• 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
Analysis of Gene Sequences
Analysis of Gene Sequences

... is because in humans, for example, gene coding sequences are separated by long sequences that do not code for proteins. Moreover, genes of higher eukaryotes are interrupted by i, which are sequences that are spliced out of the RNA before translation. The presence of introns breaks up the open readin ...
CH 3 GENETICS - TEST – GIFT GUIDE HINTS due
CH 3 GENETICS - TEST – GIFT GUIDE HINTS due

... ** Be able to complete Punnett Squares and answer questions about them. ** Be able to match the main vocab terms with the definitions and/or concepts they represent Alleles = are different forms of a gene. (Examples: tall or short) Amino acids = link together into a chain to make proteins when tRNA ...
Recent progress in understanding transcription factor binding
Recent progress in understanding transcription factor binding

... understanding and predicting gene regulatory network function. Transcription factors typically belong to a structural family containing many other proteins with a similar amino acid sequence. Even when the difference in nucleotide sequence preference between such proteins is subtle, their target gen ...
Glossary (34,35)
Glossary (34,35)

... Study that evaluates the association of specific genetic variants with an outcome of interest, the variants chosen based on their postulated association with the outcome or disease ...
HG06_geneexpression
HG06_geneexpression

... PROTEIN (enzymes) ...
BioSc 231 Exam 5 2003
BioSc 231 Exam 5 2003

... E. genetic drift _____ Enzyme that cleaves DNA at sequence-specific sites is called A. DNA polymerase B. ligase C. restriction endonuclease D. sticky ends _____ A restriction fragment containing a specific gene of interest can be identified by gel electrophoresis followed by transferring the DNA to ...
Protein Synthesis A gene is a segment of DNA that is located on a
Protein Synthesis A gene is a segment of DNA that is located on a

... b. rRNA reads the mRNA strand and assists in the assembly of proteins c. tRNA has a 3 nucleotide anticodon on one end and its corresponding amino acid attached to its other end. It gets the amino acid from the cytosol. d. tRNA carrying the amino acid methionine at one end and the anticodon UAC on th ...
Comprehension Questions
Comprehension Questions

Nucleus - Control Center of cell
Nucleus - Control Center of cell

... produce 100,000 different proteins • Arrangements of bases in gene produce a specific protein. ...
Document
Document

... the amino acid chain grows. – The mRNA is read codon by codon and the protein is built up one amino acid at a time in the correct sequence. ...
Chapter 20 Terms to Know
Chapter 20 Terms to Know

... the biotechnology tools that make cloning possible.  The key ideas that make PCR possible.  How gel electrophoresis can be used to separate ...
Slide 1
Slide 1

... DNA is made of nitrogenous bases adenine, guanine, cytosine and thymine. RNA is made of nitrogenous bases adenine, guanine, cytosine and uracil. GENE is a piece of DNA capable of forming a functional product either protein or RNA. 5. Every cell typically has thousands of genes. 6. RNA is of 3 major ...
EOC Vocab Review Terms
EOC Vocab Review Terms

... 1. ___Part of the experiment that does not contain the variable 2. ___Testable explanation for a problem 3. ___The factor in the experiment to be tested ...
Genetics: An Introduction
Genetics: An Introduction

... 1944: Oswald Avery, Colin MacLeod and Maclyn McCarty show that DNA can transform bacteria, demonstrating that DNA is the hereditary material. 1953: James Watson and Francis Crick determine the structure of the DNA molecule, which leads directly to knowledge of how it replicates 1966: Marshall Nirenb ...
Document
Document

... • Only one strand is used in DNA sequencing • Many copies of the strand are needed and produced via DNA cloning • Add radioactive phosphorus to DNA • Divide DNA into 4 groups that undergo different chemical treatments that break DNA into pieces • DNA pieces are separated by gel electrophoresis and b ...
Gene expression powerpoint
Gene expression powerpoint

... one person starts: “First….,” and says one sentence. The next group member picks up where the first left off, and so on. ...
of human DNA responsible for metastasis in breast cancer
of human DNA responsible for metastasis in breast cancer

... Metastasis is the process whereby cancer cells spread from their site of origin to distant sites of the body. Most primary tumours, including those of the brcast are thought to arise in a benign form and, at a late stage in development, to acquire multiple genetic altcrdtions that pmmotc disseminati ...
Student Exploration Sheet: Growing Plants
Student Exploration Sheet: Growing Plants

... Gizmo Warm-up Just as a construction crew uses blueprints to build a house, a cell uses DNA as plans for building proteins. In addition to DNA, another nucleic acid, called RNA, is involved in making proteins. In the RNA and Protein Synthesis Gizmo™, you will use both DNA and RNA to construct a prot ...
Student Exploration Sheet: Growing Plants
Student Exploration Sheet: Growing Plants

... Gizmo Warm-up Just as a construction crew uses blueprints to build a house, a cell uses DNA as plans for building proteins. In addition to DNA, another nucleic acid, called RNA, is involved in making proteins. In the RNA and Protein Synthesis Gizmo™, you will use both DNA and RNA to construct a prot ...
B3.3 Genetics ANSWERS Worksheet Two Molecular Genetics 1
B3.3 Genetics ANSWERS Worksheet Two Molecular Genetics 1

... transcription only uses the coding strand. The enzymes are also different; DNA replication uses helicase, DNA polymerase and DNA ligase, whereas transcription uses RNA polymerase. ...
Unit 4 (ch 10)
Unit 4 (ch 10)

... direction The primed numbers refer to the C of the sugar. The bases are attached to the 1’ carbon and the phosphate groups are attached at the 5’ sugars. Nucleotides form covalent bonds between the 3’ carbon of one and the 5’ carbon of the other nucleotide. ...
PowerPoint-RNA
PowerPoint-RNA

... beginning of an mRNA molecule 2. A tRNA molecule carrying an amino acid matches up to a complementary triplet on mRNA on the ribosome 3. The ribosome attaches one amino acid to another as it moves along the mRNA molecule 4. The tRNA molecules are released after the amino acids they carry are attache ...
E co
E co

... each end of the blunt-ended DNA. EcoRI digestion removes all but the terminal one,leaving the desired 5’-overhangs.(b)cloning vectors often have polylinkers consisting of a multiple array of restriction sites at their coning sites, so restriction fragments generated by a variety of endonucleases can ...
Learning objectives
Learning objectives

... 2. How did Avery’s experiment identify DNA as the transforming factor? (Page 340) 3. How did Hershey and Chase’s experiment with T4 bacteriophages confirm that DNA not proteins was the transforming factor? (Page 341) The Role of DNA (12.1) 1. Describe (use figure 12-4) and explain the role of DNA. ( ...
Chapter 8: The Origins of Life
Chapter 8: The Origins of Life

... o In each of these “worlds” life may have driving its own formation through the process of autocatalysis, in which reactants and products organize themselves into a more complex system o Autocatlysis is a type of self-organizing system; this type of behavior has been observed repeatedly in laborator ...
< 1 ... 791 792 793 794 795 796 797 798 799 ... 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