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Open data
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Basic information
Entry | Database: PDB / ID: 7xm8 | |||||||||||||||
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Title | Glucagon amyloid fibril | |||||||||||||||
![]() | Glucagon | |||||||||||||||
![]() | PROTEIN FIBRIL / amyloid / fibrils / glucagon | |||||||||||||||
Function / homology | ![]() glucagon receptor binding / negative regulation of execution phase of apoptosis / feeding behavior / positive regulation of calcium ion import / cellular response to glucagon stimulus / response to starvation / positive regulation of insulin secretion involved in cellular response to glucose stimulus / regulation of insulin secretion / Synthesis, secretion, and deacylation of Ghrelin / positive regulation of gluconeogenesis ...glucagon receptor binding / negative regulation of execution phase of apoptosis / feeding behavior / positive regulation of calcium ion import / cellular response to glucagon stimulus / response to starvation / positive regulation of insulin secretion involved in cellular response to glucose stimulus / regulation of insulin secretion / Synthesis, secretion, and deacylation of Ghrelin / positive regulation of gluconeogenesis / protein kinase A signaling / positive regulation of peptidyl-threonine phosphorylation / response to activity / gluconeogenesis / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / hormone activity / Glucagon signaling in metabolic regulation / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Glucagon-type ligand receptors / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / positive regulation of peptidyl-serine phosphorylation / glucose homeostasis / G alpha (s) signalling events / G alpha (q) signalling events / secretory granule lumen / positive regulation of ERK1 and ERK2 cascade / G protein-coupled receptor signaling pathway / endoplasmic reticulum lumen / signaling receptor binding / negative regulation of apoptotic process / extracellular space / extracellular region / identical protein binding / plasma membrane Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||||||||
![]() | Jeong, H. / Lin, Y. / Lee, Y.-H. | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Atomistic zipper-like amyloid structure of full-length glucagon Authors: Jeong, H. / Lee, Y. | |||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 119.4 KB | Display | ![]() |
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PDB format | ![]() | 97.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 25.6 KB | Display | |
Data in CIF | ![]() | 37.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 33290MC M: map data used to model this data 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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Components
#1: Protein/peptide | Mass: 3486.781 Da / Num. of mol.: 22 / Source method: obtained synthetically / Source: (synth.) ![]() |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Glucagon amyloid fibril / Type: COMPLEX Details: Glucagon (HSQGTFTSDYSKYLDSRRAQDFVQWLMNT; purity: >97%) was synthesized by Toray Industries (Tokyo, Japan) Entity ID: all / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 2.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Glucagon (HSQGTFTSDYSKYLDSRRAQDFVQWLMNT; purity: >97%) was synthesized by Toray Industries (Tokyo, Japan) |
Specimen support | Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
Vitrification | Cryogen name: ETHANE |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 20592 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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