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The Genome of the Sea Urchin Strongylocentrotus purpuratus
We report the sequence and analysis of the 814-megabase genome of the sea urchin Strongylocentrotus purpuratus, a model for developmental and systems biology. The sequencing strategy combined… Expand
A conserved germline multipotency program
The germline of multicellular animals is segregated from somatic tissues, which is an essential developmental process for the next generation. Although certain ecdysozoans and chordates segregate… Expand
Defending the zygote: search for the ancestral animal block to polyspermy.
Fertilization is the union of a single sperm and an egg, an event that results in a diploid embryo. Animals use many mechanisms to achieve this ratio; the most prevalent involves physically blocking… Expand
Vasa genes: Emerging roles in the germ line and in multipotent cells
Sexually reproducing metazoans establish a cell lineage during development that is ultimately dedicated to gamete production. Work in a variety of animals suggests that a group of conserved molecular… Expand
Germ line determinants are not localized early in sea urchin development, but do accumulate in the small micromere lineage.
- C. Juliano, E. Voronina, C. Stack, Maryanna Aldrich, A. R. Cameron, G. Wessel
- Biology, Medicine
- Developmental biology
- 1 December 2006
Two distinct modes of germ line determination are used throughout the animal kingdom: conditional-an inductive mechanism, and autonomous-an inheritance of maternal factors in early development. This… Expand
The biology of cortical granules.
An egg-that took weeks to months to make in the adult-can be extraordinarily transformed within minutes during its fertilization. This review will focus on the molecular biology of the specialized… Expand
Regulatory elements from the related spec genes of Strongylocentrotus purpuratus yield different spatial patterns with a lacZ reporter gene.
The Spec1 and Spec2 genes of Strongylocentrotus purpuratus are closely associated with the differentiation of aboral ectoderm. To examine cis-regulatory elements involved in the spatial expression of… Expand
Purified TPC Isoforms Form NAADP Receptors with Distinct Roles for Ca2+ Signaling and Endolysosomal Trafficking
Summary Intracellular Ca2+ signals constitute key elements in signal transduction. Of the three major Ca2+ mobilizing messengers described, the most potent, nicotinic acid adenine dinucleotide… Expand
Gastrulation in the sea urchin embryo requires the deposition of crosslinked collagen within the extracellular matrix.
This study demonstrates that a collagenous extracellular matrix (ECM) is necessary for gastrulation in the sea urchin embryo. The approach taken was to disrupt collagen processing with two types of… Expand
The major yolk protein in sea urchins is a transferrin-like, iron binding protein.
The major yolk protein (MYP) in sea urchins has historically been classified as a vitellogenin based on its abundance in the yolk platelets. Curiously, it is found in both sexes of sea urchins where… Expand