Solution NMR structure of human LARP7 xRRM2

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.4 of the entry. See complete history


hLARP7 C-terminal domain contains an xRRM that binds the 3' hairpin of 7SK RNA.

Eichhorn, C.D.Chug, R.Feigon, J.

(2016) Nucleic Acids Res 44: 9977-9989

  • DOI: https://doi.org/10.1093/nar/gkw833
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The 7SK small nuclear ribonucleoprotein (snRNP) sequesters and inactivates the positive transcription elongation factor b (P-TEFb), an essential eukaryotic mRNA transcription factor. The human La-related protein group 7 (hLARP7) is a constitutive component of the 7SK snRNP and localizes to the 3' terminus of the 7SK long noncoding RNA. hLARP7, and in particular its C-terminal domain (CTD), is essential for 7SK RNA stability and assembly with P-TEFb. The hLARP7 N-terminal La module binds and protects the 3' end from degradation, but the structural and functional role of its CTD is unclear. We report the solution NMR structure of the hLARP7 CTD and show that this domain contains an xRRM, a class of atypical RRM first identified in the Tetrahymena thermophila telomerase LARP7 protein p65. The xRRM binds the 3' end of 7SK RNA at the top of stem-loop 4 (SL4) and interacts with both unpaired and base-paired nucleotides. This study confirms that the xRRM is general to the LARP7 family of proteins and defines the binding site for hLARP7 on the 7SK RNA, providing insight into function.

  • Organizational Affiliation

    Department of Chemistry and Biochemistry, P.O. Box 951569, University of California, Los Angeles, CA 90095-1569, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
La-related protein 7125Homo sapiensMutation(s): 0 
Gene Names: LARP7HDCMA18P
UniProt & NIH Common Fund Data Resources
Find proteins for Q4G0J3 (Homo sapiens)
Explore Q4G0J3 
Go to UniProtKB:  Q4G0J3
GTEx:  ENSG00000174720 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4G0J3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM107567

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2016-12-14
    Changes: Database references
  • Version 1.2: 2017-09-20
    Changes: Author supporting evidence, Structure summary
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence, Data collection
  • Version 1.4: 2023-06-14
    Changes: Database references, Other