Page 138 - Color Atlas of Biochemistry

Energy Metabolism 129

A. Photosynthesis: overview

Phytol residue Hexose

N A
P
H
12 NADPH + H
CH 2
H 3 C CH
H N CH 3
O H 3 C
N Mg N A
C PP P
O “Dark
H N
H CH 2 CH 3 2+ H 18 ATP reactions”
Mg
O C (Calvin
CH 3
O O cycle)
H 3 C A
P P P
Chlorophyll a 3 O 2 12 H 18 ADP + P i
N A
Electron flow P
6 H O
2
Proton flow 12 NADP 6 CO 2

Cytoplasm Nucleus
Outer Thylakoid Lumen
membrane
Inner
membrane
1 µm Plasma
membrane

Stroma Granum Chloroplast Vacuole

B. Light reactions

A nH A
P P PP P N A
Stroma P ATP P
2 NADPH + H
Thylakoid membrane
N A
1
P
Lumen
NADP

Ferredoxin (Fd)
2 H 2 H
H O [O] Mg 2+
2
Light Photosystem I

Plasto-
quinone Ferredoxin-
1
Plasto- NADP -
Mg 2+ Q cyanin reductase
QH 2 (PC) 1.18.1.2

2 ATP synthase
3.6.1.34
Photosystem II 2 H Cytochrome b/f complex

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
All rights reserved. Usage subject to terms and conditions of license.