Description and references
A lysine polypeptide or homopolymer, the chain
length of which varies with the method of prepn. Prepn: Katchalski et al., J. Am. Chem. Soc. 69, 2564 (1947); 70, 2094 (1948); Fasman et al., ibid. 83, 709 (1961); Sela et al., Biopolymers 1, 517 (1963); Strojny, White, US 3215684 (1965 to Dow). For structure see Lysine.
Derivative
l-Form hydriodide.
Properties
Average dp (or n) = 32. Transparent, solid, film-like
polymer. Readily sol in water; practically insol in the usual organic
solvents. Transition of high-mol-wt poly-l-lysine (dp 1500)
in aq soln from a helical to a randomly coiled conformation under
the influence of decreasing pH or increasing temp: Applequist, Doty, C.A. 58, 6925b (1963).