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- PDB-6jt0: Structure of human soluble guanylate cyclase in the unliganded state -

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Basic information

Entry
Database: PDB / ID: 6jt0
TitleStructure of human soluble guanylate cyclase in the unliganded state
Components
  • Guanylate cyclase soluble subunit alpha-1
  • Guanylate cyclase soluble subunit beta-1
KeywordsSIGNALING PROTEIN / soluble guanylate cyclase
Function / homology
Function and homology information


retrograde trans-synaptic signaling by nitric oxide, modulating synaptic transmission / cytidylate cyclase activity / trans-synaptic signaling by nitric oxide, modulating synaptic transmission / guanylate cyclase complex, soluble / guanylate cyclase / cGMP biosynthetic process / guanylate cyclase activity / presynaptic active zone cytoplasmic component / response to oxygen levels / Nitric oxide stimulates guanylate cyclase ...retrograde trans-synaptic signaling by nitric oxide, modulating synaptic transmission / cytidylate cyclase activity / trans-synaptic signaling by nitric oxide, modulating synaptic transmission / guanylate cyclase complex, soluble / guanylate cyclase / cGMP biosynthetic process / guanylate cyclase activity / presynaptic active zone cytoplasmic component / response to oxygen levels / Nitric oxide stimulates guanylate cyclase / relaxation of vascular associated smooth muscle / adenylate cyclase activity / blood circulation / cGMP-mediated signaling / positive regulation of nitric oxide mediated signal transduction / Smooth Muscle Contraction / cellular response to nitric oxide / nitric oxide mediated signal transduction / GABA-ergic synapse / nitric oxide-cGMP-mediated signaling / Hsp90 protein binding / regulation of blood pressure / signaling receptor activity / glutamatergic synapse / heme binding / protein-containing complex binding / GTP binding / metal ion binding / cytosol
Similarity search - Function
Haem NO binding associated / Haem NO binding associated domain superfamily / Heme NO binding associated / Heme NO-binding / H-NOX domain superfamily / Haem-NO-binding / Adenylyl cyclase class-4/guanylyl cyclase, conserved site / Guanylate cyclase signature. / NO signalling/Golgi transport ligand-binding domain superfamily / Adenylyl- / guanylyl cyclase, catalytic domain ...Haem NO binding associated / Haem NO binding associated domain superfamily / Heme NO binding associated / Heme NO-binding / H-NOX domain superfamily / Haem-NO-binding / Adenylyl cyclase class-4/guanylyl cyclase, conserved site / Guanylate cyclase signature. / NO signalling/Golgi transport ligand-binding domain superfamily / Adenylyl- / guanylyl cyclase, catalytic domain / Adenylate and Guanylate cyclase catalytic domain / Adenylyl cyclase class-3/4/guanylyl cyclase / Guanylate cyclase domain profile. / Nucleotide cyclase
Similarity search - Domain/homology
PROTOPORPHYRIN IX CONTAINING FE / Guanylate cyclase soluble subunit alpha-1 / Guanylate cyclase soluble subunit beta-1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å
AuthorsChen, L. / Kang, Y. / Liu, R. / Wu, J.-X.
Funding support China, 4items
OrganizationGrant numberCountry
Ministry of Science and Technology (China)2016YFA0502004 China
National Natural Science Foundation of China31622021 China
National Natural Science Foundation of China31821091 China
National Natural Science Foundation of China31870833 China
CitationJournal: Nature / Year: 2019
Title: Structural insights into the mechanism of human soluble guanylate cyclase.
Authors: Yunlu Kang / Rui Liu / Jing-Xiang Wu / Lei Chen /
Abstract: Soluble guanylate cyclase (sGC) is the primary sensor of nitric oxide. It has a central role in nitric oxide signalling and has been implicated in many essential physiological processes and disease ...Soluble guanylate cyclase (sGC) is the primary sensor of nitric oxide. It has a central role in nitric oxide signalling and has been implicated in many essential physiological processes and disease conditions. The binding of nitric oxide boosts the enzymatic activity of sGC. However, the mechanism by which nitric oxide activates the enzyme is unclear. Here we report the cryo-electron microscopy structures of the human sGCα1β1 heterodimer in different functional states. These structures revealed that the transducer module bridges the nitric oxide sensor module and the catalytic module. Binding of nitric oxide to the β1 haem-nitric oxide and oxygen binding (H-NOX) domain triggers the structural rearrangement of the sensor module and a conformational switch of the transducer module from bending to straightening. The resulting movement of the N termini of the catalytic domains drives structural changes within the catalytic module, which in turn boost the enzymatic activity of sGC.
History
DepositionApr 8, 2019Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 28, 2019Provider: repository / Type: Initial release
Revision 1.1Oct 9, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.title / _citation.year / _citation_author.name
Revision 1.2Oct 16, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.3Oct 23, 2019Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.4Nov 6, 2019Group: Data collection / Other / Category: cell / Item: _cell.Z_PDB
Revision 1.5Mar 27, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Assembly

Deposited unit
A: Guanylate cyclase soluble subunit alpha-1
B: Guanylate cyclase soluble subunit beta-1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)148,7823
Polymers148,1662
Non-polymers6161
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area11560 Å2
ΔGint-104 kcal/mol
Surface area48970 Å2

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Components

#1: Protein Guanylate cyclase soluble subunit alpha-1 / GCS-alpha-1 / Guanylate cyclase soluble subunit alpha-3 / GCS-alpha-3 / Soluble guanylate cyclase ...GCS-alpha-1 / Guanylate cyclase soluble subunit alpha-3 / GCS-alpha-3 / Soluble guanylate cyclase large subunit


Mass: 77566.484 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: GenBank: AAH28384.1 / Source: (gene. exp.) Homo sapiens (human) / Gene: GUCY1A1, GUC1A3, GUCSA3, GUCY1A3 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q02108, guanylate cyclase
#2: Protein Guanylate cyclase soluble subunit beta-1 / GCS-beta-1 / Guanylate cyclase soluble subunit beta-3 / GCS-beta-3 / Soluble guanylate cyclase small subunit


Mass: 70599.320 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GUCY1B1, GUC1B3, GUCSB3, GUCY1B3 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q02153, guanylate cyclase
#3: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C34H32FeN4O4
Has ligand of interestN

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Experimental details

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Experiment

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

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Sample preparation

ComponentName: human soluble guanylate cyclase / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K2 QUANTUM (4k x 4k)

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Processing

EM softwareName: RELION / Version: 3 / Category: 3D reconstruction
CTF correctionType: NONE
3D reconstructionResolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 229111 / Symmetry type: POINT

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