Solution structure of Gaussia Luciferase by NMR

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 19 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Solution structure of Gaussia Luciferase with five disulfide bonds and identification of a putative coelenterazine binding cavity by heteronuclear NMR.

Wu, N.Kobayashi, N.Tsuda, K.Unzai, S.Saotome, T.Kuroda, Y.Yamazaki, T.

(2020) Sci Rep 10: 20069-20069

  • DOI: https://doi.org/10.1038/s41598-020-76486-4
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Gaussia luciferase (GLuc) is a small luciferase (18.2 kDa; 168 residues) and is thus attracting much attention as a reporter protein, but the lack of structural information is hampering further application. Here, we report the first solution structure of a fully active, recombinant GLuc determined by heteronuclear multidimensional NMR. We obtained a natively folded GLuc by bacterial expression and efficient refolding using a Solubility Enhancement Petide (SEP) tag. Almost perfect assignments of GLuc's 1 H, 13 C and 15 N backbone signals were obtained. GLuc structure was determined using CYANA, which automatically identified over 2500 NOEs of which > 570 were long-range. GLuc is an all-alpha-helix protein made of nine helices. The region spanning residues 10-18, 36-81, 96-145 and containing eight out of the nine helices was determined with a C α -atom RMSD of 1.39 Å ± 0.39 Å. The structure of GLuc is novel and unique. Two homologous sequential repeats form two anti-parallel bundles made by 4 helices and tied together by three disulfide bonds. The N-terminal helix 1 is grabbed by these 4 helices. Further, we found a hydrophobic cavity where several residues responsible for bioluminescence were identified in previous mutational studies, and we thus hypothesize that this is a catalytic cavity, where the hydrophobic coelenterazine binds and the bioluminescence reaction takes place.

  • Organizational Affiliation

    College of Food and Bioengineering, Zhengzhou University of Light Industry, 136 Kexue Road, Zhengzhou, 450001, People's Republic of China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Luciferase174Gaussia princeps (Scott, 1894)Mutation(s): 2 
Find proteins for Q9BLZ2 (Gaussia princeps)
Explore Q9BLZ2 
Go to UniProtKB:  Q9BLZ2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BLZ2
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 19 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-12-02
    Type: Initial release
  • Version 1.1: 2020-12-09
    Changes: Structure summary
  • Version 1.2: 2023-06-14
    Changes: Database references, Other