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100 words to know before starting AP Biology
100 words to know before starting AP Biology

... All students taking AP Biology need to start with some of the basic vocabulary used in the course. Your summer assignment is to know the following definitions as given below. You will be given the actual definition, characteristics, illustration or a paraphrased version of the definition and you sho ...
1.d Standard curve construction and validation of the C t
1.d Standard curve construction and validation of the C t

... during each cycle of the PCR. We used 25μl systems suggested by SYBR GreenER™ qPCR SuperMix Universal Manual (Invitrogen), which includes 2 μl (1nmol/μl) of Primer, 2 μl of sample, 12.52 μl SYBR mix and 8.52 μl water. The DNA was diluted to 0.2 ng/μl to stay within the linear range of the standard c ...
Recombinant DNA Technology
Recombinant DNA Technology

... • Gene expression is studied using RNA. However, RNA has two annoying properties: – it is very easily degraded. A desirable property in the cell: allows rapid response to environmental changes – It usually has a lot of secondary structure. This means that migration speed in electrophoresis is not pr ...
bioCHEMISTRY 480 Molecular Biochemistry-‐
bioCHEMISTRY 480 Molecular Biochemistry-‐

... Homepage:    http://sites.ewu.edu/jcorkill/   The  subsections  of  this  page  are:  (1)  480  Ramachandran’s  Blog    (2)  Introduction  &   curriculum,  ,  Voet’s  web  site  (2)  Review  of  course,  lectures  notes,  overall  biochemistr ...
Unit 7: Heredity and Biotechnology
Unit 7: Heredity and Biotechnology

... C. Steps of Genetic Engineering 1. Scientists identify the gene (_____________________________________________________________________) that they want to transfer. They then collect a sample of the DNA containing that gene. DNA extraction is the removal of DNA from cells by lysing the membrane and ...
Searching for Genes
Searching for Genes

... What you just did in Table 3 is referred to as “reverse transcription.” This is actually what some RNA viruses do when they infect cells. They reverse-transcribe their RNA and incorporate it into the DNA of the host cell. This process is also used by molecular biologists (biologists whose studies in ...
Recombinant DNA Techniques Laboratory Bi 431/531
Recombinant DNA Techniques Laboratory Bi 431/531

... • Present in many deep sea organisms and in the open ocean • Most belong to genus Photobacterium, some to Vibrio • The lux operon – 5 genes, about 8 kb – Three genes remove Acyl ACP from fatty acid biosynthesis pathway – Two genes code for the α and ß subunits of luciferase ...
And can we predict these positions by analysing
And can we predict these positions by analysing

... dinucleotides that favor DNA bending or flexibility where observed and helps in determining nucleosome position. • May help explain how a transcription factor picks out relevant binding sites. • Approach still has many limitations, new models should account for favorable nucleosome-nucleosome intera ...
Recombinant DNA Technology
Recombinant DNA Technology

... • Gene expression is studied using RNA. However, RNA has two annoying properties: – it is very easily degraded. A desirable property in the cell: allows rapid response to environmental changes – It usually has a lot of secondary structure. This means that migration speed in electrophoresis is not pr ...
Macromolecule worksheet answer Key
Macromolecule worksheet answer Key

... protein needed by a living thing. RNA copies and transfers this genetic information so that proteins can be made. The monomers that make up nucleic acids are called nucleotides. Nucleotides are made of a phosphate group attached to a pentose (5 carbon) sugar and a nitrogenous (contains lots of Nitro ...
Exporter la page en pdf
Exporter la page en pdf

... Summary The SANT domain is a nucleosome recognition module found in transcriptional regulatory proteins, including chromatin-modifying enzymes. It shows high functional degeneracy between species, varying in sequence and copy number. Here, we investigate functions in vivo associated with two SANT mo ...
EMS-treated culture
EMS-treated culture

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as a PDF

... DNA information into proteins, they could not yet read any natural DNA sequences--not even the sequence of a single gene out of the thousands present within a cell. They lacked the text on which to practice their newfound deciphering skills. It took another 15 years for this problem to be fully solv ...
bioCHEMISTRY 480 Molecular Biochemistry-‐
bioCHEMISTRY 480 Molecular Biochemistry-‐

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Presentation - people.vcu.edu
Presentation - people.vcu.edu

... Weng, Y.-I., Huang, T. H.-M., & Yan, P. S. (2009). Methylated DNA Immunoprecipitation and Microarray-Based Analysis: Detection of DNA Methylation in Breast Cancer Cell Lines. Methods in Molecular Biology (Clifton, N.J.), 590, 165–176. ...
Cat Coat Color Genetics Part 1
Cat Coat Color Genetics Part 1

... One, a totally white cat can be an albino. An albino occurs when a cat inherits two copies of the major albino gene (cc) resulting in a total lack of pigmentation in both hair and eyes. In these cats their hair is totally white and they have pink eyes. There is another rare variety of albino that ...
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Biological Diversity Section 3 Student Notes

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Biology 105 Midterm 1 v. 1 Feb. 13, 2007
Biology 105 Midterm 1 v. 1 Feb. 13, 2007

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DNA and RNA

... the cells in our bodies can manufacture amino acids from other, more basic compounds (or, as the case may be, from other amino acids). Second, proteins and enzymes within a cell are constantly being broken down into amino acids. Finally, we can obtain amino acids from diet. When we eat a juicy steak ...
“Ancient” Viruses
“Ancient” Viruses

... protein-primed process that occurs in the nucleus: 1. A preterminal protein (pTP)/DNA polymerase (Pol) complex binds to the 3’ origin of replication using both E2 proteins. 2 dCTP is recruited to form a phosphodiester bond with the pTP serine. 3. Continuous 5’ to 3’ synthesis of DNA by viral polymer ...
Promoters
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Next generation sequencing
Next generation sequencing

Teacher PowerPoint - UNC Institute for the Environment
Teacher PowerPoint - UNC Institute for the Environment

Companion PowerPoint slide
Companion PowerPoint slide

... Refers to changes in gene expression caused by mechanisms other than changes in the underlying DNA sequence. Enables a cell/organism to respond to its dynamic external environment during development and throughout life! Epigenetic changes to the genome can be inherited if these changes occur in cell ...
Modelling_evolution - the Department of Statistics
Modelling_evolution - the Department of Statistics

... This kind of approach cannot (at least in a straightforward way) deal with context-dependent substitution rates or insertions and deletions – For example, there is a greatly elevated rate of mutation at CpG sites in ...
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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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