Results 101 to 110 of about 40,749 (233)

Chromomycin A3 banding and chromosomal mapping of 45S and 5S ribosomal RNA genes in bottle gourd

open access: yesCaryologia, 2021
Ribosomal DNAs and various banding patterns are landmarks in molecular cytogenetics providing useful information for karyotyping and addressing individual chromosomes.
Ahmet L. Tek   +3 more
doaj  

Magnification of Genes Coding for Ribosomal RNA in Saccharomyces cerevisiae [PDF]

open access: yes, 1977
When a strain of Saccharomyces cerevisiae monosomic for chromosome I and initially deficient for 25% of the genes coding for ribosomal RNA is repeatedly subcultured, the number of these genes increases to and remains stable at the number in the wild type.
Halvorson, Harlyn O., Kaback, David B.
core  

Molecular organization and phylogenetic analysis of 5S rDNA in crustaceans of the genus "Pollicipes" reveal birth-and-death evolution and strong purifying selection [PDF]

open access: yes, 2011
[Abstract] Background: The 5S ribosomal DNA (5S rDNA) is organized in tandem arrays with repeat units that consist of a transcribing region (5S) and a variable nontranscribed spacer (NTS), in higher eukaryotes.
Perina Cedrón, Alejandra   +4 more
core   +2 more sources

Patterns and regulation of ribosomal RNA transcription in Borrelia burgdorferi

open access: yesBMC Microbiology, 2011
Background Borrelia burgdorferi contains one 16S and two tandem sets of 23S-5S ribosomal (r) RNA genes whose patterns of transcription and regulation are unknown but are likely to be critical for survival and persistence in its hosts. Results RT-PCR of B.
Schwartz Ira   +3 more
doaj   +1 more source

Comparative pan-genome analysis of Piscirickettsia salmonis reveals genomic divergences within genogroups [PDF]

open access: yes, 2017
Indexación: Scopus.Piscirickettsia salmonis is the etiological agent of salmonid rickettsial septicemia, a disease that seriously affects the salmonid industry. Despite efforts to genomically characterize P.
Cárcamo, J.G.   +11 more
core   +2 more sources

Reduced ribosomal RNA expression and unchanged ribosomal DNA promoter methylation in oral squamous cell carcinoma

open access: yesMolecular Genetics & Genomic Medicine, 2019
Background Ribosomal RNA (rRNA) consists of four non‐coding RNAs, the 28S, 5.8S, 18S, and 5S rRNA. Abnormal expression of rRNA has been found in multiple tumors, and the methylation of rDNA promoter may affect rRNA expression as an epigenetic regulatory ...
Shanshan Ha   +4 more
doaj   +1 more source

Conservation and loss of ribosomal RNA gene sites in diploid and polyploid Fragaria (Rosaceae)

open access: yesBMC Plant Biology, 2011
Background The genus Fragaria comprises species at ploidy levels ranging from diploid (2n = 2x = 14) to decaploid (2n = 10x = 70). Fluorescence in situ hybridization with 5S and 25S rDNA probes was performed to gather cytogenetic information that ...
Liu Bo, Davis Thomas M
doaj   +1 more source

Identification of a novel splice variant form of the influenza A virus M2 ion channel with an antigenically distinct ectodomain [PDF]

open access: yes, 2012
Segment 7 of influenza A virus produces up to four mRNAs. Unspliced transcripts encode M1, spliced mRNA2 encodes the M2 ion channel, while protein products from spliced mRNAs 3 and 4 have not previously been identified.
Digard, Paul   +12 more
core   +4 more sources

A new RNA-RNA crosslinking reagent and its application to ribosomal 5S RNA

open access: yesNucleic Acids Research, 1978
The synthesis of a new RNA specific bifunctional crosslinking reagent, 1.4-phenyl-diglyoxal, is described which reacts exclusively with guanosines. The properties of the crosslinked products enabled us to develop a straightforward method for identifying the reacted nucleotides.
R, Wagner, R A, Garrett
openaire   +3 more sources

Microbial ecology of extreme environments: Antarctic dry valley yeasts and growth in substrate-limited habitats [PDF]

open access: yes
The success of the Antarctic Dry Valley yeasts presumeably results from adaptations to multiple stresses, to low temperatures and substrate-limitation as well as prolonged resting periods enforced by low water availability.
Vishniac, H. S.
core   +1 more source

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