[English] 日本語
Yorodumi
- PDB-7zl1: PTX3 Pentraxin Domain -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 7zl1
TitlePTX3 Pentraxin Domain
ComponentsPentraxin-related protein PTX3
KeywordsIMMUNE SYSTEM / PTX3 / Long pentraxin 3 / innate immunity
Function / homology
Function and homology information


(1->3)-beta-D-glucan binding / negative regulation by host of viral exo-alpha-sialidase activity / negative regulation by host of viral glycoprotein metabolic process / negative regulation of exo-alpha-sialidase activity / negative regulation of glycoprotein metabolic process / ovarian cumulus expansion / negative regulation by host of viral process / opsonization / complement component C1q complex binding / response to yeast ...(1->3)-beta-D-glucan binding / negative regulation by host of viral exo-alpha-sialidase activity / negative regulation by host of viral glycoprotein metabolic process / negative regulation of exo-alpha-sialidase activity / negative regulation of glycoprotein metabolic process / ovarian cumulus expansion / negative regulation by host of viral process / opsonization / complement component C1q complex binding / response to yeast / negative regulation of viral entry into host cell / virion binding / positive regulation of phagocytosis / extracellular matrix / extracellular matrix organization / specific granule lumen / positive regulation of nitric oxide biosynthetic process / tertiary granule lumen / inflammatory response / innate immune response / Neutrophil degranulation / extracellular space / extracellular region / identical protein binding
Similarity search - Function
Pentraxin-related protein PTX3 / LamG-like jellyroll fold / LamG-like jellyroll fold domain / Pentaxin, conserved site / Pentraxin domain signature. / Pentaxin family / Pentraxin / C-reactive protein / pentaxin family / Pentraxin-related / Pentraxin (PTX) domain profile. / Concanavalin A-like lectin/glucanase domain superfamily
Similarity search - Domain/homology
Pentraxin-related protein PTX3
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.5 Å
AuthorsNoone, D.P. / Sharp, T.H.
Funding supportEuropean Union, 1items
OrganizationGrant numberCountry
European Research Council (ERC)759517European Union
CitationJournal: Proc Natl Acad Sci U S A / Year: 2022
Title: PTX3 structure determination using a hybrid cryoelectron microscopy and AlphaFold approach offers insights into ligand binding and complement activation.
Authors: Dylan P Noone / Douwe J Dijkstra / Teun T van der Klugt / Peter A van Veelen / Arnoud H de Ru / Paul J Hensbergen / Leendert A Trouw / Thomas H Sharp /
Abstract: Pattern recognition molecules (PRMs) form an important part of innate immunity, where they facilitate the response to infections and damage by triggering processes such as inflammation. The pentraxin ...Pattern recognition molecules (PRMs) form an important part of innate immunity, where they facilitate the response to infections and damage by triggering processes such as inflammation. The pentraxin family of soluble PRMs comprises long and short pentraxins, with the former containing unique N-terminal regions unrelated to other proteins or each other. No complete high-resolution structural information exists about long pentraxins, unlike the short pentraxins, where there is an abundance of both X-ray and cryoelectron microscopy (cryo-EM)-derived structures. This study presents a high-resolution structure of the prototypical long pentraxin, PTX3. Cryo-EM yielded a 2.5-Å map of the C-terminal pentraxin domains that revealed a radically different quaternary structure compared to other pentraxins, comprising a glycosylated D4 symmetrical octameric complex stabilized by an extensive disulfide network. The cryo-EM map indicated α-helices that extended N terminal of the pentraxin domains that were not fully resolved. AlphaFold was used to predict the remaining N-terminal structure of the octameric PTX3 complex, revealing two long tetrameric coiled coils with two hinge regions, which was validated using classification of cryo-EM two-dimensional averages. The resulting hybrid cryo-EM/AlphaFold structure allowed mapping of ligand binding sites, such as C1q and fibroblast growth factor-2, as well as rationalization of previous biochemical data. Given the relevance of PTX3 in conditions ranging from COVID-19 prognosis, cancer progression, and female infertility, this structure could be used to inform the understanding and rational design of therapies for these disorders and processes.
History
DepositionApr 13, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 3, 2022Provider: repository / Type: Initial release
Revision 1.1Aug 17, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
B: Pentraxin-related protein PTX3
A: Pentraxin-related protein PTX3
D: Pentraxin-related protein PTX3
C: Pentraxin-related protein PTX3
E: Pentraxin-related protein PTX3
H: Pentraxin-related protein PTX3
G: Pentraxin-related protein PTX3
F: Pentraxin-related protein PTX3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)336,51316
Polymers334,7438
Non-polymers1,7708
Water6,828379
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, Both cryo and negative stain electron microscopy images of the assembly., gel filtration, Large complex found using size exclusion chromatography.
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area26300 Å2
ΔGint40 kcal/mol
Surface area64020 Å2
MethodPISA

-
Components

#1: Protein
Pentraxin-related protein PTX3 / Pentaxin-related protein PTX3 / Tumor necrosis factor alpha-induced protein 5 / TNF alpha-induced ...Pentaxin-related protein PTX3 / Tumor necrosis factor alpha-induced protein 5 / TNF alpha-induced protein 5 / Tumor necrosis factor-inducible gene 14 protein / TSG-14


Mass: 41842.914 Da / Num. of mol.: 8
Source method: isolated from a genetically manipulated source
Details: Pentraxin domain of the long pentraxin 3. No N-terminal domain is included in this coordinate file.
Source: (gene. exp.) Homo sapiens (human) / Gene: PTX3, TNFAIP5, TSG14 / Production host: Homo sapiens (human) / References: UniProt: P26022
#2: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 8
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 379 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: Long pentraxin 3 pentraxin domain / Type: COMPLEX
Details: CryoEM derived map of the pentraxin domains of PTX3. At higher isosurface threshold values the start of the coiled coil N-terminal domain can be seen.
Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.336 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMTris-HClTris1
2500 mMSodium chlorideNaClSodium chloride1
30.05 % (w/v)Tween-201
SpecimenConc.: 23 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: PTX3 at concentrations between 1-2 uM in 20 mM Tris-HCl, 500 mM NaCl, pH 8.0 was concentrated in a 50 kDa molecular weight cut-off spin filter to concentrations between 60-70 uM.
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 65 % / Chamber temperature: 277.15 K

-
Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 105000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 103.15 K / Temperature (min): 90.15 K
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 4612
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

-
Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategory
2EPUimage acquisition
4WarpCTF correction
7ISOLDEmodel fitting
9PHENIXmodel refinement
10RELION3.1initial Euler assignment
11RELION3.1final Euler assignment
12RELION3.1classification
13RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1360284
SymmetryPoint symmetry: D4 (2x4 fold dihedral)
3D reconstructionResolution: 2.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 276374 / Num. of class averages: 1 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00713624
ELECTRON MICROSCOPYf_angle_d0.86718496
ELECTRON MICROSCOPYf_dihedral_angle_d14.5994776
ELECTRON MICROSCOPYf_chiral_restr0.0562040
ELECTRON MICROSCOPYf_plane_restr0.012352

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
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

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • 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

Read more