• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Synergies between assisted reproduction technologies and
Synergies between assisted reproduction technologies and

... the exogenous DNA into the host genome at multiple sites and in multiple copies. In some cases, this led to disruption of gene function, undesired ectopic expression that was difficult to control, and over- or under-expression of the inserted gene. Very recently methods for sitespecific genetic modi ...
STUDY GUIDE
STUDY GUIDE

... 6. Meat tenderizer contains an enzyme that interacts with meat. If meat is coated with tenderizer and then placed in a refrigerator for a short time, how would the enzyme be affected? (1) It would be broken down. (3) Its shape would change. (2) Its activity would slow down. (4) It would no longer ac ...
Final Exam from S06
Final Exam from S06

... Y chromosome in mammals and directs the formation of a testes in the developing embryo by controlling the activity of a number of different proteins. Embryos without this gene develop into females. This figure shows the SRY protein “in action” binding to a promoter region. a. Using the above informa ...
Midterm 1 Results…
Midterm 1 Results…

... - Variant forms of DNA sequence (polymoprhisms) can be used to map gene locations - Polymorphisms include single nucleotide polymorphisms and length polymorphisms - Alleles of polymorphic sites show Mendelian inheritance - Alleles of polymorphic sites can be detected using methods including DNA hybr ...
2008 BSHG newesletter 01
2008 BSHG newesletter 01

... If many different samples need to be analysed for the same region on a single run, then some means of identifying the sample derivation of each individual analysis needs to be employed. There are two main approaches available. Firstly, the sequencing array can be divided into sample specific regions ...
Globular Protein Structure
Globular Protein Structure

... The basic functional unit of protein tertiary structure is the domain. In its basic form, a domain is a structurally or functionally distinct parts of the protein. Small globular proteins (e.g., ribonuclease A) usually have only one domain whereas larger proteins (remember proteins can have molecula ...
Recombinant DNA Lesson - Ms. Guiotto Biology Class
Recombinant DNA Lesson - Ms. Guiotto Biology Class

... When the membranes dissolve, DNA and other cell contents go into the solution. A 10-minute heat treatment will form complexes with the detergent, fats, and proteins, causing them to settle out while the DNA stays in solution. Time is of the essence with this step. After 10 minutes at high temperatur ...
Important advances in next generation genome editing
Important advances in next generation genome editing

... final product is both safe and effective before it can be tested in HD patients. First, scientists need to figure out ways to get these drugs to the brain where the mutant huntingtin protein does most of its damage. This is difficult – our brains are especially good at keeping things out that might ...
RNA polymerase I
RNA polymerase I

... • The trp operon is an example of a repressible operon, one that is inhibited when a specific small molecule binds allosterically to a regulatory protein. • In contrast, an inducible operon is stimulated when a specific small molecule interacts with a regulatory protein. – In inducible operons, the ...
Nucleus and Chromosomes
Nucleus and Chromosomes

... To import about 106 histone/3 mins.(DNA-sythesizing cell) = 100 histone/ min/NPC Each NPC contains one or more open aqueous channels: 9 nm in diameter and 15 nm long The effective size of these channels has been determined by injecting various sizes of colloidal gold particles and examined by elec ...
answers
answers

... 10. What is the first step after you have collected cells from the scene? DNA Extraction, specifically addition of cell lysis or detergent. ...
Objective 2.1 Lesson D Recombinant Organisms
Objective 2.1 Lesson D Recombinant Organisms

video slide
video slide

... triplets are “stop” signals to end translation • The genetic code is redundant but not ambiguous; no codon specifies more than one amino acid • Codons must be read in the correct reading frame (correct groupings) in order for the specified polypeptide to be produced Copyright © 2008 Pearson Educatio ...
Targeted Genome Editing for Gene Containment in
Targeted Genome Editing for Gene Containment in

... Bacillus thuringiensis (Bt) was introduced into the black ash genome through Agrobacterium-mediated transformation using hypocotyl explants. Adventitious shoots were regenerated from transformed cells showing kanamycinresistance, and the presence of the Bt-gene was confirmed. Once roots are formed o ...
PostScript - Theoretical Biochemistry Group
PostScript - Theoretical Biochemistry Group

... complementary evolutionary compatibility differs greatly from the assumption that the redundancy of the genetic code is used for optimal folding of mRNAs, especially for thermodynamic stability, as suggested by Fitch. The latter regarded pairing of second and third codon positions (2-3 pairing) as o ...
Effect of Systemic Fungicide on Nucleic Acid, Amino Acid and
Effect of Systemic Fungicide on Nucleic Acid, Amino Acid and

... composition of soybean plants. Pak. J. Bot., 38(3): 721-733. [22] Sobti CS. 1993. Bioefficacy of Topsin-M 40% W.P. (Thoiphenate methyl) against fungal disease of vegetable. Annals of Plant Protec. Sci., 1: 1-7. [23] SPSS. 1994. SPSS 11.0 for windows update. SPSS, Chicago. USA. [24] Swain T and WE Hi ...
Chapter 4
Chapter 4

... molecules closer to the activation energy, and by making ∆G slightly more negative… until the enzyme "denatures" Coenzymes – like biotin in amino group transfer – bind reversibly but participate directly Metal ions – like magnesium in some ATPases. ...
ScrFl restriction/modification system from
ScrFl restriction/modification system from

... infection. Efforts to limit the potentially drastic consequences of phage infection have stimulated intensive tPresent address: Department of Food Science and Nutrition, University of Minnesota, S t Paul, MN 55108, USA. Abbreviations: ENase, restriction endonuclease; SmC, 5-methylcytosine; ...
Standards Molecular evidence (e.g., DNA, protein structures, etc
Standards Molecular evidence (e.g., DNA, protein structures, etc

... the anatomical evidence for evolution and provides additional detail about the sequence in which various lines of descent branched. ...
Chromosome “theory” of inheritance
Chromosome “theory” of inheritance

... between chromosomes, and – within each chromosome – their order are both invariant. In other words, if we examine chr. 1 (by the way, they are numbered according to size, eXcept for the X), then in every human being, that chromosome will contain the exact same genes (note – I did not say the exact s ...
4a - digbio
4a - digbio

... Goal of an optimal design: Minimize costs from money, time ...
Biology 1020 – Unit 2
Biology 1020 – Unit 2

... these large structures preform chemical reactions (enzymes), can carry other substances (hemoglobin) as well as can offer structure (keratin). Short polypeptides are used for many roles such as signalling (insulin). ...
BIO 362 – Introduction to Genetics
BIO 362 – Introduction to Genetics

... report the allegation to the instructor of record in the course. The instructor in a course is responsible for initiating action in each case of dishonesty or plagiarism that occurs in that class. The instructor may contact the Office of Student Conduct to discuss the nature of the violation and the ...
Immunosuppressive drugs: the first 50 years and a glance forward
Immunosuppressive drugs: the first 50 years and a glance forward

07 Myint
07 Myint

... Target amplification systems, which produce multiple copies of the target nucleic acid rather than the probe, such as self-sustained sequence replication (3SR) have been used to amplify viral genes5. Probe amplification techniques such as ligase chain reaction (LCR) and Qβ replicase have also been u ...
< 1 ... 342 343 344 345 346 347 348 349 350 ... 1026 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report