immunoprecipitated Protocols

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Assay for Immunoprecipitated Phosphoinositide 3-Kinase (PI 3 Kinase) Activity (in vitro) - http://www.upstate.com/misc/protocols.q.prot.e.assay/Assay+for+Immunoprecipitated+Phosphoinositide+3+Kinase++PI+3+Kinase++Activity+%3Ci%3E+in+vitro+%3C%2Fi%3E

Category: Signalling Signal Transduction Protocols: Protein Kinase Protocols

Immunoprecipitation assay for Phosphoinositide 3-Kinase (PI 3 Kinase) Activity (in vitro) Protocol. Upstate. - [Read Assay for Immunoprecipitated Phosphoinositide 3-Kinase (PI 3 Kinase) Activity (in vitro)]

Chromatin Immunoprecipitation (ChIP) of Protein Complexes Protocol - http://www.cshprotocols.org/cgi/content/abstract/2006/23/pdb.prot4560

Category: Immunology: Immunoprecipitation Protocols: Chromatin Immunoprecipitation Protocols

Protocol describes the use of chromatin immunoprecipitation technology (ChIP) to analyze interactions of proteins or protein complexes with DNA in vivo. In this approach, the material is fixed with formaldehyde to preserve DNA-protein and protein-protein associations, the cells are lysed, and the chromatin is cut and solubilized. The chromatin suspension is immunoprecipitated with an antibody against the protein(s) of interest, and the coimmunoprecipitated DNA fragments are analyzed. - [Read Chromatin Immunoprecipitation (ChIP) of Protein Complexes Protocol]

Identification of Associated Proteins by Coimmunoprecipitation Protocol - http://www.cshprotocols.org/cgi/content/extract/2006/2/pdb.prot3898

Category: Immunology: Immunoprecipitation Protocols: Immunoprecipitation of Radiolabeled Cells Protocols

Coimmunoprecipitation is most commonly used to test whether two proteins of interest are associated in vivo, but it can also be used to identify novel interacting partners of a target protein. In both cases, the cells, which may have been labeled with [35S]methionine, are harvested and lysed under conditions that preserve protein-protein interactions. The target protein is specifically immunoprecipitated from the cell extracts, and the immunoprecipitates are fractionated by SDS-PAGE. - [Read Identification of Associated Proteins by Coimmunoprecipitation Protocol]

Immunoblotting: Preparing Immunoprecipitated Proteins Protocol - http://www.cshprotocols.org/cgi/content/extract/2006/21/pdb.prot4300

Category: Western Blot Protocols

Protein immunoprecipitation can be a useful preparative step for immunoblotting. For very rare proteins, the protein of interest can be purified and concentrated by standard immunoprecipitation techniques before immunoblotting. In addition, protein-protein interactions can be tested with an immunoprecipitating antibody that is specific for one protein of a complex and an immunoblotting antibody that is specific for a second member of the complex. - [Read Immunoblotting: Preparing Immunoprecipitated Proteins Protocol]

Kinase Assay Using In Vitro Translated Xenopus Mos Kinase - http://www.bio.com/protocolstools/protocol.jhtml?id=p912

Category: Signalling Signal Transduction Protocols

Protocol describes how tagged Mos kinase is translated in vitro, immunopurified, and used in a kinase assay. Protocol includes: Translation of Xenopus Mos Kinase; Antibody to Antigen Binding; Protein A Sepharose to Antibody Binding; Kinase Reactions on Immunoprecipitated Material; Polyacrylamide Gel Analysis of Immunoprecipitates. Includes protocol hints. - [Read Kinase Assay Using In Vitro Translated Xenopus Mos Kinase]

Protocol for Competitive Ligand Binding to Cortical Receptor using Crosslinking - http://www.bio.com/protocolstools/protocol.jhtml?id=p1254

Category: Signalling Signal Transduction Protocols

Protocol describes a competitive ligand binding assay for cortical neurotrophin receptors. Following binding in the presence of competitor, the bound radiolabeled ligand is cross-linked to the receptor. The cells are lysed and the ligand-receptor complexes are immunoprecipitated using a pan-trk (tyrosine kinase receptor) antibody. Protocol includes:Preparation of Cortical Tissue for Competitive Crosslinking, Competitive Binding, Crosslinking Ligand to Receptor, Lysis and Immunoprecipitation etc - [Read Protocol for Competitive Ligand Binding to Cortical Receptor using Crosslinking]

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In Vitro Translated Xenopus Mos Kinase Assay Protocol

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.