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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 porA and porB, each encoding a β-porphyranase.[2] β-porphyranaseporA and porB are catalytic enzymes that hydrolyze the β-D-galactopyranose (1→4) α-L-galactopyranose-6-sulfate linkage in porphyran.[3] There is a 35% sequence similarity between β-Porphyranase-B and β-Porphyranase-A. [3] Horizontal gene transferOrthologs 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
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