The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Detection of proteins binding to short RNA.DNA hybrids or short antisense oligonucleotides in Xenopus laevis oocytes and human macrophage cell extracts by photoaffinity radiolabeling.

Using a 12 base pair RNA.DNA hybrid, substituted with bromouracil on either the RNA or DNA strand, we have detected by photoaffinity radiolabeling a limited set of proteins able to bind to RNA.DNA hybrids in both Xenopus oocyte extracts and human macrophage extracts. Resulting patterns of crosslinked proteins were highly dependent on the strand (DNA or RNA) that was substituted. With one exception, none of the proteins investigated in competition experiments was found to be absolutely specific for RNA.DNA hybrids, as at least one other nucleic acid, either single-stranded DNA or single-stranded RNA, was found to compete efficiently. None of the proteins detected in this assay correspond to the size expected for RNases H. Using the same methodology, we have detected proteins that bind to short oligodeoxyribonucleotides. Although we have essentially detected in Xenopus oocytes one prominent protein of approximately 75 kDa, corresponding to replication protein A ( RPA) whatever the oligonucleotide used, the patterns obtained with extracts of human macrophages were more complex and dependent on the oligonucleotide used. If a protein corresponding to RPA was observed most of the time, other crosslinks of similar or sometimes higher intensity were also detected. Interestingly, among these, one protein of 35 kDa appears paradoxically to bind and crosslink to a dodecamer but not to an octadecamer containing the same sequence placed either at its 3'-end or 5'-end.[1]


WikiGenes - Universities