Büllesbach E E, Schwabe C
Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston.
Int J Pept Protein Res. 1990 May;35(5):416-23.
Biotinylated porcine relaxins were synthesized and purified to homogeneity. Native porcine relaxin was reacted with biotinyl-epsilon-aminohexanoic acid-N-hydroxysuccinimide ester and the resulting mixture was separated by either ion exchange chromatography on CM-cellulose at pH 5.5 or reversed-phase high performance liquid chromatography. All four possible monosubstituted relaxin derivatives, with substitutions in N alpha A1, N epsilon A7, N epsilon A16, and N epsilon B8, were obtained. All derivatives were fully biologically active and comparative circular dichroism spectroscopy showed no significant differences in their secondary structure.
