Results 101 to 110 of about 232 (154)
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Raman Spectroscopic Studies on Screening of Myopathies
Analytical Chemistry, 2015Myopathies are among the major causes of mortality in the world. There is no complete cure for this heterogeneous group of diseases, but a sensitive, specific, and fast diagnostic tool may improve therapy effectiveness. In this study, Raman spectroscopy is applied to discriminate between muscle mutants in Drosophila on the basis of associated changes ...
Gautam, Rekha +5 more
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Raman Spectroscopic Investigation of Gramicidin A′ Conformations
Science, 1974Gramicidin A′ is believed to form transmembrane channels in lipid bilayers and biological membranes. The first Raman spectroscopic study of gramicidin A′ is presented. Evidence is found for two types of conformation. One type is found in the powder and has a Raman spectrum similar to that of model polypeptides with β hydrogen bonding.
K J, Rothschild, H E, Stanley
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Semiempirical and Raman spectroscopic studies of carotenoids
Biospectroscopy, 1999Semiempirical AM1 calculations have been carried out for beta-carotene and the three xanthophylls (zeaxanthin, canthaxanthin, and astaxanthin) containing oxygen functions (hydroxy/keto groups) found in the majority of natural pigment. The fully optimized geometries correspond well with the X-ray structures of beta-carotene and canthaxanthin and ...
R J, Weesie +5 more
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Raman spectroscopic study of bacterial endospores
Analytical and Bioanalytical Chemistry, 2007Endospores and endospore-forming bacteria were studied by Raman spectroscopy. Raman spectra were recorded from Bacillus licheniformis LMG 7634 at different steps during growth and spore formation, and from spore suspensions obtained from diverse Bacillus and Paenibacillus strains cultured in different conditions (growth media, temperature, peroxide ...
Joke, De Gelder +6 more
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Raman spectroscopic investigation of carbon nanowalls
The Journal of Chemical Physics, 2006Two-dimensional carbon nanowalls (CNWs) were prepared by microwave plasma-enhanced chemical-vapor deposition and scanning electron microscopy was used to observe their morphologies. The Raman observations of different sample orientations and polarizations show that CNWs are well crystallized.
Ni, Z.H. +5 more
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Raman spectroscopic transcriptome
Science, 2018Cell Biology Raman spectroscopy records the vibrational Raman spectra of biomolecules, allowing the determination of chemical species in target samples. Although nondisruptive and label-free, its application in cell imaging is limited because of the complexity of cellular compositions. Kobayashi-Kirschvink et al.
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Raman spectroscopic study of the structure of antibodies
Biopolymers, 1975AbstractThe Raman spectra of human IgG, IgM, and rabbit IgG in lyophilized form and solution are reported. The spectral results indicate that the predominant structure in these immunoglobulin proteins is the antiparallel β‐sheet. The Raman spectra have also been obtained of rabbit anti‐ovalbumin, and this antibody molecule precipitated with its ...
P C, Painter, J L, Koenig
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Raman spectroscopic studies of diamond in Intralipid
Optics Letters, 1995Raman spectroscopic measurements were performed to determine the presence of a diamond located within an Intralipid scattering medium. The Raman signature of the diamond was recorded for varying thicknesses and concentrations of the Intralipid by use of a 514-nm argon-ion laser and a cw 785-nm Ti:sapphire laser.
C A, Thompson +4 more
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Raman spectroscopic study of tropomyosin denaturation
Biopolymers, 1974AbstractRaman spectra of the pH denaturation of tropomyosin are presented. In the native state tropomyosin has an alpha‐helical content of nearly 90%, but this value drops rapidly as the pH is raised above 9.5. The Raman spectrum of the native state is characterized by a strong amide I line appearing at 1655 cm−1, very weak scattering in the amide III ...
B G, Frushour, J L, Koenig
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Raman Spectroscopic Study of Oat Globulin Conformation
Journal of Agricultural and Food Chemistry, 2000Analysis of Raman spectra of oat globulin showed that extreme pH values caused an increase in the amide and C-H stretching band intensity, indicating changes in the secondary structures of the protein due to denaturation. Similar changes were observed when oat globulin was treated with chaotropic salts and several protein perturbants.
Phillips, DL, Rout, MK, Chan, WM, Ma, CY
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