8S6N

Structure of MLLE3 in complex with PAMPL1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.220 

Starting Model: in silico
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wwPDB Validation   3D Report Full Report


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Literature

Deciphering the RNA-binding protein network during endosomal mRNA transport.

Devan, S.K.Shanmugasundaram, S.Muntjes, K.Postma, J.Smits, S.H.J.Altegoer, F.Feldbrugge, M.

(2024) Proc Natl Acad Sci U S A 121: e2404091121-e2404091121

  • DOI: https://doi.org/10.1073/pnas.2404091121
  • Primary Citation of Related Structures:  
    8S6N, 8S6O

  • PubMed Abstract: 

    Microtubule-dependent endosomal transport is crucial for polar growth, ensuring the precise distribution of cellular cargos such as proteins and mRNAs. However, the molecular mechanism linking mRNAs to the endosomal surface remains poorly understood. Here, we present a structural analysis of the key RNA-binding protein Rrm4 from Ustilago maydis . Our findings reveal a different type of MademoiseLLE domain (MLLE) featuring a seven-helical bundle that provides a distinct binding interface. A comparative analysis with the canonical MademoiseLLE domain of the poly(A)-binding protein Pab1 disclosed unique characteristics of both domains. Deciphering the MLLE binding code enabled prediction and verification of previously unknown Rrm4 interactors containing short linear motifs. Importantly, we demonstrated that the human MLLE domains, such as those of PABPC1 and UBR5, employed a similar principle to distinguish among interaction partners. Thus, our study provides detailed mechanistic insights into how structural variations in the widely distributed MLLE domain facilitate mRNA attachment during endosomal transport.


  • Organizational Affiliation

    Department of Biology, Institute of Microbiology, Cluster of Excellence on Plant Sciences, Heinrich Heine University Düsseldorf, Düsseldorf 40204, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RNA-binding protein RRM4A,
C [auth B],
E [auth D],
G
135Mycosarcoma maydisMutation(s): 0 
Gene Names: RRM4UMAG_10836
UniProt
Find proteins for A0A0D1DWZ5 (Ustilago maydis (strain 521 / FGSC 9021))
Explore A0A0D1DWZ5 
Go to UniProtKB:  A0A0D1DWZ5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0D1DWZ5
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PAMPL1B [auth E],
D [auth C],
F,
H
9Mycosarcoma maydisMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.220 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.715α = 90
b = 83.486β = 90
c = 170.398γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)Germany417919780

Revision History  (Full details and data files)

  • Version 1.0: 2024-10-30
    Type: Initial release
  • Version 1.1: 2024-11-13
    Changes: Database references