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  2. Iron-oxidizing bacteria - Wikipedia

    en.wikipedia.org/wiki/Iron-oxidizing_bacteria

    The anoxygenic phototrophic iron oxidation was the first anaerobic metabolism to be described within the iron anaerobic oxidation metabolism. The photoferrotrophic bacteria use Fe 2+ as electron donor and the energy from light to assimilate CO 2 into biomass through the Calvin Benson-Bassam cycle (or rTCA cycle) in a neutrophilic environment (pH 5.5-7.2), producing Fe 3+ oxides as a waste ...

  3. Efflux pump - Wikipedia

    en.wikipedia.org/wiki/Efflux_pump

    The ability of efflux systems to recognize a large number of compounds other than their natural substrates is probably because substrate recognition is based on physicochemical properties, such as hydrophobicity, aromaticity and ionizable character rather than on defined chemical properties, as in classical enzyme-substrate or ligand-receptor ...

  4. Enterobactin - Wikipedia

    en.wikipedia.org/wiki/Enterobactin

    Enterobactin (also known as enterochelin) is a high affinity siderophore that acquires iron for microbial systems. It is primarily found in Gram-negative bacteria, such as Escherichia coli and Salmonella typhimurium. [1] Enterobactin is the strongest siderophore known, binding to the ferric ion (Fe 3+) with affinity K = 10 52 M −1. [2]

  5. Biosand filter - Wikipedia

    en.wikipedia.org/wiki/BioSand_Filter

    In laboratory studies, the biosand filter has been found to remove about 98-99% of bacteria. [7] In removal of Escherichia coli it was found that the biosand filter may increase due to biofilm formation over about two months. The removal after this time ranged from 97-99.99% depending on the daily water volume and percent primary effluent added.

  6. Sterilization (microbiology) - Wikipedia

    en.wikipedia.org/wiki/Sterilization_(microbiology)

    Microorganisms growing on an agar plate. Sterilization (British English: sterilisation) refers to any process that removes, kills, or deactivates all forms of life (particularly microorganisms such as fungi, bacteria, spores, and unicellular eukaryotic organisms) and other biological agents (such as prions or viruses) present in fluid or on a specific surface or object. [1]

  7. Siderophore - Wikipedia

    en.wikipedia.org/wiki/Siderophore

    Once within the plant, the bacteria need to be able to scavenge iron from the two main iron-transporting ligands, nicotianamine and citrate. [44] To do this they produce siderophores, thus the enterobacterial Erwinia chrysanthemi produces two siderophores, chrysobactin and achromobactin. [ 45 ]

  8. Here’s the last day to send your gifts in time for the holidays

    www.aol.com/last-day-send-gifts-time-143042135.html

    US Postal Service employees work inside the Los Angeles Mail Processing & Distribution Center on December 3. The facility is currently processing 1 million packages per day. (Mario Tama/Getty Images)

  9. Dissimilatory metal-reducing microorganisms - Wikipedia

    en.wikipedia.org/wiki/Dissimilatory_metal...

    Dissimilatory metal-reducing microorganisms are a group of microorganisms (both bacteria and archaea) that can perform anaerobic respiration utilizing a metal as terminal electron acceptor rather than molecular oxygen (O 2), which is the terminal electron acceptor reduced to water (H 2 O) in aerobic respiration. [1]

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