Tag Archives: DNA

DNA unwinding mechanism of helicases

Helicases are a class of proteins that are responsible for separating DNA duplex into single strands, which is a precursor to many types of DNA transactions in the cell. According to the structures, helicases fall broadly into

Protection from DNA-damage with the natural compound resveratrol

Resveratrol is currently known as a health-beneficial natural compound that is contained in grape skins, red wine, and other natural foods. Recent studies suggest that the compound could elongate the life spans of several organisms through a

Modalities to overcome cancer cells safeguard

The increase of intracellular concentration without raising the applied drug doses is big challenge for cancer treatments. Cancer cells employ multiple mechanisms to resists the anticancer drugs action. One of the mechanisms involves P-glycoprotein. The role of

Identify the bacteria within and on your-self

The human intestine (gut) and other body sites harbor numerous microorganisms (bacteria, viruses, archaea, including fungi), collectively referred to as the microbiome or microbiota. The genome of these microbes encodes for metabolic functions and contribute significantly to the

β-Carotene requirement for anti-aging depends on genetic background

Cellular telomere, a region of repetitive nucleotide sequences of TTAGGG, resides on both ends of chromosomes and its length is shortened by reflecting the replication number of chromosomal DNA, accordingly, telomere length is the most reliable indicator

Aberrantly methylated DNA regions in IgA Nephropathy patients affect the disease

The genome can influence the onset and the development of the diseases in several manner, and in the last years several studies have revealed the new role of the DNA methylation in this framework. The DNA methylation

Can we select best sperm?

About 48.5 million couples worldwide have been unable to birth a child after five years or more, and have used assisted reproductive technologies (ART). Male infertility is a cause in 30-50% of these cases. Infertile men tend

Why identify microscopic photosynthetic bacteria called Cyanobacteria?

Cyanobacteria, the small, harmless bacteria, are invisible to the naked eye. Cyanobacteria photosynthesize like all plants do and thus produce the oxygen we breath. In nature they can be found almost everywhere from the open ocean, to

Ex-vivo percutaneous absorption of enrofloxacin

Enrofloxacin is an antibiotic from the fluoroquinolone family used to cure several infections. This antibiotic inhibits DNA replication required for bacterial growth. It is against a wide range of bacteria, including those resistant to other antibiotics. Enrofloxacin

Hand disinfectant with activity against all viruses

Across the hospitals worldwide the same procedure can be seen to take place: the doctor or the nurse applies disinfectant (sanitizer) on their hand before examining the patient. In doing so, she or he inactivates bacteria, yeasts

An “appealing” small virus

In 1975 in London , an australian researcher, doctor Yvonne Cossart has detected by immunological procedures a new virus in the serum of a blood donor; the name of the blood pocket was B19 so this virus

Genetic differences in elite rugby players and the general population

We have known for many years that genetic variation is important in understanding any physiological trait and contributes substantially to the way people develop. Height for example is estimated as being ~80% determined by genetic variation with

Specific synthetic nucleic acids instead antibodies

 For a long time immunological methods have been applied in biological research as well as for detection and evaluation of various substances in clinical analysis of body fluids. Serum proteins, antibodies, form integral parts in all variants

Reconstruction of chromosomal structures

Under a certain approximation, the following simplified format can be adopted. DNA is considered as a very long sequence in the {A,C,T,G} alphabet. Certain regions of the sequence with specific positions have a particular role and are

HOX genes: The Rosetta Stone of the human cells biology

The cell memory program is a biological process that oversees several aspects of the cell life: i) where the new generated cell will be located ii) the fate of a new cell and the cell phenotype; iii)

Single nucleotide polymorphisms as genomic markers for high-throughput pharmacogenomic studies

DNA is a double strand molecule composed of nucleotide subunits, consisting of three components: a sugar, a phosphate group and one of four nitrogen-containing base, (Adenine, Cytosine, Guanine or Thymine). Among humans, DNA molecules are 99.9% identical.