Cloning and expression of new receptors belonging to the immunoglobulin superfamily from the marine sponge Geodia cydonium

1999 ◽  
Vol 49 (9) ◽  
pp. 751-763 ◽  
Author(s):  
Barbara Blumbach ◽  
Bärbel Diehl-Seifert ◽  
Jürgen Seack ◽  
Renate Steffen ◽  
Isabel M. Müller ◽  
...  
Keyword(s):  
Marine Sponge ◽  
Cloning And Expression ◽  
Immunoglobulin Superfamily ◽  
Geodia Cydonium

Fibronectin is apparently not involved in species-specific reaggregation of cells from the marine sponge geodia cydonium

1982 ◽  
Vol 19 (4) ◽  
pp. 395-404 ◽  
Author(s):  
J. Conrad ◽  
B. Diehl-Seifert ◽  
R. K. Zahn ◽  
G. Uhlenbruck ◽  
E. Zimmermann ◽  
...  
Keyword(s):  
Marine Sponge ◽  
Geodia Cydonium ◽  
Species Specific

Cloning of the polyubiquitin cDNA from the marine sponge Geodia cydonium and its preferential expression during reaggregation of cells

1993 ◽  
Vol 106 (2) ◽  
pp. 545-553
Author(s):  
K. Pfeifer ◽  
W. Frank ◽  
H.C. Schroder ◽  
V. Gamulin ◽  
B. Rinkevich ◽  
...  
Keyword(s):  
Marine Sponge ◽  
State Level ◽  
Degradation Process ◽  
Strong Increase ◽  
Predicted Amino Acid Sequence ◽  
Isolated Cells ◽  
Reading Frame ◽  
Preferential Expression ◽  
Geodia Cydonium

Ubiquitination of proteins is a critical step in the controlled degradation process of many polypeptides. Here we show that sponges, the simplest multicellular group of eukaryotic organisms, are also equipped with the ubiquitin pathway. The polyubiquitin cDNA was isolated and characterized from the marine sponge Geodia cydonium. The open reading frame contains six ubiquitin moieties, which are lined up head to tail without spacers. A comparison of the predicted amino acid sequence of the six sponge ubiquitin-coding units with those from other organisms revealed a high degree of homology (> 93%). The ubiquitin gene is expressed to almost the same extent in the two main compartments of the sponge, the cortex and the medulla. However, only in the cortex are detectable amounts of the ubiquitin protein synthesized. The ubiquitin protein isolated from the sponge organism was found to initiate protein degradation in the heterologous reticulocyte system in the same manner as bovine ubiquitin. In vitro studies with dissociated sponge cells revealed that the homologous aggregation factor causes (i) a strong increase in the steady-state level of mRNA coding for ubiquitin and (ii) a drastic increase in ubiquitin protein synthesis, while the homologous lectin failed to display that effect in isolated cells. These data suggest that ubiquitin may play a role in sponge morphogenesis.

MODULATION OF 2′-5′OLIGOADENYLATE SYNTHETASE BY ENVIRONMENTAL STRESS IN THE MARINE SPONGE GEODIA CYDONIUM

1997 ◽  
Vol 16 (7) ◽  
pp. 1403
Author(s):  
Heinz C. Schröder ◽  
Matthias Wiens ◽  
Anne Kuusksalu ◽  
Merike Kelve ◽  
Werner E.G. Müller
Keyword(s):  
Environmental Stress ◽  
Marine Sponge ◽  
Oligoadenylate Synthetase ◽  
Geodia Cydonium

Chromatin structure from the marine sponge Geodia cydonium

1983 ◽  
Vol 76 (4) ◽  
pp. 769-775 ◽  
Author(s):  
Keith W. Dawes ◽  
Michael Bachmann ◽  
Rudolf K. Zahn ◽  
Werner E.G. Müller
Keyword(s):  
Marine Sponge ◽  
Chromatin Structure ◽  
Geodia Cydonium
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