Howard Florey Institute of Experimental Physiology and Medicine

Shanghai Institute of Biochemistry

Yu-Cang Du

Geoffrey W Tregear

Hugh D Niall

The invention is a class of memory enhancing peptides having the general formula:

Memory enhancing peptides

A method for the synthesis of porcine relaxin or modified forms or analogues thereof, which comprises the steps of reducing a mixed solution of the S-sulfonated A and B peptide chains, or modified forms or analogues thereof; precipitating the reduced peptides with acetone; washing the mixed peptides; oxidizing the mixed peptides in the presence of aqueous sodium chloride; and isolating the relaxin thus produced. Also claimed are modified forms and analogues of porcine relaxin analogues which comprise shortened forms of the natural B and/or A peptide chains, and/or in which one or both of A and B chains in the full length or shortened form has been chemically modified.

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Shanghai, China

Yu-Cang Du