bacteriochlorophyll


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bacteriochlorophyll

[bak¦tir·ē·ə′klȯr·ə‚fil]
(biochemistry)
C52H70O6N4Mg A tetrahydroporphyrin chlorophyll compound occurring in the forms a and b in photosynthetic bacteria; there is no evidence that b has the empirical formula given.
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The basic structure of geoporphyrins, especially those with an exocyclic ring in the southern part of the molecule, is strongly suggestive of origin from chlorophylls and bacteriochlorophylls, which are major photosynthetic pigments of photoautotrophs.
The origin of Cretaceous black shales: a change in the surface ocean ecosystem and its triggers

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