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- PDB-8pjb: Cryo-EM structure of MLE in complex with UUC RNA and ADP -

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Basic information

Entry
Database: PDB / ID: 8pjb
TitleCryo-EM structure of MLE in complex with UUC RNA and ADP
Components
  • Dosage compensation regulator
  • RNA (5'-R(P*CP*UP*CP*UP*UP*UP*CP*UP*U)-3')
KeywordsRNA BINDING PROTEIN / RNA helicase
Function / homology
Function and homology information


RIP-mediated NFkB activation via ZBP1 / X chromosome located dosage compensation complex, transcription activating / dosage compensation complex assembly / 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 / regulatory region RNA binding / regulation of cytoplasmic translation / PKR-mediated signaling / MSL complex ...RIP-mediated NFkB activation via ZBP1 / X chromosome located dosage compensation complex, transcription activating / dosage compensation complex assembly / 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 / regulatory region RNA binding / regulation of cytoplasmic translation / PKR-mediated signaling / MSL complex / dosage compensation by hyperactivation of X chromosome / positive regulation of DNA topoisomerase (ATP-hydrolyzing) activity / sex-chromosome dosage compensation / 3'-5' RNA helicase activity / regulation of mRNA processing / axon extension / DNA duplex unwinding / lncRNA binding / 3'-5' DNA helicase activity / nuclear chromosome / positive regulation of heterochromatin formation / X chromosome / DNA helicase activity / determination of adult lifespan / helicase activity / double-stranded RNA binding / chromosome / double-stranded DNA binding / RNA helicase activity / RNA helicase / ribonucleoprotein complex / chromatin binding / chromatin / nucleolus / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / RNA binding / ATP binding / nucleus / cytosol
Similarity search - Function
DHX9, first double-stranded RNA binding domain / DHX9, second double-stranded RNA binding domain / DHX9, DEXH-box helicase domain / : / Helicase associated domain (HA2), ratchet-like / DEAD-box helicase, OB fold / Oligonucleotide/oligosaccharide-binding (OB)-fold / Helicase associated domain (HA2), winged-helix / Helicase-associated domain / Helicase associated domain (HA2) Add an annotation ...DHX9, first double-stranded RNA binding domain / DHX9, second double-stranded RNA binding domain / DHX9, DEXH-box helicase domain / : / Helicase associated domain (HA2), ratchet-like / DEAD-box helicase, OB fold / Oligonucleotide/oligosaccharide-binding (OB)-fold / Helicase associated domain (HA2), winged-helix / Helicase-associated domain / Helicase associated domain (HA2) Add an annotation / Double-stranded RNA binding motif / Double-stranded RNA binding motif / DNA/RNA helicase, ATP-dependent, DEAH-box type, conserved site / DEAH-box subfamily ATP-dependent helicases signature. / Double stranded RNA-binding domain (dsRBD) profile. / Double-stranded RNA-binding domain / DEAD/DEAH box helicase domain / DEAD/DEAH box helicase / Helicase conserved C-terminal domain / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / RNA / RNA (> 10) / Dosage compensation regulator mle
Similarity search - Component
Biological speciesDrosophila melanogaster (fruit fly)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.62 Å
AuthorsJagtap, P.K.A. / Hennig, J.
Funding support Germany, 1items
OrganizationGrant numberCountry
EIPOD fellowship under Marie Sklodowska-Curie Actions COFUND Germany
CitationJournal: Mol Cell / Year: 2023
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
DepositionJun 23, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Nov 1, 2023Provider: repository / Type: Initial release
Revision 1.1Jun 5, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Dosage compensation regulator
C: RNA (5'-R(P*CP*UP*CP*UP*UP*UP*CP*UP*U)-3')
hetero molecules


Theoretical massNumber of molelcules
Total (without water)134,4124
Polymers133,9602
Non-polymers4522
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Dosage compensation regulator / ATP-dependent RNA helicase mle / Protein male-less / Protein maleless / Protein no action potential


Mass: 130335.961 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Drosophila melanogaster (fruit fly) / Gene: mle, nap, CG11680 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P24785, RNA helicase
#2: RNA chain RNA (5'-R(P*CP*UP*CP*UP*UP*UP*CP*UP*U)-3')


Mass: 3624.112 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Drosophila melanogaster (fruit fly)
#3: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1Complex of MLE, UUC and ADPCOMPLEX#1-#20MULTIPLE SOURCES
2Dosage compensation regulatorCOMPLEX#11RECOMBINANT
3RNA (5'-R(P*CP*UP*CP*UP*UP*UP*CP*UP*U)-3')COMPLEX#21RECOMBINANT
Molecular weightValue: 0.134 MDa / Experimental value: YES
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
22Drosophila melanogaster (fruit fly)7227
33Drosophila melanogaster (fruit fly)7227
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
22Spodoptera frugiperda (fall armyworm)7108
33Synthetic construct (others)32630
Buffer solutionpH: 7.5
SpecimenConc.: 0.6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 49.9 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.62 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 79756 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0038071
ELECTRON MICROSCOPYf_angle_d0.62910976
ELECTRON MICROSCOPYf_dihedral_angle_d6.4491183
ELECTRON MICROSCOPYf_chiral_restr0.0421264
ELECTRON MICROSCOPYf_plane_restr0.0041380

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