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- EMDB-9886: human soluble guanylate cyclase H105C mutant -

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Basic information

Entry
Database: EMDB / ID: EMD-9886
Titlehuman soluble guanylate cyclase H105C mutant
Map datacomposite map after multibody refinement
Sample
  • Complex: human soluble guanylate cyclase
Function / homology
Function and homology information


retrograde trans-synaptic signaling by nitric oxide, modulating synaptic transmission / cytidylate cyclase activity / guanylate cyclase complex, soluble / guanylate cyclase / cGMP biosynthetic process / guanylate cyclase activity / presynaptic active zone cytoplasmic component / response to oxygen levels / nitric oxide binding / Nitric oxide stimulates guanylate cyclase ...retrograde trans-synaptic signaling by nitric oxide, modulating synaptic transmission / cytidylate cyclase activity / guanylate cyclase complex, soluble / guanylate cyclase / cGMP biosynthetic process / guanylate cyclase activity / presynaptic active zone cytoplasmic component / response to oxygen levels / nitric oxide binding / Nitric oxide stimulates guanylate cyclase / relaxation of vascular associated smooth muscle / adenylate cyclase activity / blood circulation / : / positive regulation of nitric oxide mediated signal transduction / nitric oxide mediated signal transduction / Smooth Muscle Contraction / nitric oxide-cGMP-mediated signaling / cellular response to nitric oxide / Hsp90 protein binding / GABA-ergic synapse / regulation of blood pressure / signaling receptor activity / heme binding / GTP binding / protein-containing complex binding / glutamatergic synapse / 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
Guanylate cyclase soluble subunit alpha-1 / Guanylate cyclase soluble subunit beta-1
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 6.8 Å
AuthorsChen L / Kang Y / Liu R / Wu J-X
Funding support China, 4 items
OrganizationGrant numberCountry
Ministry of Science and Technology (China)2016YFA0502004 China
National Natural Science Foundation of China31821091 China
National Natural Science Foundation of China31622021 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, 2019-
Header (metadata) releaseAug 28, 2019-
Map releaseAug 28, 2019-
UpdateMar 11, 2020-
Current statusMar 11, 2020Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_9886.png

Downloads & links

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Map

FileDownload / File: emd_9886.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationcomposite map after multibody refinement
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 240 pix.
= 250.8 Å		1.05 Å/pix.
x 240 pix.
= 250.8 Å		1.05 Å/pix.
x 240 pix.
= 250.8 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.045 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.03 / Movie #1: 0.03
Minimum - Maximum-0.029313613 - 0.12645991
Average (Standard dev.)0.00058338355 (±0.0047342037)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 250.79999 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0451.0451.045
M x/y/z240240240
origin x/y/z0.0000.0000.000
length x/y/z250.800250.800250.800
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ400400400
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS240240240
D min/max/mean-0.0290.1260.001

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Supplemental data

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Sample components

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Entire : human soluble guanylate cyclase

EntireName: human soluble guanylate cyclase
Components
  • Complex: human soluble guanylate cyclase

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Supramolecule #1: human soluble guanylate cyclase

SupramoleculeName: human soluble guanylate cyclase / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionResolution.type: BY AUTHOR / Resolution: 6.8 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 41710
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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