Figure 4 | Scientific Reports

Figure 4

From: Gram-positive bacteria control the rapid anabolism of protein-sized soil organic nitrogen compounds questioning the present paradigm

Figure 4

The suggested routes of microbial turnover of large organic N in soil. The suggested route over 14 days of protein-size (> 100 kDa) organic N turnover via gram-positive (G +) exo-enzymatic depolymerization to peptides directly assimilated by gram-positive bacteria with direct gram-positive bacterial uptake of organic N compounds above the present 0.6 kDa molecular size threshold. Gram-negative (G −) bacteria rely on organic N compounds below the 0.6 kDa molecular size threshold and are thus dependent on exo-enzymatic actions releasing lower molecular size organic N compounds.

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