forms Protocols

Category: Cloning Protocols

Adaptors are short double-stranded synthetic oligonucleotides that carry an internal restriction endonuclease recognition site and single-stranded tails at one or both ends. Adaptors are used to exchange restriction sites at the termini of linear DNA molecules. They may be purchased in phosphorylated and unphosphorylated forms. - [Read Attaching Adaptors to Protruding Termini Protocol]

Category: Transfection Protocols: Calcium Phosphate Transfection Protocols

Calcium phosphate forms an insoluble precipitate with DNA, which attaches to the cell surface and is taken into the cells by endocytosis. The protocol is easily adapted for use with other types of cells, both adherent and nonadherent. This protocol is a modified version of a method published by Jordan et al. (1996) who rigorously optimized calcium-phosphate-based transfection methods for Chinese hamster ovary cells and the 293 line of human embryonic kidney cells. - [Read Calcium-phosphate-mediated Transfection of Eukaryotic Cells with Plasmid DNAs]

Category: Chromatography Protocols: Immobilized Metal Ion Affinity Chromatography Protocols

Immobilized metal ion affinity chromatography (IMAC) exploits a molecule’s affinity for chelated metal ions.  The amino acid histidine present in many proteins forms complexes with transition metal ions such as Cu2+, Zn2+, Ni2+ and Fe3+.  Chelating Sepharose™ Fast Flow with a suitable immobilized metal ion will therefore selectively retain proteins with exposed histidine. - [Read Chelating Sepharose Fast Flow Protocol]

Category: PCR Protocols

Protocol for collection of specimens for detection of measles virus RNA by PCR. - [Read Collection of Specimens for Detection of Measles Virus RNA by PCR Protocol]

Category: Microscopy Protocols: Confocal Microscopy Protocols

There are two major forms of laser scanning microscopy: confocal laser scanning microscopy (CLSM) and multiphoton laser scanning microscopy (MPLSM). Information on: X-t scans and X-Y scans; Confocal Laser Scanning Microscopy; Multiphoton Laser Scanning Microscopy; MPLSM requires no pin hole; Advantages of MPLSM over CLSM. - [Read Confocal Laser Scanning Microscopy]

Category: Bacterial Protocols

Culture protocols and information for T brucei. Detailed guide to the practice and history ofTrypanosoma brucei cultivation. This covers the culture of bloodstream and procyclic forms in liquid media and on agarose plates. - [Read Culture Protocols and Information for T brucei]

Category: Immunology: Immunofluorescence Protocols

The study of the activation of DNA damage response factors at the single cell level relies on the observation of their accumulation (or the accumulation of their activated forms) in nuclear foci by plain immunofluorescence techniques. - [Read Indirect Immunofluorescence with Preextraction (In Situ Cell Fractionation) Protocol]

Category: Cell Biology and Cell Culture: Apoptosis Protocols: Apoptosis Analysis

Measurement of Apoptosis and Other Forms of Cell Death. Jagan Muppidi, Melissa Porter, and Richard M. Siegel. As programmed cell death (PCD) or apoptosis has emerged as an important regulator of development and homeostasis in multicellular organisms, methods to quantify apoptosis and to distinguish it from necrosis have been developed. This unit presents a set of assays for these purposes, many of which are technically very simple and ideally suited to the study of hematopoietic cells. - [Read Measurement of Apoptosis and Other Forms of Cell Death]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

Bacteriophage M13 forms turbid plaques on lawns of male strains of E. coli. - [Read Plating Bacteriophage M13 Protocol]

Category: Antibody Protocols: Antibody Production Protocols

Polyclonal antibodies can be isolated from animal plasma or serum using the procedure described in this protocol. The Gradiflow BF400 instrument has two liquid streams that circulate through a separation cartridge positioned between two electrodes and composed of three hydrogel polyacrylamide membranes, which define the channels for the two sample streams. The central membrane forms a physical barrier between the two streams. - [Read Preparation of Polyclonal Antibodies from Plasma or Serum Using the Gradiflow BF400]

Category: Viral Manipulation Protocols: M13 Phage Manipulation Protocols

Plaques formed by M13 bacteriophages or bacterial colonies transformed by plasmids carrying specific mutations can be detected by hybridization, using a radiolabeled oligonucleotide that forms a perfect duplex with the mutant sequence. Hybridization is carried out under conditions of low stringency that allow the radiolabeled oligonucleotide to anneal to both mutant and wild-type DNAs. - [Read Screening Recombinant Clones for Site-directed Mutagenesis by Hybridization to Radiolabeled Oligos]