Global Expression Studies of the Arabidopsis Genome


    PI, Joseph R. Ecker, The Salk Institute for Biological Studies, 
    10010 N. Torrey Pines Road, La Jolla, CA 92037, Email: ecker@salk.edu
    
    Co-PI, Ronald W. Davis, Stanford Genome Technology Center, Stanford University,
    855 California Ave, Palo Alto, CA 94304, Email: dbowe@sequence.stanford.edu
    
    Co-PI, Athanasios Theologis, Plant Gene Expression Center, U.C. Berkeley, 
    800 Buchanan Street, Albany, CA 94022, Email theo@nature.berkeley.edu
    
    
    
    1. Project Summary 
    
    In order to carry out functional genomic and proteomic studies using
    the recently completed Arabidopsis genomic sequence, we must be able
    to readily manipulate and express each of the genes as proteins.
    Unfortunately, current computational approaches for Arabidopsis gene
    prediction are unable to precisely predict or, in some cases, even
    recognize many of the genes. These limitations prohibit the use of
    new emerging technologies for global gene functional analysis. The
    aim of our program is to experimentally determine the transcription
    units for all Arabidopsis genes  and create a 
    gold standard set of
    open-reading-frame (ORF) clones. This will provide an accurate
    determination of each of the gene structures and allow for the
    construction  of full-length cDNAs for each gene. Determining the
    full-length sequences for the transcription units will resolve
    ambiguities in the computationally annotated genomic sequence,
    allowing precise position of introns/exons and 5' transcription start
    and 3' polyadenyation addition sites,. The identification of
    full-length cDNAs for all Arabidopsis genes is of primary importance
    for the entire plant biology community as these clones will be
    essential for many future functional genomic and proteomic studies.
    
    
    2. Deliverables of the SSP Consortium.
    
    Isolation and complete sequencing of full-length cDNAs for 8,000
    genes with immediate deposit of cDNA sequences in GenBank.
    SSP-sequenced RAFL cDNAs are available through the RIKEN Bioresource
    Center
    Construction of 8,000 gold standard
     ORF clones in a universal recombination
    plasmid vector (pUNI). The ORF clones are fully sequence validated
    and are error-free. These clones are deposited in the Arabidopsis
    Biological Resource Center (ABRC) at Ohio State University with no
    material transfer agreement. Among the 8,000 ORF clones, 7,000 will
    be constructed by PCR from full-length cDNAs and 1,000 will be
    identified from non-expressed annotated (hypothetical) genes.
    Identification of novel Arabidopsis transcription units using
    custom Affymetrix genome tiling arrays and mRNA samples prepared from
    various plant tissues and conditions.
    
    URL for SSP Consortium Project Deliverables:
    http://signal.salk.edu/SSP/index.html
    

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