• 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
Sequence-Specific Deoxyribonucleic Acid (DNA) Recognition by
Sequence-Specific Deoxyribonucleic Acid (DNA) Recognition by

Nucleotide Sequence of the Osmoregulatory proU Operon of
Nucleotide Sequence of the Osmoregulatory proU Operon of

... polypeptide, relatively hydrophilic (Fig. 3), with an Mr of 44,162; interestingly, it is devoid of any tryptophanyl residues. The predicted proV coding sequence extends beyond the Sall site at position 1810 for another 26 codons; consistent with this identification is the observation by my colleague ...
Analysis and Characterization of Nucleic Acids and Proteins
Analysis and Characterization of Nucleic Acids and Proteins

... In end labeling, labeled nucleotides are added to the end of the probe using  terminal transferase or T4 polynucleotide kinase.  ...
Plants` Epigenetic Secrets
Plants` Epigenetic Secrets

... diverse pathways overseeing the faithful passage of the methylome to daughter cells. ...
paper - Lirmm
paper - Lirmm

... can be affected by base substitutions leading to a composition that complies with this bias. If, in a long evolutionary time, a large number of codons in one or both sequences undergo such changes, they may be altered to such an extent that the common origin becomes difficult to observe by direct DN ...
Nucleotide Sequence and Organization of the Rat Heme Oxygenase
Nucleotide Sequence and Organization of the Rat Heme Oxygenase

... other examples: chick (38) and duck aD-globin genes (39), murine a*-crystallin gene (40) and human y subunit prenucleotides (indicated by an arrow in Fig. 4 4 , Lane a), which cursor gene of muscle acetylcholine receptor (41). In all these was not detectable in the presence of a-amanitin (lane b). c ...
Defining characteristics of Tn5 Transposase non
Defining characteristics of Tn5 Transposase non

1 - CiteSeerX
1 - CiteSeerX

... and it was estimated that the maximal content of cytosine in T6r+, for instance, was 0.2 per cent of its content of HMC. Conversely, analysis of the bacterial host and of its DNA did not detect HMC and the maximal HMC contents of these ~aterials were estimated to be 0.2 and 0.6 per cent respectively ...
PraderWilli syndrome resulting from an unbalanced translocation
PraderWilli syndrome resulting from an unbalanced translocation

... distal 5p suggesting a mechanism other than affinity to telomeric sequences. Proximal 15q is rich in repeat sequences and duplicons that are involved in the microdeletion seen in PWS, as well as in the formation of chromosome 15 supernumerary markers (18, 19). Such low-copy genomic repeats are incre ...
pdf
pdf

... from the euphotic zone at Station 2 and the chlorophyll maximum at Station 3 (Table 1) were sequenced, no nifH DNA sequences were detected among those clones. This suggests that N2-fixing cyanobacteria were not abundant in these waters. Nevertheless, we did detect nifH gene expression: four cDNA seq ...
Chapter 15 - HCC Learning Web
Chapter 15 - HCC Learning Web

... As a consequence, females consist of a mosaic of two types of cells, some with an active paternal X chromosome, others with an active maternal X chromosome.  After an X chromosome is inactivated in a particular cell, all mitotic descendants of that cell will have the same inactive X.  If a female ...
Comparison of DNA Sequences with Protein Sequences
Comparison of DNA Sequences with Protein Sequences

... TFASTX/Y use a similar strategy, but instead of augmenting the query-sequence lookup table, the library sequence is encoded as two separate three-frame translations, one forward and one reverse. Again, steps 3 and 4 are modified for DNA–protein comparison and TFASTX/Y provide a full Smith–Waterman a ...
Amplification of 16S rRNA Genes from Frankia Strains in Root
Amplification of 16S rRNA Genes from Frankia Strains in Root

... ranged from 0 to 5 CFU on LB agar and R2A agar per 104 hyphal clusters. Each hyphal cluster contained between 102 and 103 Frankia genomes, so the measurable proportion of contaminating bacterial genomes was quite low. Phenolic compounds present in actinorhizal nodule homogenates normally turn bright ...
AP & Regents Biology
AP & Regents Biology

... 1. The mechanism of action of restriction enzymes 2. The different results you would expect if a mutation occurred at the recognition site for enzyme Y. ...
Detection of genetically modified cotton seeds using PCR
Detection of genetically modified cotton seeds using PCR

Manipulating Yeast Genome Using Plasmid Vectors. In: Gene Expression Technology.
Manipulating Yeast Genome Using Plasmid Vectors. In: Gene Expression Technology.

... 8 j. D. Boeke, F. Lacroute, and G. R. Fink. Mol. Gen. Genet. 197, 345 (1984). 9 B. B. Chatoo, F. Sherman, T. A. Fjellstedt, D. Mehnert, and M. Ogur, Genetics 93, 51 ...
Aminoacyl-tRNA Synthetase Production for Unnatural Amino Acid
Aminoacyl-tRNA Synthetase Production for Unnatural Amino Acid

... Master of Science Proteins—polymers of amino acids—are a major class of biomolecules whose myriad functions facilitate many crucial biological processes. Accordingly, human control over these biological processes depends upon the ability to study, produce, and modify proteins. One innovative tool fo ...
004 - cse.sc.edu
004 - cse.sc.edu

... • Text is handled in Perl as a string • This basically means that you have to put quotes around any piece of text that is not an actual Perl instruction. • Perl has two kinds of quotes - single ‘ and double “ (they are different- single quote will print as is) ...
Lectures prepared by Christine L. Case Chapter 8 Microbial Genetics
Lectures prepared by Christine L. Case Chapter 8 Microbial Genetics

Separation of DNA Restriction Fragments by Ion
Separation of DNA Restriction Fragments by Ion

... wide spectrum of amino groups with pK values evenly spread over the whole pH range. On this column each sample molecule will interact with a number of the different amino groups. Furthermore, the net charge of the matrix will be strongly pH dependent, highly charged at low pH and little charged at h ...
DNA Evolution 3.0 Administrator Guide
DNA Evolution 3.0 Administrator Guide

... The DNA Evolution Archive Manager is software that runs either on the Linux appliance or on a Mac system, based on customer environment and workflow requirements. (Currently, there is no Archive Manager for Microsoft Windows. However, archiving from Windows machines is supported via the archive clie ...
Mapping the histone code at hMLH1. - JScholarship
Mapping the histone code at hMLH1. - JScholarship

... DNA hypermethylation-associated gene silencing Epigenetics defines all heritable changes in gene expression that are not the result of alterations in the primary DNA sequence. It is increasingly apparent that epigenetics, heritable changes in gene expression that are not caused by changes in DNA se ...
Cytogenetics
Cytogenetics

... Loss or gain of a single chromosome(s) Results from errors in division during meiosis, where a daughter cell receives both pairs of a particular chromosome (nondisjunction errors). Addition of an extra chromosome, trisomy, has been described for all the chromosomes but only three autosomal trisomies ...
Cloning and Genetic Analysis of Six Pyrroloquinoline
Cloning and Genetic Analysis of Six Pyrroloquinoline

... were killed by EMS. In preliminary experiments the mutagenized cells were used to inoculate separate small cultures, with the aim of isolating a single mutant strain from each culture, so as to obtain independent mutations. However, the PQQ- mutants obtained by this method were all affected in pqqA, ...
Atomistic understanding of kinetic pathways for single base
Atomistic understanding of kinetic pathways for single base

... methyltransferase enzyme has been investigated in a similar manner. Most closely related to the present work, Pohorille et al. (18) determined the free energy for unbinding of an end base pair in DNA as a function of the distance between hydrogen-bonding groups and obtained a single 0.45-ns molecula ...
< 1 ... 14 15 16 17 18 19 20 21 22 ... 492 >

DNA supercoil



DNA supercoiling refers to the over- or under-winding of a DNA strand, and is an expression of the strain on that strand. Supercoiling is important in a number of biological processes, such as compacting DNA. Additionally, certain enzymes such as topoisomerases are able to change DNA topology to facilitate functions such as DNA replication or transcription. Mathematical expressions are used to describe supercoiling by comparing different coiled states to relaxed B-form DNA.As a general rule, the DNA of most organisms is negatively supercoiled.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report