ribosomal RNA

(redirected from 16S rDNA)
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RNA

 
messenger RNA (mRNA) see ribonucleic acid.
ribosomal RNA (rRNA) see ribonucleic acid.
transfer RNA (tRNA) see ribonucleic acid.

ri·bo·som·al RNA

the RNA of ribosomes and polyribosomes.

ribosomal RNA

n. Abbr. rRNA
The RNA that is a permanent structural part of a ribosome.

ribosomal RNA (rRNA)

[rī′bōsō′məl]
the ribonucleic acid of ribosomes and polyribosomes.

ribosomal RNA

Molecular biology Any of a family of single-stranded nucleic acids ranging from 100 to 3000 bases in length, that assemble in heteromultimeric complexes with proteins, to form ribosomes, the 'docking stations' for mRNA and nascent polypeptide strands. See Ribosome, RNA. Cf mRNA, tRNA.

ribosomal RNA (rRNA)

Ribonucleic acid that is a permanent structural feature of RIBOSOMES.

ribosomal RNA (rRNA)

a form of RNA transcribed from DNA in the NUCLEOLI of EUKARYOTE cells or clustered ribosomal genes in PROKARYOTES, that complexes with various proteins (r proteins) to form the RIBOSOME. rRNA constitutes the major proportion of RNA in cells and occurs in a number of different types (for example, in bacterial ribosomes: 23S rRNA, 16S rRNA and 5S rRNA). In protein synthesis a sequence near the 3′-end of the 16S rRNA interacts with the SHINE-DALGARNO sequence to initiate TRANSLATION. Certain regions of rRNA have been highly conserved during evolution and comparative sequencing studies of rRNAs are used to determine evolutionary relationships between organisms and to construct PHYLOGENETIC TREES.

ribosomal RNA (rī´bōsō´məl),

n a type of protein-containing ribonucleic acid produced by the nucleolus and found connected to the endoplasmic reticulum or moving freely within the cytoplasm.
References in periodicals archive ?
16S rDNA sequencing: Sequencing of 16S rDNA of selected strains of each species of Lactobacillus was carried out at the National JALMA Institute for Leprosy and other Mycobacterial Diseases, Agra.
The DNA samples (obtained using the 16s rDNA V3 primer) were sent to Germany (MGW-Biotech, Germany) for nucleotide sequencing.
Phylogenetic compositions of bacterioplankton from two California estuaries compared by denaturing gradient gel electrophoresis of 16S rDNA fragments.
Whereas 16S rDNA sequences are highly conserved, the genome of some bacterial species harbors multiple copies of the ribosomal operon.
pneumoniae was obtained by 16S rDNA PCR alone in 17 of the 40 cases (43%), all of whom had received antibiotics prior to pleural fluid aspiration.
Given that microbial identification of such environmental isolates is problematic with rapid-identification techniques based on biochemical gallery strips--mainly because of a lack of biochemical profiles of these organisms--it was decided that all identifications should be performed with broad-range or universal 16S rDNA, as previously done in the identification of environmental organisms (Moore et al.
PM1 is a gram-negative rod and, based on 16S rDNA sequence similarity, is a member of the beta subgroup of Proteobacteria, in the family Comamonadaceae, and closely related to Aquabacterium, Rubrivivax, Leptothrix, Ideonella, and Hydrogenophaga (Bruns et al.
The infection of P acnes in the present case was evident by the botryomycotic granules and amplification of 16S rDNA by PCR.
PE Biosystems also introduced three products: the MicroSeq 500 16S rDNA Bacterial Sequencing Kit that provides higher sample throughput, faster results, and lower reagent costs; and two kits that make detection of food-borne E.
Dynacare also plans to investigate the use of the MALDI Biotyper to replace 16s rDNA sequencing for identification.
The sequencing of 16S rDNA of the strain SBF1 was done commercially by DNA Sequencing Service, Macrogen, Inc.
Traditional cultural method and the 16S rDNA analysis were used to identify the bacterial genus and the bacterial quantities.