Ribosomal in Biological Technology

Molecular sleuths track evolution through the ribosome

... tree of life and suggests that differences in ribosomal structure between the three main branches of that ... looked at the three-dimensional structures of the ribosomal RNA and proteins and their proximity to each ... study, developed computer programs to analyze the ribosomal sequences of different organisms. Whenever he ...

Cylene Pharmaceuticals Initiates Phase II Clinical Trial of Quarfloxin (CX-3543) in Patients With Carcinoid/Neuroendocrine Tumors

... fluoroquinolone class of drugs. Rationally designed to selectively inhibit ribosomal RNA (rRNA) biogenesis in cancer cells, quarfloxin disrupts the interaction between the Nucleolin protein and a G-quadruplex DNA structure in the ribosomal DNA (rDNA) template, a critical interaction for rRNA biogenesis and one ...

Cylene Pharmaceuticals Appoints Kenna Anderes, Ph.D. as Vice President of Cancer Biology

... drugs to treat life-threatening cancers. Using its proprietary ribosomal RNA Biogenesis Inhibition Technology (RABIT(TM)) to design molecules that ... Cylene's most advanced cancer agent, quarfloxin (CX-3543), is a ribosomal RNA Biogenesis Inhibitor (RBI) in Phase II clinical development in ...

Celsis Introduces ReACT(TM) RNA-Based Microbial Detection Assays

... assay to obtain a fast, 2-hour result on samples that test positive for microbial contamination. Celsis ReACT assays use proprietary selections of ribosomal RNA sequences to confirm or to rule out the presence of Gram-negative organisms, Staph. aureus, yeast and mold, and can be customized for ...

AdvanDx's PNA FISH(TM) Test Shown to Reduce Mortality by 42% for Patients With Hospital-Acquired Enterococcus faecium Bloodstream Infections

... highly sensitive and specific fluorescence in situ hybridization (FISH) assay that uses PNA (peptide nucleic acid) probes to target species specific ribosomal RNA (rRNA) in live bacteria and yeast. The unique properties of the non-charged, peptide backbone of PNA probes enable the use of FISH assays in ...

Norgen Biotek Corp. Launches Four New Kits for the Purification of RNA and DNA from Plants and Fungi

... from a wide range of plant and filamentous fungal species. The Plant/Fungi RNA Purification Kit isolates all sizes of RNA, from large mRNA and ribosomal RNA down to microRNA. The purified RNA is of the highest integrity, and can be used in a number of downstream applications including Real-Time PCR, ...

Rib-X Pharmaceuticals to Present at Cambridge Healthtech Institute's 2nd Annual Challenge of Antibacterial Development Conference

... in San Diego, CA. Dr. Johnson's presentation, entitled "Using Structure-Based Discovery to Define Novel Macrolide Antibiotics Targeting the 50S ribosomal Subunit," will focus on Rib-X's ability to develop new antibiotic compounds using a drug discovery engine that combines a sophisticated, ...

PTC Therapeutics Announces Encouraging Additional Phase 2 Results of PTC124 in Cystic Fibrosis

... was generally well tolerated, achieved target plasma concentrations that have been associated with activity in preclinical models and did not induce ribosomal read through of normal stop codons. PTC is currently conducting Phase 2 clinical trials of PTC124 in nonsense-mutation-mediated cystic fibrosis (CF) ...

NASA study will help stop stowaways to Mars

... in FEMS Microbiology Ecology, a journal of the Federation of European Microbiological Societies, Venkateswarans team used a technology known as ribosomal RNA gene-sequence analysis to detect bacteria in clean rooms at Kennedy Space Center, Johnson Space Center, and the Jet Propulsion Laboratory. This ...

Analysis of Microarray Data

... not clearly discernible in the mRNA sample due to ribosomal contamination (27% in the mRNA used for this analysis). The presence of ribosomal RNA can increase background in mRNA samples, ... cDNA probe synthesis. Thus the presence of ribosomal RNA could have cumulatively skewed the ...

Evaluation of RNA isolated from human tissues: quality control for surgical and postmortem samples

... ethidium bromide or SYBR Green dye. In the past, the ratio between the ribosomal bands (28S:18S) was viewed as the primary indicator of RNA integrity, with ... the instrument provides information in addition to the ratio between the ribosomal bands (see Figure 1). These include: A) The total area under the ...

Laser Capture Microdissection (LCM) for the Analysis of Macrophage Gene Expression from Atherosclerotic Lesions

... to be of high quality (Fig. 2). Peaks corresponding to the 28S and 18S ribosomal RNAs were clearly visible on the BioAnalyzer profile (A) and ... typically contains multiple peaks that are as large as or larger than the ribosomal peaks. For the different gene transcripts measured, the quantitative ...

Quantitation of RNA for Hybridization Blots Using the VersaFluor Fluorometer

... (EM 520/10 filter). A standard curve was generated with E. coli ribosomal RNA (supplied with the kit), and the range was 1 to 50 ng/ml. 2 ... RNA concentration of samples. When E. coli ribosomal RNA was treated with DNase-free RNase 3 for 1 hour at 37 C, no ...

Translate More Protein with Higher Biological Activity

... the nascent 5' end of the mRNA becomes available for ribosomal binding, allowing transcription and translation to ... or eukaryotic) with the proper promoter and ribosomal binding sequences. This kit has been engineered to ...

SUPERIOR RNA FOR DEMANDING APPLICATIONS

... the RNA be purified of contaminants such as genomic DNA, ribosomal RNA (in mRNA preps), protein, ethanol, organic solvents, ... electropherogram shows intact mRNA that is free of residual ribosomal RNA. Tumor and Tumor/Normal Adjacent Tissue ...

Glossary for The BioPharm Guide to Fermentation and Cell Culture

... genes encoding particular proteins; regulatory genes controlling the expression of the other genes; and genes for transfer RNA or ribosomal RNA instead of proteins. genetic engineering Altering the genetic structure of an organism (adding foreign genes, ...

Total RNA Purification from Cultured Cells Using the ABI PRISM 6700 Automated Nucleic Acid Workstation and Total RNA Lysis Reagents

... RNA is purified from these two lysates and compared to RNA standards included in the kit in an ABI PRISM 7700 Sequence Detection System based RT+ 18S ribosomal RNA assay. Precision and Reproducibility of Recovery Coefficient of variation (%CV): Total experimental coefficient of ...

Monitoring Bacterial Genetic Diversity in a Freshwater Lake Using TTGE and DNA Sequence Analysis

... techniques that enable amplification and sequencing of DNA extracted directly from the environment. The ubiquitous prokaryotic 16S ribosomal RNA gene has been the most widely targeted molecule for these studies because regions of nucleotide sequence conservation allow ...

Analysis of Bacterial Assemblage Genetic Diversity in Environmental Samples Using the DCode System

... to classify microorganisms. Molecular techniques like the polymerase chain reaction (PCR)* have enhanced the ability to examine ribosomal genes of bacteria. Denaturing gradient gel electrophoresis (DGGE) has proven to be a powerful tool for analyzing PCR-amplified ...

Separation of 16S rRNA PCR Products From a Model Community Using Temporal Temperature Gradient Gel Electrophoresis, Rev A

... 3. Aghajani-Avaniss, E., Jones, K., Chapman, D., and Brunk, C., A molecular Technique for Identification of Bacteria Using Small Subunit ribosomal RNA Sequences, BioTechniques, 17 , 144149 (1994). 4. Leddy, M. B., Phipps, D. W., and Ridgway, H. F., Catabolite-Mediated ...

RNAPrep - Total RNA Isolation Purification

... by the Agilent 2100 bioanalyzer showed RNAPrep isolated RNA had consistently higher RIN scores (Figure 2) that asses 18/28S ribosomal peak highs and ratios along with several other parameters to provide an objective measure of RNA quality on a scale of 1 to 10 (for ...

RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater

... patients' samples yielded approximately 150 ng/scraping. The RNA, which resolved into "tight" 18S and 28S ribosomal RNA bands upon gel electrophoresis, was used to analyze IL-5 mRNA levels by RT-PCR. IL-5 mRNA levels were ...

Got Small RNA?

... (e.g. RNeasy Kit from Qiagen) usually results in loss of most of the small RNA fraction, including small ribosomal RNA (5S rRNA), transfer RNA (tRNA), microRNA (miRNA), or small interfering RNA (siRNA). Efficient ...

High Quality RNA Isolation Services

... after two extended time points (1 month and 7 months). Both the electropherogram profile of the RNA and ribosomal RNA (rRNA) ratios indicated minimal degradation suggesting that the RNA was free from RNase contamination. ...

miRNA Expression in White Blood Cells

... a 15% denaturing polyacrylamide gel. RNA yields ranged from about 20-40 g per 10 ml blood sample. No obvious degradation of the ribosomal RNA and tRNA bands was observed. Four representative samples are presented in Figure 2. Figure 2. Analysis ...

Determinants of RNA Integrity and Purity

... genomic DNA contamination. Genomic DNA that has been partially sheared can sometimes migrate between the 18S and 28S rRNA ribosomal bands (Panel B), making it difficult to accurately determine the rRNA ratio. Incomplete DNase I digestion can generate small ...

New Tools for Small RNA Analysis

... Non-coding small RNAs such as transfer RNAs (tRNA), ribosomal RNAs (rRNA), small nucleolar RNAs (snoRNA), and small nuclear RNAs (snRNA) play critical roles in a variety ...

Efficient Cellular Fractionation for RNA and Protein Isolation

... from the same number of cells (Figure 1). Analysis of ~5% of the RNA on a 1.2% denaturing agarose gel showed a reproducible pattern of ribosomal RNA bands. While most of the mature 18S and 28S rRNAs were present in the total and cytoplasmic fraction, the precursor rRNAs ...

Advancing the quality control methodology to assess isolated total RNA and generated fragmented cRNA

... Based upon the electropherograms, the acceptable quality of the samples is clearly determined, yet on the MOPS gel images a ribosomal band is missing from each. Just as the MOPS gel is capable of giving false negatives, it is also capable of giving false positives. Some ...

TransMessenger Transfection Reagent Handbook

... ReagentRNA complex. In addition, the presence of specific RNA characteristics, such as a cap, poly-A tail, or internal ribosomal entry site (IRES), may increase or decrease the efficiency of translation in a given cell type. Messenger RNA (mRNA) species in ...

HotStarTaq PCR Handbook

... 10 mM dNTP Primer A Primer B 5S ribosomal RNA (E. coli) HotStarTaq DNA Polymerase Distilled water Single cell ...

Using Gradient PCR to determine the optimum annealing temperature.

... annealing temperature: The calculated primer annealing temperature was 56.5C, the actual annealing temperature is 63.5C. The ribosomal spacer region of mycoplasms from H9 cell cultures was amplified. Using the gradient function of the universal block, a gradient of ...

Simple and Rapid Isolation of Plant RNA Using the Eppendorf Perfect RNA, Eukaryotic, Maxi Kit

... Kit. The distinct 18S and 28S rRNA bands demonstrate the excellent total RNA quality. Mitochondrial and chloroplast ribosomal RNA are also visible. Figure 2: ...

Fast Isolation of Total RNA from Small Numbers of Cells

... gels to check the integrity of the RNA. All of the samples are intact, according to this analysis, as observed by the distinct ribosomal RNA bands ( Figure 2 ). Fig.2 RT-PCR Analysis of RNA The high quality of total RNA isolated from 5 x 10 ...

Sequence-Validated and Expression-Tested Human cDNA in a Dual Expression Vector

... inflammatory response proteins, cellular matrix proteins, metabolic proteins, synthases, esterases, zinc-finger proteins, and ribosomal proteins. For further information regarding clone selection and availability, visit www.stratagene.com. Validated Nucleotide Sequence The ...

Simple Isolation of RNA from Tissue and Cultured Cells

... was electrophoresed on formaldehyde-agarose gels to assess the integrity of the RNA. Figure 2 shows intact 28S and 18S ribosomal RNA bands for each sample. Fig.2 Table 3 Isolation of RNA from Various Mouse Tissues RNA was ...

Improved Sensitivity for Staining RNA with SYBR Gold Stain

... run on two identical gels and stained with either SYBR Gold or ethidium bromide. When total RNA was stained with SYBR Gold, the ribosomal RNA bands were clearly visible when as little as 10 ng of total RNA was run on the gel, and the Eagle Eye II image integrated ...

Functional Cloning Using ViraPort Retroviral cDNA Expression Libraries

... raf-1 oncogene Onco-11 0.5 Human ribosomal protein L8 1.6 Unknown (pac clone; chromosome 11) ...

A New PCR-based Mycoplasma Detection Method

... for mycoplasma detection. 2 While other companies have since introduced PCR-based methods, these competing technologies call for amplifying ribosomal RNA subunits or the spacer regions between them. 3 Inasmuch as these targets share a large degree of sequence homology, both within the ...