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orasa sukmark

Junk DNA Can Revive and Cause Disease, Study Finds - NYTimes.com - 0 views

www.nytimes.com/...20gene.html

shared by orasa sukmark on 30 Mar 12 - No Cached
  • can rise from the dead like zombies
  • dead gene come back to life and cause a disease
  • a dead gene come back to life and cause a disease.
  • ...16 more annotations...
  • Some of those genes, surprised geneticists reported Thursday, can rise from the dead like zombies, waking up to cause one of the most common forms of muscular dystrophy.
    • adisa narula
      adisa narula on 30 Mar 12
       
      Do these genes revive automatically?
  • It is a dominant genetic disease.
  • people who have the disease cannot smile.
  • FSHD affects about 1 in 20,000 people
  • function, if any, is largely unknown.
  • function, if any, is largely unknown
  • FSHD, is one of the most common forms of muscular dystrophy.
  • in a way FSHD was the easy case — it is a disease that affects every single person who inherits the genetic defect. Other diseases are more subtle, affecting some people more than others, causing a range of symptoms.
  • The dead gene was also repeated on chromosome 10, but that area of repeats seemed innocuous, unrelated to the disease. Only chromosome 4 was a problem.
  • chromosome 4 was a problem.
  • No one whose dead gene was repeated more than 10 times ever got FSHD
  • it was not completely inactive. It is always transcribed
  • copied by the cell as a first step to making a protein.
  • But the transcriptions were faulty, disintegrating right away. They were missing a crucial section, called a poly (A) sequence, needed to stabilize them.
  • But the transcriptions were faulty, disintegrating right away. They were missing a crucial section, called a poly (A) sequence, needed to stabilize them.
  • extra copies change the chromosome’s structure, shutting off the whole region so it cannot be used.
orasa sukmark

Cloned Meat & Milk Coming - 1 views

www.i-sis.org.uk/loned_Meat_and_Milk_Coming.php

meat milk coming Genes

shared by orasa sukmark on 16 Apr 12 - No Cached
  • Milk and meat from ‘cloned’ animals’ offspring could soon be on sale without any labels
  • The UK government has no objection to selling meat and milk from clones.
  • There are currently just over 100 offspring of cloned animals on British farms, but this will rise dramatically if the EC gets its way.
  • ...1 more annotation...
  • According to BEUC, an overwhelming majority of EU consumers do not want cloning to be used for food production purposes. Some 84 per cent are concerned about the long-term health and safety impacts.
  • orasa sukmark on 16 Apr 12
     
    Cloned Meat and milk will be sold soon.
Paige Prescott

Genes Are No Crystal Ball For Disease Risk - Science News - 0 views

www.sciencenews.org/..._crystal_ball_for_disease_risk

genes disease

shared by Paige Prescott on 14 Apr 12 - No Cached
  • For all but four diseases, the genetic data would fail to determine who is likely to contract the condition in most cases,
  • genetics are only part of the story when it comes to determining health. Lifestyle, environment and random chance play a bigger role than genes, or work with genes, to cause or protect against disease.
  • Paige Prescott on 14 Apr 12
     
    Looking at twin data, researchers found that genetics alone could not account for the risk of disease.
Nitchakan Chaiprukmalakan

Proteins and quantum transition: Instant shape-shifting - 0 views

scitechstory.com/...nsition-instant-shape-shifting

shared by Nitchakan Chaiprukmalakan on 13 Apr 12 - No Cached
  • The genetic code in DNA provides the template to manufacture protein into all the cells of an organism.
  • Proteins are made by stringing together amino acids. For general purposes there are twenty amino acids in protein and they can be put together in endless combinations, some in short chains (yeast averages 466 amino acids), some long chains (titins have nearly 27,000 amino acids) and everything in-between. The pattern of amino acids determines much of the functionality of the protein.
  • Proteins are three-dimensional puzzle pieces. They are generally very complicated in shape. Even a small protein of only 100 amino acids can theoretically have 10^100 (ten to the hundredth power) different configurations.
  • ...7 more annotations...
  • most protein reconfigurations occur in nanoseconds
  • In research on proteins, it was assumed (given their chemical composition) proteins would uniformly fold as they cool down and unfold as they heat up. (Think of a balloon expanding and shrinking with the temperature of the air inside.) The experiments didn’t bear this out; the rate of folding or unfolding according to temperature change was unequal (asymmetric) and uneven (nonlinear).
  • In recent biochemistry a great deal of work is done with ‘tagging’ or ‘marking’ molecules with fluorescent and phosphorescent materials. It’s well known that fluorescence and phosphorescence are phenomena closely related to protein folding and they can only be understood in terms of quantum transition between molecules.
  • With a quantum transition, the protein could change configuration by ‘jumping’ – skipping all the transition steps – to the final configuration. They call this quantum folding and they developed a mathematical model that shows how the folding, which is virtually instantaneous, would react to change in temperature.
  • Their quantum transition model matched the folding curves for 15 different proteins and also provides an explanation for the different rates of folding and unfolding among these proteins.
  • Luo and Lu’s paper is short, a mere 16 pdf pages, and the model is unpretentious mathematically. (Luo has several other related papers on arXiv.) It comes from unknown researchers in an unknown corner of the academic world, and it’s published on the open-source arXiv system. The lack of pedigree means that it will take more time than usual for scientists around the world to learn of it, examine it, and possibly test it.
    • Nitchakan Chaiprukmalakan
      Nitchakan Chaiprukmalakan on 13 Apr 12
       
      This is not accepted as a true fact yet and has to be proven.
Mickey Tsai

Niceness a combination of genetics and environment, the Neurogenics of Niceness study f... - 0 views

www.heraldsun.com.au/...story-fn7x8me2-1226324345541

genetics environment research

shared by Mickey Tsai on 14 Apr 12 - No Cached
  • BEING a nice person could come down to having a good set of genes
  • "kind" behaviour of more than 700 individuals was partly linked to receptor genes for oxytocin and vasopressin.
  • uch of the hormone you have, it's how responsive your brain is to the hormo
  • ...2 more annotations...
  • It's not about how much of the hormone you have, it's how responsive your brain is to the hormones
  • "(Niceness) is a combination of genetics and your environment."
  • Mickey Tsai on 14 Apr 12
     
    A study shows that genetics could play a role in determining "niceness". The kind behavior is found to be linked to receptor genes for oxytopic and vasopressin. People that are more responsive to it are more inclined to donate money, pay taxes, give blood, report crime etc. It isn't about how much of the hormone you have but how responsive you are to it. Of course genetics isnt the only factor, if you are surrounded by nice people it is likely that it would rub off on you.
Nickyz P.

Impact Statements System | CAES Intranet | UGA - 0 views

www.caes.uga.edu/...index.cfm

shared by Nickyz P. on 16 Apr 12 - No Cached
  • The applied insect genetics laboratory in the Entomology Department at the University of Georgia has focused on invasive subterranean term
  • Thus we continue to track and monitor through genetics the Formosan termite movements into and around Georgia. The knowledge of how they are coming into the state as well as how they are moving about the state can be invaluable for managing this traffic.
Oranicha Jumreornvong

EBSCOhost: What Makes Each Brain Unique - 0 views

web.ebscohost.com/...detail

shared by Oranicha Jumreornvong on 15 Apr 12 - No Cached
  • Oranicha Jumreornvong on 15 Apr 12
     
    NEUROSCIENCE How can identical twins grow up with different personalities? "Jumping genes" move around in neurons and alter the way they work YOUR BRAIN IS SPECIAL. So is mine. Differences arise at every level of the organ's astonishingly intricate architecture; the human brain contains 100 billion neurons, which come in thousands of types and collectively form an estimate of more than 100 trillion interconnections.
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