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TRANSCRIPT
Photosynthesis
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O
O
O
O
OH
O OH O
OH
O
H2N
O
Venturicidin A
Calvin Cycle and Carbon Fixation Ribulose
1,5-Bisphosphatecarboxylase/oxygenase
(RuBisCO)
Phosphoglyceratekinase
ATP(x2)
Ribulose1,5-Bisphosphate
3-Phosphoglycerate(x2)
ADP(x2)
1,3-Bisphospho-glycerate(x2)
CO2
Glyceraldehyde3-Phosphate
(x2)
Ribulose5-Phosphate
NADPH(x2)
NADP(x2)
ATP
ADP
SeveralHexoseMonosphosphatePathway-likeReactions
CO2
Ribulose5-PhosphateKinase
Glyceraldehyde3-PhosphateDehydrogenase
Carbon fixation
Carbon assimilation
Ribulose-1,5-BisphosphateRegeneration
Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase (Rubisco) Carboxylase activity
H2OH2C
CO
CH OH
CH OH
H2C O
O
PO O
PO O
O
O
Ribulose1,5-bisphosphate
HH2C
CO
C OH
CH OH
H2C O
O
PO O
PO O
O
O
Enediolintermediate
O C
H+
OH2C
CHO
C O
CH OH
H2C O
O
PO O
PO O
O
O
-Ketoacidintermediate
CO
C O
CH OH
H2C O
PO O
O
O
3-Phosphoglycerate
OH2C
CHO
C OH
CH OH
H2C O
O
PO O
PO O
O
O
Hydratedintermediate
CO
O
HO
C O
CH OH
H2C O
PO O
O
O3-Phosphoglycerate
Carbon Assimilation
2 x NADP+
2 x Pi
C
C
CH2 O
OH
OHH
PO O
O
2 x Glyceraldehyde
3-phosphate
O
PO O
O
C
C
CH2 O
O
OHH
PO O
O2 x
1,3-Bisphospho-glycerate
Glyceraldehyde-3-phosphate
dehydrogenase
2 x ATP 2 x ADPO
C
C
CH2 O
O
OHH
PO O
O
2 x3-Phospho-glycerate
Phosphoglyceratekinase
H2C
CO
CH OH
CH OH
H2C O
O
PO O
PO O
O
O
Ribulose1,5-bisphosphate
H2O+ CO2
Rubisco
2 xNADPH
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HOO
OH
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CH2
n
HOO
OH
OH
O
CH2
O
OH
OH
CH2
( -1,4-glucoside polymerwith -1,6-glucoside
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-1,6-Glucosidebond
Starch (amylopectin)
O
HOO
OH
OH
OH
CH2
HOO
OH
OH
OH
CH2
O
Dihydroxyacetonephosphate
Triose phosphateisomerase
Transaldolase
Fructosebisphosphatase
Phospho-glucomutase
ADP-glucosepyrophosphorylase
Starchsynthase
Fructose-6-phosphate
P
O
O
O O O
O
OH
CH2
OH
CH2 OH
P
O
O
O OO OH
OH
OH
OH
CH2
Glucose-6-phosphate
PhosphoglucoisomeraseFructose-1,6-bisphosphate
P
O
O
O OP
O
O
O O O
O
OH
CH2
OH
CH2
H H
HOO
OH
OH
OH
CH2
C
C
CH2 O
OH
OHH
PO O
O
Glyceraldehyde3-phosphate CH2
C
C
O
O
HO H
PO O
O
H
Pi
O P
OH
O
OH
-Glucose-1-Phosphate
O
O
OHOH
CH2O
N
N N
N
NH2
P
O
O
AdenosineTriphosphate(ATP)
P
O
O
O
O
OCH2O
N
N N
N
NH2
P
O
O
ADP-Glucose
P
OH
O
O
P
O
O
OOP
O
O
OP
O
O
O
Pyrophosphate
HOO
OH
OH
OH
CH2
HOO
OH
OH
O
CH2
n
OH OH
HOO
OH
OH
OH
CH2
HOO
OH
OH
O
CH2
n
HOO
OH
OH
O
CH2HOO
OH
OH
OH
CH2
ADP
Starch
ATP/Reducing Equivalent and Triose Transport
Chloroplast Inner Membrane
3-Phospho-glycerate
1,3-Bisphospho-glycerate
Dihydroxyacetonephosphate
Glyceraldehyde3-phosphate
NADP+ Pi
NADH ATPADP
Triose phosphateisomerase
Phosphoglyceratekinase
Glyceraldehyde3-phosphate
dehydrogenase
NAD+ Pi
Triose phosphate/PhosphateExchanger
Triose phosphate/PhosphateExchanger
Pi
Pi
Pi
Pi
3-Phospho-glycerate
1,3-Bisphospho-glycerate
Dihydroxyacetonephosphate
Glyceraldehyde3-phosphate
NADPH ATPADP
Phosphoglyceratekinase
Glyceraldehyde3-phosphate
dehydrogenaseTriose phosphate
isomerase
Cytosol
Stroma
Glycolysis
Sucrose synthesis
HO
O
OH
OH
OH
CH2
HO O
O
OH
CH2
CH2 OH
H
O
-D-Fructofuranoside
-D-Glucopyranosyl
Sucrose(1- -D-glucopyranosido--D-fructofuranoside
Rubisco (Oxygenase Reaction)
H2C
CO
CH OH
CH OH
H2C O
O
PO O
PO O
O
O
Ribulose1,5-bisphosphate
HH2C
CO
C OH
CH OH
H2C O
O
PO O
PO O
O
O
Enediolintermediate
H2C
CHO
C O
CH OH
H2C O
O
PO O
PO O
O
O
Hydroperoxyintermediate
O OO OH
H+ H2C
C
O
PO O
O
O
C O
CH OH
H2C O
PO O
O
O
O
Phosphoglycolate
3-Phosphoglycerate
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C
O
PO O
O
O
O
Phosphoglycolate
H2C
C
OH
O
O
Glycolate
H2C
C
OH
O
O
Glycolate
O2 H2O2
Glycolateoxidase
HC
C
O
O
O
Glyoxalate
CH2C O
O
Glycine
NH3CH2
C O
O
Glycine
NH3
CH2
C O
O
Glycine
NH3
+
NAD
NADH+ NH3+ CO2
CH
C O
O
Serine
NH3H2C
Glycinedecarboxylase
Serineaminotransferase
C
C O
O
Hydroxy-pyruvate
H2C
OC O
CH OH
H2C O
PO O
O
O
3-Phosphoglycerate
C O
CH OH
H2C OH
O
Glycerate
NAD NADH
-Hydroxyacidreductase
MitochondrionPeroxisomeChloroplast
C O
CH OH
H2C OH
O
Glycerate
Glyceratekinase
ATPADP
OHOH
CH
C O
O
Serine
NH3
H2C
OH
Phosphoglycolatephosphatase
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CH OH
CH OH
H2C OH
2-Carboxyarabinitol-1-phosphate
C
O
PO O
O
O
O
CH2CHO
C O
CH OH
H2C O
PO O
PO O
O
O
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O
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