Bacteria comparative aspects

Koga Y., Nishihara M., Morii H., and Akagawa-MatsushitaM. (1993) Ether polar lipids of methanogenic bacteria structures, comparative aspects, and biosynthesis. Microbiol. Rev. 57, 164-182. 

This step is a direct hio-sulphidization reaction and it converts all the lead-containing salts and/or oxides in the paste into PbS by means of anaerobic bacteria. Compared to previously studied systems, this technology improves the required conversion reaction in terms of the technical and economical aspects. The overall process can be simplified and described by the following reactions ... 

The bacteria in the intestinal tract serve as another well-known source of luminal drug degradation [61], though this is only important for the colon region as the luminal concentration of bacteria is 104 to 109-fold higher in the colon compared with the small intestine. Thus, this aspect is only relevant for drugs that reach this region, for example, due to poor permeability, slow dissolution or delivery by modified-release formulations. Hydrolytic and other reductive reactions are predominantly mediated by bacterial enzymes, and a list of the most prominent types... 

The existence of the Archaea allows us to paint a far more convincing picture of LUCA. We can now compare the characteristics of three different domains of life. Archaea are obviously comparable to bacteria in that they lack a cell nucleus, and so are defined as prokaryotes. The organization of their genes is also similar to that of bacteria they have a single circular chromosome, they cluster groups of related genes into operons, and they carry little junk DNA. Other aspects of their organization, such... 

The relation of the structure and organization of the Photosystem II reaction centers to those from Photosystem I or from the green or purple bacteria presents an interesting example of comparative biochemistry. Similarities between PS II and purple bacterial reaction centers include aspects of the reaction center proteins, the stoichiometry of chlorophyll and pheophytin in the reaction center and the complex of iron with quinones as the primary electron acceptor. In each of these respects the reaction centers of PS I or green bacteria, however, have no obvious similarity. 

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