He also solved early structures of the thermophilic bacterial enzyme thermolysin, the helix-turn-helix DNA-binding transcription factor lambda Cro repressor, and the light-antenna bacteriochlorophyll protein.
22.
CobT, too, has been found to be remotely related to the third subunit of Mg-chelatase, BchD ( involved in bacteriochlorophyll synthesis, e . g ., in Rhodobacter capsulatus ).
23.
After the exhaustion of oxygen, " R . rubrum " immediately starts the production of photosynthesis apparatus including membrane proteins, bacteriochlorophylls and carotenoids, i . e . the bacterium becomes photosynthesis active.
24.
"' Magnesium-chelatase "'is a three-component enzyme that catalyses the insertion of Mg 2 + into protoporphyrin IX . This is the first unique step in the synthesis of bacteriochlorophyll.
25.
When light is absorbed by the reaction center, P840 enters an excited state with a large negative reduction potential, and so readily donates the electron to bacteriochlorophyll 663 which passes it on down the electron chain.
26.
To keep things simple, let's take a closer look at the chlorophylls ( which, strictly speaking, should be called bacteriochlorophylls, since they differ slightly from the pigments in algae or green plants ).
27.
But, Prince points out, " the proteins hold the bacteriochlorophylls far apart from one another and in such a way that they don't easily transmit energy back and forth to one another ."
28.
The first strain descriptions appeared in 1991 which described members " Roseobacter " " litoralis " and " Roseobacter " " denitrificans ", both pink-pigmented bacteriochlorophyll a-producing strains isolated from marine algae.
29.
In contrast, anoxygenic photosynthetic bacteria have a substance called bacteriochlorophyll-which absorbs predominantly at non-optical wavelengths-for light-energy capture, live in aquatic environments, and will, using light, oxidize chemical substances such as hydrogen sulfide rather than water.
30.
""'Blastomonas aquatica " "'is a Gram-negative, bacteriochlorophyll-containing and aerobic bacteria from the genus of Blastomonas which has been isolated from the Lake Peng Co and the Lake Namtso from the Tibetan Plateau in China.
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