- EMDB-72472: Human nucleosome structure on Nickel-NTA lipid affinity grid (C2 ... -
+
Open data
ID or keywords:
Loading...
-
Basic information
Entry
Database: EMDB / ID: EMD-72472
Title
Human nucleosome structure on Nickel-NTA lipid affinity grid (C2 refinement)
Map data
B-factor sharpened map
Sample
Complex: Human nucleosome core particle
Protein or peptide: Histone H3.2
Protein or peptide: Histone H4
Protein or peptide: Histone H2A type 1
Protein or peptide: Histone H2B type 1-C/E/F/G/I
DNA: Nucleosomal DNA - 185 bp
DNA: Nucleosomal DNA - 185 bp
Keywords
Nucleosome / chromatin / DNA / DNA BINDING PROTEIN
Function / homology
Function and homology information
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 / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected 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 / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere organization / Interleukin-7 signaling / Inhibition of DNA recombination at telomere / RNA Polymerase I Promoter Opening / Meiotic synapsis / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / innate immune response in mucosa / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / HDACs deacetylate histones / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / HDMs demethylate histones / G2/M DNA damage checkpoint / 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 / UCH proteinases / antibacterial humoral response / nucleosome / heterochromatin formation / nucleosome assembly / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Factors involved in megakaryocyte development and platelet production / chromatin organization / 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 / Amyloid fiber formation / protein heterodimerization activity / chromatin binding / enzyme binding / negative regulation of transcription by RNA polymerase II / protein-containing complex / extracellular space / DNA binding / RNA binding / extracellular exosome / extracellular region / nucleoplasm / identical protein binding / nucleus / membrane / cytosol Similarity search - Function
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35 GM150960
United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35 GM133498
United States
National Institutes of Health/National Cancer Institute (NIH/NCI)
P30CA016086
United States
Citation
Journal: J Struct Biol / Year: 2025 Title: Nickel-NTA lipid-monolayer affinity grids allow for high-resolution structure determination by cryo-EM. Authors: Aleksandra Skrajna / Clara Lenger / Emily Robinson / Kevin Cannon / Reta Sarsam / Richard G Ouellette / Alberta M Abotsi / Patrick Brennwald / Robert K McGinty / Joshua D Strauss / Richard W Baker / Abstract: Grid preparation is a rate-limiting step in determining high-resolution structures by single particle cryo-EM. Particle interaction with the air-water interface often leads to denaturation, ...Grid preparation is a rate-limiting step in determining high-resolution structures by single particle cryo-EM. Particle interaction with the air-water interface often leads to denaturation, aggregation, or a preferred orientation within the ice. Some samples yield insufficient quantities of particles when using traditional grid making techniques and require the use of solid supports that concentrate samples onto the grid. Recent advances in grid-preparation show that affinity grids are promising tools to selectively concentrate proteins while simultaneously protecting samples from the air-water interface. One such technique utilizes lipid monolayers containing a lipid species with an affinity handle. Some of the first affinity grids used a holey carbon layer coated with nickel nitrilotriacetic acid (Ni-NTA) lipid, which allowed for the binding of proteins bearing the commonly used poly-histidine affinity tag. These studies however used complicated protocols and were conducted before the "resolution revolution" of cryo-EM. Here, we provide a straightforward preparation method and systematic analysis of Ni-NTA lipid monolayers as a tool for high-resolution single particle cryo-EM. We found the lipid affinity grids concentrate particles away from the AWI in thin ice (∼30 nm). We determined three structures ranging from 2.4 to 3.0 Å resolution, showing this method is amenable to high-resolution. Furthermore, we determined a 3.1 Å structure of a sub-100 kDa protein without symmetry, demonstrating the utility for a range of biological macromolecules. Lipid monolayers are therefore an easily extendable tool for most systems and help alleviate common problems such as low yield, disruption by the air-water interface, and thicker ice.
Name: Histone H2A type 1 / type: protein_or_peptide / ID: 3 / Details: human H2A.D with an N-terminal FLAG and HIS tag / Number of copies: 2 / Enantiomer: LEVO
Model: Quantifoil / Support film - Material: CARBON
Vitrification
Cryogen name: ETHANE-PROPANE
Details
Human nucleosome core particle [Flag-His-tagged H2A (hH2A.D), H2B (hH2B.C), H3 (hH3.2), and H4 (hH4)] with a 185 bp 601 nucleosome positioning DNA sequence
-
Electron microscopy
Microscope
TFS TALOS
Details
Beam tilt compensation enabled and calibrated using SerialEM
Image recording
Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beam
Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
In the structure databanks used in Yorodumi, some data are registered as the other names, "COVID-19 virus" and "2019-nCoV". Here are the details of the virus and the list of structure data.
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)
EMDB accession codes are about to change! (news from PDBe EMDB page)
The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
The EM Navigator/Yorodumi systems omit the EMD- prefix.
Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator
Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.
Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi