Arcobacter sp. strain LA11 was isolated from the gut of the abalone Haliotis discus Here, we present the annotation and analysis of the draft genome of this strain, which is involved in nitrogen metabolism.

The extent and complexity of nitrogen metabolism in the mammalian large gut (hind-gut) varies considerably between species and is influenced by the physiological age of the animal. It is most highly developed in herbivores and omnivores whose diets, post-weaning, ensure a fairly constant supply of fermentable materials to the lower tract. The present paper reviews some of these topics, with par...

T he regulation of metabolism in bacteria is accomplished by a complex array of signal transduction systems, metabolic interactions, and gene regulatory relationships. For example, maintenance of the balance of carbon and nitrogen metabolism involves (as a partial list) ppGpp, cAMP, the NtrBC two-component system and the coupled Nac-controlled regulon, the leucine-responsive protein LRP, the ca...

Recent research shows that signals derived from nitrate are involved in triggering widespread changes in gene expression, resulting in a reprogramming of nitrogen and carbon metabolism to facilitate the uptake and assimilation of nitrate, and to initiate accompanying changes in carbon metabolism. These nitrate-derived signals interact with signals generated further downstream in nitrogen metabo...

Two varieties of maize (Zea mays L.) grown in fields in black soils of northeast China were tested to study the dynamic changes of nitrogen metabolism and antioxidant enzyme activity in tassels of maize. Results showed that antioxidant enzyme activity in tassels of maize increased first and then decreased with the growing of maize, and reached peak value at shedding period. Pattern of proline w...