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- PDB-6b70: Cryo-EM structure of human insulin degrading enzyme in complex wi... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6b70 | |||||||||||||||
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Title | Cryo-EM structure of human insulin degrading enzyme in complex with FAB H11-E heavy chain, FAB H11-E light chain and insulin | |||||||||||||||
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![]() | HYDROLASE/IMMUNE SYSTEM/HORMONE / IDE / insulin degrading enzyme / amyloid beta / BIOSYNTHETIC PROTEIN / HYDROLASE-IMMUNE SYSTEM-HORMONE complex | |||||||||||||||
Function / homology | ![]() insulysin / ubiquitin recycling / insulin catabolic process / insulin metabolic process / amyloid-beta clearance by cellular catabolic process / hormone catabolic process / bradykinin catabolic process / insulin binding / negative regulation of NAD(P)H oxidase activity / negative regulation of glycogen catabolic process ...insulysin / ubiquitin recycling / insulin catabolic process / insulin metabolic process / amyloid-beta clearance by cellular catabolic process / hormone catabolic process / bradykinin catabolic process / insulin binding / negative regulation of NAD(P)H oxidase activity / negative regulation of glycogen catabolic process / regulation of aerobic respiration / positive regulation of nitric oxide mediated signal transduction / negative regulation of fatty acid metabolic process / negative regulation of feeding behavior / Signaling by Insulin receptor / peptide catabolic process / IRS activation / Insulin processing / regulation of protein secretion / amyloid-beta clearance / positive regulation of peptide hormone secretion / positive regulation of respiratory burst / negative regulation of acute inflammatory response / Regulation of gene expression in beta cells / alpha-beta T cell activation / peroxisomal matrix / regulation of cellular amino acid metabolic process / negative regulation of respiratory burst involved in inflammatory response / positive regulation of dendritic spine maintenance / positive regulation of glycogen biosynthetic process / Synthesis, secretion, and deacylation of Ghrelin / negative regulation of protein secretion / regulation of protein localization to plasma membrane / fatty acid homeostasis / amyloid-beta metabolic process / Signal attenuation / negative regulation of lipid catabolic process / negative regulation of gluconeogenesis / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / immunoglobulin complex, circulating / immunoglobulin receptor binding / COPI-mediated anterograde transport / positive regulation of lipid biosynthetic process / negative regulation of reactive oxygen species biosynthetic process / negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / positive regulation of insulin receptor signaling pathway / nitric oxide-cGMP-mediated signaling / transport vesicle / positive regulation of protein autophosphorylation / Insulin receptor recycling / insulin-like growth factor receptor binding / neuron projection maintenance / NPAS4 regulates expression of target genes / positive regulation of protein metabolic process / positive regulation of brown fat cell differentiation / activation of protein kinase B activity / endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of glycolytic process / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / complement activation, classical pathway / peptide binding / proteolysis involved in protein catabolic process / positive regulation of nitric-oxide synthase activity / positive regulation of cytokine production / positive regulation of long-term synaptic potentiation / acute-phase response / antigen binding / Regulation of insulin secretion / negative regulation of protein catabolic process / endosome lumen / positive regulation of glucose import / positive regulation of protein secretion / negative regulation of proteolysis / positive regulation of cell differentiation / Peroxisomal protein import / regulation of transmembrane transporter activity / insulin receptor binding / wound healing / protein catabolic process / regulation of synaptic plasticity / vasodilation / hormone activity / antigen processing and presentation of endogenous peptide antigen via MHC class I / metalloendopeptidase activity / cognition / positive regulation of neuron projection development / positive regulation of protein localization to nucleus / Golgi lumen / positive regulation of protein catabolic process / glucose metabolic process / regulation of protein localization / glucose homeostasis / virus receptor activity / positive regulation of protein binding / insulin receptor signaling pathway / cell-cell signaling / peroxisome / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / positive regulation of NF-kappaB transcription factor activity Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() ![]() | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||||||||
![]() | 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 | ![]()
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![]() | ![]() 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 |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 491.8 KB | Display | ![]() |
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PDB format | ![]() | 404.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 7062MC ![]() 7041C ![]() 7065C ![]() 7066C ![]() 7090C ![]() 7091C ![]() 7092C ![]() 7093C ![]() 5wobC ![]() 6b3qC ![]() 6b7yC ![]() 6b7zC ![]() 6bf6C ![]() 6bf7C ![]() 6bf8C ![]() 6bf9C ![]() 6bfcC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 | ![]()
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Components
#1: Protein | Mass: 111866.484 Da / Num. of mol.: 2 / Fragment: residues 46-1011 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Antibody | Mass: 23057.748 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Production host: ![]() ![]() #3: Antibody | Mass: 23087.609 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Production host: ![]() ![]() #4: Protein | Mass: 11989.862 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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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 |
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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: ![]() | ||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | ||||||||||||||||||||
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 | ||||||||||||||||||||
Vitrification | Instrument: HOMEMADE PLUNGER / Cryogen name: ETHANE / Humidity: 85 % / Chamber temperature: 298 K Details: The cryo grids were made using Spotiton and homemade plunger |
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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 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 |
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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 | ||||||||||||||||||||||||||||||||||||||||||||
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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