Seeking Innovative Affinity Approaches: A Performance Comparison between Magnetic Nanoparticle Agglomerates and Chromatography Resins for Antibody Recovery.

Monoclonal antibodies are key molecules in medicine and pharmaceuticals. A potentially crucial drawback for faster advances in research here is their high price due to the extremely expensive antibody purification process, particularly the affinity capture step. Affinity chromatography materials have to demonstrate the high binding capacity and recovery efficiency as well as superior chemical and mechanical stability.

Impact of rare codons and the functional coproduction of rate-limiting tRNAs on recombinant protein production in Bacillus megaterium.

The Gram-positive bacterium Bacillus megaterium was systematically developed for the plasmid-based production of recombinant proteins at the gram-per-liter scale. The amount of protein produced per cell was found strongly correlated to the codon usage of the heterologous gene of interest in comparison to the codon usage of B. megaterium.

A Multiprotein DNA Translocation Complex Directs Intramycelial Plasmid Spreading during Streptomyces Conjugation.

Unlabelled: Conjugative DNA transfer in mycelial Streptomyces is a unique process involving the transfer of a double-stranded plasmid from the donor into the recipient and the subsequent spreading of the transferred plasmid within the recipient mycelium. This process is associated with growth retardation of the recipient and manifested by the formation of circular inhibition zones, named pocks. To characterize the unique Streptomyces DNA transfer machinery, we replaced each gene of the conjugative 12.

Conjugal plasmid transfer in Streptomyces resembles bacterial chromosome segregation by FtsK/SpoIIIE.

Conjugation is a major route of horizontal gene transfer, the driving force in the evolution of bacterial genomes. Antibiotic producing soil bacteria of the genus Streptomyces transfer DNA in a unique process involving a single plasmid-encoded protein TraB and a double-stranded DNA molecule. However, the molecular function of TraB in directing DNA transfer from a donor into a recipient cell is unknown.