NMR solution structure of the HVO_2922 protein from Haloferax volcanii

Experimental Data Snapshot

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

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Solution Structure and Dynamics of the Small Protein HVO_2922 from Haloferax volcanii.

Kubatova, N.Jonker, H.R.A.Saxena, K.Richter, C.Vogel, V.Schreiber, S.Marchfelder, A.Schwalbe, H.

(2020) Chembiochem 21: 149-156

  • DOI: https://doi.org/10.1002/cbic.201900085
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Past sequencing campaigns overlooked small proteins as they seemed to be irrelevant due to their small size. However, their occurrence is widespread, and there is growing evidence that these small proteins are in fact functionally very important in organisms found in all kingdoms of life. Within a global proteome analysis for small proteins of the archaeal model organism Haloferax volcanii, the HVO_2922 protein has been identified. It is differentially expressed in response to changes in iron and salt concentrations, thus suggesting that its expression is stress-regulated. The protein is conserved among Haloarchaea and contains an uncharacterized domain of unknown function (DUF1508, UPF0339 family protein). We elucidated the NMR solution structure, which shows that the isolated protein forms a symmetrical dimer. The dimerization is found to be concentration-dependent and essential for protein stability and most likely for its functionality, as mutagenesis at the dimer interface leads to a decrease in stability and protein aggregation.

  • Organizational Affiliation

    Organic Chemistry and Chemical Biology, Goethe University Frankfurt, Max von Laue Strasse 7, 60438, Frankfurt am Main, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UPF0339 family protein
A, B
60Haloferax volcanii DS2Mutation(s): 0 
Gene Names: HVO_2922
Find proteins for D4GXU1 (Haloferax volcanii (strain ATCC 29605 / DSM 3757 / JCM 8879 / NBRC 14742 / NCIMB 2012 / VKM B-1768 / DS2))
Explore D4GXU1 
Go to UniProtKB:  D4GXU1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD4GXU1
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

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
German Research FoundationGermanySPP 2002 priority program - 313752925
GermanyState of Hesse - BMRZ

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-12
    Type: Initial release
  • Version 1.1: 2020-01-29
    Changes: Database references
  • Version 1.2: 2023-06-14
    Changes: Database references, Other