[English] 日本語
Yorodumi
- PDB-7q4c: Local refinement structure of the C-domain of full-length, monome... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 7q4c
TitleLocal refinement structure of the C-domain of full-length, monomeric, soluble somatic angiotensin I-converting enzyme
ComponentsAngiotensin-converting enzyme
KeywordsHYDROLASE / Zinc metalloprotease Dicarboxypeptidase Glycoprotein
Function / homology
Function and homology information


mononuclear cell proliferation / cell proliferation in bone marrow / bradykinin receptor binding / exopeptidase activity / regulation of angiotensin metabolic process / substance P catabolic process / tripeptidyl-peptidase activity / peptidyl-dipeptidase A / regulation of renal output by angiotensin / negative regulation of gap junction assembly ...mononuclear cell proliferation / cell proliferation in bone marrow / bradykinin receptor binding / exopeptidase activity / regulation of angiotensin metabolic process / substance P catabolic process / tripeptidyl-peptidase activity / peptidyl-dipeptidase A / regulation of renal output by angiotensin / negative regulation of gap junction assembly / hormone catabolic process / bradykinin catabolic process / metallodipeptidase activity / regulation of smooth muscle cell migration / regulation of hematopoietic stem cell proliferation / neutrophil mediated immunity / hormone metabolic process / mitogen-activated protein kinase binding / mitogen-activated protein kinase kinase binding / chloride ion binding / arachidonate secretion / post-transcriptional regulation of gene expression / peptide catabolic process / heart contraction / antigen processing and presentation of peptide antigen via MHC class I / positive regulation of systemic arterial blood pressure / regulation of heart rate by cardiac conduction / regulation of systemic arterial blood pressure by renin-angiotensin / blood vessel remodeling / amyloid-beta metabolic process / hematopoietic stem cell differentiation / regulation of vasoconstriction / peptidyl-dipeptidase activity / Metabolism of Angiotensinogen to Angiotensins / angiotensin maturation / metallocarboxypeptidase activity / blood vessel diameter maintenance / angiotensin-activated signaling pathway / kidney development / regulation of synaptic plasticity / metalloendopeptidase activity / regulation of blood pressure / male gonad development / metallopeptidase activity / peptidase activity / actin binding / spermatogenesis / endopeptidase activity / calmodulin binding / lysosome / endosome / negative regulation of gene expression / external side of plasma membrane / proteolysis / extracellular space / extracellular exosome / extracellular region / zinc ion binding / plasma membrane
Similarity search - Function
Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme / Peptidase family M2 domain profile. / Neutral zinc metallopeptidases, zinc-binding region signature.
Similarity search - Domain/homology
Angiotensin-converting enzyme
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.08 Å
AuthorsLubbe, L. / Sewell, B.T. / Sturrock, E.D.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
UK Research and Innovation (UKRI)ST/R002754/1 United Kingdom
CitationJournal: EMBO J / Year: 2022
Title: Cryo-EM reveals mechanisms of angiotensin I-converting enzyme allostery and dimerization.
Authors: Lizelle Lubbe / Bryan Trevor Sewell / Jeremy D Woodward / Edward D Sturrock /
Abstract: Hypertension (high blood pressure) is a major risk factor for cardiovascular disease, which is the leading cause of death worldwide. The somatic isoform of angiotensin I-converting enzyme (sACE) ...Hypertension (high blood pressure) is a major risk factor for cardiovascular disease, which is the leading cause of death worldwide. The somatic isoform of angiotensin I-converting enzyme (sACE) plays a critical role in blood pressure regulation, and ACE inhibitors are thus widely used to treat hypertension and cardiovascular disease. Our current understanding of sACE structure, dynamics, function, and inhibition has been limited because truncated, minimally glycosylated forms of sACE are typically used for X-ray crystallography and molecular dynamics simulations. Here, we report the first cryo-EM structures of full-length, glycosylated, soluble sACE (sACE ). Both monomeric and dimeric forms of the highly flexible apo enzyme were reconstructed from a single dataset. The N- and C-terminal domains of monomeric sACE were resolved at 3.7 and 4.1 Å, respectively, while the interacting N-terminal domains responsible for dimer formation were resolved at 3.8 Å. Mechanisms are proposed for intradomain hinging, cooperativity, and homodimerization. Furthermore, the observation that both domains were in the open conformation has implications for the design of sACE modulators.
History
DepositionOct 30, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 20, 2022Provider: repository / Type: Initial release
Revision 1.1Jul 27, 2022Group: Database references / Category: citation / citation_author
Item: _citation.page_first / _citation.page_last ..._citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Aug 24, 2022Group: Database references / Category: citation / Item: _citation.journal_volume
Revision 1.3Nov 13, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Angiotensin-converting enzyme
hetero molecules


Theoretical massNumber of molelcules
Total (without water)141,6897
Polymers139,6141
Non-polymers2,0756
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area2300 Å2
ΔGint16 kcal/mol
Surface area26990 Å2

-
Components

#1: Protein Angiotensin-converting enzyme / ACE / Dipeptidyl carboxypeptidase I / Kininase II


Mass: 139614.000 Da / Num. of mol.: 1 / Mutation: P576L
Source method: isolated from a genetically manipulated source
Details: Soluble secreted form of human somatic angiotensin I-converting enzyme terminating at Ser1211,Soluble secreted form of human somatic angiotensin I-converting enzyme terminating at Ser1211
Source: (gene. exp.) Homo sapiens (human) / Gene: ACE, DCP, DCP1 / Plasmid: pcDNA3.1+ / Cell line (production host): CHO-K1 / Production host: Cricetulus griseus (Chinese hamster)
References: UniProt: P12821, Hydrolases; Glycosylases; Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds, peptidyl-dipeptidase A
#2: Polysaccharide alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c6-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#3: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#4: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl / Feature type: SUBJECT OF INVESTIGATION
#5: 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


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 2 / Source method: obtained synthetically / 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
Has ligand of interestY
Has protein modificationY

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: Full-length, soluble, monomeric somatic angiotensin I-converting enzyme
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.139 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Cricetulus griseus (Chinese hamster) / Plasmid: pcDNA3.1+
Buffer solutionpH: 7.5 / Details: Solutions were prepared with deionized water
Buffer component
IDConc.NameFormulaBuffer-ID
1125 mMsodium chlorideNaCl1
20.01 mMzinc chlorideZnCl21
350 mMHEPESC8H18N2O4S1
SpecimenConc.: 1.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: The protein was stored at 3.0mg/ml in 50mM HEPES (pH 7.5) and diluted immediately prior to grid preparation
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K
Details: Diluted protein (in buffer containing zinc chloride and sodium chloride) was incubated on ice for 30 minutes after which it was applied to the grid, incubated for 30 seconds, and blotted for ...Details: Diluted protein (in buffer containing zinc chloride and sodium chloride) was incubated on ice for 30 minutes after which it was applied to the grid, incubated for 30 seconds, and blotted for 3 seconds before plunging

-
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 magnification: 81000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1800 nm / Cs: 2.7 mm
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 3 sec. / Electron dose: 43 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 11628
Details: Images were recorded in super-resolution mode with 40 frames per image
Image scansWidth: 5760 / Height: 4092

-
Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.19.2_4158refinement
PHENIX1.19.2_4158refinement
EM software
IDNameVersionCategoryDetails
1Topaz0.2.5particle selection
2EPUimage acquisition
4cryoSPARC3.2CTF correctionpatch-based CTF estimation
7ISOLDE1.2.0model fitting
9PHENIX1.19.2model refinement
10cryoSPARC3.2initial Euler assignment
11cryoSPARC3.2final Euler assignment
12RELION3.1classification
13cryoSPARC3.23D reconstruction
CTF correctionDetails: cryoSPARC patch-based CTF estimation / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1727045
Details: Topaz-denoising was performed on all curated micrographs, a Topaz model trained on this dataset, and used for picking
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.08 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 42701 / Details: Local refinement with a mask around the C-domain / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL / Target criteria: Correlation coefficient
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 51.78 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00715045
ELECTRON MICROSCOPYf_angle_d0.8716861
ELECTRON MICROSCOPYf_chiral_restr0.0499749
ELECTRON MICROSCOPYf_plane_restr0.0101872
ELECTRON MICROSCOPYf_dihedral_angle_d13.64121862

+
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