The phrase "acids stem" is not correct and does not convey a clear meaning in written English.
It may be intended to refer to the origin or source of acids, but without additional context, it is ambiguous.
Example: "The acids stem from the fermentation process used in the production of vinegar."
Alternatives: "acids originate" or "acids derive".
The properties of perfluorinated acids stem from the carbon-fluorine bond, one of the strongest in chemistry.
Warth et al. (2015) have reported increased amino acid abundances in response to DON, hypothesizing that this may either be due to the increased biosynthesis of amino acids or that amino acids stem from degradation of unfinished peptide chains as a consequence of the ribotoxic effect of DON.
Table 5 HPLC analysis of stem, root and leaves for phenolic acids Phenolic acids Stem (ppm) Root (ppm) Leaves (ppm) Chlorogenic acid 0.936 5.538 ND* Paracoumaric acid 0.11 0.13 ND Ferulic acid 2.88 1.29 ND Syringic acid ND 0.54 ND Caffeic acid ND ND 47.61 *ND = not detected.
This sequence included 104 amino acids upstream of the putative start methionine [ 18], 11 amino acids stemming from the original Bluescript SK− vector, and 25 amino acids from the pET-Duet1 vector including a His tag.
PGN is a large glycan polymer composed of alternating N-acetylglucosamine (GlcNac) and N-acetylmuramic acid (MurNac) residues joined by short (4 5 L- and D-amino acids, [21]) stem peptides [21].
The former is bonded to a short amino acid stem (l-alanine- d- iso-glutamine- l-lysine- d-alanine- d-alanine) that is bridged to neighboring stems via a pentaglycyl segment in S. aureus (Supplementary Figure 1).
The complete list of the 52 tDNAs of H. volcanii tabulated in a linear, as well as in a cloverleaf representations is given in Additional file 2. These 52 genes correspond to 46 different tRNAs (different anticodons) since 6 genes are present in two copies (the two copies of tDNA-Gly (GCC) slightly differ in the amino acid stem only).
There was a dramatic increase in serum and liver bile acids which stems from defective clearance of bile acids into the canaliculus as a direct consequence of mis-localization of BSEP.
A rapidly built network of dams and weirs, and massive amounts of gypsum and acetic acid, have stemmed or at least neutralised the tide of toxic waste that hit the river after a reservoir wall gave way at the MAL Zrt aluminium plant at Ajka, in western Hungary, on October 4th.
Acid production stems from the hydrolysis of magnesium ions, especially at near dryness.
Since peptides with an identical amino acid sequence stemming from different protein species elute within a single peak, quantification of the individual protein species is not possible using this method.
