Crystal structure of hnRNPA2B1 in complex with RNA

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.227 

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This is version 1.3 of the entry. See complete history


Molecular basis for the specific and multivariant recognitions of RNA substrates by human hnRNP A2/B1.

Wu, B.Su, S.Patil, D.P.Liu, H.Gan, J.Jaffrey, S.R.Ma, J.

(2018) Nat Commun 9: 420-420

  • DOI: https://doi.org/10.1038/s41467-017-02770-z
  • Primary Citation of Related Structures:  
    5HO4, 5WWE, 5WWF, 5WWG

  • PubMed Abstract: 

    Human hnRNP A2/B1 is an RNA-binding protein that plays important roles in many biological processes, including maturation, transport, and metabolism of mRNA, and gene regulation of long noncoding RNAs. hnRNP A2/B1 was reported to control the microRNAs sorting to exosomes and promote primary microRNA processing as a potential m 6 A "reader." hnRNP A2/B1 contains two RNA recognition motifs that provide sequence-specific recognition of RNA substrates. Here, we determine crystal structures of tandem RRM domains of hnRNP A2/B1 in complex with various RNA substrates, elucidating specific recognitions of AGG and UAG motifs by RRM1 and RRM2 domains, respectively. Further structural and biochemical results demonstrate multivariant binding modes for sequence-diversified RNA substrates, supporting a RNA matchmaker mechanism in hnRNP A2/B1 function. Moreover, our studies in combination with bioinformatic analysis suggest that hnRNP A2/B1 may mediate effects of m 6 A through a "m 6 A switch" mechanism, instead of acting as a direct "reader" of m 6 A modification.

  • Organizational Affiliation

    State Key Laboratory of Genetic Engineering, Collaborative Innovation Centre of Genetics and Development, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China.


Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Heterogeneous nuclear ribonucleoproteins A2/B1184Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P22626 (Homo sapiens)
Explore P22626 
Go to UniProtKB:  P22626
PHAROS:  P22626
GTEx:  ENSG00000122566 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22626
Sequence Annotations
  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains LengthOrganismImage
RNA (5'-R(*AP*GP*GP*GP*AP*CP*UP*AP*GP*A)-3')10synthetic construct
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.227 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.591α = 90
b = 62.591β = 90
c = 53.043γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
HKL-3000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-17
    Type: Initial release
  • Version 1.1: 2018-02-07
    Changes: Database references
  • Version 1.2: 2018-02-14
    Changes: Database references
  • Version 1.3: 2023-11-22
    Changes: Data collection, Database references, Refinement description