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Aggregate of a peptide-containing block copolymer with a lipase

✍ Scribed by Kensuke Naka; Rie Yamashita; Tohru Nakamura; Akira Ohki; Shigeru Maeda; Keigo Aoi; Kaname Tsutsumiuchi; Masahiko Okada

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
311 KB
Volume
17
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

The peptide‐containing block copolymer poly(N‐acetyliminoethylene)‐block‐poly(L‐phenylalanine) (1) formed large water‐soluble aggregates in water due to the hydrophobic and hydrogen‐bonding character of the poly(L‐phenylalanine) block. The solution properties of 1 were compared with those of the block copolymer poly(N‐acetyliminoethylene)‐block‐poly(N‐benzoyliminoethylene) (2) with an analogous structure. 1 formed aggregates even though the poly(phenylalanine) segment was short as compared with 2 in which hydrophobic interaction may be the only driving force to form aggregates. The aggregates have strong capability of incorporating Lipase P and largely increase the hydrolysis activity against p‐nitrophenyl propionate as compared with that of free Lipase P.

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