bacterial photosynthesis lecture...

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Bacterial Photosynthesis Lecture 9‹header› 1 Fig. 5.23c Reactions involved in Photosynthesis Light reactions or phase: Dark reactions or phase: Calvin Benson Cycle (C 3 pathway, photosynthetic carbon cycle, reductive pentose phosphate pathway) Reverse (reductive) Krebs (TCA) cycle Hydroxypropionate pathway Oxygenic- ATP and NAD(P)H Anoxygenic- purple primarily ATP; green- sulfur/heliobacteria can generate ATP and reducing power CO 2 fixation

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Page 1: Bacterial Photosynthesis Lecture 9‹header›faculty.washington.edu/jclara/410/Handouts/HOPhotosyn_07.pdfBacterial Photosynthesis Lecture 9‹header› 1 Fig. 5.23c Reactions involved

Bacterial PhotosynthesisLecture 9‹header›

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Fig. 5.23c

Reactions involved in Photosynthesis

Light reactions or phase:

Dark reactions or phase:Calvin Benson Cycle (C3 pathway, photosyntheticcarbon cycle, reductive pentose phosphate pathway)Reverse (reductive) Krebs (TCA) cycle

Hydroxypropionate pathway

Oxygenic- ATP and NAD(P)HAnoxygenic- purple primarily ATP; green-sulfur/heliobacteria can generate ATP and reducingpower

CO2 fixation

Page 2: Bacterial Photosynthesis Lecture 9‹header›faculty.washington.edu/jclara/410/Handouts/HOPhotosyn_07.pdfBacterial Photosynthesis Lecture 9‹header› 1 Fig. 5.23c Reactions involved

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Fig. 17.8

β-carotene (carotenoid)Isoprenoids:

Primary function: photoprotective role

Tetrapyrroles:

Bile pigments

Fig. 17.10

phycobiliproteinsphycobilisomes

cyanobacteriared algae

Fig. 17.10b

Phycobilisome Tetrapyrrole: Porphyrins

Fig. 17.3a

succinyl-CoA

Plants, algae, cyanobacteria Purple, green-sulfur, heliobacteria

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Arrangement of light-harvestingchlorophylls/bacteriochlorophylls

excitons

Reaction center chlorophylls/bacteriochlorophyllsFig. 17.6

Antenna pigments

Complexes of 50-300 molecules

Fig. 17.5

Chloroplast

Bacterial Photosynthetic Apparatus

heliobacteria

Chlorosome of Green-sulfur Bacteria

Page 4: Bacterial Photosynthesis Lecture 9‹header›faculty.washington.edu/jclara/410/Handouts/HOPhotosyn_07.pdfBacterial Photosynthesis Lecture 9‹header› 1 Fig. 5.23c Reactions involved

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Anoxygenic photosyn.one photosystem(purple)

Fig. 17.4

Bacteriopheophytine-

Electron Flow in Purple Bacteria

Fig. 17.15

Organization of e-

carriers in purple bacteria

AnoxygenicPhotosynthesis (purple)

Fig. 17.4

H2---> NAD(P)Hhydrogenase

Electron Flow in Purple Bacteria

Lactate orsuccinate (e-)

Fig. 17.18

H2S ---> So

(H2S, So, S2O3-2,

Fe+2) H2S2O3

-2---> SO4-2

NADH

Page 5: Bacterial Photosynthesis Lecture 9‹header›faculty.washington.edu/jclara/410/Handouts/HOPhotosyn_07.pdfBacterial Photosynthesis Lecture 9‹header› 1 Fig. 5.23c Reactions involved

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Oxygenic Photosynthes

Fig. 17.19

Fig. 17.22

Calvin-Benson Cycle

phosphoribulokinase

Ribulose bisphosphatecarboxylase (RubisCO)