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Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents. / Lezov, A. V.; Mel'nikov, A. B.; Polushina, G. E.; Ryumtsev, E. I.; Lysenko, E. A.; Zezin, A. B.; Kabanov, V. A.

In: Polymer Science - Series A, Vol. 43, No. 9, 09.2001, p. 915-920.

Research output: Contribution to journal › Article › peer-review

Harvard

Lezov, AV, Mel'nikov, AB, Polushina, GE, Ryumtsev, EI, Lysenko, EA, Zezin, AB & Kabanov, VA 2001, 'Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents', Polymer Science - Series A, vol. 43, no. 9, pp. 915-920.

APA

Lezov, A. V., Mel'nikov, A. B., Polushina, G. E., Ryumtsev, E. I., Lysenko, E. A., Zezin, A. B., & Kabanov, V. A. (2001). Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents. Polymer Science - Series A, 43(9), 915-920.

Vancouver

Lezov AV, Mel'nikov AB, Polushina GE, Ryumtsev EI, Lysenko EA, Zezin AB et al. Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents. Polymer Science - Series A. 2001 Sep;43(9):915-920.

Author

Lezov, A. V. ; Mel'nikov, A. B. ; Polushina, G. E. ; Ryumtsev, E. I. ; Lysenko, E. A. ; Zezin, A. B. ; Kabanov, V. A. / Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents. In: Polymer Science - Series A. 2001 ; Vol. 43, No. 9. pp. 915-920.

BibTeX

@article{e3c47b37b2b74eabbf4d3749d81c58dd,
title = "Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents",
abstract = "Hydrodynamic, electrooptical, and conformational properties of stoichiometric polyelectrolyte complexes composed of poly(L-glutamic) acid and a cationic surfactant in chloroform and isopropyl and methyl alcohols were studied. In all these solvents, the molecules of the complex are individual compounds, neither dissociating into separate components nor forming intermolecular associates. The optical rotation spectra of the solutions of the studied complex and its covalent analog, poly(γ-benzyl-α,L-glutamate), are characteristic of polypeptides occurring in the form of an α-helix. Comparison of the intrinsic viscosity [η] and the times of orientational relaxation τd of molecules shows that the hydrodynamic sizes of the complex molecules are markedly smaller than those of poly(γ-benzyl-α,L-glutamate) with the same degree of polymerization. A model is advanced according to which steric repulsion between bulky surfactant ions is responsible for the local disturbance of the secondary structure of the complex macrornolecules; as a result, flexible fragments appear along with rigid helical regions. The presence of such fragments determines the compact convoluted conformation of the complex macromolecules in the examined solvents.",
author = "Lezov, {A. V.} and Mel'nikov, {A. B.} and Polushina, {G. E.} and Ryumtsev, {E. I.} and Lysenko, {E. A.} and Zezin, {A. B.} and Kabanov, {V. A.}",
year = "2001",
month = sep,
language = "English",
volume = "43",
pages = "915--920",
journal = "Polymer Science - Series A",
issn = "0965-545X",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "9",

}

RIS

TY - JOUR

T1 - Structure and conformation of polypeptide-cationic surfactant complexes in organic solvents

AU - Lezov, A. V.

AU - Mel'nikov, A. B.

AU - Polushina, G. E.

AU - Ryumtsev, E. I.

AU - Lysenko, E. A.

AU - Zezin, A. B.

AU - Kabanov, V. A.

PY - 2001/9

Y1 - 2001/9

N2 - Hydrodynamic, electrooptical, and conformational properties of stoichiometric polyelectrolyte complexes composed of poly(L-glutamic) acid and a cationic surfactant in chloroform and isopropyl and methyl alcohols were studied. In all these solvents, the molecules of the complex are individual compounds, neither dissociating into separate components nor forming intermolecular associates. The optical rotation spectra of the solutions of the studied complex and its covalent analog, poly(γ-benzyl-α,L-glutamate), are characteristic of polypeptides occurring in the form of an α-helix. Comparison of the intrinsic viscosity [η] and the times of orientational relaxation τd of molecules shows that the hydrodynamic sizes of the complex molecules are markedly smaller than those of poly(γ-benzyl-α,L-glutamate) with the same degree of polymerization. A model is advanced according to which steric repulsion between bulky surfactant ions is responsible for the local disturbance of the secondary structure of the complex macrornolecules; as a result, flexible fragments appear along with rigid helical regions. The presence of such fragments determines the compact convoluted conformation of the complex macromolecules in the examined solvents.

AB - Hydrodynamic, electrooptical, and conformational properties of stoichiometric polyelectrolyte complexes composed of poly(L-glutamic) acid and a cationic surfactant in chloroform and isopropyl and methyl alcohols were studied. In all these solvents, the molecules of the complex are individual compounds, neither dissociating into separate components nor forming intermolecular associates. The optical rotation spectra of the solutions of the studied complex and its covalent analog, poly(γ-benzyl-α,L-glutamate), are characteristic of polypeptides occurring in the form of an α-helix. Comparison of the intrinsic viscosity [η] and the times of orientational relaxation τd of molecules shows that the hydrodynamic sizes of the complex molecules are markedly smaller than those of poly(γ-benzyl-α,L-glutamate) with the same degree of polymerization. A model is advanced according to which steric repulsion between bulky surfactant ions is responsible for the local disturbance of the secondary structure of the complex macrornolecules; as a result, flexible fragments appear along with rigid helical regions. The presence of such fragments determines the compact convoluted conformation of the complex macromolecules in the examined solvents.

UR - http://www.scopus.com/inward/record.url?scp=0035457576&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0035457576

VL - 43

SP - 915

EP - 920

JO - Polymer Science - Series A

JF - Polymer Science - Series A

SN - 0965-545X

IS - 9

ER -

ID: 94255398