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Salt effects on the conformation of a ‘statistical’ copolymer of l-leucine and l-lysine

✍ Scribed by Gotthold Ebert; Yoshimitsu Kuroyanagi

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
679 KB
Volume
23
Category
Article
ISSN
0032-3861

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## Abstract The structure inducing properties of L‐leucine, L‐isoleucine, and L‐norleucine residues incorporated into poly(L‐lysine) were investigated by the observation of the circular dichroism of the respective random copolypeptides. The comparison involves the coil‐helix transition in water/met

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351 00 Padova, Ilaly synopsis Circular Dichroism measurements have been carried out on poly-L-lysine (PLL) and on random copolymers of lysine and phenylalanine a t various pH values and in the presence of different amounts of NaClOr. The results indicate that either the homopolymer or the copolymers

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The binding of the methylmercury cation CH3Hg+ by poly(L-glutamic acid) (PGA) and by poly(i-lysine) (PLL) has been investigated by b a n spectroscopy. Coordination on the side-chain COO-and NH; groups of these polypeptides gave characteristic ligand-Hg stretching modes at ca. 505 and 450 cm-', respe