Results 261 to 270 of about 492,027 (288)

Methylation of Mouse Ribosomal RNA Genes

DNA, 1982
Ribosomal DNA (rDNA) methylation was studied in various strains of mice. We used restriction enzymes that are sensitive to methylation and a cloned probe containing the transcribed spacer and part of the 18S and 28S gene. Strains C3H/He3, C57/B6-3, and AKR/J were found to have less than 9% of the rDNA methylated.
J G, Reilly, C A, Thomas, M J, Lundell
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RIBOSOMAL GENES IN ESCHERICHIA COLI

Annual Review of Genetics, 1986
INTRODUCTION . . . .. ... .. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . ......... . . . . . . . . . . . . .. . . . . . . . . . . . 297 GENE STRUCTURE 298 Ribosomal RNA Genes. . . . . . . . . . . . . . . . . . . . . . . .. . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L, Lindahl, J M, Zengel
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Ribosomal RNA Genes and Plant Development

Nature, 1972
The number of copies of the ribosomal RNA genes varies considerably between the different plant species studied. It does seem, however, that there is no gross amplification or deletion of these genes during the development of a particular plant.
J, Ingle, J, Sinclair
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Fine structure of active ribosomal genes

Chromosoma, 1976
The structure of active ribosomal genes in the newt Notophthalmus viridescens has been studied at the higher resolution permitted by negative staining. Spherical particles, 70 A to 100 A in diameter are seen on the non-transcribing "spacer" regions, but were absent from certain regions of the transcribing "matrix". The matrix core often appears thicker
C L, Woodcock, L L, Frado, C L, Hatch, L, Ricciardiello   +3 more
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Mutational Robustness of Ribosomal Protein Genes

Science, 2010
Keeping Fit Mutations may be deleterious, neutral, or advantageous. Understanding the relative effect of a new mutation on an organism's fitness is important for many systems from complex diseases to conservation biology. Lind et al.
Peter A, Lind, Otto G, Berg, Dan I, Andersson   +2 more
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Ribosomal RNA gene transcription in trypanosomes

Parasitology Research, 2014
Leishmania major, Trypanosoma cruzi and Trypanosoma brucei are pathogenic species from the order Kinetoplastida. The molecular and cellular studies of parasites, such as of the biosynthesis of essential macromolecules, are important in designing successful strategies for control.
Roberto, Hernández, Ana María, Cevallos   +1 more
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The Ribosomal Genes of Plasmodium

1986
Publisher Summary The chapter describes the Plasmodium rDNA unit. The chapter discusses briefly a feature of the rDNA units of other eukaryotic organisms and then compares and contrasts this with what has been found about the Plasmodium rDNA unit.
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Expression of Ribosomal Genes in Bacteria

1982
Publisher Summary This chapter discusses the molecular genetics of ribosomal proteins (r-proteins) and ribosomal ribonucleic acid (rRNA) in E. coli. Several molecular mechanisms for regulating r-protein and rRNA synthesis include autogenous regulation of r-protein operons by key regulatory r-proteins encoded by the operon, which they regulate ...
L, Lindahl, J M, Zengel
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Nuclear Ribosomal RNA Genes: ITS Region

2013
Despite possible drawbacks (intraspecific polymorphisms and possible fungal contamination), sequencing of the ribosomal RNA gene ITS region remains one of the most popular nuclear sequences used for plant taxonomy and phylogeny. A protocol for PCR amplification and sequencing of this region using universal plant primers is provided.
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On ribosomal gene compensation in Drosophila

Cell, 1980
Recent studies indicate that genes from only one nucleolus organizer undergo replication during polytenization of salivary gland cells of X/Y flies. This report presents evidence that this is also true X/X polytene cells. Interstrain hybrids were constructed which contain X chromosomes with different rDNA hybridization patterns following digestion with
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