Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Echinobase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
Echinobase
ECB-ART-30303
Experientia 1979 Sep 15;359:1161-3. doi: 10.1007/bf01963262.
Show Gene links Show Anatomy links

Denaturation map of the ribosomal DNA of Lytechinus variegatus sperm.

Mishra NK .


???displayArticle.abstract???
Electron microscopy of the partially heat denatured ribosomal DNA (rDNA) from sea urchin (Lytechinus variegatus) sperm has demonstrated that it consists of repeating units of 3.6 +/- 0.2 micron, corresponding to a mol.wt of 7.2 +/- 0.4 x 10(6). Based on differential denaturability, each repeat unit is divided into 2 regions. The larger region of 2.47 +/- 0.11 micron (mol.wt 4.9 +/- 0.22 x 10(6)) corresponds in length to the ribosomal precursor RNA of sea urchins and the smaller, GC-rich, subunit of 1.16 +/- 0.09 micrometer (mol.wt 2.3 +/- 0.18 x 10(6)) is presumed to contain non-transcribed spacer sequences.

???displayArticle.pubmedLink??? 488263
???displayArticle.link??? Experientia


Genes referenced: LOC100887844

References [+] :
Birnstiel, Localization of the ribosomal DNA complements in the nucleolar organizer region of Xenopus laevis. 1966, Pubmed