[English] 日本語
Yorodumi
- PDB-8suw: E. coli SIR2-HerA complex (dodecamer SIR2 bound 4 protomers of HerA) -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 8suw
TitleE. coli SIR2-HerA complex (dodecamer SIR2 bound 4 protomers of HerA)
Components
  • Nucleoside triphosphate hydrolase
  • SIR2-like domain-containing protein
KeywordsIMMUNE SYSTEM / HerA / SIR2 / NADase / ATPase / Anti-phage
Function / homology
Function and homology information


Helicase HerA, central domain / Helicase HerA, central domain / SIR2-like domain / SIR2-like domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / Chem-AR6 / SIR2-like domain-containing protein / Nucleoside triphosphate hydrolase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.15 Å
AuthorsShen, Z.F. / Lin, Q.P. / Fu, T.M.
Funding support United States, 1items
OrganizationGrant numberCountry
Not funded United States
CitationJournal: Mol Cell / Year: 2023
Title: Assembly-mediated activation of the SIR2-HerA supramolecular complex for anti-phage defense.
Authors: Zhangfei Shen / Qingpeng Lin / Xiao-Yuan Yang / Elizabeth Fosuah / Tian-Min Fu /
Abstract: SIR2-HerA, a bacterial two-protein anti-phage defense system, induces bacterial death by depleting NAD upon phage infection. Biochemical reconstitution of SIR2, HerA, and the SIR2-HerA complex ...SIR2-HerA, a bacterial two-protein anti-phage defense system, induces bacterial death by depleting NAD upon phage infection. Biochemical reconstitution of SIR2, HerA, and the SIR2-HerA complex reveals a dynamic assembly process. Unlike other ATPases, HerA can form various oligomers, ranging from dimers to nonamers. When assembled with SIR2, HerA forms a hexamer and converts SIR2 from a nuclease to an NAD hydrolase, representing an unexpected regulatory mechanism mediated by protein assembly. Furthermore, high concentrations of ATP can inhibit NAD hydrolysis by the SIR2-HerA complex. Cryo-EM structures of the SIR2-HerA complex reveal a giant supramolecular assembly up to 1 MDa, with SIR2 as a dodecamer and HerA as a hexamer, crucial for anti-phage defense. Unexpectedly, the HerA hexamer resembles a spiral staircase and exhibits helicase activities toward dual-forked DNA. Together, we reveal the supramolecular assembly of SIR2-HerA as a unique mechanism for switching enzymatic activities and bolstering anti-phage defense strategies.
History
DepositionMay 13, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 27, 2024Provider: repository / Type: Initial release

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: SIR2-like domain-containing protein
B: SIR2-like domain-containing protein
C: SIR2-like domain-containing protein
D: SIR2-like domain-containing protein
E: SIR2-like domain-containing protein
F: SIR2-like domain-containing protein
G: SIR2-like domain-containing protein
H: SIR2-like domain-containing protein
I: SIR2-like domain-containing protein
J: SIR2-like domain-containing protein
K: SIR2-like domain-containing protein
L: SIR2-like domain-containing protein
M: Nucleoside triphosphate hydrolase
N: Nucleoside triphosphate hydrolase
O: Nucleoside triphosphate hydrolase
P: Nucleoside triphosphate hydrolase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)843,60634
Polymers835,54016
Non-polymers8,06618
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

-
Components

#1: Protein
SIR2-like domain-containing protein / Sir2


Mass: 46817.664 Da / Num. of mol.: 12
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: ERS139208_00135 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A7B5N0T7
#2: Protein
Nucleoside triphosphate hydrolase / HerA


Mass: 68431.992 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: ERS139208_00134 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A822U1Y5
#3: Chemical
ChemComp-AR6 / [(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXY-OXOLAN-2-YL]METHYL [HYDROXY-[[(2R,3S,4R,5S)-3,4,5-TRIHYDROXYOXOLAN-2-YL]METHOXY]PHOSPHORYL] HYDROGEN PHOSPHATE / Adenosine-5-Diphosphoribose


Mass: 559.316 Da / Num. of mol.: 12 / Source method: obtained synthetically / Formula: C15H23N5O14P2 / Feature type: SUBJECT OF INVESTIGATION
#4: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM
#5: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: SIR2-HerA complex(dodecomaer SIR2 bound with four protomers of HerA)
Type: COMPLEX / Details: dodecomaer SIR2 bound with four protomers of HerA / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Escherichia coli (E. coli)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

-
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 FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

-
Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.15 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 62864 / Symmetry type: POINT

+
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