title: Sequence and analysis of chromosome 1 of the plant Arabidopsis thaliana.
abstract: The genome of the flowering plant Arabidopsis thaliana has five chromosomes. Here we report the sequence of the largest, chromosome 1, in two contigs of around 14.2 and 14.6 megabases. The contigs extend from the telomeres to the centromeric borders, regions rich in transposons, retrotransposons and repetitive elements such as the 180-base-pair repeat. The chromosome represents 25% of the genome and contains about 6,850 open reading frames, 236 transfer RNAs (tRNAs) and 12 small nuclear RNAs. There are two clusters of tRNA genes at different places on the chromosome. One consists of 27 tRNA(Pro) genes and the other contains 27 tandem repeats of tRNA(Tyr)-tRNA(Tyr)-tRNA(Ser) genes. Chromosome 1 contains about 300 gene families with clustered duplications. There are also many repeat elements, representing 8% of the sequence.
authors.affiliation: Plant Gene Expression Center/USDA-U.C. Berkley, Albany, California 94710, USA. theo@nature.berkeley.edu
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mesh_terms: D017360:Arabidopsis / Q000235:genetics*; D002874:Chromosome Mapping; D018744:DNA, Plant; D020440:Gene Duplication; D018745:Genome, Plant; D008969:Molecular Sequence Data; D005810:Multigene Family; D010940:Plant Proteins / Q000235:genetics; D012343:RNA, Transfer / Q000235:genetics
chemical_list: D018744:DNA, Plant; D010940:Plant Proteins; D012343:RNA, Transfer