Abstract
The HMIQ3c1 recombinant peptide (6434 Da), the Kunitz-type protease inhibitor, which belonged to the new group of the IQ-peptides from the Heteractis magnifica sea anemone was prepared. The inhibitory constant of trypsin by this peptide proved to be 5.0 × 10–8 M. rHMIQ3c1 was shown to have no interaction with eight isoforms of Kv1 channels. This peptide exhibited neuroprotective activity in a concentration of 10 μM, and the peptide increased the viability of cells of the Neuro2a murine neuroblastoma by 39.4 ± 6.6% in the presence of β-amyloid. However, the peptide did not influence the viability of the cells during their incubation with 6-hydroxydofamine.
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