𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Vibrational analysis of conformation in peptides, polypeptides, and proteins

✍ Scribed by S. Krimm

Publisher
Wiley (John Wiley & Sons)
Year
1983
Tongue
English
Weight
408 KB
Volume
22
Category
Article
ISSN
0006-3525

No coin nor oath required. For personal study only.

✦ Synopsis

Synopsis

A vibrational force field for the polypeptide chain has been developed for normal-mode analysis of such molecules. It can reproduce observed frequencies of known structures to within about 5 cm-l. We review the application of this technique to conformational problems in peptides (@-turns and their model compounds), polypeptides [the aII-helix and crystalline poly(g1ycine II)], and proteins (bacteriorhodopsin and glucagon).

* This is paper number 16 in a series of which Ref. 20 is paper 15.

πŸ“œ SIMILAR VOLUMES

Vibrational analysis of peptides, polype
Vibrational analysis of peptides, polypeptides, and proteins. VI. Assignment of Ξ²-turn modes in insulin and other proteins
✍ Jagdeesh Bandekar; S. Krimm πŸ“‚ Article πŸ“… 1980 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 343 KB

## Abstract The normal modes have been calculated for structures having the dihedral angles of the four β‐turns of insulin. Frequencies are predicted in the amide I region near 1652 and 1680 cm^βˆ’1^. The former overlaps the α‐helix band at 1658 cm^βˆ’1^ in the Raman spectrum, while the latter accounts

Topological aspects of the conformationa
Topological aspects of the conformational transformations in polypeptides and proteins
✍ P. de Santis; S. Morosetti; A. Palleschi πŸ“‚ Article πŸ“… 1983 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 319 KB πŸ‘ 1 views

The topological aspects of the conformational transformations in a polypeptide chain are investigated in relation to the problem of selecting the minimum-energy pathways in protein folding.

Stereochemical criteria for polypeptides
Stereochemical criteria for polypeptides and proteins. IV. Standard dimensions for the cis-peptide unit and conformation of cis-polypeptides
✍ G. N. Ramachandran; C. M. Venkatachalam πŸ“‚ Article πŸ“… 1968 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 409 KB πŸ‘ 1 views

Using potential energy formulas for variation of bond angles and for w-distortion, the conformation of minimum energy for the cis form of the petide unit has been worked out. This agrees very well with the corresponding set of atoms in the crystal structure of Leu-Pro-Gly and the dimensions of a sta

Conformational analysis of melittin in s
Conformational analysis of melittin in solution phase: Vibrational circular dichroism study
✍ Feng Wang; Prasad L. Polavarapu πŸ“‚ Article πŸ“… 2003 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 200 KB πŸ‘ 1 views

## Abstract The vibrational absorption and vibrational circular dichroism (VCD) spectra of melittin in D~2~O solutions at different pH values, different salt concentrations, or different 2,2,2‐trifluoroethanol (TFE) concentrations are recorded in the amide Iβ€² (1850–1600 cm^βˆ’1^) region. Two models a