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      Versatile P(acman) BAC Libraries for Transgenesis Studies in Drosophila melanogaster

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          Abstract

          We constructed Drosophila melanogaster BAC libraries with 21-kb and 83-kb inserts in the P(acman) system. Clones representing 12-fold coverage and encompassing more than 95% of annotated genes were mapped onto the reference genome. These clones can be integrated into predetermined attP sites in the genome using ΦC31 integrase to rescue mutations. They can be modified through recombineering, for example to incorporate protein tags and assess expression patterns.

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          Most cited references45

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          An optimized transgenesis system for Drosophila using germ-line-specific phiC31 integrases.

          Germ-line transformation via transposable elements is a powerful tool to study gene function in Drosophila melanogaster. However, some inherent characteristics of transposon-mediated transgenesis limit its use for transgene analysis. Here, we circumvent these limitations by optimizing a phiC31-based integration system. We generated a collection of lines with precisely mapped attP sites that allow the insertion of transgenes into many different predetermined intergenic locations throughout the fly genome. By using regulatory elements of the nanos and vasa genes, we established endogenous sources of the phiC31 integrase, eliminating the difficulties of coinjecting integrase mRNA and raising the transformation efficiency. Moreover, to discriminate between specific and rare nonspecific integration events, a white gene-based reconstitution system was generated that enables visual selection for precise attP targeting. Finally, we demonstrate that our chromosomal attP sites can be modified in situ, extending their scope while retaining their properties as landing sites. The efficiency, ease-of-use, and versatility obtained here with the phiC31-based integration system represents an important advance in transgenesis and opens up the possibility of systematic, high-throughput screening of large cDNA sets and regulatory elements.
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            A gene expression atlas of the central nervous system based on bacterial artificial chromosomes.

            The mammalian central nervous system (CNS) contains a remarkable array of neural cells, each with a complex pattern of connections that together generate perceptions and higher brain functions. Here we describe a large-scale screen to create an atlas of CNS gene expression at the cellular level, and to provide a library of verified bacterial artificial chromosome (BAC) vectors and transgenic mouse lines that offer experimental access to CNS regions, cell classes and pathways. We illustrate the use of this atlas to derive novel insights into gene function in neural cells, and into principal steps of CNS development. The atlas, library of BAC vectors and BAC transgenic mice generated in this screen provide a rich resource that allows a broad array of investigations not previously available to the neuroscience community.
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              The generic genome browser: a building block for a model organism system database.

              The Generic Model Organism System Database Project (GMOD) seeks to develop reusable software components for model organism system databases. In this paper we describe the Generic Genome Browser (GBrowse), a Web-based application for displaying genomic annotations and other features. For the end user, features of the browser include the ability to scroll and zoom through arbitrary regions of a genome, to enter a region of the genome by searching for a landmark or performing a full text search of all features, and the ability to enable and disable tracks and change their relative order and appearance. The user can upload private annotations to view them in the context of the public ones, and publish those annotations to the community. For the data provider, features of the browser software include reliance on readily available open source components, simple installation, flexible configuration, and easy integration with other components of a model organism system Web site. GBrowse is freely available under an open source license. The software, its documentation, and support are available at http://www.gmod.org.
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                Author and article information

                Journal
                101215604
                32338
                Nat Methods
                Nature methods
                1548-7091
                1548-7105
                4 May 2009
                June 2009
                1 December 2009
                : 6
                : 6
                : 431-434
                Affiliations
                [1 ]Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
                [2 ]Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 97420, USA
                [3 ]Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030, USA
                [4 ]Institute for Genomics and Systems Biology and Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
                [5 ]Children’s Hospital Oakland Research Institute, Oakland, CA 94609, USA
                [6 ]Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
                [7 ]Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA
                Author notes
                [* ]Correspondence (H.J.B.): E-mail, hbellen@ 123456bcm.tmc.edu ; Tel, 713-798-5272; Fax, 713-798-3694
                [8]

                These authors contributed equally to this work.

                Article
                nihpa112300
                10.1038/nmeth.1331
                2784134
                19465919
                7b63660c-ec95-428f-9f5b-601f8f43ea37
                History
                Funding
                Funded by: National Human Genome Research Institute : NHGRI
                Funded by: National Institute of General Medical Sciences : NIGMS
                Funded by: Howard Hughes Medical Institute
                Award ID: U01 HG004264-01 ||HG
                Funded by: National Human Genome Research Institute : NHGRI
                Funded by: National Institute of General Medical Sciences : NIGMS
                Funded by: Howard Hughes Medical Institute
                Award ID: R01 GM080415-02 ||GM
                Funded by: National Human Genome Research Institute : NHGRI
                Funded by: National Institute of General Medical Sciences : NIGMS
                Funded by: Howard Hughes Medical Institute
                Award ID: ||HHMI_
                Categories
                Article

                Life sciences
                Life sciences

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