This protocol includes an ammonium sulfate cut, affigel blue chromatography and affinity chromatography. Mike A. Dyer Lab Harvard. - [Read Antibody Purification]
The key step is the lysis which solubilizes centrosomes away from nuclei by very low ionic strength lysis after treatment of cells with nocodazole and cytochalasin B. The released centrosomes are then centrifuged onto a Ficoll cushion (to avoid pelleting) and the interface between the lysate and the Ficoll is collected and the centrosomes are concentrated on a sucrose gradient. Fractions are assayed by spindown and double IF with 5051 serum and anti-tubulin and the pooled fractions are frozen... - [Read CHO Centrosome Prep Protocol]
Protocol for chromosomal DNA preparation. Protocol was developed for cultured cells but should be appropriate for dissociated tissues as well. - [Read Chromosomal DNA Preparation Protocol]
Protocol for cryosectioning. While the timing of the various steps in this protocol are probably not critical, process the tissue all at once to ensure that RNA and/or proteins do not get degraded. Includes: 20% Paraformaldehyde/4% Paraformaldehyde-PBS; Sucrose/PBS. - [Read Cryosectioning Protocol]
Protocol for CsCl prep of plasmid DNA. This is a standard large scale prep. For plasmid DNA which gives a yield of 0.5 1.0 mg. - [Read CsCl Prep of Plasmid DNA Protocol]
DNA Fragment Purification from Agarose or Acrylamide. The protocol for fragments from 200 bp to 10 kb the agarose purification is ideal. For smaller fragments (20 bp to 400 bp) the acrylamide purification is preferred. - [Read DNA Fragment Purification from Agarose or Acrylamide]
Protocol for DNA fragment purification from agarose or acrylamide. For fragments from 200 bp to 10 kb the agarose purification is ideal. For smaller fragments (20 bp to 400 bp) the acrylamide purification is preferred. - [Read DNA Fragment Purification from Agarose or Acrylamide Protocol]
DNA Fragment Purification from Agarose Protocol. This protocol is best for fragments from 200 bp to 10 kb the agarose purification is ideal. For smaller fragments (20 bp to 400 bp) the acrylamide purification is preferred. - [Read DNA Fragment Purification from Agarose 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.
In Vitro Translated Xenopus Mos Kinase Assay Protocol. In response to progesterone, immature Xenopus oocytes mature to eggs that can be fertilized. The Mos protein kinase is essential for oocyte maturation, most likely due to its ability to activate the MAP kinase cascade. This MAP kinase cascade eventually leads to the activation of Cdc2/cyclin B and entry into M phase. In this protocol, tagged Mos kinase is translated in vitro, immunopurified, and used in a kinase assay.