• 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
Epigenetic Mechanisms of Gene Regulation
Epigenetic Mechanisms of Gene Regulation

... Five genes encoding DNMTs (including potential DNMT-like genes that may not be enzymatically active) have been identified in mammalian cells, D N M T l , 2, 3A, 3B, and 3L. ' '^^ Each gene is designated by the numbers 1, 2, 3, in the order in which they were identified. For the members of DNMT3 fami ...
"An In Vitro Selection Protocol for Threose Nucleic Acid (TNA) Using
"An In Vitro Selection Protocol for Threose Nucleic Acid (TNA) Using

... threofuranosyl sugars linked by 2 and 3 phosphodiester bonds. TNA is capable of forming antiparallel Watson-Crick duplex structures in a self-pairing mode, and can also cross-pair opposite complementary strands of DNA and RNA. The solution NMR structure of a self-complementary TNA duplex reveals t ...
The Roles of the Quorum-Sensing System in the Release of
The Roles of the Quorum-Sensing System in the Release of

... C12-HSL in PAO-JP1 and PAO-JP2, whereas no induction was noted for the PAO-JP2 cultures exposed to C4-HSL. ...
2007_Dolezel_NATURE_PROTOCO... - Institute of Experimental
2007_Dolezel_NATURE_PROTOCO... - Institute of Experimental

... probably never be routinely used in laboratories where only DNA content is analyzed. What are the options for sample preparation? A sample for FCM is necessarily a liquid suspension of single intact particles. The use of intact cells for the estimation of DNA content is not recommended, because thei ...
chargaff symmetric stochastic processes
chargaff symmetric stochastic processes

... Prokaryote and eukaryote dier also in DNA storage, that is more organized more evolved the organism is. For example, while the former do not separate the DNA from the cytoplasm by a nuclear membrane, the latter provide a nucleus to contain it. Furthermore, Eukaryotes package their DNA in highly or ...
NucleoSpin 96 Flash Plasmid and Large-Construct DNA
NucleoSpin 96 Flash Plasmid and Large-Construct DNA

... Note: Direct inoculation of cultures for BAC DNA preparation from single colonies or glycerol stocks (without preculture) may result in lower yields and less reproducible results due to higher differences in yields. Use a suitable pin-tool for 96-well plates or 8-channel pipette to inoculate the cul ...
The polymerase chain reaction
The polymerase chain reaction

... • Thermal asymmetric interlaced PCR (TAIL-PCR): for isolation of an unknown sequence flanking a known sequence. Within the known sequence, TAIL-PCR uses a nested pair of primers with differing annealing temperatures; a degenerate primer is used to amplify in the other direction from the unknown sequ ...
Single-molecule DNA biochemistry, genetic circuits and chromatin
Single-molecule DNA biochemistry, genetic circuits and chromatin

... wave optics have been applied to detect and manipulate single molecules. These techniques are especially valuable to study biochemical reactions which naturally involve only a limited number of molecules. A chemical reaction involving only a limited number of reaction centers like transcription has ...
GENECLEAN® Kit
GENECLEAN® Kit

... The best method for checking yields of DNA isolated by GENECLEAN® is to run an aliquot on an agarose gel using known quantities in adjacent lanes as controls. OD260 and fluorescent readings can also be used to estimate yields, but these methods are affected by trace amounts of salts and silica matri ...
Infectivity analysis of two variable DNA B components of Mungbean
Infectivity analysis of two variable DNA B components of Mungbean

... development in agroinoculated V. mungo and V. radiata plants, the two DNA B components were found to be distinctly different. ...
Physical interaction between proliferating cell nuclear antigen and
Physical interaction between proliferating cell nuclear antigen and

... side chain of Gln470 is connected to Gly200 and the Ala244–Arg246 of PfuPCNA through direct or indirect (via water) hydrogen bonds (Fig. 4). Gln470 is so deeply involved in the intermolecular interaction that the replacement of this glutamine with any other residue will be impossible.The short helic ...
DNA damage in round spermatids of mice with a targeted disruption
DNA damage in round spermatids of mice with a targeted disruption

... gently removed from these complexes and visually confirmed independently, first with Hoffman optics and then using phase contrast. Under Hoffman optics the criteria used was previously described (Tesarik and Mendoza, 1996) – picnotic clear looking eccentric nucleus with a darker acrosomal granule. S ...
Effects of Salt Concentrations and Bending Energy on the Extent of
Effects of Salt Concentrations and Bending Energy on the Extent of

... cannot be neglected. In particular, if the linear dimensions of the confining volume (the radii of phage capsids are generally no more than ;30 nm) are not large compared to the DNA persistence length (50 nm), then the resulting bending of the DNA must be directly taken into account. More explicitly ...
Separate metabolic pathways leading to DNA fragmentation and
Separate metabolic pathways leading to DNA fragmentation and

... nuclease and different digestion times on DNA degradation were next assessed, in order to determine if there is a correlation between the nuclear morphology and DNA fragmentation under a range of ~ n t conditions. DNA fragmentation in nuclei treated with 0.25/zg/ml micrococcal nuclease could be obse ...
CSE 181 Project guidelines
CSE 181 Project guidelines

Highly efficient nuclear DNA typing of the World War II skeletal
Highly efficient nuclear DNA typing of the World War II skeletal

... in skeletal remains from different mass graves according to the results of quantification. Since femurs were typed for all mass graves except Konfin II, the comparison of DNA preservation in femurs was made with four mass graves. We followed the published recommendations to ensure the quality standa ...
PPP Master Mix without MgCl2 - Top-Bio
PPP Master Mix without MgCl2 - Top-Bio

... All components of the qPCR 2x SYBR Master Mix are 2x concentrated, which facilitates rapid preparation of the PCR samples. The samples are prepared by mixing an aliquot of the Mix with oligonucleotide primers, template DNA and H2O (included). qPCR 2x SYBR Master Mix is especially useful for routine ...
DNA Pre-ConceptionStu - the Biology Scholars Program Wiki
DNA Pre-ConceptionStu - the Biology Scholars Program Wiki

... E. Sugar, a molecule of phosphate and one of four nitrogen containing bases 5. Which one of the following substances is found in DNA but not in RNA? A. Uracil B. Thymine C. Cytosine D. Adenine E. Guanine 6. What is the sequence of a strand of DNA complementary to the sequence listed below? -T-G-G-C- ...
Separate Metabolic Pathways Leading to DNA Fragmentation
Separate Metabolic Pathways Leading to DNA Fragmentation

... nuclease and different digestion times on DNA degradation were next assessed, in order to determine if there is a correlation between the nuclear morphology and DNA fragmentation under a range of ~ n t conditions. DNA fragmentation in nuclei treated with 0.25/zg/ml micrococcal nuclease could be obse ...
Polymerase Dynamics at the Eukaryotic DNA
Polymerase Dynamics at the Eukaryotic DNA

... How are three DNA polymerases distributed over two strands at one single replication fork? For several decades, researchers have been faced with the enigmatic problem of assigning functions to the three major replicative DNA polymerases in the nucleus: Pol2 ␣, Pol ␦, and Pol ⑀. It all started out mu ...
University of Groningen DNA Block Copolymers Schnitzler
University of Groningen DNA Block Copolymers Schnitzler

... Besides chemical synthesis, molecular biology techniques became important tools for the generation and postsynthetic modification of DBCs. In the chemical routes, the length of the nucleic-acid segment of DBCs is restrained due to the limits of solid-phase ODN synthesis. These restrictions were succ ...
Book 12 Chapter 34 - From The Mountain Prophecies
Book 12 Chapter 34 - From The Mountain Prophecies

... very souls will get the DNA, which is now growing in my body and through all that I have endured, it will not be a naïve DNA, but one, which has grown up under the most horrific, satanic assaults! This DNA will be “wise” to huge numbers of the bizarre schemes of torture and persecution, which these ...
2.5 Genetics - Science at St. Dominics
2.5 Genetics - Science at St. Dominics

... Replication of DNA – stage 2 • Base pairing occurs between the bases on the original strands of DNA and new free bases that enter the nucleus. • New complementary strands of DNA are formed alongside original strands. ...
Full-Length 16S Amplification, SMRTbell™ Library Preparation and
Full-Length 16S Amplification, SMRTbell™ Library Preparation and

... For studies targeting a single consensus sequence per sample, or for identification of relatively abundant organisms in non-complex metagenomic communities, amplicons may be multiplexed to utilize the complete capacity of a SMRT Cell. Note that a typical PacBio RSII SMRT Cell generates 40,000-60,000 ...
Oxidative DNA Damage Bypass in Arabidopsis thaliana Requires
Oxidative DNA Damage Bypass in Arabidopsis thaliana Requires

... may result in base change, base loss, base mismatch, base deletion or insertion, linked pyrimidines, strand breaks, and intraand interstrand cross-links (Bray and West, 2005). These DNA lesions can be both genotoxic and cytotoxic. Plants are particularly affected by the UV-B radiation of sunlight, w ...
< 1 ... 11 12 13 14 15 16 17 18 19 ... 331 >

DNA repair



DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as UV light and radiation can cause DNA damage, resulting in as many as 1 million individual molecular lesions per cell per day. Many of these lesions cause structural damage to the DNA molecule and can alter or eliminate the cell's ability to transcribe the gene that the affected DNA encodes. Other lesions induce potentially harmful mutations in the cell's genome, which affect the survival of its daughter cells after it undergoes mitosis. As a consequence, the DNA repair process is constantly active as it responds to damage in the DNA structure. When normal repair processes fail, and when cellular apoptosis does not occur, irreparable DNA damage may occur, including double-strand breaks and DNA crosslinkages (interstrand crosslinks or ICLs).The rate of DNA repair is dependent on many factors, including the cell type, the age of the cell, and the extracellular environment. A cell that has accumulated a large amount of DNA damage, or one that no longer effectively repairs damage incurred to its DNA, can enter one of three possible states: an irreversible state of dormancy, known as senescence cell suicide, also known as apoptosis or programmed cell death unregulated cell division, which can lead to the formation of a tumor that is cancerousThe DNA repair ability of a cell is vital to the integrity of its genome and thus to the normal functionality of that organism. Many genes that were initially shown to influence life span have turned out to be involved in DNA damage repair and protection.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report