A protein of the sea urchin cortical granules is targeted to the fertilization envelope and contains an LDL-receptor-like motif

Article Abstract:

Analysis of the protein encoded by SFE9 (Stronglyocentrotus purpuratus fertilization envelope) reveals the presence of three regions of sequence repeat structure in SFE9. One of the regions exhibits significant similarity to the low-density lipoprotein (LDL)-receptor. During fertilization reaction SFE9 is incorporated and covalently cross-linked into the fertilization envelope. Specific protein-protein interactions are influenced by the strong repeat regions and the LDL-receptor unit of SFE9.

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Genetic organization and embryonic expression of the parahox genes in the sea urchin s. purpuratus: insights into the relationship between clustering and colinearity

Article Abstract:

A study examines the parahox genes of sea urchin strongylocentrotus purpuratus which display temporal colinearity. The embryogenesis of the sea urchin is discussed along with its spatial and temporal colinearity.

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In the beginning ... animal fertilization and sea urchin development

Article Abstract:

A study examines the role of spermatozoids in fertilization in sea urchins. The embryonic development of urchins is discussed.

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