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Open data
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Basic information
Entry | Database: PDB / ID: 7yz9 | ||||||||||||
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Title | Structure of catalytic domain of Rv1625c bound to nanobody NB4 | ||||||||||||
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Function / homology | ![]() receptor guanylyl cyclase signaling pathway / ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | ||||||||||||
Method | ![]() ![]() ![]() | ||||||||||||
![]() | Khanppnavar, B. / Mehta, V.J. / Iype, T. / Korkhov, V.M. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of Cya, an evolutionary ancestor of the mammalian membrane adenylyl cyclases. Authors: Ved Mehta / Basavraj Khanppnavar / Dina Schuster / Ilayda Kantarci / Irene Vercellino / Angela Kosturanova / Tarun Iype / Sasa Stefanic / Paola Picotti / Volodymyr M Korkhov / ![]() Abstract: adenylyl cyclase (AC) Rv1625c/Cya is an evolutionary ancestor of the mammalian membrane ACs and a model system for studies of their structure and function. Although the vital role of ACs in cellular ... adenylyl cyclase (AC) Rv1625c/Cya is an evolutionary ancestor of the mammalian membrane ACs and a model system for studies of their structure and function. Although the vital role of ACs in cellular signalling is well established, the function of their transmembrane (TM) regions remains unknown. Here, we describe the cryo-EM structure of Cya bound to a stabilizing nanobody at 3.6 Å resolution. The TM helices 1-5 form a structurally conserved domain that facilitates the assembly of the helical and catalytic domains. The TM region contains discrete pockets accessible from the extracellular and cytosolic side of the membrane. Neutralization of the negatively charged extracellular pocket Ex1 destabilizes the cytosolic helical domain and reduces the catalytic activity of the enzyme. The TM domain acts as a functional component of Cya, guiding the assembly of the catalytic domain and providing the means for direct regulation of catalytic activity in response to extracellular ligands. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 152 KB | Display | ![]() |
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PDB format | ![]() | 111.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 7yziC ![]() 7yzkC ![]() 4p2fS S: Starting model for refinement C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components on special symmetry positions |
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Components
-Protein / Antibody , 2 types, 2 molecules AB
#1: Protein | ![]() Mass: 28202.803 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Strain: ATCC 25618 / H37Rv / Gene: cya, Rv1625c, MTCY01B2.17c / Production host: ![]() ![]() ![]() ![]() |
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#2: Antibody | Mass: 13771.179 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() ![]() ![]() |
-Non-polymers , 4 types, 161 molecules ![](data/chem/img/MN.gif)
![](data/chem/img/GOL.gif)
![](data/chem/img/ONM.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/GOL.gif)
![](data/chem/img/ONM.gif)
![](data/chem/img/HOH.gif)
#3: Chemical | #4: Chemical | ![]() #5: Chemical | ChemComp-ONM / | #6: Water | ChemComp-HOH / | ![]() |
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-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.35 Å3/Da / Density % sol: 47.67 % |
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Crystal grow![]() | Temperature: 293.15 K / Method: vapor diffusion, sitting drop / pH: 5.5 / Details: 0.1 M Na-acetate pH 5.5, 0.02 M CaCl2, 30% MPD / PH range: 5.0-6.5 |
-Data collection
Diffraction | Mean temperature: 90 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Feb 1, 2020 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength![]() |
Reflection | Resolution: 1.97→47.4 Å / Num. obs: 774280 / % possible obs: 93.96 % / Redundancy: 35.9 % / Biso Wilson estimate: 44.58 Å2 / CC1/2: 1 / Rmerge(I) obs: 0.09 / Net I/σ(I): 25.4 |
Reflection shell | Resolution: 1.973→2.044 Å / Redundancy: 22.8 % / Rmerge(I) obs: 1.587 / Mean I/σ(I) obs: 1.5 / Num. unique obs: 1492 / CC1/2: 0.685 / % possible all: 66.85 |
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Processing
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Refinement | Method to determine structure![]() ![]() Starting model: 4P2F Resolution: 1.97→44.07 Å / SU ML: 0.272 / Cross valid method: FREE R-VALUE / σ(F): 1.37 / Phase error: 27.6644 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 58.38 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.97→44.07 Å
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Refine LS restraints |
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LS refinement shell |
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