7CSZ

Crystal structure of the N-terminal tandem RRM domains of RBM45 in complex with single-stranded DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.190 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structural basis for RNA recognition by the N-terminal tandem RRM domains of human RBM45.

Chen, X.Yang, Z.Wang, W.Qian, K.Liu, M.Wang, J.Wang, M.

(2021) Nucleic Acids Res 49: 2946-2958

  • DOI: https://doi.org/10.1093/nar/gkab075
  • Primary Citation of Related Structures:  
    7CSX, 7CSZ

  • PubMed Abstract: 

    RBM45 is an RNA-binding protein involved in neural development, whose aggregation is associated with neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS) and frontotemporal lobar dementia (FTLD). However, the mechanisms of RNA-binding and aggregation of RBM45 remain unelucidated. Here, we report the crystal structure of the N-terminal tandem RRM domains of human RBM45 in complex with single-stranded DNA (ssDNA). Our structural and biochemical results revealed that both the RRM1 and RRM2 of RBM45 recognized the GAC sequence of RNA/ssDNA. Two aromatic residues and an arginine residue in each RRM were critical for RNA-binding, and the interdomain linker was also involved in RNA-binding. Two RRMs formed a pair of antiparallel RNA-binding sites, indicating that the N-terminal tandem RRM domains of RBM45 bound separate GAC motifs in one RNA strand or GAC motifs in different RNA strands. Our findings will be helpful in the identification of physiologic targets of RBM45 and provide evidence for understanding the physiologic and pathologic functions of RBM45.


  • Organizational Affiliation

    Institutes of Physical Science and Information Technology, Anhui University, 111 Jiulong Road, Hefei 230601, Anhui, China.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RNA-binding protein 45201Homo sapiensMutation(s): 0 
Gene Names: RBM45DRB1DRBP1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8IUH3 (Homo sapiens)
Explore Q8IUH3 
Go to UniProtKB:  Q8IUH3
PHAROS:  Q8IUH3
GTEx:  ENSG00000155636 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8IUH3
Sequence Annotations
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  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains LengthOrganismImage
DNA (5'-D(*CP*GP*AP*CP*GP*GP*GP*AP*CP*GP*C)-3')
B, C
11Homo sapiens
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.190 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.546α = 90
b = 86.546β = 90
c = 27.374γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31470719

Revision History  (Full details and data files)

  • Version 1.0: 2021-02-03
    Type: Initial release
  • Version 1.1: 2021-02-24
    Changes: Database references
  • Version 1.2: 2021-03-31
    Changes: Database references
  • Version 1.3: 2023-11-29
    Changes: Data collection, Database references, Refinement description