Results 251 to 260 of about 497,148 (303)

Single-cell RNA-seq reveals trans-sialidase-like superfamily gene expression heterogeneity in <i>Trypanosoma cruzi</i> populations. [PDF]

Elife
Inchausti L, Bilbao L, Campo VA, Garat J, Sotelo-Silveira J, Rinaldi G, Howick VM, Duhagon MA, De Gaudenzi JG, Smircich P.   +9 more
europepmc   +1 more source

The mouse gastric surface epithelial cell and its response to early <i>Helicobacter pylori</i> infection. [PDF]

Virulence
Erhardsson M, Santos L, Benktander J, Sharba S, Thorell K, Lindén S.   +5 more
europepmc   +1 more source

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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
openaire   +4 more sources

Epigenetics of Ribosomal RNA Genes

Biochemistry (Moscow), 2022
This review is focused on biology of genes encoding ribosomal RNA (rRNA) in mammals. rRNA is a structural component of the most abundant cellular molecule, the ribosome. There are many copies of rRNA genes per genome that are under tight transcriptional control by epigenetic mechanisms serving to meet cellular needs in protein synthesis.
openaire   +2 more sources

Isolation of ribosomal gene chromatin

Developmental Biology, 1977
Abstract A procedure is described for isolating amplified nucleoli from immature oocytes of Xenopus laevis. Adult ovaries are dissociated by digestion with collagenase-papain and immature, pigment-free oocytes (Dumont stages II and III) are isolated by a series of 1g sedimentation steps followed by centrifugation through 1.7 M sucrose.
T, Higashinakagawa, H, Wahn, R H, Reeder
openaire   +2 more sources

Yeast Ribosomal Genes

1979
The aim of this paper is to consider the structure of ribosomal operon of baker’s yeasts Saccharomyces cerevisiae. Yeast as a primitive eukaryotic microorganism is a very convenient object for genetic and biochemical studies. One can grow it without difficulties and its genetics have been greatly promoted.
A. A. Bayev, K. G. Skryabin, V. M. Zaharyev, A. S. Krayev, P. M. Rubtsov   +4 more
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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
openaire   +2 more sources

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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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
openaire   +2 more sources