Abstract
Analysis of Plasmodium falciparum chromosome 3, and comparison with chromosome 2, highlights novel features of chromosome organization and gene structure. The sub-telomeric regions of chromosome 3 show a conserved order of features, including repetitive DNA sequences, members of multigene families involved in pathogenesis and antigenic variation, a number of conserved pseudogenes, and several genes of unknown function. A putative centromere has been identified that has a core region of about 2 kilobases with an extremely high (adenine + thymidine) composition and arrays of tandem repeats. We have predicted 215 protein-coding genes and two transfer RNA genes in the 1,060,106-base-pair chromosome sequence. The predicted protein-coding genes can be divided into three main classes: 52.6% are not spliced, 45.1% have a large exon with short additional 5′ or 3′ exons, and 2.3% have a multiple exon structure more typical of higher eukaryotes.
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Acknowledgements
We thank the staff in the subcloning, gel-pouring and media groups for their support; the computer support and software development groups; J. Thompson and A. Cowman for gifts of YAC clones and for advice; D. Schwartz for optical and X. Su for genetic map information; B. Streipen, D. Holt and D. Kemp for communicating results before publication; Z. Christodoulou, R. Pinches and S. Lee for technical assistance; the other members of the Malaria Genome Sequencing consortium for useful discussions; K. Rutherford and R. Summers for help with Fig.1 ; and J. Parkhill for critical reading of the manuscript. This work was funded by the Wellcome Trust.
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Bowman, S., Lawson, D., Basham, D. et al. The complete nucleotide sequence of chromosome 3 of Plasmodium falciparum. Nature 400, 532–538 (1999). https://doi.org/10.1038/22964
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DOI: https://doi.org/10.1038/22964
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