Polybrene and DMSO can be used to achieve stable transformation of several types of cells by plasmid DNA. The yield of transformants is up to 15-fold greater with Polybrene than with calcium phosphate-DNA coprecipitation. However, there is no difference between the two methods in the efficiency of transformation of cells by high-molecular-weight DNA. - [Read DNA Transfection Using Polybrene Protocol]
No special treatment is required to prepare a lysate for the active collection. The following procedure should be used for long-term storage of lambda clones in the archival collections. The phage are diluted in media containing 7% DMSO and frozen at -80 degrees C. - [Read Long Term Lambda Phage Storage Protocol]
This protocol describes the method for making microarray printing plates in a 96
well format. (The same procedure applies to a 384 well format as well.) Hasseman. TIGR Microarray Protocols - [Read MAKING MICROARRAY PRINTING PLATES (IN DMSO)]
Procedure details the establishment of an amplification procedure for GC-rich sequences. The DNA fragments of interest are amplified in the presence of either 5% DMSO, 1 M betaine, 2 M betaine, 1 M betaine, and 5% DMSO; 2 M betaine and 5% DMSO; 0.4 M tetramethylene sulfone; or without any of the enhancers. - [Read PCR Amplification of Highly GC-Rich Regions Protocol]
Tubulin is polymerized into microtubules by incubating tubulin at 37°C with GTP. A nucleation seed is added when the purpose is to assay microtubule elongation. Tubulin can also be polymerized for the purposes of recycling the tubulin or labeling the microtubules with fluorescently labeled tubulin. Based on the protocol by Timothy Mitchison of Harvard University.