Category Archives: DNA

Adherent cells, the kind that form the architecture of all multi-cellular organisms, are mechanically engineered with precise forces that allow them to move around and stick to things. Proteins called integrin receptors act like little hands and feet to pull these cells across a surface or to anchor them in place. When groups of these cells are put into a petri dish with a variety of substrates they can sense the differences in the surfaces and they will "crawl" toward the stiffest one they can find. Now chemists have devised a method using DNA-based tension probes to zoom in at the molecular level and measure and map these phenomena: How cells mechanically sense their environments, migrate and adhere to things. Nature Communications published the research, led by the lab of Khalid Salaita, assistant professor of biomolecular chemistry at Emory University. Co-authors include mechanical and biological engineers from Georgia Tech. Using their new method, the researchers showed how the forces applied by fibroblast cells is actually distributed at the individual molecule level. "We found that each of the integrin receptors on the perimeter of cells is basically 'feeling' the mechanics of its environment," Salaita says. "If the surface they feel is … Continue reading →

The very same building blocks that make us have been successfully programmed to form 32 differently-shaped crystal structures. The structures feature a precisely-defined depth and a variety of sophisticated 3D nanoscale attributes, thereby laying further foundations for the use of DNA to revolutionize nanotechnology. The news comes courtesy of scientists at Harvard's Wyss Institute for Biologically Inspired Engineering, which previously developed a DNA-brick self-assembly method to create over 100 complex 3D nanostructures about the size of viruses. That prior work made possible the creation of these new DNA crystals, which are more than 1,000 times larger than the older DNA brick structures large enough now that they are comparable to a speck of dust. "We are very pleased that our DNA brick approach has solved this challenge," said senior author Peng Yin, "and we were actually surprised by how well it works." The technique is modeled after the way in which Lego bricks interlock to build complex structures. This is possible thanks to the basic rules of DNA mixing: in forming base pairs, the A (adenine) nucleobase only binds to the T (thymine) one while C (cytosine) only binds with G (guanine). Combine many bases, changing the orientation by 90 … Continue reading →

RE-EDITED-God Proven 100%-again-MARS SCAR HURRICANES GALAXIES DNA RE_EDITED-To show an x-flare on the sun is the exact shape of the scar on Mars...thus proving a double helix energy burst created the mars scar...and proof the sun is Electrically driven. ... By: Scientific Lee … Continue reading →

Ascoli - Badante polacca investita, il dna sull'auto non di Maria Stanczyk Si infittisce il mistero su un caso che sembrava risolto. By: Redazione VeraTV … Continue reading →

DNA Geometry for Stretch Winding Strings. This shows how a DNA string can go from a long straight string to a helical string and then to a tighter coil and shows more discoveries with the Vector infra-structure. This geometry can be... By: ThePaulTM … Continue reading →

From Darwin to DNA: The Genetic Basis of Animal Behavior Evolution Matters Lecture Series: Lecture by Hopi Hoekstra, Professor of Zoology and Curator of Mammals at the Museum of Comparative Zoology, Harvard University How do certain animals, such... By: Harvard Museum of Natural History … Continue reading →

Danke | Dankesagung 1 | DNA Danke leute fr 10 Abonennten ! Das ist die Dankesagung 1 von 2 ! Wir hoffen es gefllt euch ! By: DieNerfAsassinen … Continue reading →

DNA: Toyota car ran over a man in Barabanki, UP One man succumbed to injuries after he was ran over by a Toyota car in Barabanki, Uttar Pradesh. By: Zee News … Continue reading →

Hebrew Israelite DNA: Genetics And Genealogy Establishing The Bloodline I'm a Hebrew Israelite and this channel is for other Hebrews and brothers, sisters and Lost Sheep of Israel, still in search of, and have yet to be found and incorporated back into the Nation... By: Yoshua ben Ephraim … Continue reading →

How DNA is replicated 2 Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos... By: khanacademymedicine … Continue reading →