Lecithin
/
(Phospholipase A)
Ca++
~
~
t%j
~
t:P
o
~
00
~
o
~
Iod
II:
o
00
Iod
II:
o
t"' 4
1-1
"'0
1-1
t::'
00
Fatty acid
Lysophosphatidic acid
Choline
Phosphatidic acid
\.
(Phospholipase A)
(Phospholipase D)
(Phosphatidic acid
phosphatase)
H
3 P0
4
Phosphorylcholine
Ca++
(Phospholipase C)
Diglyceride
/
"
/ /
,
'~
~
~
Phospholipid
Lipolytic
resynthesis
deacylation
Ca++
Fatty acid f
f
a-Lysolecithin
I(Phosphol ipase B)
Fatty acid
--1
a-Glycerylphosphorylcholine
~
(Glycerylphosphorylcholine
diesterase)
Choline
Mg++?
a-Glycerophosphoric acid
/
/
/
tt
Glycolysis
or
dephosphorylation
FIG.
2. Enzymes that can catalyze the hydrolytic degradation of lecithin.
t:-o
-:t
W