Now showing items 1-10 of 24
Vibrational analysis of crystalline diketopiperazine--II. Normal mode calculations
(Elsevier, 1984)
Based on our Raman and i.r. [1] data and assignments for DKP and five of its isotopic derivatives, we have refined an intramolecular force field in a non-redundant basis. This analysis shows that the cis peptide group may ...
Histological localization of binding sites of [alpha]-bungarotoxin and of antibodies specific to acetylcholine receptor in goldfish optic nerve and tectum
(Elsevier, 1980-07-21)
Goldfish optic nerve as well as ganglion cell neurites grown in culture selectively bind rhodamine-labeled [alpha]-bungarotoxin following tissue fixation. Binding is competed for by unlabeled bungarotoxin, by carbamylcholine ...
The structure of crystalline and membrane-bound gramicidin A by vibrational analysis
(Elsevier, 1984-12-28)
The results of normal mode calculations on the [beta]4.4, [beta]6.3, [up arrow, down arrow][beta]5.6, and [up arrow, down arrow]][beta]7.2 structures of gramicidin A are compared with infrared and Raman spectra of crystalline ...
Observation of coupled quasi-two-dimensional electronic excitations in tilted magnetic fields
(Elsevier, 1988)
We report on a magneto-Raman scattering investigation of free and donor-bound electrons in GaAs/AlxGa1-xAs quantum wells. For fields perpendicular to the layers, the spectra show intersubband transitions of photoexcited ...
Refractive index within the lens of a goldfish eye determined from the paths of thin laser beams
(Elsevier, 1988)
The paths of 15 [mu]m diameter laser beams traversing goldfish eye lenses were photographed. Measurements of these photographs gave experimental data for the distance of the exit point of each ray from the lens axis as a ...
Microfilaments and actin-associated proteins at sites of membrane-substrate attachment within acetylcholine receptor clusters
(Elsevier, 1989-06)
Rat myotubes in tissue culture form broad areas of close contact with the substrate. These areas often display two distinct, interdigitating sets of membrane domains. One, the "contact domain", is close to the substrate; ...
Raman and normal mode studies of the polypeptide chain conformations in crystalline magnesium and calcium poly(-glutamate)s
(Elsevier, 1985)
An analysis of the Raman spectra of dry crystalline magnesium and calcium poly(-glutamate)s, based on a normal mode calculation of [alpha]-helical poly(-glutamate), shows that the polypeptide chains in both salts have an ...
Lateral motion of membrane proteins and biological function
(Springer-Verlag; Springer-Verlag New York Inc., 1983-02)
Mossbauer spectroscopy applied to the oxidized and semi-reduced states of the iron-molybdenum cofactor of nitrogenase
(Elsevier, 1989-07-31)
Mossbauer parameters at 125K for both the oxidized and semi-reduced states of FeMoco isolated from the MoFe protein of nitrogenase of [delta]/Fe=0.32 and 0.37 mm/s and [Delta]Eq=0.84 and 0.71 mm/s, respectively, are ...
Surface enhanced raman spectroscopy of halide ions on colloidal silver: morphology and coverage dependence
(Elsevier, 1983-01-02)
Transmission electron microscopy shows that the colloidal silver used as a substrate for surface enhanced Raman spectroscopy consists of 75-135 A average diameter faceted crystals, which can be made to aggregate in clusters ...