Erratum to: Mol Biol Rep (2012) 39:5181–5186 DOI 10.1007/s11033-011-1314-0

Due to an oversight, the authors omitted mention of the fact that their project received financial support from National Science Centre; number N N404 070933 based on decision number 0709/B/P01/2007/33. They regret the omission.