The Microbial World :: A look at all things small

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9-1 Introduction
9-2 Photosynthetic microbes have several common characteristics
9-3 Light is collected by protein complexes containing photopigments
9-4 Chlorophyll is the molecule that collects light and energizes an electron, while carotenoid protects the cell from the damaging effects of light
9-5 The placement of the photopigments is important in the performance of their function
9-6 Light energy is focused at the reaction center
9-7 Photosynthetic microorganisms are classified as oxygenic and anoxygenic
9-8 Purple bacteria are anoxygenic photosynthetics that are metabolically versatile
9-9 Purple bacteria house their photosynthetic apparatus in intracytoplasmic membranes
9-10 The reaction center of purple bacteria is made of three polypeptides and contains many photopigments
9-11 Three systems regulate photosynthesis in the purple bacteria
9-12 The green bacteria are anoxygenic photosynthetics that form a chlorosome
9-13 The reaction center in green bacteria contains an iron-sulfur center
9-14 The cyanobacteria perform oxygenic photosynthesis
9-15 Cyanobacteria contain two reaction centers
9-16 Photosynthesis in cyanobacteria is constitutively expressed
9-17 The energy generated by photosynthesis is used to drive the dark reactions
9-18 Summary

The Microbial World