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Blank notes - local.brookings.k12.sd.us
Blank notes - local.brookings.k12.sd.us

... SEE PROCESSING VIDEO ...
RNA Seq: A (soon to be outdated) Tutorial
RNA Seq: A (soon to be outdated) Tutorial

... K (the actual number of balls) follows a Poisson distribution and hence K varies around the expected value (u) with a standard deviation of 1/ sqroot (u) Microarray data follows a Poisson distribution. However RNA seq does not. In RNA Seq genes with high mean counts (either because they’re long or h ...
HISTORY OF LIFE
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Cloning and sequencing of the S RNA from a Bulgarian isolate of
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... (Fig. 1), the larger one on the viral R N A strand and the smaller one on the complementary strand. The ORFs were separated by a non-coding region of 586 nucleotides. Computer analysis suggested that this region could form a highly stable secondary structure by internal base pairing of the thymidine ...
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Review of “Transposable elements have rewired the core regulatory

... * generally, conservation increases as window size increases (but not as much as effect of specific genes). ...
Regulators Discover Hidden Viral Gene in GMO Crops
Regulators Discover Hidden Viral Gene in GMO Crops

... Multicellular organisms make proteins by a mechanism in which only one protein is produced by each passage of a ribosome along a messenger RNA (mRNA). Once that protein is completed the ribosome dissociates from the mRNA. However, in a CaMV-infected plant cell, or as a transgene, Gene VI intervenes ...
CHAPTER 12 - powerpoint
CHAPTER 12 - powerpoint

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Transcription in Bacteria

... Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA by the enzyme, RNA polymerase. If the gene transcribed encodes a protein, the result of transcription is messenger RNA (mRNA), which then will be used to create that protein via the process of ...
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M-MuLV Reverse Transcriptase, RNase H minus

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chapter 12 test - open to see diagrams
chapter 12 test - open to see diagrams

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Degust: Visualize, explore and appreciate RNA

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The antibody validation experiments were essentially performed as
The antibody validation experiments were essentially performed as

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lec03-1
lec03-1

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Michigan State University Plant Genomics Program

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... nucleotides shown in green in Fig. 2D? SQ5: What fraction of genes do you think are preceded by promoters? What fraction are preceded by CRP-binding sites? C. Regulation of cyanobacterial genes by environmental nitrogen The cyanobacterium Nostoc needs multiple layers of regulation to govern the expr ...
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Inquiry into Life Twelfth Edition
Inquiry into Life Twelfth Edition

... • Subunit IIa is the primary product in yeast – Can be converted to IIb by proteolytic removal of the carboxyl-terminal domain (CTD) which is 7-peptide repeated over and over – Converts to IIo by phosphorylating 2 ser in the repeating heptad of the CTD – Enzyme with IIa binds to the promoter – Enzym ...
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... assemblies of molecular functions. Examples of broad biological process terms are cell growth and maintenance or signal transduction. Examples of more specific terms are pyrimidine metabolism or alpha-glucoside transport. It can be difficult to distinguish between a biological process and a molecula ...
Transcription. (Ms. Shivani Bhagwat)
Transcription. (Ms. Shivani Bhagwat)

... information of RNA is translated into proteins Transcription (RNS synthesis) is carried out by RNA polymerases RNA polymerases are large complexes of proteins, not single enzymes Transcription is more complex in eukaryotes than in prokaryotes, but basic mechanisms are very similar in all living cell ...
Naming `junk`: Human non-protein coding RNA (ncRNA) gene
Naming `junk`: Human non-protein coding RNA (ncRNA) gene

... subunit. The 18S, 5.8S and 28S rRNA genes are arranged in tandem repeats, with the genes separated by transcribed spacers known as externally and internally transcribed sequences (abbreviated to ETS and ITS). Each repeat found in the arrangement 50 ETS-18S-ITS1-5.8S-ITS2-28S-30 ETS produces one prec ...
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RNA interference



RNA interference (RNAi) is a biological process in which RNA molecules inhibit gene expression, typically by causing the destruction of specific mRNA molecules. Historically, it was known by other names, including co-suppression, post-transcriptional gene silencing (PTGS), and quelling. Only after these apparently unrelated processes were fully understood did it become clear that they all described the RNAi phenomenon. Andrew Fire and Craig C. Mello shared the 2006 Nobel Prize in Physiology or Medicine for their work on RNA interference in the nematode worm Caenorhabditis elegans, which they published in 1998.Two types of small ribonucleic acid (RNA) molecules – microRNA (miRNA) and small interfering RNA (siRNA) – are central to RNA interference. RNAs are the direct products of genes, and these small RNAs can bind to other specific messenger RNA (mRNA) molecules and either increase or decrease their activity, for example by preventing an mRNA from producing a protein. RNA interference has an important role in defending cells against parasitic nucleotide sequences – viruses and transposons. It also influences development.The RNAi pathway is found in many eukaryotes, including animals, and is initiated by the enzyme Dicer, which cleaves long double-stranded RNA (dsRNA) molecules into short double-stranded fragments of ~20 nucleotide siRNAs. Each siRNA is unwound into two single-stranded RNAs (ssRNAs), the passenger strand and the guide strand. The passenger strand is degraded and the guide strand is incorporated into the RNA-induced silencing complex (RISC). The most well-studied outcome is post-transcriptional gene silencing, which occurs when the guide strand pairs with a complementary sequence in a messenger RNA molecule and induces cleavage by Argonaute, the catalytic component of the RISC complex. In some organisms, this process spreads systemically, despite the initially limited molar concentrations of siRNA.RNAi is a valuable research tool, both in cell culture and in living organisms, because synthetic dsRNA introduced into cells can selectively and robustly induce suppression of specific genes of interest. RNAi may be used for large-scale screens that systematically shut down each gene in the cell, which can help to identify the components necessary for a particular cellular process or an event such as cell division. The pathway is also used as a practical tool in biotechnology, medicine and insecticides.
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