6BYW

Structure of GoxA from Pseudoalteromonas luteoviolacea

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structure and Enzymatic Properties of an Unusual Cysteine Tryptophylquinone-Dependent Glycine Oxidase from Pseudoalteromonas luteoviolacea.

Andreo-Vidal, A., Mamounis, K.J., Sehanobish, E., Avalos, D., Campillo-Brocal, J.C., Sanchez-Amat, A., Yukl, E.T., Davidson, V.L.

(2018) Biochemistry 57: 1155-1165

  • DOI: 10.1021/acs.biochem.8b00009
  • Primary Citation of Related Structures:  
    6BYW

  • PubMed Abstract: 

    • Glycine oxidase from Pseudoalteromonas luteoviolacea (PlGoxA) is a cysteine tryptophylquinone (CTQ)-dependent enzyme. Sequence analysis and phylogenetic analysis place it in a newly designated subgroup (group IID) of a recently identified family of LodA-like proteins, which are predicted to possess CTQ ...

    Glycine oxidase from Pseudoalteromonas luteoviolacea (PlGoxA) is a cysteine tryptophylquinone (CTQ)-dependent enzyme. Sequence analysis and phylogenetic analysis place it in a newly designated subgroup (group IID) of a recently identified family of LodA-like proteins, which are predicted to possess CTQ. The crystal structure of PlGoxA reveals that it is a homotetramer. It possesses an N-terminal domain with no close structural homologues in the Protein Data Bank. The active site is quite small because of intersubunit interactions, which may account for the observed cooperativy toward glycine. Steady-state kinetic analysis yielded the following values: k cat = 6.0 ± 0.2 s -1 , K 0.5 = 187 ± 18 μM, and h = 1.77 ± 0.27. In contrast to other quinoprotein amine dehydrogenases and oxidases that exhibit anomalously large primary kinetic isotope effects on the rate of reduction of the quinone cofactor by the amine substrate, no significant primary kinetic isotope effect was observed for this reaction of PlGoxA. The absorbance spectrum of glycine-reduced PlGoxA exhibits features in the range of 400-650 nm that have not previously been seen in other quinoproteins. Thus, in addition to the unusual structural features of PlGoxA, the kinetic and chemical reaction mechanisms of the reductive half-reaction of PlGoxA appear to be distinct from those of other amine dehydrogenases and amine oxidases that use tryptophylquinone and tyrosylquinone cofactors.

    Organizational Affiliation: 

    Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida , Orlando, Florida 32827, United States.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GoxAB [auth A],
A [auth B],
C,
D		816Pseudoalteromonas luteoviolacea DSM 6061Mutation(s): 0 
Gene Names: N475_19905
UniProt
Find proteins for A0A161XU12 (Pseudoalteromonas luteoviolacea DSM 6061)
Explore A0A161XU12 
Go to UniProtKB:  A0A161XU12
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A161XU12
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TRQ
Query on TRQ		A [auth B],
B [auth A],
C,
D		L-PEPTIDE LINKINGC11 H10 N2 O4TRP
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.843α = 90
b = 93.236β = 94.88
c = 188.457γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2017-12-21 
  • Released Date: 2018-02-14 
    • Deposition Author(s): Yukl, E.T., Avalos, D.

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-14
    Type: Initial release
  • Version 1.1: 2018-02-28
    Changes: Database references