CATABOLICREACTION
CHEMICALREACTION
ANABOLICREACTION
FUNCTIONALGROUP
PHOSPHATEGROUP
HYDROXYLGROUP
CARBOXYLGROUP
METHYLGROUP
METABOLISM
AMINOGROUP
REACTANT
PRODUCT
BUFFER
ACID
BASE
Y
A
E
R
S
P
H
O
S
P
H
A
T
E
G
R
O
U
P
I
T
U
F
A
G
W
N
E
J
L
E
U
I
I
X
O
X
M
U
I
A
V
E
H
N
A
B
U
B
O
C
N
F
Y
Z
V
J
T
U
I
I
I
A
E
K
L
O
B
U
O
S
S
I
L
J
P
S
Z
U
T
C
U
D
O
R
P
U
X
I
T
K
A
S
L
A
T
B
U
F
F
E
R
K
D
I
R
U
D
O
J
T
S
V
E
I
G
Q
E
C
P
B
L
T
P
A
O
V
Z
K
O
T
O
C
I
A
P
U
O
R
G
L
A
N
O
I
T
C
N
U
F
I
E
N
A
A
Y
W
L
E
T
H
P
S
K
E
Z
R
O
I
T
Y
R
U
O
U
U
E
S
A
E
O
X
I
E
O
C
Z
R
K
P
D
Y
V
M
I
I
H
N
R
R
S
A
K
E
D
G
K
H
H
X
C
O
N
B
G
T
H
O
O
C
L
R
O
U
I
Z
Y
A
U
T
Y
C
B
I
E
X
C
R
Z
P
A
O
A
A
P
J
F
I
M
I
V
A
D
M
M
E
L
A
U
C
E
R
T
A
C
A
U
L
C
A
G
E
N
U
R
G
N
S
E
O
E
I
B
H
F
A
I
F
O
U
A
B
E
A
T
V
O
E
E
R
I
C
B
O
S
T
I
W
M
Q
R
L
M
Y
A
E
U
H
X
F
C
O
M
L
X
A
N
A
A
O
E
Q
G
C
U
H
W
Y
E
D
Y
I
Y
T
S
Y
O
A
T
B
L
U
H
B
O
X
D
A
Q
R
Y
D
L
L
E
M
L
A
T
B
O
A
Y
Z
C
E
N
M
K
K
S
O
K
O
G
O
G
G
G
C
O
S
A
I
C
O
O
A
I
I
P
E
O
A
B
I
R
Z
R
R
A
E
U
L
U
T
E
G
C
Q
M
I
B
O
U
A
Y
M
O
O
A
E
O
V
U
Y
O
O
E
Z
Y
U
A
C
C
U
N
S
G
X
U
A
R
V
K
U
E
F
E
E
D
M
R
A
T
Y
U
A
K
H
U
P
P
E
B
E
G
E
P
U
Q
F
I
M
