Microbial Transformation of Phthalate Esters: Diversity of Hydrolytic Esterases - Environmental Contamination: Health Risks and Ecological Restoration - page 331

COOH

(B)

(A)

COOH

OH

COOH

OH

HOOC
HOOC

(I)

OH HOOC

OH

(IX)

(II)

O

COOH

HOOC
HOOC

(X)

H

O COOH

HO

(III)

Succinate+CO 2 + acetyl CoA

COOH

O O

(IV)

COOH

COOH

COOH

HO

HOOC HOOC

O COOH

O COOH

(V)

(VI)

COOH

CH 3

O

O COOH

COOH

(VIII)

(VII)

FIGURE 15.4
The.degradation.pathway.of.protocatechuate..(A). A. keyseri .12B.(From.Eaton,.R.W.,. J. Bacteriol .,.
183(12),. 3689,.2001.). and. P. testosteroni . (From. Keyser,. P.. et. al.,. Environ. Health Perspect .,. 18,.159,.
1976.). degradation. pathway;. (B). P. luorescens . (From. Keyser,. P.. et.al.,. Environ. Health Perspect .,.
18,. 159,. 1976). degradation. pathway.. (I). protocatechuate;. (II). 2-hydroxy-4-carboxymuconic.
semialdehyde;.(III).2-hydroxy-4-carboxymuconic.semialdehyde-hemiacetal;.(IV).2-pyrone-4,6-
dicarboxylate;.(V).4-oxalomesaconate;.(VI).4-oxalocitramalate;.(VII).oxaloacetate;.(VIII).pyru-
vate;.(IX).3-carboxy- cis ,. cis -muconate;.and.(X).β-ketoadipate.