- EMDB-17251: Structure of apo telomeric nucleosome -
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基本情報
登録情報
データベース: EMDB / ID: EMD-17251
タイトル
Structure of apo telomeric nucleosome
マップデータ
Postprocess map of Apo-TeloNCP
試料
複合体: TRF1core in complex with telomeric nucleosome
複合体: Human telomeric nucleosome
タンパク質・ペプチド: Histone H3.1
タンパク質・ペプチド: Histone H4
タンパク質・ペプチド: Histone H2A type 1-C
タンパク質・ペプチド: Histone H2B type 1-C/E/F/G/I
DNA: Telomeric DNA G strand
DNA: Telomeric DNA C strand
リガンド: water
キーワード
Telomeric nucleosome / shelterin / telomere / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine ...negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Deposition of new CENPA-containing nucleosomes at the centromere / telomere organization / Inhibition of DNA recombination at telomere / Meiotic synapsis / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / innate immune response in mucosa / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / epigenetic regulation of gene expression / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / HDMs demethylate histones / NoRC negatively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / Metalloprotease DUBs / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / antimicrobial humoral immune response mediated by antimicrobial peptide / structural constituent of chromatin / antibacterial humoral response / UCH proteinases / nucleosome / heterochromatin formation / E3 ubiquitin ligases ubiquitinate target proteins / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Factors involved in megakaryocyte development and platelet production / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / gene expression / Estrogen-dependent gene expression / chromosome, telomeric region / defense response to Gram-positive bacterium / Ub-specific processing proteases / cadherin binding / Amyloid fiber formation / protein heterodimerization activity / negative regulation of cell population proliferation / protein-containing complex / DNA binding / extracellular space / RNA binding / extracellular exosome / extracellular region / nucleoplasm / identical protein binding / nucleus / membrane / cytosol 類似検索 - 分子機能
ジャーナル: Sci Adv / 年: 2023 タイトル: Structural basis of telomeric nucleosome recognition by shelterin factor TRF1. 著者: Hongmiao Hu / Anne-Marie M van Roon / George E Ghanim / Bilal Ahsan / Abraham O Oluwole / Sew-Yeu Peak-Chew / Carol V Robinson / Thi Hoang Duong Nguyen / 要旨: Shelterin and nucleosomes are the key players that organize mammalian chromosome ends into the protective telomere caps. However, how they interact with each other at telomeres remains unknown. We ...Shelterin and nucleosomes are the key players that organize mammalian chromosome ends into the protective telomere caps. However, how they interact with each other at telomeres remains unknown. We report cryo-electron microscopy structures of a human telomeric nucleosome both unbound and bound to the shelterin factor TRF1. Our structures reveal that TRF1 binds unwrapped nucleosomal DNA ends by engaging both the nucleosomal DNA and the histone octamer. Unexpectedly, TRF1 binding shifts the register of the nucleosomal DNA by 1 bp. We discovered that phosphorylation of the TRF1 C terminus and a noncanomical DNA binding surface on TRF1 are critical for its association with telomeric nucleosomes. These insights into shelterin-chromatin interactions have crucial implications for understanding telomeric chromatin organization and other roles of shelterin at telomeres including replication and transcription.
全体 : TRF1core in complex with telomeric nucleosome
全体
名称: TRF1core in complex with telomeric nucleosome
要素
複合体: TRF1core in complex with telomeric nucleosome
複合体: Human telomeric nucleosome
タンパク質・ペプチド: Histone H3.1
タンパク質・ペプチド: Histone H4
タンパク質・ペプチド: Histone H2A type 1-C
タンパク質・ペプチド: Histone H2B type 1-C/E/F/G/I
DNA: Telomeric DNA G strand
DNA: Telomeric DNA C strand
リガンド: water
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超分子 #1: TRF1core in complex with telomeric nucleosome
超分子
名称: TRF1core in complex with telomeric nucleosome / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#6
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超分子 #2: Human telomeric nucleosome
超分子
名称: Human telomeric nucleosome / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1-#6 詳細: Human telomeric nucleosome with 145 bp DNA and human histone octamer. 145 bp DNA consists of 23 copies of TTAGGG repeats. Histone octamer consists of 2 copies of H2A, H2B, H3 and H4