partial Protocols

Category: PCR Protocols: cDNA Synthesis Protocols

To generate "3'-end" partial cDNA clones, mRNA is reverse-transcribed using a "hybrid" primer (Qtotal, QT) that consists of two mixed bases (GATC/GAC followed by [T]17) and a unique 35-base oligonucleotide sequence (QI-QO).  Amplification is then performed using a primer containing part of this sequence (Qouter, Qo) (which now binds to each cDNA at its 3'-end) and a primer derived from the gene of interest, GSP1 (gene-specific primer 1). - [Read 3'-End cDNA Amplification Using Classic RACE Protocol]

Category: PCR Protocols: cDNA Synthesis Protocols

To generate "5'-end" partial cDNA clones using classic RACE, the first-strand products are generated by reverse transcription (primer extension) from a known gene-specific primer (GSP-RT).  Then, a poly(A) tail is appended using terminal deoxynucleotidyltransferase (Tdt) and dATP.  Amplification is carried out using three primers. - [Read 5'-End cDNA Amplification Using Classic RACE Protocol]

Category: DNA Protocols: Genomic DNA Library Protocols

Protocol for bacteriophage lamda plant genomic library construction. Includes: Preparation of the insert DNA; Pilot Sau3A Digestion; Full-scale partial digestions. - [Read Bacteriophage Lamda Plant Genomic Library Construction Protocol]

Category: DNA Protocols: Cosmid Library Protocols

Protocol describes how to construct a library of 35-45-kb fragments of genomic DNA in the double cos site cosmid vector, SuperCos-1. The steps include: Linearization and dephosphorylation of SuperCos-1 DNA; Partial digestion of high-molecular-weight DNA with MboI; Dephosphorylation of high-molecular-weight genomic DNA; Ligation of cosmid arms to genomic DNA: Packaging and plating recombinants; Isolation and analysis of recombinant cosmids: Validation of the library. - [Read Construction of Genomic DNA Libraries in Cosmid Vectors Protocol]

Category: Fungi Protocols: Neurospora Protocols

Information and tips on how to obtain and recognize partial-diploid strains that are duplicated for known chromosome segments. - [Read How to Obtain and Recognize Partial-Diploid Strains that are Duplicated for Known Chromosome Segment]

Category: Nucleic Acid Purification Protocols: DNA Isolation Protocols: Genomic DNA Isolation Protocols

Protocol is used to establish conditions for restriction enzyme digestion of eukaryotic genomic DNA that will generate fragments of a size appropriate for construction of genomic libraries.  To construct a genomic library, the average length of the starting genomic DNA should be at least eight times the capacity of the vector. - [Read Partial Digestion of Eukaryotic DNA for Use in Genomic Libraries: Pilot Reactions Protocol]

Category: Nucleic Acid Purification Protocols: DNA Isolation Protocols: Genomic DNA Isolation Protocols

The results of the pilot experiment (Partial Digestion of Eukaryotic DNA for Use in Genomic Libraries: Pilot Reactions) are used to establish conditions for partial digestion of eukaryotic DNA in the large-scale reactions described here. - [Read Partial Digestion of Eukaryotic DNA for Use in Genomic Libraries: Preparative Reactions Protocol]

Category: Mouse Protocols: Mouse Organ Removal Surgery Protocols

Protocol describes partial removal of a mouse liver to provide tissue for analysis. - [Read Partial Mouse Hepatectomy Protocol]

Category: Fungi Protocols: Neurospora Protocols

Protocol guide for the N. crassa yeast artificial chromosome library. Includes: Chromosome Walking; Hybridization screening of the YAC library; YAC restriction mapping and contig building; Preparation of chromosomal DNA plugs of YAC clones; Partial restriction enzyme digestion of YAC DNA plugs; Using CHEF gel analysis to resolve YAC clones; Southern Hybridization; Isolation of terminal restriction fragments from cloned DNA inserts in YAC clones; etc. - [Read Protocol Guide for the N. crassa Yeast Artificial Chromosome Library]

Category: PCR Protocols: cDNA Synthesis Protocols

3'-RACE reactions are used to isolate unknown 3' sequences or to map the 3' termini of mRNAs onto a gene sequence.  3'-RACE requires knowledge of a small region of sequence within either the target RNA or a partial clone of cDNA.  A population of mRNAs is transcribed into cDNA with an adaptor-primer consisting at its 3' end of a poly(T) tract and at its 5' end of an arbitrary sequence of 30-40 nucleotides. - [Read Rapid Amplification of 3' cDNA Ends 3'-RACE Protocol]

Category: PCR Protocols: cDNA Synthesis Protocols

This method is used to extend partial cDNA clones by amplifying the 5' sequences of the corresponding mRNAs.  The technique requires knowledge of a small region of sequence within the partial cDNA clone.  During PCR, the thermostable DNA polymerase is directed to the appropriate target RNA by a single primer derived from the region of known sequence. - [Read Rapid Amplification of 5' cDNA Ends 5'-RACE Protocol]

Category: Protein Protocols: Protein Quantitation Concentration Protocols

UV Absorbance 280 nm Protein Determination. Simple and quick method to accurately quantitate total protein in purified material or approximately quantitate total protein in crude lysates or partial purified material. Quantitation of the amount of protein in a solution is possible in a simple spectrometer.  Absorption of radiation in the near UV by proteins depends on the Tyr and Trp content (and to a very small extent on the amount of Phe and disulfide bonds).  Dr. Mario Lebendiker - [Read UV Absorbance 280 nm Protein Determination]