Catalases
are
efficient
scavengers
of H2O2
and
protect
cells
against
H2O2
stress.
Examination
of the H2O2
stimulon in
Saccharomyces
cerevisiae
revealed
that the
cytosolic
catalase T (Ctt1)
protein
level
increases
15-fold on H2O2
challenge
in
synthetic
complete
media
although
previous
work
revealed
that
deletion
of the CCT1 or CTA1
genes