Industrial Biotransformations

3.23
Peroxides
OOH
R R'
lipooxygenase
R
3.24 Isomers
Enzymes are capable of catalyzing peroxidation using O 2 or H 2O 2, as shown above,
usually in the allylic position [62].
3.24
Isomers
X = NH 2, OH
X H
R R'
R R'''
R'
R
R
R
R
O
R'''
OH
R'
NH2
X
R''
OH
R'
R'
R IV
R'
R''
X = C, N (R'''= single electron pair)
racemase or epimerase
cis-trans isomerase
interconverting
aldose and ketose
interconverting
keto-enol groups
double bond migration
mutase
(intramolecular transferase)
R
R'
H X
R R'
R R''
X
R' R'''
There are many isomerases in nature, which catalyze geometric, structural or stereochemical
changes. As yet, most have not been fully explored for chemical transformations
[63].
R
R
R
OH
R'''
NH 2
O
O
R'
R'
R'
R'
R IV
R''
85