402044</ref> <ref>PMID:12439746</ref> <ref>PMID:12810724</ref> <ref>PMID:14976184</ref> <ref>PMID:15195100</ref> <ref>PMID:15356634</ref> <ref>PMID:17030982</ref> <ref>PMID:18298799</ref> <ref>PMID:18716620</ref> <ref>PMID:17173041</ref> <ref>PMID:19567472</ref> <ref>PMID:21172801</ref> <ref>PMID:21304940</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | 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 A, 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 alpha3 helix, and the alpha6 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 microm membrane-less subcellular organelle. | ||
| - | + | Cryo-EM structure of PML RBCC dimer reveals CC-mediated octopus-like nuclear body assembly mechanism.,Tan Y, Li J, Zhang S, Zhang Y, Zhuo Z, Ma X, Yin Y, Jiang Y, Cong Y, Meng G Cell Discov. 2024 Nov 25;10(1):118. doi: 10.1038/s41421-024-00735-3. PMID:39587079<ref>PMID:39587079</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: Li | + | <div class="pdbe-citations 8ytc" style="background-color:#fffaf0;"></div> |
| - | [[Category: Tan | + | == References == |
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Homo sapiens]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Cong Y]] | ||
| + | [[Category: Li J]] | ||
| + | [[Category: Meng G]] | ||
| + | [[Category: Tan Y]] | ||
| + | [[Category: Zhang S]] | ||
| + | [[Category: Zhang Y]] | ||
Current revision
PML-RBCC dimer
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Categories: Homo sapiens | Large Structures | Cong Y | Li J | Meng G | Tan Y | Zhang S | Zhang Y
