Mescaline-induced changes of brain-cortex ribosomes. Effect of mescaline on the hydrogen-bonded structure of ribonucleic acid of brain-cortex ribosomes

1970 ◽  
Vol 118 (5) ◽  
pp. 681.b1-681.b1
Keyword(s):  
Ribonucleic Acid ◽  
Brain Cortex ◽  
Induced Changes ◽  
Hydrogen Bonded

scholarly journals Mescaline-induced changes of brain-cortex ribosomes. Effect of mescaline on the hydrogen-bonded structure of ribonucleic acid of brain-cortex ribosomes

1970 ◽  
Vol 117 (5) ◽  
pp. 969-980 ◽  
Author(s):  
R. K. Datta ◽  
J. J. Ghosh
Keyword(s):  
Ribosomal Rna ◽  
Ribonucleic Acid ◽  
Brain Cortex ◽  
Total Rna ◽  
Hyperchromic Effect ◽  
Brain Cortex Slices ◽  
Cortex Slices ◽  
Induced Changes ◽  
Goat Brain ◽  
Hydrogen Bonded

1. The action of mescaline sulphate on the hydrogen-bonded structure of the RNA constituent of ribosomes of goat brain-cortex slices was studied by using the hyperchromic effect of heating and formaldehyde reaction. 2. The ribosomal total RNA species of the mescaline-treated brain-cortex slices have a smaller proportion of hydrogen-bonded structure than the ribosomal RNA species of the untreated brain-cortex slices. 3. Mescaline also appears to have affected this lowering of hydrogen-bonded structure of the ribosomal 28S RNA of brain-cortex tissue.

Environment-induced changes in the base ratios of ribonucleic acid of Escherichia coli

1960 ◽  
Vol 2 (5) ◽  
pp. 273-275 ◽  
Author(s):  
Melvin Santer ◽  
David C. Teller ◽  
Willard Andrews
Keyword(s):  
Escherichia Coli ◽  
Ribonucleic Acid ◽  
Induced Changes

scholarly journals Reflection Absorption Infrared Spectroscopy Characterization of SAM Formation from 8-Mercapto-N-(phenethyl)octanamide Thiols with Phe Ring and Amide Groups

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5633
Author(s):  
Zenonas Kuodis ◽  
Ieva Matulaitienė ◽  
Marija Špandyreva ◽  
Linas Labanauskas ◽  
Sigitas Stončius ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Self Assembled Monolayers ◽  
Trans Conformation ◽  
Band Frequency ◽  
Reflection Absorption Infrared Spectroscopy ◽  
Assembled Monolayers ◽  
Vibrational Bands ◽  
Induced Changes ◽  
Hydrogen Bonded

Multifunctional amide-containing self-assembled monolayers (SAMs) provide prospects for the construction of interfaces with required physicochemical properties and distinctive stability. In this study, we report the synthesis of amide-containing thiols with terminal phenylalanine (Phe) ring functionality (HS(CH2)7CONH(CH2)2C6H5) and the characterization of the formation of SAMs from these thiols on gold by reflection absorption infrared spectroscopy (RAIRS). For reliable assignments of vibrational bands, ring deuterated analogs were synthesized and studied as well. Adsorption time induced changes in Amide-II band frequency and relative intensity of Amide-II/Amide-I bands revealed two-state sigmoidal form dependence with a transition inflection points at 2.2 ± 0.5 and 4.7 ± 0.5 min, respectively. The transition from initial (disordered) to final (hydrogen-bonded, ordered) structure resulted in increased Amide-II frequency from 1548 to 1557 cm−1, which is diagnostic for a strongly hydrogen-bonded amide network in trans conformation. However, the lateral interactions between the alkyl chains were found to be somewhat reduced when compared with well-ordered alkane thiol monolayers.

Effects of acetylcholine on potassium-induced changes of GABA and taurine uptakes and release in cerebral cortex slices from the rat

1977 ◽  
Vol 55 (3) ◽  
pp. 356-362 ◽  
Author(s):  
A. M. Benjamin ◽  
J. H. Quastel
Keyword(s):  
Brain Cortex ◽  
Brain Slices ◽  
Suppressive Effect ◽  
Endogenous Gaba ◽  
Sodium Gradient ◽  
Brain Cortex Slices ◽  
Cortex Slices ◽  
Induced Changes ◽  
The Brain ◽  
Uptake And Release

Acetylcholine, in presence of eserine, has little or no effect on the potassium-ion-suppressed concentrative uptakes of GABA and taurine by rat brain cortex slices in contrast with its effect on those of L-glutamate, L-aspartate, and glycine. Potassium ions at a concentration of 30 μequiv./ml in the incubation medium has a marked suppressive effect on the uptakes of GABA and taurine when there is no apparent change in the sodium ion content of the brain tissue. It is concluded that some factor, besides the change in sodium gradient, operates in the mechanism of potassium suppression of GABA and taurine uptakes. Acetylcholine diminishes the potassium-evoked release of endogenous GABA and taurine from brain slices. Its action is Ca2+ dependent and is diminished by atropine. Acetylcholine does not affect the potassium-accelerated release of GABA from brain slices previously loaded with this amino acid. The differences in uptake and release phenomena exhibited by GABA and taurine from those of L-glutamate and L-aspartate may be due to differences between the mechanisms, as well as the sites, of cerebral uptake and release of these two groups of amino acids.

scholarly journals Higher-plant mitochondrial ribosomes contain a 5S ribosomal ribonucleic acid component

1976 ◽  
Vol 157 (1) ◽  
pp. 275-277 ◽  
Author(s):  
C J Leaver ◽  
M A Harmey
Keyword(s):  
Ribonucleic Acid ◽  
Plant Mitochondria ◽  
5S Rrna ◽  
Higher Plant ◽  
Acid Component ◽  
Mitochondrial Ribosomes ◽  
Ribosomal Ribonucleic Acid ◽  
Rrna Species ◽  
Hydrogen Bonded

Ribosomes from higher-plant mitochondria contain 5S rRNA, in contrast with the mitochondrial ribosomes of animals and fungi, in which such a component has not been detected. In common with the ribosomes of prokaryotes and chloroplasts, higher-plant mitochondrial ribosomes do not appear to contain an RNA equivalent to the 5.8 S rRNA that is found in eukaryoytes hydrogen-bonded to the largest of the cytoplasmic rRNA species.

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