... Esipova N.G. , Lobachev V.M. , Tumanyan V.G. , Davidova L.I. 1 , Fedoruk K.V. 1 , Bogush V.G. 1 , Debabov V.G. 1 . ... CD-study of the recombinant proteins of spidroin I and spidroin II type recovers poly-lproline II left-helical conformation as basic structure of this protein. This type conformation was found for the first time in b-structural silks. We observe isobestic point at the CD-curves of water solutes of the recombinant proteins at various concentrations. ... 2007 Biophysics dep., ...