Results 281 to 290 of about 307,139 (315)

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
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Aspergillus nidulans 5S rRNA genes and pseudogenes

Current Genetics, 1986
The sequence of four Aspergillus nidulans 5S rRNA genes and of two pseudogenes has been determined. A conserved sequence about 100 bp upstream of the 5S rRNA coding sequences has been found in three genes and one pseudogene. The two pseudogenes correspond to the 5' half of the 5S rRNA coding sequence and their 3' flanking sequences which are not ...
E, Bartnik, S, Bartoszewski, P, Borsuk, J, Empel   +3 more
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Modulation of transcription of rRNA genes by rapamycin

International Journal of Immunopharmacology, 1994
Lymphosarcoma P1798 cells undergo growth arrest when exponentially growing cultures are exposed to 1 micrograms/ml of Rapamycin (Rapa). This growth arrest is accompanied by inhibition of RNA biosynthesis as measured by incorporation of 3H-uridine into the newly synthesized RNA. Approximately 50% inhibition of 3H-uridine incorporation was observed, upon
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Characterization of 5S rRNA genes from mouse

Gene, 1994
In order to characterize the transcriptional regulation of the 5S rRNA genes we have isolated a bona fide gene and a pseudogene from mouse cells. These 5S rRNA genes contain a 12-bp sequence designated as the D-box, located in position -33 to -22 bp, and two Sp1-binding sites in the 5'-flanking region.
Hallenberg, Charlotte, Nederby Nielsen, Jens, Frederiksen, Sune   +2 more
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Microheterogeneity in Aspergillus nidulans 5S rRNA genes

Current Genetics, 1987
We have determined the sequence of 4 Aspergillus nidulans 5S rRNA genes and compared it with 4 previously established sequences. No extensive homologies are found in 5' flanking sequences, but in the 3' flanks of two genes and two pseudogenes similar sequences are observed. In the coding sequences differences occur in 7 positions.
S, Bartoszewski, P, Borsuk, I, Kern, E, Bartnik   +3 more
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Organization of tRNA and rRNA genes in N. crassa mitochondria: Intervening sequence in the large rRNA gene and strand distribution of the RNA genes

Cell, 1979
Through analysis of cloned fragments of N. crassa mitochondrial DNA, we have derived a physical map for the region of the mitochondrial genome which encodes the ribosomal RNAs and most of the tRNAs. We have located RNA genes on this map by hybridization of purified 32P end-labeled RNA probes, and our findings are as follows.
J E, Heckman, U L, RajBhandary
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Amplification as a Rectification Mechanism for the Redundant rRNA Genes

Nature New Biology, 1972
IN eukaryotic cells multiple copies of ribosomal RNA (rRNA) genes are clustered in one or a few nucleolar organizers per haploid genome. These “redundant” or “reiterated” genes have all been shown to be, within the limits of available experimental techniques, identical within a given organism and species, producing homogeneous populations of rRNA ...
M, Buongiorno-Nardelli, F, Amaldi, P A, Lava-Sanchez   +2 more
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Structure of the rRNA Genes in the Hamster Sperm Nucleus

Journal of Andrology, 1995
ABSTRACT: We have examined the structure of the major ribo‐ somal RNA (rRNA) genes in the hamster sperm nucleus, using fluorescent in situ hybridization (FISH). The rRNA genes are present as tandemly repeated clusters located at the telomeric ends of the short arms of five pairs of acrocentric chromosomes in the Syrian golden hamster (as they are in ...
B, Nadel, J, De Lara, W S, Ward
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Structure and Expression of rRNA Genes

1991
The translation process within photosynthetic organelles of higher plants and algae is mediated by ribosomes of the 70S type first described by Lyttelton (1960), which are different from the cytoplasmic 80S and the mitochondrial 75S ribosomes. In view of the key function of 70S ribosomes for the expression of plastome encoded genes and because of the ...
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News from the nucleolus: rRNA gene expression

Trends in Biochemical Sciences, 1991
Although the typical, actively growing eukaryotic cell contains over 10,000 different transcripts, half of its RNA synthetic capacity is devoted to the production of a single kind of RNA. This is the pre-ribosomal RNA, which is synthesized in a special compartment of the nucleus, the nucleolus, and is the exclusive product of transcription by RNA ...
B, Sollner-Webb, E B, Mougey
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