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Open data
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Basic information
Entry | Database: PDB / ID: 8pjj | ||||||
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Title | Cryo-EM structure of MLE in complex with SL7UUC RNA and ADP | ||||||
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Function / homology | ![]() RIP-mediated NFkB activation via ZBP1 / X chromosome located dosage compensation complex, transcription activating / 3'-5' DNA/RNA helicase activity / DEx/H-box helicases activate type I IFN and inflammatory cytokines production / male courtship behavior, veined wing generated song production / regulation of cytoplasmic translation / regulatory region RNA binding / ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | ||||||
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Method | ![]() ![]() ![]() | ||||||
![]() | Jagtap, P.K.A. / Hennig, J. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis of RNA-induced autoregulation of the DExH-type RNA helicase maleless. Authors: Pravin Kumar Ankush Jagtap / Marisa Müller / Anna E Kiss / Andreas W Thomae / Karine Lapouge / Martin Beck / Peter B Becker / Janosch Hennig / ![]() Abstract: RNA unwinding by DExH-type helicases underlies most RNA metabolism and function. It remains unresolved if and how the basic unwinding reaction of helicases is regulated by auxiliary domains. We ...RNA unwinding by DExH-type helicases underlies most RNA metabolism and function. It remains unresolved if and how the basic unwinding reaction of helicases is regulated by auxiliary domains. We explored the interplay between the RecA and auxiliary domains of the RNA helicase maleless (MLE) from Drosophila using structural and functional studies. We discovered that MLE exists in a dsRNA-bound open conformation and that the auxiliary dsRBD2 domain aligns the substrate RNA with the accessible helicase tunnel. In an ATP-dependent manner, dsRBD2 associates with the helicase module, leading to tunnel closure around ssRNA. Furthermore, our structures provide a rationale for blunt-ended dsRNA unwinding and 3'-5' translocation by MLE. Structure-based MLE mutations confirm the functional relevance of our model for RNA unwinding. Our findings contribute to our understanding of the fundamental mechanics of auxiliary domains in DExH helicase MLE, which serves as a model for its human ortholog and potential therapeutic target, DHX9/RHA. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 263.3 KB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 17711MC ![]() 8b9gC ![]() 8b9iC ![]() 8b9jC ![]() 8b9kC ![]() 8b9lC ![]() 8pjbC 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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1 |
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Components
#1: Protein | Mass: 130335.961 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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#2: RNA chain | Mass: 19011.131 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() ![]() |
#3: Chemical | ChemComp-ADP / ![]() |
Has ligand of interest | Y |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: ![]() |
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Sample preparation
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Molecular weight | Value: 0.150 MDa / Experimental value: YES | ||||||||||||||||||||||||
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
Specimen | Conc.: 0.6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied![]() ![]() | ||||||||||||||||||||||||
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![]() |
Image recording | Electron dose: 52.6 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) |
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Processing
CTF correction![]() | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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3D reconstruction![]() | Resolution: 4.24 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 61690 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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