Ecological Aerobic Ammonia and Methane Oxidation Involved Key Metal Compounds, Fe and Cu.

Most methanotrophs produce Mb to facilitate copper uptake, maintain Cu homeostasis, and protect against the toxic effects of high Cu concentration ( I M. trichosporium i OB3b on 10 µM Cu) [[98]]. The chelation of copper forms the Cu-Mb complex, which is a copper uptaking strategy of MOB in copper-limited conditions [[97]]. In the culture of I Methylococcus capsulatus i Bath, pMMO facilitates CH SB 4 sb oxidation in the cytoplasm when Cu/cell ratios are high (increased from 0 to 55 µM of Cu), while sMMO is activated in the periplasmic membrane space when Cu/cell ratios are low (decreased to 0 µM of Cu) because of different expression patterns (see above). Keywords: ammonia and methane oxidation; monooxygenase; copper; iron; methanobactin; siderophore EN ammonia and methane oxidation monooxygenase copper iron methanobactin siderophore 1806 18 11/17/22 20221101 NES 221101 1. On the other hand, Cu-chelating Mb also played a critical role in maintaining Cu homeostasis and protection against the potentially toxic effects of a high Cu concentration ( I M. trichosporium i OB3b on 10 µM copper) (see Figure 2) [[98]]. [Extracted from the article]