Braunstein and Kritzmann (1) have reported that with pigeon breast muscle any a-amino acid, with the possible exception of glycine, is active in transamination with either a-ketoglutaric or oxaloacetic acid. On the other hand, the author (2) found that transamination in pigeon breast muscle is limited to the following reactions. a (1) Z(+)-Glutamic acid + oxaloacetic acid e a-ketoglutaric acid ...

DEWAN [1938] and Adler et al. [1939] reported that certain enzyme preparations obtained from heart muscle bring about a reductive amination of ac-ketoglutaric acid. The hydrogen required in this reaction may be provided from other dehydrogenase systems via coenzyme I or II, especially from the ,-hydroxybutyric and i8ocitric dehydrogenases, according to the schemes: (1) ac-ketoglutaric acid+NH3+...

The phytopathogenic prokaryote Xanthomonas oryzae pv. oryzae is the causal agent of bacterial leaf blight (BB) of rice and utilizes a type III secretion system (T3SS) to deliver T3SS effectors into rice cells. In this report, we show that the ketoglutarate transport protein (KgtP) is secreted in an HpaB-independent manner through the T3SS of X. oryzae pv. oryzae PXO99(A) and localizes to the ho...

Recent studies in vitro of tyrosine metabolism have revealed the distribution and the r&e of the tyrosine-a-ketoglutaric acid transaminase system (l-8). In certain of these studies the obligatory rBle of this transaminase as a first step in the conversion of tyrosine to homogentisic acid has been indicated (6-S). The present study is concerned with the partial purification of dog liver tyrosine...

Crude cell-free preparations of Pseudomonas saccharophila grown on n-arabinose oxidize n-arabinose to ol-ketoglutaric acid (1). n-Arabonic acid has been identified as an intermediate in this reaction. The investigations described in this communication are concerned with the mechanism of the conversion of Larabonate to a-ketoglutarate. Evidence is presented for the intermediate formation of &2-k...

Crude cell-free preparations of Pseudomonas saccharophila grown on n-arabinose oxidize n-arabinose to ol-ketoglutaric acid (1). n-Arabonic acid has been identified as an intermediate in this reaction. The investigations described in this communication are concerned with the mechanism of the conversion of Larabonate to a-ketoglutarate. Evidence is presented for the intermediate formation of &2-k...

The biological conversion of d-isocitric to a-ketoglutaric acid was established by the work of Martius and others (1-4). Adler et al. showed that, with extracts of acetone powders of animal tissues, triphosphopyridine nucleotide (TPN) is a specific coenzyme in the reaction and cited evidence for a similar specificity in yeast. Ochoa (5) synthesized oxalosuccinic acid, the intermediate postulate...

in this study, cross linked chitosan resin (ccr) was prepared by cross linking chitosan with glutaraldehyde, and then î±-ketoglutaric acid-modified chitosan resin (kcr) was obtained by modifying ccr with î±-ketoglutaric acid. the sorption behavior of methylene blue (mb) on kcr and ccr from aqueous solution was investigated. the effect of various experimental parameters (e.g. initial ph, sorbent...