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Yorodumi- PDB-8z3s: Activation mechanism and novel binding site of the BKCa channel a... -
+Open data
-Basic information
Entry | Database: PDB / ID: 8z3s | ||||||||||||
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Title | Activation mechanism and novel binding site of the BKCa channel activator CTIBD | ||||||||||||
Components | Calcium-activated potassium channel subunit alpha-1 | ||||||||||||
Keywords | MEMBRANE PROTEIN / BKca channel / Slo1 / CTIBD | ||||||||||||
Function / homology | Function and homology information Acetylcholine inhibits contraction of outer hair cells / micturition / Ca2+ activated K+ channels / response to carbon monoxide / large conductance calcium-activated potassium channel activity / calcium-activated potassium channel activity / negative regulation of cell volume / smooth muscle contraction involved in micturition / intracellular potassium ion homeostasis / Sensory processing of sound by inner hair cells of the cochlea ...Acetylcholine inhibits contraction of outer hair cells / micturition / Ca2+ activated K+ channels / response to carbon monoxide / large conductance calcium-activated potassium channel activity / calcium-activated potassium channel activity / negative regulation of cell volume / smooth muscle contraction involved in micturition / intracellular potassium ion homeostasis / Sensory processing of sound by inner hair cells of the cochlea / response to osmotic stress / cGMP effects / voltage-gated potassium channel activity / voltage-gated potassium channel complex / potassium ion transmembrane transport / caveola / regulation of membrane potential / potassium ion transport / response to calcium ion / vasodilation / actin binding / postsynaptic membrane / response to hypoxia / positive regulation of apoptotic process / apical plasma membrane / identical protein binding / membrane / metal ion binding / plasma membrane Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | ||||||||||||
Authors | Lee, N. / Kim, S. / Jo, H. / Lee, N.Y. / Jin, M.S. / Park, C.S. | ||||||||||||
Funding support | Korea, Republic Of, 3items
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Citation | Journal: To Be Published Title: Activation mechanism and novel binding site of the BKCa channel activator CTIBD Authors: Lee, N. / Kim, S. / Jo, H. / Lee, N.Y. / Jeong, P. / Pagire, H.S. / Pagire, S.H. / Ahn, J.H. / Jin, M.S. / Park, C.S. | ||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8z3s.cif.gz | 652.5 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8z3s.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 8z3s.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8z3s_validation.pdf.gz | 1.8 MB | Display | wwPDB validaton report |
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Full document | 8z3s_full_validation.pdf.gz | 1.9 MB | Display | |
Data in XML | 8z3s_validation.xml.gz | 100.9 KB | Display | |
Data in CIF | 8z3s_validation.cif.gz | 149 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/z3/8z3s ftp://data.pdbj.org/pub/pdb/validation_reports/z3/8z3s | HTTPS FTP |
-Related structure data
Related structure data | 39753MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 125541.461 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: KCNMA1, KCNMA, SLO / Cell line (production host): HEK293S GnTi / Production host: Homo sapiens (human) / References: UniProt: Q12791 #2: Chemical | ChemComp-A1L04 / Mass: 355.696 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C16H9ClF3NO3 / Feature type: SUBJECT OF INVESTIGATION #3: Chemical | ChemComp-Y01 / #4: Chemical | ChemComp-MG / #5: Chemical | ChemComp-CA / Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Calcium-activated potassium channel subunit alpha-1 (Slo1) Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT | ||||||||||||||||||||||||||||||||||||||||
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Molecular weight | Value: 0.5 MDa / Experimental value: YES | ||||||||||||||||||||||||||||||||||||||||
Source (natural) | Organism: Homo sapiens (human) | ||||||||||||||||||||||||||||||||||||||||
Source (recombinant) | Organism: Homo sapiens (human) / Cell: HEK293S GnTi / Plasmid: pEG Bacman | ||||||||||||||||||||||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 5.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 278 K |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 73000 X / Nominal defocus max: 2600 nm / Nominal defocus min: 1400 nm / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Average exposure time: 13.67 sec. / Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 4806 |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 700885 | |||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C4 (4 fold cyclic) | |||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 288878 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT | |||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6V38 Accession code: 6V38 / Source name: PDB / Type: experimental model | |||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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