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Metabolic Managers
Metabolic Managers

...  Form different words ...
PDF
PDF

... An in vitro cleavage assay for genotype determination The Guide­it Genotype Confirmation Kit uses a Cas9/sgRNA­mediated in vitro cleavage assay for genotype determination. PCR amplicons containing the potentially edited genomic locus are used in a cleavage reaction set up with the same sgRNA as was  ...
chapter 1 introduction
chapter 1 introduction

... mapping (Botstein et al., 1980), and later adopted for plant genomes (Helentjaris et al., 1986; Weber and Helentjaris, 1989). The technique is based on restriction enzymes that reveal a pattern difference between DNA fragment sizes in individual organisms. Although two individuals of the same specie ...
Recovery and analysis of old/ancient DNA: molecular archaeology
Recovery and analysis of old/ancient DNA: molecular archaeology

... sequences” (25 bp imperfect direct repeats) involved in the transfer process: the right-hand border sequence is sufficient for transfer ...
Mismatch repair
Mismatch repair

... nick, removing a portion of the damaged strand (with its 5’3’ exonuclease activity) and replacing it with undamaged DNA. (d) The nick remaining after DNA polymerase I has dissociated is sealed by DNA ligase. ...
Glimpses of a few literatures on snRNA
Glimpses of a few literatures on snRNA

... Higher eukaryotes can mount antiviral immune responses induced by dsRNA. This process, called RNA interference, is sequence specific and can therefore be used to target gene expression. Nature Immunology 3, 597 - 599 (2002) doi:10.1038/ni0702-597 ...
Prenatal Exposure of Mice to the Human Liver Carcinogen Aflatoxin
Prenatal Exposure of Mice to the Human Liver Carcinogen Aflatoxin

Nucleic Acids Research
Nucleic Acids Research

... K.lactis ABK802 was grown in 1 litre of YPD broth to a density of 3x107 cells .1-1, cells were pelleted and washed once in water, then resuspended in 50 ml of SED buffer (1.2 M Sorbitol, 20 nM EDTA, 50 nM Dithiothreitol) and incubated at 37'C for 20 sins. To the suspension was added 1 m1 of 10 mg m- ...
100 Base Pair DNA Ladder
100 Base Pair DNA Ladder

... dye and 400 ul TE buffer). Vortex, mix well. Use 5 - 10 u1 of working solution per loading. The working solution may be stored at 4℃ for a few weeks. For long term storage, store at -20℃. Thaw the working solution at 37℃ completely and vortex gently before use. ( 2 ) For best resolution of 100 bp to ...
CHS Honors Bio Final Exam Review Packet 2013
CHS Honors Bio Final Exam Review Packet 2013

... 4. Distinguish natural selection from artificial selection. Give an example of each. 5. According to Darwin, why are some organisms “better fit” to survive than others? 6. What was Darwin’s definition of “fitness”? 7. Define and distinguish the following: analogous structures, homologous structures, ...
Nov14_05
Nov14_05

... Response of a quantitative trait to selection depends on: 1. the relationship between fitness and phenotype 2. the phenotypic variance 3. the degree to which the trait is heritable ...
R = h 2 S generation h 2 (low line)
R = h 2 S generation h 2 (low line)

... The response to selection is proportional to the amount of genetic variation in the character. ...
Understanding Our Environment - McGraw Hill Higher Education
Understanding Our Environment - McGraw Hill Higher Education

... bind specific regulatory proteins to help RNA polymerase attach to its binding site.  Positioning at a distance permits a large number of different regulatory sequences to influence that particular gene. Johnson - The Living World: 3rd Ed. - All Rights Reserved - McGraw Hill Companies ...
Freeman 1e: How we got there
Freeman 1e: How we got there

... dictate the usefulness of a protein as a catalyst (enzyme) or its structural integrity in the cell. Destruction of the folded structure by chemicals or environmental conditions is called denaturation (Figure 3.19). ...
We present here a collection of DNA sequence
We present here a collection of DNA sequence

... line with a positive slope, direct repeats are denoted by two diagonal lines with the same slope as the main line. Deletions and insertions can be detected by a jagged line, and inverted repeats are shown (using a window of one nucleotide) by diagonal lines with negative slopes. The user can also us ...
BIOCHEMISTRY WEBQUEST
BIOCHEMISTRY WEBQUEST

... http://www2.nl.edu/jste/proteins.htm 1) Proteins are polymers of linked monomers called ___________ ___________. 1pt 2) Click on the “play” button (yellow box) to link the 2 amino acids in the diagram. (a) What kind of a bond is formed? 1 pt (b) What kind of chemical reaction creates this bond? 1 pt ...
Chapter 17
Chapter 17

... the protein is longer and the mRNA is shorter than expected ...
DNA Markersfor Resistanceto Fungal Diseases in
DNA Markersfor Resistanceto Fungal Diseases in

... against fungal diseases has been to select for disease-resistant plant varieties. For example, the use of varieties that possess one or more genes for tolerance towards VentciUium wilt has dramatically reduced the impact of this disease in Australian cotton crops. ...
MCB 135K: Discussion
MCB 135K: Discussion

... Fitness = reproductive success Individuals with the best reproductive success have more offspring. And so on, and so on, until the adaptation (gene) that led to greater reproductive success is present throughout the species. ...
available here - WordPress.com
available here - WordPress.com

... sequence differences must be sufficient to reliably discriminate species, i.e., show more DNA variation between species than within species. The barcoding regions must also be technically easy to sequence, so they can be reliably sequenced from all species of interest, using standard DNA sequencing ...
Foundations of Biology
Foundations of Biology

... Some of the general methods used to control expression in prokaryotes are used in eukaryotes, but nothing resembling operons is known Eukaryotic genes are controlled individually and each gene has specific control sequences preceding the transcription start site In addition to controlling transcript ...
Transcription Initiation
Transcription Initiation

... Some of the general methods used to control expression in prokaryotes are used in eukaryotes, but nothing resembling operons is known Eukaryotic genes are controlled individually and each gene has specific control sequences preceding the transcription start site In addition to controlling transcript ...
Bioinformatic analysis of diverse protein superfamilies to
Bioinformatic analysis of diverse protein superfamilies to

... alignment can define general properties of the entire superfamily (for example, have direct roles in enzyme catalytic machinery) but do not explain functional diversity. Another mutation pattern can be described as subfamily-dependent conservation – conserved within functional subfamilies but differ ...
Molecular
Molecular

... During last week’s lab you exposed his- mutant strains of S. typhimurium to suspected mutagens. Some of your his- bacteria reverted to a his+ phenotype, but how do you suppose this happened? As you remember, different mutagens affect DNA in different ways. However, even though a specific mutagen wil ...
Transcription | Principles of Biology from Nature Education
Transcription | Principles of Biology from Nature Education

... "downstream." Unlike DNA polymerase, RNA polymerase does not need a primer to start transcription. The stretch of DNA that is transcribed into RNA is known as the transcription unit. Transcription has three distinct phases: initiation, elongation and termination. During initiation, with the help of ...
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Deoxyribozyme



Deoxyribozymes, also called DNA enzymes, DNAzymes, or catalytic DNA, are DNA oligonucleotides that are capable of catalyzing specific chemical reactions, similar to the action of other biological enzymes, such as proteins or ribozymes (enzymes composed of RNA).However, in contrast to the abundance of protein enzymes in biological systems and the discovery of biological ribozymes in the 1980s,there are no known naturally occurring deoxyribozymes.Deoxyribozymes should not be confused with DNA aptamers which are oligonucleotides that selectively bind a target ligand, but do not catalyze a subsequent chemical reaction.With the exception of ribozymes, nucleic acid molecules within cells primarily serve as storage of genetic information due to its ability to form complementary base pairs, which allows for high-fidelity copying and transfer of genetic information. In contrast, nucleic acid molecules are more limited in their catalytic ability, in comparison to protein enzymes, to just three types of interactions: hydrogen bonding, pi stacking, and metal-ion coordination. This is due to the limited number of functional groups of the nucleic acid monomers: while proteins are built from up to twenty different amino acids with various functional groups, nucleic acids are built from just four chemically similar nucleobases. In addition, DNA lacks the 2'-hydroxyl group found in RNA which limits the catalytic competency of deoxyribozymes even in comparison to ribozymes.In addition to the inherent inferiority of DNA catalytic activity, the apparent lack of naturally occurring deoxyribozymes may also be due to the primarily double-stranded conformation of DNA in biological systems which would limit its physical flexibility and ability to form tertiary structures, and so would drastically limit the ability of double-stranded DNA to act as a catalyst; though there are a few known instances of biological single-stranded DNA such as multicopy single-stranded DNA (msDNA), certain viral genomes, and the replication fork formed during DNA replication. Further structural differences between DNA and RNA may also play a role in the lack of biological deoxyribozymes, such as the additional methyl group of the DNA base thymidine compared to the RNA base uracil or the tendency of DNA to adopt the B-form helix while RNA tends to adopt the A-form helix. However, it has also been shown that DNA can form structures that RNA cannot, which suggests that, though there are differences in structures that each can form, neither is inherently more or less catalytic due to their possible structural motifs.
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