• 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
Gene Section P53 (protein 53 kDa) Atlas of Genetics and Cytogenetics
Gene Section P53 (protein 53 kDa) Atlas of Genetics and Cytogenetics

... the type of mutation may vary from one tumor type to another; in general, mutations are found in the central part (exons 4-8) of the p53 gene; these mutations are missense, non-sense, deletions, insertions or splicing mutations; there are some hot-spots for mutations at CpG dinucleotides at position ...
1 Basic Genomics 1. How do you sequence DNA? Two methods
1 Basic Genomics 1. How do you sequence DNA? Two methods

... 4. Where are the genes? de novo (or ab initio) prediction – use computer programs (such as Genscan or Genie) to identify genes from raw DNA sequence data. Look for long open reading frames (ORFs) that begin with a start codon (ATG) and end with a stop codon (TAA, TAG, TGA), but contain no internal ...
DNA TRANSFORMATION - Library Video Company
DNA TRANSFORMATION - Library Video Company

... are joined by relatively weak hydrogen bonds, allowing them to “unzip” when necessary.The alternating sugar and phosphate units form the backbone of a structure that resembles a twisted ladder known as a double helix. Bacteria, such as E. coli, have genes on a chromosome, as well as a small circular ...
Characteristics of Living Things (Essay
Characteristics of Living Things (Essay

... Part c. Please explain the basic structure of a DNA nucleotide. (draw a picture if possible) How do we know which end of the DNA double helix is the 3’ end and which end is 5’ end? Additionally, how does one side of the DNA molecule serve as a template for the other side? (think of semiconservative ...
document
document

... • Nucleic Acids-the instructions for building life ...
Exam IV 1710_1711 F'01.doc
Exam IV 1710_1711 F'01.doc

... an amino acid that is not methionine. ...
Chapter 9: Gene Transfer, Genetic Engineering, and Genomics
Chapter 9: Gene Transfer, Genetic Engineering, and Genomics

... f. Explain the unique place of the virus in the process of bacterial transduction, and compare in detail generalized transduction and specialized transduction. g. Identify the decisive pieces of research that permitted scientists to develop the process of genetic engineering. h. Describe in detail t ...
Slide 1
Slide 1

... amino-acylated tRNAs. • What was the significance of this work? • Nirenberg’s assay delivered a method to assign each specific amino acid to one or more trinucleotides. • Twenty amino acids were assigned at least one trinucleotide, 61 in total. • Three trinucleotides where determined to be “stop” co ...
and genotoxic biomarkers in two bivalve mollusc species
and genotoxic biomarkers in two bivalve mollusc species

... The marine bivalve Mytilus sp. has been widely used as a sentinel species in biomonitoring studies. For comparison, the common cockle Cerastoderma edule was used in this study as an alternative species for detecting biological effects of contaminants in marine and estuarine environments. In vitro va ...
Biofuel phyto-forensics case resolved through PCR
Biofuel phyto-forensics case resolved through PCR

... that such sorghum can be toxic to consumers. He breaks the lock and takes away the bag of Bio-Fuel sorghum seeds. On returning home that evening BF discovers the break ins and immediately suspects TF for the theft due to history of their encounters. At the investigation agency, Mario (the geneticist ...
Genetic Technology - Solon City Schools
Genetic Technology - Solon City Schools

... • 2. bacteria that live on the roots of corn plants have been given the gene that produces insect toxin. The toxin protects the roots from insects. • 3. Possibly engineer bacteria that live in soil to make more nitrogen (natural fertilizer) so farmers can cut back costs on fertilizers. ...
File - Intervention
File - Intervention

...  If the sequence of one strand on DNA is… ATC CGT GAT  its complementary strand will be… TAG GCA CTA  DNA is double stranded and those two strands twist around each other to form a double helix. The two strands of DNA are held together with hydrogen bonds between the nitrogen bases. ...
Transcription and Translation
Transcription and Translation

... Manipulation of the genes of crop plants to make them more resistant to disease from insects and improve crop ...
Molecular Evolution and Non-extensive Statistics
Molecular Evolution and Non-extensive Statistics

... molecules necessary for the RNA world are much smaller than the disponibility given by the evidences (Lazcano and Miller), and thus the RNA world hypothesis can not be discarded. But there is still a gap in the model, the explanation of how the nucleotide random combinations give rise to organized l ...
Exam Review 2012-13
Exam Review 2012-13

Exam Procedures
Exam Procedures

... 22. Which statement about rRNA molecules is true? A. The presence of modified nucleotides predominantly determines structure B. Each molecule folds into a common 3D structure for function C. They undergo extensive processing to add a cap and poly A tail D. They function as complex protein:RNA comple ...
PDF Datastream - Brown Digital Repository
PDF Datastream - Brown Digital Repository

... b.     Randomly, ribozymes (RNA molecules that act as enzymes) capable of self-replication would have formed i.      The more error-prone RNA molecules were more likely to evolve (more chances for favorable mutations) c.      Selection pressures would have resulted in ribosomes in order to form poly ...
Read the passage. (i) Name the substance in cells which carries
Read the passage. (i) Name the substance in cells which carries

... pigment into cotton plants. Their aim is to get cotton plants which produce blue cotton so that denims can be manufactured without the need for dyeing. The scientists have also inserted genes that prevent cotton fibres twisting, with the aim of producing drip dry shirts made from natural fibres. Oth ...
Molecular_genetics_revision_checklist
Molecular_genetics_revision_checklist

... Functions, enzyme action (lock and key / induced fit) and factors that affect enzyme action. In terms of nucleotide, complementary bases, double helix structure. In terms of unwinding, base pair matching and semi conservative construction. Include the terms chromatid, chromosome and centromere, hist ...
1. A 6-frame translation map of a segment of DNA is shown, with
1. A 6-frame translation map of a segment of DNA is shown, with

... transcribed at the time that the electron microscopy was done. [That's plausible... any given gene may be transcribed only some of the time, so it's quite possible that this gene was not being transcribed at the time the sample was collected.] 3. This question concerns a mutation in a gene that crea ...
Unity of Life - stephen fleenor
Unity of Life - stephen fleenor

... 1B.1a.1: DNA and RNA are carriers of genetic information through transcription, translation, and replication. 1B.1a.2: Major features of the genetic code are shared by all modern living systems. 1B.1a.3: Metabolic pathways are conserved across all currently recognized domains. 1B.1b: Structural evid ...
A. Overview - eweb.furman.edu
A. Overview - eweb.furman.edu

Biology 3A Exam 3 Study Guide The exam will consist of multiple
Biology 3A Exam 3 Study Guide The exam will consist of multiple

... primase, DNA ligase) and their respective roles. know chromosome organization: chromatin, histone proteins, nucleosome, heterochromatin, euchromatin, loop domains. priming, 5’ --> 3’ direction. origins of replication, replication bubbles (why do eukaryotes have many whereas prokaryotes only have one ...
Errors in Genes and Chromosomes
Errors in Genes and Chromosomes

... being substituted or replaced with another. End result is a different nucleotide sequence than the original DNA sequence ...
Nucleic Acids
Nucleic Acids

... D. A tRNA brings an amino acid to its codon on mRNA. B. The ribosome moves along a mRNA to add amino acids to the growing peptide chain. C. A completed polypeptide is released. ...
< 1 ... 681 682 683 684 685 686 687 688 689 ... 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