Results 221 to 230 of about 24,140 (251)

A 12 S precursor to 5.8 S rRNA associated with rat liver nucleolar 28 S rRNA

Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression, 1983
The pre-rRNA and rRNA components of rat and mouse liver nucleolar RNA were analysed. It was shown that upon denaturation, part of the 32 S pre-rRNA is converted into 28 S rRNA and 12 S RNA. The 12 S RNA from mouse (Mr, 0.36 X 10(6)) is larger than the one from rat (Mr, 0.32 X 10(6). The 12 S RNA chain is intact and resists denaturation treatment.
K P, Dudov, K V, Hadjiolova, M B, Kermekchiev, B S, Stanchev, A A, Hadjiolov   +4 more
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The Expansion Segments of Human 28S rRNA Match MicroRNAs Much Above 18S rRNA or Core Segments

MicroRNA, 2018
The size of eukaryotic 25-28S rRNAs shows a progressive phylogenetically linked increase which is pronounced in mammals, and especially in hominids. The increase is confined to specific expansion segments, inserted at points that are highly conserved from yeast to man.
Michael S, Parker, Ambikaipakan, Balasubramaniam, Steven L, Parker   +2 more
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Localization of the 18S, 5.8S and 28S rRNA genes and the 5S rRNA genes in the babirusa and the white-lipped peccary

Cytogenetics and Cell Genetics, 2008
The locations of the genes encoding 18S, 5.8S and 28S rRNA and 5S rRNA were studied in two relatives of the domestic pig, the babirusa (Babyrousa babyrussa) and the white-lipped peccary (Tayassu pecari). In the babirusa, the 18S, 5.8S and 28S rDNA is located on chromosomes 6, 8 and 10.
Zijlstra, C., Mellink, C. H.M., De Haan, N. A., Bosma, A. A.   +3 more
openaire   +4 more sources

What Causes the Aphid 28S rRNA to Lack the Hidden Break?

Journal of Molecular Evolution, 1990
In order to determine why the aphid 28S rRNA lacks the hidden break otherwise found in insects, the structure of the region of the aphid ribosomal DNA (rDNA) corresponding to the gap region, which in other insect rDNA transcripts is excised posttranscriptionally, was studied.
Hajime Ishikawa, Haruhiko Fujiwara, Hiroko Eda-Fujiwara   +2 more
exaly   +3 more sources

New Clades of Euthyneuran Gastropods (Mollusca) from 28S rRNA Sequences

Molecular Phylogenetics and Evolution, 2001
Recent morphological and molecular results on phylogeny of euthyneuran gastropods, which include opisthobranchs and pulmonates, have greatly diminished previous supposed resolution of their phylogenetic relationships. In addition to recent morphological results, sequences of the D1 and D2 domains of the 28S rRNA are here analyzed by parsimony for 31 ...
B, Dayrat, A, Tillier, G, Lecointre, S, Tillier   +3 more
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Site-Specific Cleavage of 28S rRNA as a Marker of Traumatic Brain Injury

Journal of Neurotrauma, 1999
A cleavage product of 28S rRNA was isolated from ipsilateral hippocampus of rat brain subjected to lateral fluid percussion induced traumatic brain injury (TBI). Northern blot analysis demonstrated that the corresponding cDNA fragment hybridized to 28S rRNA and three cleavage products.
L, Fan, A G, Yakovlev, A I, Faden
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Phylogenetic analysis based on 28S rRNA of Babesia spp. in ruminants in China

Experimental and Applied Acarology, 2012
Molecular phylogenetic analyses are mainly based on the small ribosomal RNA subunit (18S rRNA), internal transcribed spacer regions, and other molecular markers. We compared the phylogenetic relationships of Babesia spp. using large subunit ribosomal RNA, i.e., 28S rRNA, and the united 28S + 18S rRNA sequence fragments from 11 isolates of Babesia spp ...
Huitian, Gou, Guiquan, Guan, Miling, Ma, Aihong, Liu, Zhijie, Liu, Qiaoyun, Ren, Youquan, Li, Jifei, Yang, Ze, Chen, Hong, Yin, Jianxun, Luo   +10 more
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Sequence analysis of partial regions of the 5.8S rRNA internal transcribed region 2 and 28S rRNA of Isospora belli

British Journal of Biomedical Science, 2003
(2003). Sequence analysis of partial regions of the 5.8S rRNA internal transcribed region 2 and 28S rRNA of Isospora belli. British Journal of Biomedical Science: Vol. 60, No. 2, pp. 115-116.
B Cherie, Millar, Colm J, Lowery, Jiru, Xu, James S G, Dooley, John E, Moore   +4 more
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Distribution of rDNA and 28S, 18S, and 5S rRNA in micronuclei containing a single chromosome

Biochemistry and Cell Biology, 1990
Investigating genes and their transcription products in nuclear compartments corresponding to one mammalian chromosome, the ribosomal genes 18S–28S and 5S were localized in PtK1 micronucleated cells and rRNA was characterized in sorted micronuclei containing single identified chromosomes.
B, Labidi, F, Broders, J L, Meyer, D, Hernandez-Verdun   +3 more
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Competition between R1 and R2 transposable elements in the 28S rRNA genes of insects

Cytogenetic and Genome Research, 2005
R1 and R2 are non-LTR retrotransposons that insert in the 28S rRNA genes of arthropods. R1 elements insert into a site that is 74 bp downstream of the R2 insertion site, thus the presence of an R2 in the same 28S gene may inhibit the expression of R1. Consistent with such a suggestion, the R1 elements of <i>Drosophila melanogaster</i> have ...
J, Ye, C E, Pérez-González, D G, Eickbush, T H, Eickbush   +3 more
openaire   +2 more sources