The results of proline-catalyzed aldol reaction of acetone with O, O′-alkylidene derivatives of glyceraldehyde are determined by the configuration of the chiral center in the aldehyde. The reaction...doi:10.1134/S107042801504017XYu. Yu. KozhemyakinYu. Yu. KozyrkovPleiades PublishingRussian Journal of Organic Chemistry
toruloides GAPDH (glyceraldehyde 3-phosphate dehydrogenase) promoter into WT R. toruloides achieved α-bisabolene titer of 294 mg/L in a defined medium containing 2% (w/v) glucose and 680 mg/L in a 2-L bioreactor fed with corn stover hydrolysate [6]. Since heterologous DNA was ...
With the exception of non-chiral glycine, they all exist naturally as the L-stereoisomeric form, which is not to say they are all laevorotatory, but rather that they can be theoretically derived from L-glyceraldehyde, itself laevorotatory. The side chains distinguish the amino acids and are ...
Assign R or S configuration to each chirality center in the given monosaccharide, and tell whether each is a D sugar or an L sugar. Chirality: Chirality is described as phenomenon in which the two compounds or moelcules can not be su...
TthLPMO9G activity was studied during oxidation of cellulose and explore the role of catalase in these reactions. By introducing catalase, we aim to minimize interference from H2O2, produced by the redox partners, to accurately assess each donor's ability to provide electrons to the LPMO. ...
For example, (S)-glyceraldehyde shown in Fig. 1.11 as ‘A’ Fischer projection arrangement; arrangement ‘B’ is obtained by rotation of the arrangement ‘A’ by 180 degrees also represents (S)-glyceraldehyde. However, arrangement ‘C’ obtained by rotation of molecule in arrangement ‘A’ by...
21. An isolated nucleic acid encoding a UDP-N-Acetylglucosamine: Galactose-β1,3-N-Acetylgalactosamine-α-R β1,6 N-Acetylglucosaminy-transferase (C2GnT3) having glycosyltransferase activity, comprising nucleotide sequences encoding one or both the amino acid sequences of residues 39-46 and 450-...
Moreover, the downfield shifts of H-4/C-4 is diagnostic for the presence of a phosphate group linked at O-4 [20]. The β-anomeric configuration of this residue was confirmed by the intra-residue NOE correlations observed between 1-H and both H-3 and H-5 in the ROESY spectrum. ...
Glyceraldehyde 0.43 Glyoxal ND Methylglyoxal 23.5 1-Hydroxy-2-propanone 20.2 1,3-Dihydroxyacetone 9.4 Diacetyl 51.4 2,3-Pentanedione 8.7 Enzyme activity in the oxidation reactions was measured with 100 mm substrate and 5 mm NAD in 33 mmsodium pyrophosphate (pH 8.0). The activity toward (2R,3R...
configurationAddition of diethyl phosphite to 2,3-O-cyclohexylidene-D-glyceraldehyde catalyzed by triethylamine or fluorides led to ca. 35:65 mixtures of diethyl (1R,2R)- and (1S,2R)-2,3-O-cyclohexylidene-1,2,3-trihydroxypropylphosphonates (4a) and (4b). Application of lithium diethyl...