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: Bacteroidota
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.

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. S2CID 2820027.
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