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

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.
References in periodicals archive ?
Sequencing and analysis: Sequencing of the PCR product of 16S rDNA and blaNDM-1 genes of the representative samples was carried out commercially through Macrogen, South Korea.
An amplified fragment of 222bp from 16S rDNA, 424bp from XCF/XCR and 500bp from XACF/XACR was observed from all collected citrus cultivars.
Specific primers for 16S rDNA of full-length 1.6kb gene were used (Bukhari and Shakoori, 2010).
About 425 bp 16S rDNA fragments were purified using QIAquick PCR purification kit (QIAGEN, Valencia, CA, USA) according to the manufacturer's instructions and sequenced with the same primers using the sequencer (Gene analyzer 3121) by Macrogen co., Korea.
If identification was still incorrect following the proteic extraction protocol, we performed 16S rDNA sequencing systematically, as previously described (16), in 3 situations: when the identification score was <1.9 despite proteic extraction, when multiple different species were recognized with a correct identification score, and when a bacterium was isolated for the first time in the clinical microbiology laboratory.
Genetik analiz icin 16S+1 (5'-CTGCTCAATGATTTTTTAAATTGCTGTGG-3') ve 16S-1 (5'-CCGGTCTGAACTCAGATCAAGT-3') primerleri kullanilarak ixodid kenelerin 16S ribozomal DNA (16S rDNA) bolgesinin yaklasik 460 baz cifti (basepair = bp) uzunlugunda fragmentini amplifiye eden PZR protokolu uygulanmistir (14).
Out of 270 bacterial isolates obtained from banknotes, 61 were subjected to 16S rDNA amplification using universal primers.
Comparison of broad range 16S rDNA PCR and conventional blood culture for diagnosis of sepsis in the newborn: a case control study.
First, they selected a set of universal primers targeting a conserved region in the 16S rDNA of the bacterial genome.
Quantitative PCR was used to test for the presence of and to determine the amount of MeS 16S rDNA relative to total bacterial 16S rDNA present in DNA isolated from Mytilus edulis tissue samples.
The 16S rDNA sequences were aligned with 16S rRNA sequences from GenBank to identify organisms using BLAST analysis [9].