putative oxidoreductase of pyridinic nucleotide-disulfide bounds
and ferritin A. Sigma 54 protein was also identified among the
proteins released by BT.
Other proteins were found in E: ATP-binding ABC transporter;
magnesium chelatase; choloylglycine hydrolase and proteins
related to the EmbdeneMeyerhofeParnas pathway or to the synthesis
of aminoacids and of purines. Major OM structural proteins
of BT such as OmpA, SusC or SusD were not found in the gels.
3.4. In vitro antioxidative effect of the extract against hydrogen
peroxide
The extract showed an inhibitory effect against hydrogen
peroxide in a concentration-dependent manner (Fig. 3). H2O2 was
incubated with 6 different extracts at the mean concentration of
9.5 0.4 nmol of H2O2 mL1 of reaction mixture. The H2O2 inhibition
by E was statistically significant from 37.5 mg of proteins
mL1 (p ¼ 0.05). This inhibition was still significant at the 1% level
from the protein concentration of 62 mg mL