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Related Experiment Videos

A sea urchin genome project: sequence scan, virtual map, and additional resources.

R A Cameron1, G Mahairas, J P Rast

  • 1Stowers Institute for Medical Research, Kansas City, MO 64110, USA. acameron@caltech.edu

Proceedings of the National Academy of Sciences of the United States of America
|August 2, 2000
PubMed
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The Sea Urchin Genome Project mapped the Strongylocentrotus purpuratus genome, identifying ~27,350 genes and repetitive sequences. This foundational work aids developmental and molecular biology research.

Area of Science:

  • Genomics
  • Developmental Biology
  • Molecular Biology

Background:

  • Strongylocentrotus purpuratus is a key model organism in biological research.
  • A comprehensive genome map is crucial for understanding its biology.

Purpose of the Study:

  • To construct a virtual map of the sea urchin genome.
  • To estimate the number of protein-coding genes.
  • To characterize repetitive DNA sequences.

Main Methods:

  • Sequencing ends of 76,020 bacterial artificial chromosome (BAC) clones.
  • Utilizing BAC-end sequence tag connectors (STCs) for contig assembly.
  • Constructing arrayed cDNA libraries from various developmental and tissue stages.

Main Results:

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  • A virtual genome map was created with STCs spaced ~10 kb apart.
  • Estimated ~27,350 protein-coding genes in the sea urchin genome.
  • Characterized repetitive sequence families and initiated sequencing of the Hox gene complex.

Conclusions:

  • The generated genome map and data provide access to gene regions and repetitive elements.
  • Publicly available BAC-end sequences and ESTs facilitate further research.
  • This project lays the groundwork for advanced studies in sea urchin biology.