Now showing items 61-70 of 119
On the nature of the iron sulfur cluster in a deuterated algal ferredoxin
(Elsevier, 1975-12-11)
A protonated and a completely deuterated two-iron algal ferredoxin from Synechococcus lividus have been studied by optical, electron paramagnetic resonance, electron-nuclear double resonance, proton magnetic resonance and ...
Raman and normal-mode studies of the extended-helix conformation in polypeptide chains This is paper number 36 in a series on vibrational analysis of peptides, polypeptides, and proteins, of which Ref. 23 is paper number 35.
(Wiley Subscription Services, Inc., A Wiley Company, 1987)
The nature of the local main-chain conformation of polypeptides with charged side chains has been the subject of considerable discussion since Tiffany and Krimm first proposed [(1968) Biopolymers 6 , 1379–1381] that, ...
Vibrational force field and normal mode analysis of N,N-dimethylacetamide
(Elsevier, 1989)
A simple general valence force field has been refined for N,N-dimethylacetamide which includes both in-plane and out-of-plane modes. This force field gives good agreement between observed and calculated frequencies for ...
Vibrational analysis of cyclo(-Ala--Ala) in two crystalline forms. Effect of structure on peptide group and CH modes
(Elsevier, 1988)
Cyclo(-Ala--Ala) has been found by X-ray diffraction to crystallize in two forms with different hydrogen bond patterns and strengths and different conformations of the C[alpha]H[alpha]C[beta]H3 group. We have done a ...
Energetics of the disulfide bridge: An ab initio study
(Wiley Subscription Services, Inc., A Wiley Company, 1993-10)
The energetics of the Χ 1 2 Χ 3 Χ 2 2 portion of the disulfide bridge have been obtained from an ab initio study of diethyl disulfide. Calculations at the 3-21G* level were done on relaxed structures at every ∼ 30° ...
Surface enhanced raman spectroscopy of halide ions on colloidal silver: simulation of silver-halide ion spectra
(Elsevier, 1983-01-02)
The surface enhanced Raman spectra of halide ions adsorbed on colloidal silver surfaces can be explained by an interacting dipole model of a discrete adsorbate superlattice. Both (100) and (111) surfaces have been modeled, ...
Electromagnetic effects on a molecule at a metal surface : I. Effects of nonlocality and finite molecular size
(Elsevier, 1981-08-02)
The electromagnetic effects on a molecule near a metal surface are considered with the view to understanding the surface-enhanced-Raman-scattering (SERS) effect. The image enhancement effect is calculated including the ...
Dual-mode EPR spectrometry of O2-pulsed cytochrome c oxidase
(Elsevier, 1984-06-26)
O2-activated bovine heart cytochrome c oxidase has been examined by dual-mode EPR spectrometry. Resonances have been observed at g = 10 and 4.5 in the parallel mode and at g = 10, 5, 1.8 and 1.7 in the normal mode. The ...
Vibrational analysis of peptides, polypeptides, and proteins. II. Β-Poly( L -alanine) and Β-poly( L -alanylglycine)
(Wiley Subscription Services, Inc., A Wiley Company, 1976-12)
The normal vibration frequencies of poly( L -alanine) and poly( L -alanylglycine) in the antiparallel chain-pleated sheet structure have been calculated, using the force field for polyglycine I from the previous paper ( ...
Effwct of temperature on the circular dichroism spectra of polypeptides in the extended state
(Wiley Subscription Services, Inc., A Wiley Company, 1972-11)
The circular dichroism (CD) spectra of poly- L -proline and of poly- L -glutamic acid and poly- L -lysine in their charged states have been studied as a function of temperature. The variation of CD spectra with temperature ...