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

Journal Article (Journal Article)

Results of a first-stage Sea Urchin Genome Project are summarized here. The species chosen was Strongylocentrotus purpuratus, a research model of major importance in developmental and molecular biology. A virtual map of the genome was constructed by sequencing the ends of 76,020 bacterial artificial chromosome (BAC) recombinants (average length, 125 kb). The BAC-end sequence tag connectors (STCs) occur an average of 10 kb apart, and, together with restriction digest patterns recorded for the same BAC clones, they provide immediate access to contigs of several hundred kilobases surrounding any gene of interest. The STCs survey >5% of the genome and provide the estimate that this genome contains approximately 27,350 protein-coding genes. The frequency distribution and canonical sequences of all middle and highly repetitive sequence families in the genome were obtained from the STCs as well. The 500-kb Hox gene complex of this species is being sequenced in its entirety. In addition, arrayed cDNA libraries of >10(5) clones each were constructed from every major stage of embryogenesis, several individual cell types, and adult tissues and are available to the community. The accumulated STC data and an expanding expressed sequence tag database (at present including >12, 000 sequences) have been reported to GenBank and are accessible on public web sites.

Full Text

Duke Authors

Cited Authors

  • Cameron, RA; Mahairas, G; Rast, JP; Martinez, P; Biondi, TR; Swartzell, S; Wallace, JC; Poustka, AJ; Livingston, BT; Wray, GA; Ettensohn, CA; Lehrach, H; Britten, RJ; Davidson, EH; Hood, L

Published Date

  • August 2000

Published In

Volume / Issue

  • 97 / 17

Start / End Page

  • 9514 - 9518

PubMed ID

  • 10920195

Pubmed Central ID

  • PMC16896

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.160261897


  • eng