The general nature of the biological transamination reaction (1) has been amply demonstrated in the past few years (2-7). It has been suggest’ed (8) that the coenzyme, via alternate interconversions into pyridoxal and pyridoxamine phosphates, functions as t’he shuttle of the amino groups in these reactions. If this mechanism is valid, it t’hen follows that enzymatic transaminations between the ...

Recent interest in tryptophan metabolism has been stimulated by evidence that tryptophan is a precursor of nicotinic acid in mammals (1) as well as in Neurospora CTUSSU (2). The formation of kynurenine, kynurenic acid, and xanthurenic acid from tryptophan has been demonstrated by numerous experiments (3-5) and has been confirmed by isotope technique in the case of kynurenine and kynurenic acid ...

The wild grasses are of increasing interest among landscape architects. appropriate plant selection is crucial for the subsequent survival and growth plants in grassy gardens. aim experiment was to assess influence seed age (1–3-year old seeds) on germination three Stipeae species: Eriocoma occidentalis subsp. californica, Stipa pulcherrima Hesperostipa curtiseta. weight percentage showed a dec...

Glycine contributes carbon atoms 4 and 5 and nitrogen atom 7 of the purine ring (1-3). Benedict, Yfi, Bien, Gutman and Stetten (4) have described experiments in which the abundance of N15 in uric acid was measured for several days following an oral test dose of glycine-N'5. In two gouty subjects, three times as much of the administered N15 was recovered in urinary uric acid as in normal subject...

The initial cortical response of the trigeminal somatosensory evoked magnetic fields was measured for electrical stimulation of the lower lip in eleven subjects. The stimulus frequency was 0.7 Hz and stimulus intensity was nine times sensory threshold. The initial contralateral response was detected in 20 hemispheres at a latency of 14.6+/-1.3 ms and was named N15m. The equivalent current dipol...

Microwave pulse sequences are the basis of coherent manipulation electronic spin ground state in nitrogen vacancy (NV) centers. In this work we demonstrate stimulated Raman transitions (SRTs) and adiabatic passage (STIRAP), two ways to drive dipole-forbidden transition between sublevels triplet NV center. This driving is achieved by a two-photon microwave which simultaneously drives detuned via...

Abstract Plasmids and temperate phages are key contributors to bacterial evolution. They usually regarded as very distinct. However, some elements, termed phage–plasmids, known be both plasmids phages, e.g. P1, N15 or SSU5. The number, distribution, relatedness characteristics of these phage–plasmids poorly known. Here, we screened for elements among ca. 2500 12000 identified 780 across diverse...