The decrease in residue in the acid-treated CNTs (≈2.1 wt%) as compared to raw CNTs (≈7.1 wt%) does show that a significant amount of the metal catalyst was removed by the treatment procedure.
Finally, the peak at 1734 cm−1 of the acetyl ester units in hemicellulose present in the starting Arundo donax decreases in the solid residue of the test at 180 °C (Exp. 1FT), whereas it disappears almost completely in the solid residue at 200 °C (Exp. 2FT), again confirming that this ester bond can be used to mark the dissolution of hemicellulose.
One may represent these spectra with a proper Tyr band centered at 304 nm and a second band around 340 nm, which is typical of the emission of tyrosinate, which may depend on a decrease of the residue pKa in the excited state [39].
When comparing sequence composition of thermophiles and mesophiles, the most apparent difference is an enrichment of charged residues in combination with a decrease in the number of polar residues in the thermophilic proteins.
The amino acid content of the SCAmpPs predicted cyclic peptides are enriched in non-polar amino acids (tryptophan, phenylalanine, proline, leucine, isoleucine) relative to expected frequencies [ 14], and while there is an overall decrease in charged residues, the ratio of basic to acidic amino acids is high in the SCAmpPs peptides (Additional file 2).
An analysis of the sialic acids present in the cells' own glycoconjugates revealed a decrease in the percentage of Neu5Gc residues from 4% in the parental cells to less than 1% in the CHO-AsUH2 cell line.
For fungal plasma membrane proteins, the overall trend is for the outer leaflet half of the TMD to have an increase in smaller residues and decrease in larger residues, with the opposite trend for the Golgi proteins, whereas ER TMDs show no difference in relative abundance of hydrophobic residues between the leaflets.
A decrease in mean residue ellipticity at 222 nm (θ222) indicates a decrease in α-helical content.
We observe a decrease in mean residue ellipticity centered around wavelength 220 nm upon treatment with oleic acid but not elaidic acid.
Upon addition of 0.5 mM Ca2+, both domain fragments displayed a small, but reproducible, decrease in mean residue ellipticity (205 225 nm) indicating Ca2+ changes in secondary structure, therefore Ca2+ interaction with the CLR domains.
