Water is one of the most important compounds for existence nature and human life. Nowadays, as a result increasing industrialization industrial production, heavy metals pollute clean water resources. Copper (II) ions are leading in industry. There high proportion copper especially production printed electrical electronic circuit, paper silicon synthesis, wood preservation, fertilizer oil refini...

Plasmid instability is a significant concern in the industrial utilization of microorganisms for protein or DNA production. Here we report on the development of a new and highly effective stabilization system based on the use of the ccd antidote/poison genes. For the first time, we separated the antidote gene from the poison gene: localizing the former in the plasmid and integrating the latter ...