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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Matranga, V. Cervello, M. Kuwasaki, B. Noll, H. Humphreys, T. Adelson, D. |
| Abstract | Cell adhesion in the sea urchin blastula is mediated by a 22S genus-specific glycoprotein complex consisting initially of six 160-kDa subunits that are processed proteolytically as development proceeds. Noncytolytic removal of the 22S particle from the surface with either 2.5% butanol or trypsin renders dissociated cells reaggregation incompetent, and addition restores reaggregation and development. Polyclonal antibodies against the 22S complex prevent reaggregation in a genus-specific manner while monoclonal antibodies stain cell surface structures in a pattern consistent with a code that specifies the position of a cell in the embryo by a unique combination of subunits in its cell adhesion particles. The existence of similar particles in Drosophila and amphibian embryos suggests that these glycoprotein complexes are a general class of organelles, the toposomes, that in the embryo mediate cell adhesion and express positional information. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 23 |
| Volume Number | 82 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1985-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Blastocyst Cytology Cell Adhesion Sea Urchins Animals Antibodies, Monoclonal Butanols Calcium Metabolism Cell Aggregation Cell Membrane Glycoproteins Physiology Molecular Weight Organoids Trypsin Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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