Results 221 to 230 of about 628,414 (263)
Some of the next articles are maybe not open access.
Amino acid functionalization of double-wall carbon nanotubes studied by Raman spectroscopy
Chemical Communications, 2007Double-wall carbon nanotubes (DWNT) have been functionalized with lysine after a strong oxidation with MnO4- in acid solution which, as suggested by the Raman spectra, attacked the external nanotube of the DWNT.
MARCOLONGO G +3 more
openaire +2 more sources
Delamination of Layered Double Hydroxides Containing Amino Acids
Chemistry of Materials, 2004Various amino acids were intercalated into Mg−Al layered double hydroxides (LDHs) as interlayer anions. The goal of this approach was to create an interlayer environment that was attractive to formamide, because of hydrogen bonding, so that penetration of formamide would lead to delamination.
openaire +1 more source
The stability of the double amino acid against decarboxylation in gas and aqueous phases [PDF]
Theoretical Chemistry Accounts, 2016 The double amino acid (DAA) molecule ((NH2)2C(COOH)2) whose existence was recently proposed is investigated regarding its stability against the unimolecular decarboxylation process in both gas and aqueous phases. The results of the ab initio CCSD(T)/aug-cc-pVDZ//MP2/aug-cc-pVDZ calculations indicate that the spontaneous detachment of carbon dioxide ...
openaire +1 more source
Journal of Neurochemistry, 1976
Abstract– We have determined the incorporation of [3H]‐, [1‐14C]‐ and [2‐14C]acetate into glutamate, glutamine and aspartate of the adult mouse brain. All these three acetates were incorporated more extensively into glutamine than into glutamate. This has been reported by several authors for each of these labelled acetates in separate experiments.
C J, Van den Berg, G, Ronda
openaire +2 more sources
Abstract– We have determined the incorporation of [3H]‐, [1‐14C]‐ and [2‐14C]acetate into glutamate, glutamine and aspartate of the adult mouse brain. All these three acetates were incorporated more extensively into glutamine than into glutamate. This has been reported by several authors for each of these labelled acetates in separate experiments.
C J, Van den Berg, G, Ronda
openaire +2 more sources
Protein and free amino acids in a high lysine maize double mutant
Phytochemistry, 1978Abstract A comparative study of free amino acids and protein fractions of normal with a double mutant (su 1 o 2 ) was made, during endosperm development in segregating ears of a maize synthetic. Zein content showed striking differences in the two genotypes, being 7.7 and 6 times greater in the normal endosperm at 24 and 47 days after pollination ...
P. Arruda +2 more
openaire +1 more source
A right handed peptide helix containing a central double d-amino acid segment
Chemical Communications, 2002The crystal structure of the 13 residue peptide Boc-Leu-Aib-Val-Ala-Leu-Aib-Val-DAla-DLeu-Aib-Leu-Aib-Val-OMe reveals a continuous helical conformation providing an unambiguous characterization of contiguous D-residues in a right handed peptide helix.
Aravinda, Subrayashastry +3 more
openaire +2 more sources
Analytical Biochemistry, 1980
Abstract A double-labeling procedure for amino acid analysis using 3 H-labeled 1-fluoro-2,4-dinitrobenzene and 14 C-labeled amino acids as internal standards is described. The procedure was tested by analyzing lysozyme and insulin B chain, and the results obtained were in good agreement with their accepted amino acid compositions.
M, Humphries, J S, Thompson
openaire +2 more sources
Abstract A double-labeling procedure for amino acid analysis using 3 H-labeled 1-fluoro-2,4-dinitrobenzene and 14 C-labeled amino acids as internal standards is described. The procedure was tested by analyzing lysozyme and insulin B chain, and the results obtained were in good agreement with their accepted amino acid compositions.
M, Humphries, J S, Thompson
openaire +2 more sources
International Journal of Pharmaceutics, 2004
The intercalation of amino acids and some peptides into Mg-Al layered double hydroxide known as hydrotalcite was examined. Although the intercalation by ion-exchange method was unsuccessful, all the amino acids except for Lys and Arg, and peptides examined could be intercalated into the layered double hydroxide by reconstruction method using Mg-Al ...
Hirokazu, Nakayama +2 more
openaire +2 more sources
The intercalation of amino acids and some peptides into Mg-Al layered double hydroxide known as hydrotalcite was examined. Although the intercalation by ion-exchange method was unsuccessful, all the amino acids except for Lys and Arg, and peptides examined could be intercalated into the layered double hydroxide by reconstruction method using Mg-Al ...
Hirokazu, Nakayama +2 more
openaire +2 more sources
Amino acid sequences and double-stranded messages—A means of directing the site of mutation?
Journal of Theoretical Biology, 1973Abstract The genetic code seems adapted to allow messenger RNA to contain double-stranded regions. A possible mechanism whereby double-stranding could help to direct the site of mutations is discussed in relation to amino acid sequences in human immunoglobulin κ light chains and silk fibroin.
openaire +2 more sources
Biological and surface-active properties of double-chain cationic amino acid-based surfactants
Amino Acids, 2014Cationic amino acid-based surfactants were synthesized via solid phase peptide synthesis and terminal acylation of their α and ε positions with saturated fatty acids. Five new lipopeptides, N-α-acyl-N-ε-acyl lysine analogues, were obtained. Minimum inhibitory concentration and minimum bactericidal (fungicidal) concentration were determined on reference
Katarzyna E. Greber +4 more
openaire +2 more sources