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Block sequential polypeptides of L-alanine and glycine with D, L-glutamic acid

✍ Scribed by Takayoshi I Iio

Publisher
Wiley (John Wiley & Sons)
Year
1971
Tongue
English
Weight
719 KB
Volume
10
Category
Article
ISSN
0006-3525

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Synthesis of sequential polypeptides con
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## Abstract Sequential polypeptides with the repeating units L‐glutamyl‐L‐DOPA, L‐DOPA‐L‐glutamyl‐L‐DOPA, L‐glutamyl‐L‐glutamyl‐L‐DOPA, L‐DOPA‐L‐DOPA‐L‐glutamyl‐L‐DOPA, and L‐glutamyl‐L‐glutamyl‐L‐glutamyl‐L‐DOPA have been synthesized by solution polymerization of the __p__‐nitrophenyl esters of th

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The synthesis and some of the physical-chemical properties of tricopolymers of L-glutamic acid, blysine, and L-alanine are reported here. The molar ratios of the \* Amino acid analyses of these polypeptides yielded values within approximately 3.5% of the mole ratios of NCA's incorporated into the po

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The helix-coil transition has been studied by high-resolution NMR for three watersoluble polypeptides. Such systems are better models for protein behavior than those in TFA-CDC13 solvent. An upfield shift of ~7 cps is observed for the a-CH peak of poly(bg1utamic acid) and poly-clysine as the helix c

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Thermal and charge induced random coil to a-helii transitions of poly-cglutamic acid (PGA) were measured by optical rotatory dispersion in various solvents. The data of PGA in 0.1M NaCl were analyzed by the Zimm-Rice theory. Enthalpy and entropy changes for the coil-to-helix transition in the unioni

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## Abstract Six different sequential polypeptides with the repeating units L‐lysyl‐L‐DOPA, L‐DOPA‐L‐lysine, L‐lysyl‐L‐lysyl‐L‐DOPA, L‐DOPA‐L‐DOPA‐L‐lysine, L‐lysyl‐L‐lysyl‐L‐lysyl‐L‐DOPA, and L‐DOPA‐L‐DOPA‐L‐DOPA‐L‐lysine have been synthesized by solution polymerization of the __p__‐nitrophyenyl es