Fig. 3
From: Bacterial alginate metabolism: an important pathway for bioconversion of brown algae
Strategies for alginate utilisation. A The PUL system. This system is mainly employed by Bacteroidetes and Gammaproteobacteria alginate-degrading bacteria. B The scattered system. This is mainly present in Vibrio bacteria, and genes encoding alginate metabolism enzymes are distributed across the genome. C The pit transport system. This system is limited to Alphaproteobacteria strain Sphingomonas sp. A1 and its relatives. D The location of genes encoding alginate utilisation proteins. The algO gene in Sphingomonas sp. A1 encodes a transcriptional regulator