6DG1

NMR structure of the second qRRM2 domain of human hnRNP H

  • Classification: RNA BINDING PROTEIN
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2018-05-16 Released: 2018-09-05 
  • Deposition Author(s): Srinivasa, R.P.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 800 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Differential Conformational Dynamics Encoded by the Inter-qRRM linker of hnRNP H.

Penumutchu, S.Chiu, L.Y.Meagher, J.L.Hansen, A.L.Stuckey, J.A.Tolbert, B.S.

(2018) J Am Chem Soc 

  • DOI: 10.1021/jacs.8b05366
  • Primary Citation of Related Structures:  
    6DG1, 6DHS

  • PubMed Abstract: 
  • Members of the heterogeneous nuclear ribonucleoprotein (hnRNP) F/H family are multipurpose RNA binding proteins that participate in most stages of RNA metabolism. Despite having similar RNA sequence preferences, hnRNP F/H proteins function in overlapping and, in some cases, distinct cellular processes ...

    Members of the heterogeneous nuclear ribonucleoprotein (hnRNP) F/H family are multipurpose RNA binding proteins that participate in most stages of RNA metabolism. Despite having similar RNA sequence preferences, hnRNP F/H proteins function in overlapping and, in some cases, distinct cellular processes. The domain organization of hnRNP F/H proteins is modular, consisting of N-terminal tandem quasi-RNA recognition motifs (F/HqRRM1,2) and a third C-terminal qRRM3 embedded between glycine-rich repeats. The tandem qRRMs are connected through a 10-residue linker, with several amino acids strictly conserved between hnRNP H and F. A significant difference occurs at position 105 of the linker, where hnRNP H contains a proline and hnRNP F an alanine. To investigate the influence of P105 on the conformational properties of hnRNP H, we probed the structural dynamics of its HqRRM1,2 domain with X-ray crystallography, NMR spectroscopy, and small-angle X-ray scattering. The collective results best describe that HqRRM1,2 exists in a conformational equilibrium between compact and extended structures. The compact structure displays an electropositive surface formed at the qRRM1-qRRM2 interface. Comparison of NMR relaxation parameters, including Carr-Purcell-Meiboom-Gill (CPMG) relaxation dispersion, between HqRRM1,2 and FqRRM1,2 indicates that FqRRM1,2 primarily adopts a more extended and flexible conformation. Introducing the P105A mutation into HqRRM1,2 alters its conformational dynamics to favor an extended structure. Thus, our work demonstrates that the linker compositions confer different structural properties between hnRNP F/H family members that might contribute to their functional diversity.


    Organizational Affiliation

    Department of Chemistry , Case Western Reserve University , Cleveland , Ohio 44106 , United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
qRRM2 domain of Heterogeneous nuclear ribonucleoprotein H2A105Homo sapiensMutation(s): 0 
Gene Names: HNRNPH2FTP3HNRPH2
UniProt & NIH Common Fund Data Resources
Find proteins for P55795 (Homo sapiens)
Explore P55795 
Go to UniProtKB:  P55795
PHAROS:  P55795
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 800 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 
  • OLDERADO: 6DG1 Olderado

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data

  • Deposited Date: 2018-05-16 
  • Released Date: 2018-09-05 
  • Deposition Author(s): Srinivasa, R.P.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM101979
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP41 GM103622

Revision History  (Full details and data files)

  • Version 1.0: 2018-09-05
    Type: Initial release
  • Version 1.1: 2019-12-11
    Changes: Author supporting evidence, Data collection