Preparation of δ-Keto Carboxylate

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

La₁-xSrxTiO3+δ (LST) has been studied in many fields, especially in the field of microelectronics due to its excellent electrical performance. Our previous theoretical simulated work has suggested that LST has good dielectric properties, but there are rare reports about this, especially experimental reports. In this paper, LST was prepared using a solid-state reaction method. The X-rays diffrac...

Preparation of imidazo[2,1-b]thiazole-3-carboxylate by the condensation of thiohydantoins and ethylbromopyruvate

Structural basis of substrate selectivity of Δ(1)-pyrroline-5-carboxylate dehydrogenase (ALDH4A1): semialdehyde chain length.

The enzyme Δ(1)-pyrroline-5-carboxylate (P5C) dehydrogenase (aka P5CDH and ALDH4A1) is an aldehyde dehydrogenase that catalyzes the oxidation of γ-glutamate semialdehyde to l-glutamate. The crystal structures of mouse P5CDH complexed with glutarate, succinate, malonate, glyoxylate, and acetate are reported. The structures are used to build a structure-activity relationship that describes the se...

Preparation of enzymes required for enzymatic quantification of 5-keto-D-gluconate and 2-keto-D-gluconate.

For easy measurement of 5-keto D-gluconate (5KGA) and 2-keto D-gluconate (2KGA), two enzymes, 5KGA reductase (5KGR) and 2KGA reductase (2KGR) are useful. The gene for 5KGR has been reported, and a corresponding gene was found in the genome of Gluconobacter oxydans 621H and was identified as GOX2187. On the other hand, the gene for 2KGR was identified in this study as GOX0417 from the N-terminal...

Preparation of BaCe0.9Yb0.1O3-δ asymmetrical membrane for hydrogen separation at high tempratures

A mixed proton–electron conducting perovskite was synthesized by liquid-citrate method and the corresponding membrane was prepared by pressing followed by sintering. The hydrogen permeability of BaCe0.9Yb0.1O3-δ was studied as a function of temperature and hydrogen partial pressure (PH2) gradient. Using 100% dry hydrogen at 1173 K, the hydrogen permeation rate of dense membranes (1.63 mm thick)...