Zobellia galactanivorans

Zobellia galactanivorans is a gram-negative marine bacterium isolated from the surface of red algae of the coast of France. Z. galactanivorans forms yellow colonies with a bacillus or diplobacillus morphology. Furthermore, it is mesophilic and can grow degrade carrageenans and agars - both found in the cell wall of red algae.[1] Z. galactanivorans contains the gene porB which encodes the enzyme β-porphyranase-B.[2]

Zobellia galactanivorans
Scientific classification
Domain: Bacteria
Phylum: Bacteroidetes
Class: Flavobacteriia
Order: Flavobacteriales
Family: Flavobacteriaceae
Genus: Zobellia
Species:
Z. galactanivorans
Binomial name
Zobellia galactanivorans
Barbeyron et al., 2001

Function of β-porphyranase-B

β-porphyranase-B is a catalytic enzyme that hydrolyzes the β-D-galactopyranose (1→4) α-L-galactopyranose-6-sulfate linkage in porphyran.[3]

Comparison of β-Porphyranase-B and β-Porphyranase-A

There is a 35% sequence similarity between β-Porphyranase-B and β-Porphyranase-A. [3] Furthermore, orthologs between Z. galactanivorans and Bacteroides plebeius-1698, a strain of Bacteroides plebeius, contain a sequence similarity of 48%-69%.[3] Homologous genes between other Bacteroides species only have a 30% sequence similarity.[3] Moreover, porphyranase genes in both Z. galactanivorans and B. plebeius are located in similar orders along their chromosome, or are syntenic.

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References
  1. Barbeyron T, L'Haridon S, Corre E, Kloareg B, Potin P (May 2001). "Zobellia galactanovorans gen. nov., sp. nov., a marine species of Flavobacteriaceae isolated from a red alga, and classification of [Cytophaga] uliginosa (ZoBell and Upham 1944) Reichenbach 1989 as Zobellia uliginosa gen. nov., comb. nov". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 3): 985–97. doi:10.1099/00207713-51-3-985. PMID 11411725.
  2. Hehemann JH, Correc G, Thomas F, Bernard T, Barbeyron T, Jam M, Helbert W, Michel G, Czjzek M (August 2012). "Biochemical and structural characterization of the complex agarolytic enzyme system from the marine bacterium Zobellia galactanivorans". The Journal of Biological Chemistry. 287 (36): 30571–84. doi:10.1074/jbc.M112.377184. PMC 3436304. PMID 22778272.
  3. Hehemann JH, Correc G, Barbeyron T, Helbert W, Czjzek M, Michel G (April 2010). "Transfer of carbohydrate-active enzymes from marine bacteria to Japanese gut microbiota". Nature. 464 (7290): 908–12. Bibcode:2010Natur.464..908H. doi:10.1038/nature08937. PMID 20376150.
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