[English] 日本語
Yorodumi
- PDB-7u58: YcaO-mediated ATP-dependent peptidase activity in ribosomal pepti... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 7u58
TitleYcaO-mediated ATP-dependent peptidase activity in ribosomal peptide biosynthesis
ComponentsMusD
KeywordsHYDROLASE / Ripps / Ycao domain / musD / Cyanobactin
Function / homologyBacteriocin biosynthesis, cyclodehydratase domain / Thiazole/oxazole-forming peptide maturase, SagD family component / YcaO-like domain / YcaO cyclodehydratase, ATP-ad Mg2+-binding / YcaO domain profile. / ubiquitin-like modifier activating enzyme activity / Ubiquitin-activating enzyme / MusD
Function and homology information
Biological speciesDesmonostoc sp. PCC 7906 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsZheng, Y. / Nair, S.K.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01 GM079038 United States
CitationJournal: Nat Chem Biol / Year: 2023
Title: YcaO-mediated ATP-dependent peptidase activity in ribosomal peptide biosynthesis.
Authors: Yiwu Zheng / Satish K Nair /
Abstract: YcaO enzymes catalyze ATP-dependent post-translation modifications on peptides, including the installation of (ox/thi)azoline, thioamide and/or amidine moieties. Here we demonstrate that, in the ...YcaO enzymes catalyze ATP-dependent post-translation modifications on peptides, including the installation of (ox/thi)azoline, thioamide and/or amidine moieties. Here we demonstrate that, in the biosynthesis of the bis-methyloxazolic alkaloid muscoride A, the YcaO enzyme MusD carries out both ATP-dependent cyclodehydration and peptide bond cleavage, which is a mechanism unprecedented for such a reaction. YcaO-catalyzed modifications are proposed to occur through a backbone O-phosphorylated intermediate, but this mechanism remains speculative. We report, to our knowedge, the first characterization of an acyl-phosphate species consistent with the proposed mechanism for backbone amide activation. The 3.1-Å-resolution cryogenic electron microscopy structure of MusD along with biochemical analysis allow identification of residues that enable peptide cleavage reaction. Bioinformatics analysis identifies other cyanobactin pathways that may deploy bifunctional YcaO enzymes. Our structural, mutational and mechanistic studies expand the scope of modifications catalyzed by YcaO proteins to include peptide hydrolysis and provide evidence for a unifying mechanism for the catalytically diverse outcomes.
History
DepositionMar 1, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 2, 2022Provider: repository / Type: Initial release
Revision 1.1Jan 11, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.year / _citation_author.identifier_ORCID

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: MusD
B: MusD
hetero molecules


Theoretical massNumber of molelcules
Total (without water)177,9188
Polymers177,6902
Non-polymers2286
Water0
1


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

-
Components

#1: Protein MusD


Mass: 88844.805 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Desmonostoc sp. PCC 7906 (bacteria) / Strain: PCC 7906 / Gene: musD / Production host: Escherichia coli (E. coli) / References: UniProt: A0A5Q0TWV7
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#3: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
Has ligand of interestN

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: 2D ARRAY / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: MusD / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 88.76 kDa/nm / Experimental value: NO
Source (natural)Organism: Desmonostoc sp. PCC 7906 (bacteria)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5 / Details: HEPES pH 7.5. 25 mM KCl.
SpecimenConc.: 6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER
VitrificationCryogen name: ETHANE-PROPANE

-
Electron microscopy imaging

MicroscopyModel: FEI TITAN
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: DIFFRACTION / Nominal defocus max: 2000 nm / Nominal defocus min: 600 nm
Image recordingElectron dose: 1.33 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

-
Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 123786 / 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