A highly cost-effective and easy-to-assemble cultivation system suitable for middle scale-size culturing of bacterial cells is described. In the culture, from a flat-shaped air-stone with large surface area, fine bubbles are generated with a low-cost air pump available in an aquarium
fish shop, and cell-agitation and oxygen supply are efficiently conducted by fine bubbles simultaneously. Growth properties of the cells and their saturation density are comparable to those in a conventional culture system. The expression of recombinant protein was revealed to be similar to
conventional methods. The system does not require any expensive machines or equipments. In addition, all equipments except plastic flat-shaped airstone are reusable after sterilization. Due to the low cost, the ease to use and multiple cultivations at once, our system may enable to find better
culture conditions, to scale-up with ease and to perform timesaving efficient protein production.
Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.