• 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
Introduction - Northern Illinois University
Introduction - Northern Illinois University

... • The 3-dimensional structure of each protein is unique. ...
Document
Document

...  Reverse transcriptase starts synthesis when a tRNA primer binds to a site 100-200 bases from the 5´ end.  When the enzyme reaches the end, the 5´-terminal bases of RNA are degraded, exposing the 3´ end of the DNA product.  The exposed 3´ end base pairs with the 3´ terminus of another RNA genome. ...
high order thinking skills (hots ).
high order thinking skills (hots ).

... Colourblindness gene is located on the X-chromosome-X-linked inheritance. Why do RNA viruses undergo mutation and evolution faster than most of the other viruses ? = Additional –OH group is a reactive group. Presence of U in place of T. Also RNA is single styranded and less stable. Why is it that tr ...
Biology_EOC_Review_best_version2011_2
Biology_EOC_Review_best_version2011_2

... sometimes phosphate groups, can also include the steroids 3) Proteins – composed of amino acids (20 different types) – do most of the work in organisms and are major structural components 4) Nucleic Acids – are composed of nucleotides – either DNA or RNA ...
Replication Study Guide
Replication Study Guide

... phosphate - the chemical anion PO4 3- , often used in biological systems polymer - a chemical with repeated structural units ...
Modern Taxonomy
Modern Taxonomy

... All of the classification methods discussed so far are based on physical similarities and differences. Even organisms with very different anatomies can share common traits. EX: All living things use ______________to pass on DNA and RNA information and control growth. http://sbchem.sunysb.edu/msl/dn ...
Mapping Mutations in the HIV RNA
Mapping Mutations in the HIV RNA

... The genetic material of the virus, which is RNA, is released and undergoes reverse transcription into DNA, which enters the host cell nucleus where it can be integrated into the genetic material of the cell. Activation of the host cells results in the transcription of viral DNA into messenger RNA (m ...
Mendelian Genetics
Mendelian Genetics

... – This causes a cascade of reactions between relay proteins in the cell’s interior. – The last relay molecule activates a transcription factor that causes the transcription of a specific gene in the DNA of the nucleus. – This leads to the production of a protein that may act as an enzyme or structur ...
Notes for lecture 17: RNA Secondary Structure Prediction Adam
Notes for lecture 17: RNA Secondary Structure Prediction Adam

Viruses & Prions
Viruses & Prions

... These pathogenic (disease causing) proteins can be obtained by eating tissue that contains it (like cow brains from an infected cow). It can also be passed down from mother to offspring animal ~ cow (inherited). This is possible because proteins are built from the instructions found in the organism' ...
11060_2014_1398_MOESM3_ESM
11060_2014_1398_MOESM3_ESM

... Exon 4 genome DNA isolated of each sample was submitted to PCR amplification for exon 4 of both IDH1 and IDH2 genes, using the Platinum DNA Polymerase (5,0U) (Invitrogen, Carlsbad, CA, USA) according to manufacturer’s instruction. Primers were designed with the assistance of Primer Express Software ...
24. DNA testing
24. DNA testing

... Recombination hotspot (12% between markers at either end of gene) a. DNA sequencing can be used to identify a mutation anywhere in gene due to completion of human genome project, it's becoming cheaper and easier for some mutations other methods might be preferred due to speed, cost, or need to have ...
Introduction to DNA Function and transcription
Introduction to DNA Function and transcription

... • How does the information stored in DNA determine which proteins can be made in a cell? • How is protein made in a cell? • How does the environment influence which proteins are made in cell? ...
lec-09-forensic-dna-analysis-chem-195h-2017
lec-09-forensic-dna-analysis-chem-195h-2017

... 5. Add DNA polymerase and all four types of nucleotides. The polymerase (enzyme used in DNA replication) will fill in the rest of the two strands. ...
APBioReview
APBioReview

... • Number, type, and sequence of amino acids ...
A1979HZ32700001
A1979HZ32700001

... elucidate the mechanism of the nuclear staining reaction. We were then able to publish the first cytochemical method for the direct visualization of histones (and related basic proteins), explain how it worked and provide some quantitative data, relating DNA to histone content of nuclei. "Since then ...
VeriScript™ Reverse Transcriptase
VeriScript™ Reverse Transcriptase

... Tested for contaminating endonucleases, exonucleases, and ribonucleases. Unit definition: One unit is the amount of enzyme activity that incorporates 1 nmole of dTTP into acid insoluble material in 10 minutes at 37°C using poly(rA)-oligo(dT)18 as template-primer. Functional test: Functionally tested ...
1.1 Biological Background
1.1 Biological Background

... a certain amino acid (see below). In eukaryotes, the mRNA is formed of coding and noncoding regions. Coding regions are the regions used to carry real genetic information. Non coding regions do not carry such information (see below). The coding regions are called exons, since they are able to leave ...
PPT File
PPT File

... • The DNA to be sequenced is mixed with a short oligonucleotide that serves as a primer for synthesis of the complementary strand • Gel electrophoresis is performed on each reaction mixture, and a band corresponding to each position of the chain termination appears • The sequence of the newly formed ...
Camp 1 - Evangel University
Camp 1 - Evangel University

... • The DNA to be sequenced is mixed with a short oligonucleotide that serves as a primer for synthesis of the complementary strand • Gel electrophoresis is performed on each reaction mixture, and a band corresponding to each position of the chain termination appears • The sequence of the newly formed ...
Special enzymes, called restriction enzymes, can cut DNA fragments
Special enzymes, called restriction enzymes, can cut DNA fragments

... Special enzymes, called restriction enzymes, can cut DNA fragments from almost any organism. Typically, restriction enzymes are used to cut DNA molecules into individual genes. There are many different restriction enzymes, each of which recognizes one specific nucleotide sequence. Many restriction e ...
Systematic Implications of DNA variation in subfamily
Systematic Implications of DNA variation in subfamily

... between taxa “spot botanists” – very phenetic Better separation and identification methods developed – used pathway stages as cladistic characters - phytochemistry Move away from secondary metabolites to proteins Early protein studies used immunological reactions Development of improved electrophore ...
translation
translation

...  TRANSLATION: In the ribosome, tRNAs match up with their codons in the mRNA.  The backsides of the tRNAs have specific amino acids attached to them. When the tRNAs line up, the amino acids bond to each other and let go of the tRNA.  The chain of amino acids is called a protein.  The protein then ...
Genetics - Mrs. Yu`s Science Classes
Genetics - Mrs. Yu`s Science Classes

...  Proofreading of a newly attached base to the growing replicate strand is carried out by DNA polymerase. DNA polymerase checks to make sure that each newly added nucleotide correctly base pairs with the template strand. If it does not, the nucleotide is removed and replaced with the correct ...
Fen-1 Nuclease in Genome Stability
Fen-1 Nuclease in Genome Stability

... One type of genomic instability results from the expansion of variable nucleotide repeat sequences, an excess of which cause of genetic diseases like Huntington’s disease, myotonic dystrophy, and fragile X syndrome. The expansion of trinucleotide repeats in certain regions of the human genome are mo ...
< 1 ... 750 751 752 753 754 755 756 757 758 ... 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