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Yorodumi- PDB-6b3q: Cryo-EM structure of human insulin degrading enzyme in complex wi... -
+Open data
-Basic information
Entry | Database: PDB / ID: 6b3q | |||||||||||||||
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Title | Cryo-EM structure of human insulin degrading enzyme in complex with insulin | |||||||||||||||
Components |
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Keywords | HYDROLASE/HORMONE / IDE / insulin degrading enzyme / amyloid beta / HYDROLASE-HORMONE complex | |||||||||||||||
Function / homology | Function and homology information insulysin / ubiquitin recycling / insulin catabolic process / insulin metabolic process / amyloid-beta clearance by cellular catabolic process / hormone catabolic process / bradykinin catabolic process / ubiquitin-modified protein reader activity / insulin binding / negative regulation of NAD(P)H oxidase activity ...insulysin / ubiquitin recycling / insulin catabolic process / insulin metabolic process / amyloid-beta clearance by cellular catabolic process / hormone catabolic process / bradykinin catabolic process / ubiquitin-modified protein reader activity / insulin binding / negative regulation of NAD(P)H oxidase activity / regulation of aerobic respiration / negative regulation of glycogen catabolic process / regulation of cellular amino acid metabolic process / peptide catabolic process / Signaling by Insulin receptor / IRS activation / nitric oxide-cGMP-mediated signaling / negative regulation of fatty acid metabolic process / Insulin processing / negative regulation of feeding behavior / regulation of protein secretion / amyloid-beta clearance / positive regulation of peptide hormone secretion / Regulation of gene expression in beta cells / positive regulation of respiratory burst / peroxisomal matrix / positive regulation of dendritic spine maintenance / alpha-beta T cell activation / negative regulation of acute inflammatory response / negative regulation of respiratory burst involved in inflammatory response / negative regulation of protein secretion / fatty acid homeostasis / Synthesis, secretion, and deacylation of Ghrelin / positive regulation of glycogen biosynthetic process / positive regulation of lipid biosynthetic process / Signal attenuation / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / negative regulation of gluconeogenesis / positive regulation of nitric oxide mediated signal transduction / regulation of protein localization to plasma membrane / COPI-mediated anterograde transport / amyloid-beta metabolic process / negative regulation of lipid catabolic process / negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / negative regulation of reactive oxygen species biosynthetic process / positive regulation of insulin receptor signaling pathway / transport vesicle / positive regulation of protein autophosphorylation / Insulin receptor recycling / insulin-like growth factor receptor binding / NPAS4 regulates expression of target genes / positive regulation of protein metabolic process / neuron projection maintenance / endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of brown fat cell differentiation / activation of protein kinase B activity / positive regulation of glycolytic process / proteolysis involved in protein catabolic process / Insulin receptor signalling cascade / positive regulation of mitotic nuclear division / Regulation of insulin secretion / positive regulation of nitric-oxide synthase activity / positive regulation of long-term synaptic potentiation / endosome lumen / positive regulation of cytokine production / acute-phase response / positive regulation of protein secretion / regulation of transmembrane transporter activity / Peroxisomal protein import / positive regulation of cell differentiation / peptide binding / positive regulation of glucose import / negative regulation of proteolysis / regulation of synaptic plasticity / protein catabolic process / wound healing / insulin receptor binding / negative regulation of protein catabolic process / positive regulation of neuron projection development / hormone activity / metalloendopeptidase activity / antigen processing and presentation of endogenous peptide antigen via MHC class I / cognition / peroxisome / Golgi lumen / vasodilation / positive regulation of protein localization to nucleus / positive regulation of protein catabolic process / glucose metabolic process / regulation of protein localization / glucose homeostasis / virus receptor activity / cell-cell signaling / insulin receptor signaling pathway / positive regulation of NF-kappaB transcription factor activity / positive regulation of protein binding / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / positive regulation of cell growth / basolateral plasma membrane / secretory granule lumen Similarity search - Function | |||||||||||||||
Biological species | Homo sapiens (human) | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||||||||
Authors | Liang, W.G. / Zhang, Z. / Bailey, L.J. / Kossiakoff, A.A. / Tan, Y.Z. / Wei, H. / Carragher, B. / Potter, S.C. / Tang, W.J. | |||||||||||||||
Funding support | United States, 4items
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Citation | Journal: Elife / Year: 2018 Title: Ensemble cryoEM elucidates the mechanism of insulin capture and degradation by human insulin degrading enzyme. Authors: Zhening Zhang / Wenguang G Liang / Lucas J Bailey / Yong Zi Tan / Hui Wei / Andrew Wang / Mara Farcasanu / Virgil A Woods / Lauren A McCord / David Lee / Weifeng Shang / Rebecca Deprez- ...Authors: Zhening Zhang / Wenguang G Liang / Lucas J Bailey / Yong Zi Tan / Hui Wei / Andrew Wang / Mara Farcasanu / Virgil A Woods / Lauren A McCord / David Lee / Weifeng Shang / Rebecca Deprez-Poulain / Benoit Deprez / David R Liu / Akiko Koide / Shohei Koide / Anthony A Kossiakoff / Sheng Li / Bridget Carragher / Clinton S Potter / Wei-Jen Tang / Abstract: Insulin degrading enzyme (IDE) plays key roles in degrading peptides vital in type two diabetes, Alzheimer's, inflammation, and other human diseases. However, the process through which IDE recognizes ...Insulin degrading enzyme (IDE) plays key roles in degrading peptides vital in type two diabetes, Alzheimer's, inflammation, and other human diseases. However, the process through which IDE recognizes peptides that tend to form amyloid fibrils remained unsolved. We used cryoEM to understand both the apo- and insulin-bound dimeric IDE states, revealing that IDE displays a large opening between the homologous ~55 kDa N- and C-terminal halves to allow selective substrate capture based on size and charge complementarity. We also used cryoEM, X-ray crystallography, SAXS, and HDX-MS to elucidate the molecular basis of how amyloidogenic peptides stabilize the disordered IDE catalytic cleft, thereby inducing selective degradation by substrate-assisted catalysis. Furthermore, our insulin-bound IDE structures explain how IDE processively degrades insulin by stochastically cutting either chain without breaking disulfide bonds. Together, our studies provide a mechanism for how IDE selectively degrades amyloidogenic peptides and offers structural insights for developing IDE-based therapies. | |||||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6b3q.cif.gz | 353.3 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6b3q.ent.gz | 287.3 KB | Display | PDB format |
PDBx/mmJSON format | 6b3q.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/b3/6b3q ftp://data.pdbj.org/pub/pdb/validation_reports/b3/6b3q | HTTPS FTP |
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-Related structure data
Related structure data | 7041MC 7062C 7065C 7066C 7090C 7091C 7092C 7093C 5wobC 6b70C 6b7yC 6b7zC 6bf6C 6bf7C 6bf8C 6bf9C 6bfcC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 114561.562 Da / Num. of mol.: 2 / Fragment: residues 42-1019 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: IDE / Production host: Escherichia coli (E. coli) / References: UniProt: P14735, insulysin #2: Protein | Mass: 11989.862 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: INS / Production host: Escherichia coli (E. coli) / References: UniProt: P01308 |
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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: Insulin degrading enzyme/Insulin / Type: COMPLEX Details: Cryo-EM structure of human insulin degrading enzyme in complex with insulin Entity ID: all / Source: RECOMBINANT | ||||||||||||||||||||
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Molecular weight | Value: 0.1 MDa / Experimental value: YES | ||||||||||||||||||||
Source (natural) | Organism: Homo sapiens (human) | ||||||||||||||||||||
Source (recombinant) | Organism: Escherichia coli (E. coli) / Strain: BL | ||||||||||||||||||||
Buffer solution | pH: 7.8 | ||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: The sample was monodisperse | ||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: homemade nanowire grid | ||||||||||||||||||||
Vitrification | Instrument: HOMEMADE PLUNGER / Cryogen name: ETHANE / Humidity: 85 % / Chamber temperature: 298 K Details: The cryo grids were made using Spotiton and homemade plunger |
-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 FIELDBright-field microscopy / Nominal magnification: 22500 X / Calibrated magnification: 46598 X / Nominal defocus max: 2200 nm / Nominal defocus min: 940 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 70 K / Temperature (min): 70 K / Residual tilt: 10 mradians |
Image recording | Average exposure time: 10 sec. / Electron dose: 71.4 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 3 / Num. of real images: 3085 |
Image scans | Sampling size: 5 µm / Width: 3710 / Height: 3838 / Movie frames/image: 50 / Used frames/image: 1-50 |
-Processing
Software | Name: PHENIX / Version: 1.12_2829: / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 762283 | ||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 116122 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | B value: 92 / Protocol: FLEXIBLE FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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