LOCAL ORDER IN POLY-ELECTROLYTIC SOLUTIONS DETECTED BY MAGNETIC BIREFRINGENCE MEASUREMENTS ON THE (TYR-GLU)N COPOLYMER

被引：10
作者：
MARET, G [1 ]
DOMARD, A [1 ]
RINAUDO, M [1 ]
机构：
[1] CTR RECH MACROMOLEC VEGETALES,F-38041 GRENOBLE,FRANCE
来源：
BIOPOLYMERS | 1979年 / 18卷 / 01期
关键词：
D O I：
10.1002/bip.1979.360180110
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The local electrostatic order in polyelectrolytic solutions has been studied by magnetic birefringence measurements on short segments (n ∼ 34) of the (Tyr‐Glu)n polypeptide in high magnetic fields up to 13 T. We give evidence that only above a critical polymer concentration do small domains exist within which the polymers show a parallel ordering. This structural order disappears suddenly at ionic strengths above about 5 × 10−2 M and above a melting temperature of about 50°C. Copyright © 1979 John Wiley & Sons, Inc.
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页码：101 / 111
页数：11
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