A Method for Assaying Deubiquitinating Enzymes. Lee et al., Biol Proced Online. May 1998. A general method for the assay of deubiquitinating enzymes was described in detail using 125I-labeled ubiquitin-fused αNH-MHISPPEPESEEEEEHYC (referred to as Ub-PESTc) as a substrate. - [Read A Method for Assaying Deubiquitinating Enzymes]
An oligodeoxynucleotide primer hybridized to mRNA is extended by an RNA-dependent DNA polymerase to create a cDNA copy that can be amplified by PCR. Depending on the purpose of the experiment, the primer for first-strand cDNA synthesis can be specifically designed to hybridize to a particular target gene, or a general primer such as oligo(dT) can be used to prime cDNA synthesis from essentially all mammalian mRNAs - [Read Amplification of cDNA Generated by Reverse Transcription of mRNA Protocol]
The bradford dye-binding assay is a colorimetric assay for measuring total protein concentration. It involves the binding of Coomassie Brilliant blue to protein. There is no interference from cations nor from carbohydrates such as sucrose.
Detergents such as sodium dodecyl sulfate and triton x-100 can interfere with the assay, as well as strongly alkaline solutions.
Includes a general overview of the procedure and preparation of the standards in the protocol. - [Read Bradford Assay Method]
The following protocol can be used for the development of stable cell lines expressing GFP fusion proteins. Although optimal transfection procedures (e.g., calcium phosphate, electroporation, or FuGENE 6 [Roche Applied Science]) vary depending on cell type, this general transfection procedure has been successful for stable transfection of HeLa, A-431, U2OS, BHK, and HT1080 cells. - [Read Constructing and Expressing GFP Fusion Proteins]
When imaging specimens in the optical microscope, differences in intensity and/or color create image contrast, which allows individual features and details of the specimen to become visible. Contrast is defined as the difference in light intensity between the image and the adjacent background relative to the overall background intensity. In general, a minimum contrast value of 0.02 (2 percent) is needed by the human eye to distinguish differences between the image and its background. - [Read Contrast in Optical Microscopy]
Protocols for detection and purification of proteins tagged with a particular epitope, the FLAG tag, although the same general approach can be applied to other epitope tags. The protocols employ the anti-FLAG M2 antibody to detect and purify FLAG-tagged proteins. The methods presented are immunoprecipitation of FLAG fusion proteins from cells using an anti-FLAG M2 affinity gel, detection of FLAG fusion proteins by western blotting, and purification of FLAG fusion proteins by anti-FLAG. - [Read Epitope Tagging of Recombinant Proteins Protocol]
General Cell Culture- http://research.cm.utexas.edu/bkitto/Kittolabpage/Protocols/Immunology/GeneralCulture.html
Covers general things you need to know to get started in cell culture work. Includes: Sterile Technique; Growth of Your Cell Culture; - [Read General Cell Culture]
There are multiple variations to this protocol, but they find that this one works well in all cases tested. Mirmira Lab. - [Read General EMSA Protocol]
Advantages of Freezing Cell Cultures, Practical Aspects of Cell Freezing, Cryoprotection, Storage Vessels, Labeling and Recordkeeping, Recovery, Managing a Cell Repository, cell selection, Problem Solving Suggestions.
Corning. by John A. Ryan - [Read General Guide for Cryogenically Storing Animal Cell Cultures]
General protocol for Ras, Rac, Cdc42, and Rho activation assay. Includes: Affinity Precipitation/Immunoblot Protocol, Cell Culture and Extract Preparation (Adherent and Non Adherent cells), GTPγS/GDP Loading for Positive and Negative Controls, Ras, Rac ,Cdc42, and Rho Pull-Down Assay and Western Blot and Detection. - [Read General Method for Ras, Rac, Cdc42, and Rho Activation Assay]
Fixation must convert the soluble contents of the cell (ie proteins, carbohydrates, ... http://www.protocol-online.org/prot/Histology/Fixation/ ...General Overview of Histology and Tissue Fixation. BIOS 576. Rice. - [Read General Overview of Histology]
General PCR Protocol- http://www.biology.lsa.umich.edu/research/labs/maddock/protocols/PCR/general_pcr_protocol.html
Hints and precautions for the care, feeding and breeding of Neurospora. Includes: Crossing; Tips on handling ascospoes
General Laboratory Practices; Stockkeeping; Mutagenesis and enrichment; Tips for encouraging colonial growth; Solutions and media; Handling Heterokaryons. - [Read Hints and Precautions for the Care, Feeding and Breeding of Neurospora]
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.
This protocol a protocol on how to generate transfected embryonic stem (ES) cell clones. The previous protocol in this series is the Protocol for Electroporation of ES cells. The next protocol in the series is the Protocol on Disaggregation, Expansion, and Freezing of Transfected ES Clones.
This protocol describes the electroporation of the BMH 81-17 mut S strain that is recommended for tranformation of the site directed mutagenesis of dsDNA (See Protocol on Site-Directed Mutagenesis on Double Stranded DNA). BMH 81-17 mut S are a mismatch repair defective (mut S) Escherichia coli strain. The probability that the two mutations will cosegregate during the first round of DNA replication is increased in this strain.
The protocol gives general considerations for the design of targeting vectors for transgenic mice. The protocol shares tips in the design of knock-out and knock-in vectors and some of their strategies for producing homologously recombined embryonic stem cells.