Loren Williams/Chemistry and Biochemistry,
Georgia Institute of Technology
In a living cell, the DNA double helix
wraps around a nucleosome, above
center, and binds to some of its
proteins, known as histones.
Posted on 07/25/2006 4:01:31 AM PDT by Pharmboy
Loren Williams/Chemistry and Biochemistry,
Georgia Institute of Technology
In a living cell, the DNA double helix
wraps around a nucleosome, above
center, and binds to some of its
proteins, known as histones.
Researchers believe they have found a second code in DNA in addition to the genetic code.
The genetic code specifies all the proteins that a cell makes. The second code, superimposed on the first, sets the placement of the nucleosomes, miniature protein spools around which the DNA is looped. The spools both protect and control access to the DNA itself.
The discovery, if confirmed, could open new insights into the higher order control of the genes, like the critical but still mysterious process by which each type of human cell is allowed to activate the genes it needs but cannot access the genes used by other types of cell.
The new code is described in the current issue of Nature by Eran Segal of the Weizmann Institute in Israel and Jonathan Widom of Northwestern University in Illinois and their colleagues.
There are about 30 million nucleosomes in each human cell. So many are needed because the DNA strand wraps around each one only 1.65 times, in a twist containing 147 of its units, and the DNA molecule in a single chromosome can be up to 225 million units in length.
Biologists have suspected for years that some positions on the DNA, notably those where it bends most easily, might be more favorable for nucleosomes than others, but no overall pattern was apparent. Drs. Segal and Widom analyzed the sequence at some 200 sites in the yeast genome where nucleosomes are known to bind, and discovered that there is indeed a hidden pattern.
(Excerpt) Read more at nytimes.com ...
and leave it up to the NYTimes to out it
;) couldn't resist....
Thank you.
Yep and Islam's positive contribution to the world is...>crickets<
After careful study, they decoded it and got:
ALL YOU BASE ARE BELONG TO US
:)
This is undoubtedly part of the "control structure" that tells your genes what to do. Something else tells them where to go no doubt. There should also be a control structure in there that tells all the others "when" to do whatever it isthey do.
The genes, per se, are not in charge of the show. They just make proteins.
ps, The Albino Code is a funny 8 minute takeoff you can find on the web, based on the recent movie who's name escapes me...
further evidence of evolution ex nihilo
Think of life as the way "we", whoever "we" are (in our multidimensional selves) travel the galaxies, and probably other places.
There is hope for the rat fatheads. There's an article out this morning that fat cells can be turned into muscle.
Close, it actually says...
ALL YOU BASE ARE BELONG TO ME, I AM.
All your base pairs are belong to us.
Great article!
Naaah, there's an Israeli involved. /Sarcasm.
LOL
The beauty and complexity of the human body is simply staggering. I went to school for engineering, and I know enough to know that the most complex mechanical device looks like a child's play thing in comparison to the human body. The difference is in many orders of magnitude, the number of which we can only guess at.
Sounds HUGH!
Are you attempting to make some sort of argument?
"Note the first author is at the Weizmann Institute in Rehovot, Israel, about 15 miles outside of Tel Aviv. This is what Israelis spend their time on when they're not doing the world's dirty work by eliminating fascist lunatics. (Until the Israelis began their brutal occupation of the West Bank and Gaza, there were exactly zero universities there. Now there are six.)"
Yes. tiny Israel produces world-leading medicine, science, and technology--far more than the entire Islamic world. What do Muslims manufacture, anyway, besides suicide bombers? I sometimes wonder if they even make their own bomb vests, or buy them from some sweatshop in China.
It's as if you where given a Peta-byte hard drive with no knowledge of the controller, file system, or operating system, and where asked to extract and make use of the content.
We're still at the early stages of all of this.
Yes, exactly! It's kind of like worlds within worlds and atoms within atoms, and who knows which atom-planet we are now on, right?
Now excuse me. I have a 10 o'clock Feminine Sociology Class. We can continue this important discussion later on in the dorm, as we all excitedly gather around together and figure out more mysteries of the universe!
Ta-Ta!
*giggle*
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.