A 3,6-anhydro-D-galactosidase produced by Zobellia galactanivorans. This is an exo-lytic enzyme that hydrolyzes terminal 3,6-anhydro-D-galactose from the non-reducing end of carrageenan oligosaccharides.

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.147 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Carrageenan catabolism is encoded by a complex regulon in marine heterotrophic bacteria.

Ficko-Blean, E.Prechoux, A.Thomas, F.Rochat, T.Larocque, R.Zhu, Y.Stam, M.Genicot, S.Jam, M.Calteau, A.Viart, B.Ropartz, D.Perez-Pascual, D.Correc, G.Matard-Mann, M.Stubbs, K.A.Rogniaux, H.Jeudy, A.Barbeyron, T.Medigue, C.Czjzek, M.Vallenet, D.McBride, M.J.Duchaud, E.Michel, G.

(2017) Nat Commun 8: 1685-1685

  • DOI: https://doi.org/10.1038/s41467-017-01832-6
  • Primary Citation of Related Structures:  
    5OLC, 5OPQ

  • PubMed Abstract: 

    Macroalgae contribute substantially to primary production in coastal ecosystems. Their biomass, mainly consisting of polysaccharides, is cycled into the environment by marine heterotrophic bacteria using largely uncharacterized mechanisms. Here we describe the complete catabolic pathway for carrageenans, major cell wall polysaccharides of red macroalgae, in the marine heterotrophic bacterium Zobellia galactanivorans. Carrageenan catabolism relies on a multifaceted carrageenan-induced regulon, including a non-canonical polysaccharide utilization locus (PUL) and genes distal to the PUL, including a susCD-like pair. The carrageenan utilization system is well conserved in marine Bacteroidetes but modified in other phyla of marine heterotrophic bacteria. The core system is completed by additional functions that might be assumed by non-orthologous genes in different species. This complex genetic structure may be the result of multiple evolutionary events including gene duplications and horizontal gene transfers. These results allow for an extension on the definition of bacterial PUL-mediated polysaccharide digestion.

  • Organizational Affiliation

    Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, Roscoff, Bretagne, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
693Zobellia galactanivoransMutation(s): 0 
Gene Names: zobellia_3152
Find proteins for G0L004 (Zobellia galactanivorans (strain DSM 12802 / CCUG 47099 / CIP 106680 / NCIMB 13871 / Dsij))
Explore G0L004 
Go to UniProtKB:  G0L004
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG0L004
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on TRS

Download Ideal Coordinates CCD File 
G [auth A],
J [auth B],
M [auth C],
N [auth C],
Q [auth D]
C4 H12 N O3
Query on MPD

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
I [auth B],
L [auth C],
P [auth D]
C6 H14 O2
Query on CL

Download Ideal Coordinates CCD File 
H [auth A],
K [auth B],
O [auth C],
R [auth D]
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.147 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 222α = 90
b = 107.5β = 114
c = 165.8γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-14-CE19-0020-01

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-29
    Type: Initial release
  • Version 1.1: 2019-10-16
    Changes: Data collection