scholarly journals Select microRNAs are essential for early development in the sea urchin

2012 ◽  
Vol 362 (1) ◽  
pp. 104-113 ◽  
Author(s):  
Jia L. Song ◽  
Marlon Stoeckius ◽  
Jonas Maaskola ◽  
Marc Friedländer ◽  
Nadezda Stepicheva ◽  
...  
Keyword(s):  
Early Development ◽  
Sea Urchin

Synthesis of nuclear and cytoplasmic proteins in the early development of fishes and echinoderms

Development ◽  
1971 ◽  
Vol 26 (3) ◽  
pp. 611-622
Author(s):  
Maya R. Krigsgaber ◽  
Alla A. Kostomarova ◽  
Tamara A. Terekhova ◽  
Tatiana A. Burakova
Keyword(s):  
Amino Acids ◽  
Early Development ◽  
Sea Urchin ◽  
Nuclear Volume ◽  
Sea Urchin Embryos ◽  
Cytoplasmic Proteins ◽  
Specific Activities ◽  
Strongylocentrotus Nudus ◽  
Silver Grains ◽  
Misgurnus Fossilis

Synthesis of nuclear and cytoplasmic proteins was studied biochemically and autoradiographically in early loach (Misgurnus fossilis) and sea-urchin (Strongylocentrotus nudus) embryos. After incubation with [14C]amino acids for 5–120 min the ratio of the specific activities of nuclear, mitochondrial and 12000 g supernatant proteins was shown to be equal approximately to 6:1:2 in loach embryos and to 8:4:3 in sea-urchin embryos independently of the duration of labelling. After incubation with [3H]amino acids the number of silver grains per unit section was on the average 2·4 times higher for nuclei than it was for cytoplasm at mid-blastula and mid-gastrula stages. At the mid-gastrula the vegeto-animal gradient of protein synthesis was found. A higher level of the synthesis of nuclear proteins as compared with that of cytoplasmic proteins appears to be related to an increase in the nuclear volume and the nucleo-cytoplasmic ratio during the early development of the loach and sea-urchin embryos.

Sublethal mechanisms of Pb and Zn toxicity to the purple sea urchin (Strongylocentrotus purpuratus) during early development

2014 ◽  
Vol 146 ◽  
pp. 220-229 ◽  
Author(s):  
Margaret S. Tellis ◽  
Mariana M. Lauer ◽  
Sunita Nadella ◽  
Adalto Bianchini ◽  
Chris M. Wood
Keyword(s):  
Early Development ◽  
Sea Urchin ◽  
Strongylocentrotus Purpuratus ◽  
Zn Toxicity ◽  
Purple Sea Urchin

Change in Na+, K+ -ATPase activity in embryos of the sea urchin, Hemicentrotus pulcherrimus, during early development

2020 ◽  
pp. 391-391
Author(s):  
K. Mitsunaga ◽  
M. Hatoh ◽  
K. Yamazaki ◽  
I. Yasumasu ◽  
K. Yamada ◽  
...  
Keyword(s):  
Atpase Activity ◽  
Early Development ◽  
Sea Urchin ◽  
Hemicentrotus Pulcherrimus
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