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Figure 6 | BMC Microbiology

Figure 6

From: Microbial iron management mechanisms in extremely acidic environments: comparative genomics evidence for diversity and versatility

Figure 6

Model for phosphate/phosphonate associated Fe(III) uptake in Acidithiobacilli and Leptospirilla. (A) Partially conserved gene cluster in all three Acidithiobacilli coding for a FecA3 TonB-dependent receptor, the biopolymer transport system ExbBDTonB, a surface layer protein (SLP) and an alkaline phosphatase (PhoD). (B) Partially conserved gene cluster in all three Leptospirilla coding for orthologous TonB-dependent receptors (FecA9), the biopolymer transport system ExbBDTonB, a phosphate activated transcriptional regulator (PhoB) and a surface layer protein (SLP). Colors in the membrane model correspond to genes in the gene context scheme. AT: A. thiooxidans. AF: A. ferrooxidans. AC: A. caldus. LIIa: Leptospirillum sp. Group II UBA. LIIb: Leptospirillum sp. Group II 5-way GC. LIII: Leptospirillum sp. Group III 5-way GC.

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