𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Equilibrium and kinetic studies of the cooperative I ⇌ II transition in poly-L-proline

✍ Scribed by Jürgen Engel


Publisher
Wiley (John Wiley & Sons)
Year
1966
Tongue
English
Weight
240 KB
Volume
4
Category
Article
ISSN
0006-3525

No coin nor oath required. For personal study only.

✦ Synopsis


The synthetic polymer poly-L-proline exists in two conformational forms, I and 11, the structures of which have been elucidated by x-ray crystallography.'-3 Form I is a right-handed helix with all peptide bonds in the cis configuration, and is stable in pyridine and aliphatic alcohols. Form I1 is a left-handed helix having all peptide bonds in the trans configuration, and is stable in water, acetic acid, formic acid, and benzyl alcoh01.~~~


📜 SIMILAR VOLUMES


A vibrational study of poly (L-proline)
✍ John F. Rabolt; William Wedding; Kenneth W. Johnson 📂 Article 📅 1975 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 421 KB 👁 1 views

## Abstract The far infrared spectra of poly(L‐proline) I (190–35 cm^−1^) and II (400–35 cm^−1^) were obtained in the solid state at both 300° and 110°K. A significant difference in the region below 100 cm^−1^ was observed. A very intense band located at 60 cm^−1^ in the infrared spectrum of form I

Studies of the helix–coil transition of
✍ Hajime Noguchi 📂 Article 📅 1966 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 490 KB 👁 2 views

Water-insoluble films of poly-L-lysine, crosslinked with formaldehyde, were suspended in aqueous media and their relative lengths measured as a function of pH. A sharp transition of the polymer was observed in the pH range which corresponded with that observed in polylysine solutions by optical rota

Kinetic studies and mechanism on the per
✍ Hossein Iloukhani; Homayoon Bahrami 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB 👁 2 views

The kinetic study and mechanism of the permanganic oxidation of L-glutamine in sulfuric acid has been carried out both in the absence and presence of silver (I) using a spectrophotometric technique. Activation parameters have been evaluated using the Arrhenius and Eyring plots. Mechanisms consistent

Kinetic investigations on the photopolym
✍ P. Bosch; J. Serrano; J. L. Mateo; J. Guzmán; P. Calle; C. Sieiro 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 165 KB 👁 2 views

The reaction kinetics in the dark of photopolymerized mono-and dimethacrylates in a polymeric binder has been studied. Electron spin resonance spectroscopy (ESR) provided useful information regarding the nature of the radicals involved in postpolymerization reactions. Computer simulations were perfo