filamentous Protocols

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Construction of the Sequencing Library Protocol - http://sequence-www.stanford.edu/protocols/library.html

Category: DNA Protocols: DNA Sequencing Protocols

Protocol first describes the vector preparation and, then, describes the insert preparation. Vital to have an excellent vector in order to produce a sequencing library. Protocol employs the male-specific coliphage M13 as the sequencing vector. M13 is a filamentous phage with a single-stranded, circular genome. M13 is widely used as a vector because many versions are available commercially and because M13 has certain advantages. - [Read Construction of the Sequencing Library Protocol]

Preparation of Single-stranded Bacteriophage M13 DNA Protocol - http://www.cshprotocols.org/cgi/content/extract/2006/2/pdb.prot3686

Category: Viral Manipulation Protocols: M13 Phage Manipulation Protocols

Bacteriophage M13 single-stranded DNA is prepared from virus particles secreted by infected cells into the surrounding medium. The filamentous particles are concentrated by precipitation from a high-ionic-strength buffer with polyethylene glycol. Subsequent extraction with phenol releases the single-stranded DNA, which is then collected by precipitation with ethanol. This protocol is generally used to prepare single-stranded DNA from a small number of M13 isolates. - [Read Preparation of Single-stranded Bacteriophage M13 DNA Protocol]

Producing Single-stranded DNA with Phagemid Vectors Protocol - http://www.cshprotocols.org/cgi/content/extract/2006/2/pdb.prot4019

Category: Viral Manipulation Protocols: Phage Protocols

Protocol describes methods to superinfect bacteria carrying a recombinant phagemid with a high-titer stock of an appropriate helper virus and to assay the yield of filamentous virus particles that carry single-stranded copies of the phagemid DNA. The key to success in using phagemids is to prepare a stock of helper virus whose titer is accurately known. - [Read Producing Single-stranded DNA with Phagemid Vectors Protocol]

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Absorption Spectroscopy and Quantification of Filamentous Phage Protocol

Unlike spherical phage, such as T4 and λ, which have roughly equal weight ratios of protein to DNA, filamentous phage have about six times more protein than DNA; the protein therefore contributes substantially to the absorption spectrum.