DNA Pioneer Francis Crick Passes Away 247
Neil Halelamien writes "Francis Crick, who discovered the structure of DNA with James Watson, Rosalind Franklin, and Maurice Wilkins, passed away Wednesday in San Diego. His co-discovery of 'the secret of life' made him one of the most influential scientists of all time. In more recent years, he shifted his research efforts from molecular biology to neuroscience, with a particular interest in the question of the neural basis of consciousness."
Not gone for long. (Score:3, Funny)
In clone form.
Re:Were They Right, Though? (Score:4, Interesting)
I am by training a molecular biologist and I'm pretty sure that the 4 strand helix model does not support the techniques used during genetic engineering in which proteins are used to cut DNA leaving single stranded "sticky" ends that then reattatch to the inserted genes. The structure & function of at least some of these proteins is very well characterised.
Nor does 4 stranded DNA map as readily to tRNA which is single stranded.
Nor does 4 stranded map particularly well to the macro structure of DNA with the extra folding around histone proteins.
Yes DNA does not retain it's classical double helix all of the time. Often it is being repaired or replicated & is unfolded or it is stored in a highly dense packed format but the one to one corrolation between A-T & G-C plus the strong natural binding between the bases means that they probably did get it right.
All my knowledge is out of date by nigh on 20 years but I know enough to be confident that Rosie's results were interpreted correctly by Watson & Crick.
How does a 4 stranded helix give better corrolation to the results? You can't just say these things without giving evidence.
Re:Were They Right, Though? (Score:2)
Four-stranded DNA structure stabilized by a novel G:C:A:T tetrad [nih.gov]
Re:Were They Right, Though? (Score:2)
Keep in mind, you two, I didn't say that the 2-stranded model is wrong. I simply said that it's possible.
There's other stuff, too (not that I'm trying to be a subversive, here :-) ). Take two threads, one black, one white, about a foot long. Tie the ends of each together to form two loops. Lay one on top of the other, and twist them around each other. That's an approximation of a double helix.
Now take two more foot-length threads, one black, one white. Tie them into loops, but this time make sure they
Re:Were They Right, Though? (Score:4, Insightful)
Yes, pretty much.
We now have structures for a lot of molecules that interact with DNA. DNA that doesn't have Watson and Crick's proposed structure in general won't work with all the proteins that bind to DNA. Sure, you can also suggest that the conformations that these proteins adopt when crystallized are not identical to their in vivo shapes, but it all hangs together pretty consistently.
More recently, NMR has been used to determine protein structures for proteins in solution--this gets you much closer to the in vivo state, and these results generally line up well with the x-ray crystallographic structures.
Electron microscopy of DNA supports the double-helix structure.
NMR experiments also support the double helix under all but some weird circumstances. The Nucleic Acid Database at Rutgers has a very cool collection of NMR [rutgers.edu] and x-ray [rutgers.edu] DNA structures.
In general, DNA exists in a double-helix form. The weird examples above show what happens in a few unusual cases: They represent a vanishingly small proportion of normal DNA--stuff that wouldn't show up in Watson and Crick's work, or configurations that have been deliberately engineered. So yes--skepticism might have been warranted fifty years ago, but we've been past any uncertainty about the predominant form of DNA for decades.
Re:Were They Right, Though? (Score:2)
That's an excellent point. I suppose I should have posited that where the two techniques show good agreement--and this is often the case--then we're probably at a reasonable approximation of the in vivo structure. Cheers.
Comment removed (Score:5, Interesting)
Re:at least (Score:4, Funny)
Re:at least (Score:2)
Someone needs to say it (Score:3, Interesting)
Re:at least (Score:4, Informative)
Without a god.
Re:at least (Score:2, Funny)
BOOOO to the Dice Rollers!!!
Re:at least (Score:2)
Re: (Score:2)
What I want to know is... (Score:3, Interesting)
Watson! Come here! I want you! (Score:5, Funny)
It was Crick's. Indeed, Watson didn't even know what Crick was up to in the next room. Suddenly a voice from nowhere rang out: "Watson! Come here! I want you!" After that, there was no looking back. A new era of technology was ushered in.
Didn't you learn this story in elementary school?
GMD
Re:Watson! Come here! I want you! (Score:2)
I bring it up because in the thread about the Genome guy, he was being criticized for using his own DNA.
Re:Watson! Come here! I want you! (Score:2)
Re:Watson! Come here! I want you! (Score:2)
Re:Watson! Come here! I want you! (Score:2, Funny)
I always kinda assumed they were using a cheek swab to get the samples. Guess I was wrong.
In either case, its pretty funny that the parent is marked Informative when its either a troll (more likely) or just plain wrong.
Re:Watson! Come here! I want you! (Score:2)
Re:Watson! Come here! I want you! (Score:2)
Re:What I want to know is... (Score:5, Informative)
no microscope (Score:3, Informative)
Watson and Crick didn't use a microscope. Watson and Crick were (iirc) chemists who built models of molecules and tried to create a model that represented a chemical which had the properties of observed dna. When they did their work microscopes capable of looking at molecules up close and personal did not exist. X-ray crystalography was as close as it got. There was some lady in Britain who was working on the DNA problem at the same time, who (in some people's opinion, including mine, n
Re:no microscope (Score:4, Informative)
http://www.pbs.org/wgbh/evolution/library/06/3/l_0 63_01.html [pbs.org]
Enough with the agendas (Score:4, Informative)
Let's be clear here, there were strong biases against women scientists at the time (and many still exist today). But she did not make the conceptual leap that Watson and Crick made. She never seemed to bear any ill will towards them, and was just happy that the truth was known. People in science get scooped all the time.
Sure, Watson made sexist and derogatory comments about Franklin in "The Double Helix", although one could argue that he made rude comments about nearly everyone involved. If you're angry at anyone, you should be angry at the Nobel committee who chose to wait until after Franklin's death to award the prize (which can't be awarded posthumously).
Re:no microscope (Score:5, Interesting)
We had some fabulous conversations about the nature of consciousness last summer in La Jolla, and he went on for hours and hours about the work his friend Christoff Koch was doing at Caltech - but the conversation was never about taking credit for ideas or who did what.
Wilkins went behind Rosalind Franklin's back and gave copies of her image data to James Watson. I don't believe that Crick even knew that he was looking at data without her permission. Regardless, he isn't the type of person to deny the credit she was due, nor to be shy about the fact that it was mostly he who deciphered the X-ray diffraction images. He was beyond uninterested in the politics side of science.
Like Dr. Crick, I studied physics and once thought I wanted to be a physicist. We discussed this, and I explained my reasons for not pursuing graduate studies these days, due to the excessive politics involved and the nature of funding, being beholden to a professor's interests and so on. And he agreed that if he were graduating from college today, he might feel the same way.
As for the "right bastard" part, like many scientists, and lots of people on Slashdot too, Dr. Crick was no social genius. He liked socializing with academics and people who would talk about ideas with him. But he always seemed to be a very decent person to me.
Re:no microscope (Score:2)
Franklin is a feminist hero, but here's a reality check: her science was wrong. She got her nitrogen the wrong way round, IIRC. It's not some Patriarchal White Male conspiracy.
Neither (Score:3, Interesting)
Crick didn't even know what Watson was doing the night that he made the mock-up. As an interesting note there was a bit of slack in the way the wooden "lego" was made that allowed the correct answer to emerge despite a slight flaw in the idea.
Lastly I think your joke was refering to Craig Venter [cnn.com] that used his own DNA at Celera, Right?. I have a lot of respect for Venter despite his slight Megalomaniac tendencies
Re:Neither (Score:2)
Re:What I want to know is... (Score:5, Informative)
Rosalind Franklin used X-rays [sdsc.edu] to clarify DNA's structure. Her research was then shown to Crick and Watson without her knowledge, and the two men were then able to decypher the structure of DNA.
They got the Nobel Prize for their discovery. She wasn't included in the prize, even though she was critical in the discovery of the molecule's structure.
Yeah! The Nobel Commitee is Corpsist! (Score:5, Informative)
Only living people can get the Nobel, and by the time of the prize, Rosie had died of cancer. There's no conspiracy.
Those monsters! (Score:2)
Re:Yeah! The Nobel Commitee is Corpsist! (Score:5, Informative)
UN Secretary-General Dag Hammarskjold received the award posthumously in 1961 [cnn.com].
Re:Yeah! The Nobel Commitee is Corpsist! (Score:4, Informative)
Watson and Crick didn't get their Nobel (in Physiology & Medicine, btw, not Chemistry, which has always puzzled me) until 1962, nine years after the publication of the Nature article, at which point Franklin had been dead four years.
p
Re:What I want to know is... (Score:2)
From your post: They got the Nobel Prize for their discovery. She wasn't included in the prize, even though she was critical in the discovery of the molecule's structure.
From the article [sdsc.edu] A debate about the amount of credit due to Franklin continues. What is clear is that she did have a meaningful role in learning the structure of DNA and that she was a scientist of the first rank.
The article you cite says that there is debate
He was also a proponent of directed panspermia... (Score:4, Interesting)
More on that theory in Wikipedia [wikipedia.org]. Interesting stuff!
Re:He was also a proponent of directed panspermia. (Score:2, Funny)
This sounds like a low budget Japanese film.
Re:He was also a proponent of directed panspermia. (Score:2)
Re:He was also a proponent of directed panspermia. (Score:2)
This hypothesis (it is not really a theory) reminds me of the Raelians [wikipedia.org], and their religion that is based on "aliens started life on Earth" thing.
Whether it is Francis Crick's panspermia or Rael's aliens, this hypothesis does not solve anything:
I would like to take this moment... (Score:5, Informative)
Re:I would like to take this moment... (Score:2)
I beg to disagree. For me, "The Astonishing Hypothesis" is much more interesting than, e.g. Marvin Minsky's "The Society of Mind" or Stuart Kauffman's "At Home in the Universe" or (bleh!) Ray Kurzweil's "The Age of Spiritual Machines".
dna pioneer (Score:2)
For all the bruthas who ain't here... (Score:5, Funny)
(also it needed a kernel update)
Sort of. (Score:5, Funny)
But Barbara McClintock did all the work!!!! (Score:2)
Re:But Barbara McClintock did all the work!!!! (Score:2)
Re:But Barbara McClintock did all the work!!!! (Score:2)
Standing on the shoulders of Giants . . . (Score:2)
Perhaps this discovery is the discovery of "smallpox vaccine" or the "Laws of Motion" of genetic engineering . . . each of these discoveries, profound and novel as a standalone discovery, enabled and launched an entirely new series of scientific research and discoveries over a period of hundreds of years.
300 years from now, we might say the same abou
The Dark Lady of DNA (Score:5, Informative)
Later on, more people learned of her contributions, but, sadly, she passed away in 1958 and was therefore ineligible for the 1962 Nobel prize that Watson, Crick, and Wilkonson shared. Without her name on the landmark publication or a Nobel prize, she has been largely forgotten.
To read more about her story, you should check out the book The Dark Lady of DNA [amazon.com].
Re:The Dark Lady of DNA (Score:4, Informative)
Here, here!
Also, to clarify some other posts, Barbara McClintock, while a brilliant scientist who did some facintating genetic work (transposons being the most famous, but her work on crossing over also worth a look), was not the unsung female hero of the double helix. Unlike Franklin, who did get shafted, McClintock won the Noble Prize in 1983, just like she deserved. I am astounded how many people get righteous about the Rosalind Franklin, but use McClintock's name. Sad really, that she had so little hold that even her champions have forgotten her name.
Re:The Dark Lady of DNA (Score:2)
SHe should get the highest accolades for her pioneering work with XRays
Re:The Dark Lady of DNA (Score:5, Informative)
Read this section:
One of the problems caused by the book was Dr. Watson's implication that the pair of them had obtained Dr. Franklin's data on DNA surreptitiously and hence had deprived her of due credit for the DNA discovery. Dr. Crick believed he obtained the data fairly since she had presented it at a public lecture, to which he had been invited. Though Dr. Watson had misreported a vital figure from the lecture, a correct version reached Dr. Crick through the Medical Research Council report. If Dr. Franklin felt Dr. Crick had treated her unfairly, she never gave any sign of it. She became friends with both Dr. Crick and Dr. Watson, and spent her last remission from cancer in Dr. Crick's house.
Hardly the miscredited dark lady some people claim her to be.
Re:The Dark Lady of DNA (Score:3, Informative)
Of all the folks in
Re:The Dark Lady of DNA (Score:2)
Nueron theory is consciousness is nice, but... (Score:3, Interesting)
It seems to me, and this is totally a gut feeling, that the basic 'units of consciousness' will be in nueral superstructers. I'm actually a supporter of a top down approach -- trying to tear apart things that are apparent to us in our consciousness --Woah! How about getting a definition of consciousness first -- and then trying to find what neurons are responsible for them. We're had more success this way -- finding which parts of the brain light up when we use language, recognize faces, solve math problems, etc.
Furthermore, all the models of nuerons thinking use them as logic gates. That seems to imply to me that some consciousness researchers think the brain is a huge Turing machine -- again, this doesn't seem right to me, because Goedel's Theorem, as I understand, shows there are things a Turing machine can't compute. And if humans can understand Goedel's theorem, we must have something qualitatively different than a Turing machine up there.
Re:Nueron theory is consciousness is nice, but... (Score:2, Informative)
This is one of the issues that Crick and Koch are always quick to address both in writing and in public talks. E.g. from http://www.klab.caltech.edu/~koch/crick-koch-cc-97 .html [caltech.edu]:
Re:Nueron theory is consciousness is nice, but... (Score:2)
From another tack, I think the gene metaphor doesn't really do the trick. People always assumed that the mechanism of inheritance was going to be physical, whether it was DNA, or protiens, or whatever. On the other hand, people seem to assume that consciouness is *non-physical*, like a spirit or soul. I guess
Re:Nueron theory is consciousness is nice, but... (Score:2, Interesting)
Besides, even beginning to speak of such things as "units" of consciousness is making many assumptions. I have an "itchy feeling" that the big C arises from a tremendously complex interaction across the many levels of analysis of brain (or "nEUral") structures (from protein phosphorylation to systems topography). The best unit we have to start with is the neuron, and thus neuron theory. They are clearly a computational unit, but nothing suggests an equivalently clear "unit" of c
You didn't read the book, did you? (Score:2)
We're had more success this way -- finding which parts of the brain light up when we use language, recognize faces, solve math problems, etc.
Which success are you talking about? I haven't known of any success in explaining consciousness based on which parts of the brain use more energy when we do certain tasks.
And if humans can understand Goedel's theorem, we must have something qualitatively different than a Turing machine up there.
As Doug
Re:You didn't read the book, did you? (Score:2)
Success as far as in, "This is Wernicke's area, this is where we put meaning together" or "This is Broca's area, this is where the brain decides how to move the parts of the mouth and throat in order to make speech". This is opposed to what came before, which was basically "We have no flipping clue, but it certainly is the brain that is
Re:Nueron theory is consciousness is nice, but... (Score:2)
That's not my argument. My argument, which Goedel demonstrated, is that there is at least one theorem that a Turing machine is not capable of understanding (in this case, Geodel's theorem). You're right, it is proveable. Anybody with enough training can understand it. But a Turing mac
pint in the Eagle,,, (Score:2)
and thank you to all the people that worked on the Xray labs that made this discovery possible
regards
John Jones
Re:pint in the Eagle,,, (Score:2)
Huh? sounds like you've already had half a dozen
We'll have no more of that - God (Score:5, Funny)
In the middle of the 20th century:
Crick: We've done it! We've figured out how life's essence can be boiled down to simple chemical reactions!
God: Aw, crap. Didn't mean for them to figure that out.
Fast forward to the present day:
Crick: That's it! It's so simple, how could I have missed it before! I've figured out how the soul's essence can be boiled down to simple neural combinations!
God: Alright, boy, you've gone far enough. [Flips switch]
Crick: Aaaah! [Hits floor]
Do you mean Genesis 2,17? (Score:2)
The Theorist (Score:5, Insightful)
Re:The Theorist (Score:2)
Don't forget Ed Lewis, 1918-2004 (Score:3, Informative)
This has been a particularly rough month for biologists as we also lost the great Ed Lewis [guardian.co.uk], Nobel prize winner and father of the homeobox.
Interesting consciousness demo (Score:2)
After doing this for a bit, the yellow dots start blinking in and out of consciousness -- it's really quite a startling effect. Incidentally, the demo is on the site for a book titled The Quest for Consciousness: A Neurobiological Approach [amazon.com], by Christof Koch, a close collaborator of the late Francis Cr
The state of science (Score:5, Insightful)
A post on a pioneer of DNA research: under 200.
Let's hope the next generation of iPod can cure cancer, or we're all fucked.
lifecycles (Score:2)
winner (Score:2)
San Diego Union Tribune? (Score:2)
Word to the respective mothers of Union-Tribune staff writers Scott LaFee and Bruce Lieberman for a very good article.
Speaking of neuroscience and counsciousness (Score:2)
http://www.bbc.co.uk/radio4/reith2003/ [bbc.co.uk]
Cryonics (Score:2)
Re:patentable ? (Score:2)
or could you only patent the technology used to make the discovery?
Patent #29381823: Method for discovering the helical structure of DNA using wire coat-hangers and pingpong balls.
Not sure about that one.
Re:patentable ? (Score:3, Informative)
Re:patentable ? (Score:2)
(about fed up with
Re:patentable ? (Score:2)
Re:patentable ? (Score:2)
Could also say
passed on
shuffled off
kicked the bucket
Tits up
Kicking back on the slab
'Y' cut candidate
DNdead
DOA
Crick run dry
and so on.
Grab some politness
Re:patentable ? (Score:2)
Even on slashdot. But if it was CNN I would probably pass out (or board the rofl-copter, as my friend says).
Re:patentable ? (Score:2)
They would piss a lot of people off, anf the reast of the people whould luagh there ass off.
And they would get readers.
Re:patentable ? (Score:2)
Re:patentable ? (Score:2, Interesting)
Re:patentable ? (Score:4, Insightful)
We might say (and I mean this with all due respect, Francis Crick was truly a great man to whom we owe much) with only a little poetic license, that the chemicals which constituted Francis Crick, even as we mourn the end of his life, are -- every adenine, cytosine, guanine, and thymine --, losing that central helical organization that made out of those disparate chemicals, the man Francis Crick.
We will also think of his wife, the artist Odile Speed, and his three children -- each of whom perpetuates one-half of Francis Cricks's genome -- and his four grandchildren -- each of whom perpetuates one quarter of that genome.
(And of course, I gave Francis Crick the traditional Slashdot salute here [slashdot.org].)
Re:patentable ? (Score:3, Informative)
I can't seem to find it on PBS' page, (perhaps a better title than 'DNA' would have helped) but here is an MSNBC article [msn.com] about the series. It's 5 hour long episodes that covers the race to discover what DNA looked like all, the mapping of the human genome, and some really intersting discussions about the ethics of patenting DNA.
P.S. It's av
Re:Good riddens (Score:4, Interesting)
http://www.ba-education.demon.co.uk/for/science/d
Re:Good riddens (Score:4, Insightful)
Science is a competitive field
The person that publishes first wins
Perhaps Watson and Crick's citation list was rather lite
I don't understand what the big deal is . . . this is science . . . Scientists at the top of their field are egotistical and competitive just like the people in most other careers.
Just because someone else sat in the lab and ran the experiments doesn't mean that conclusions drawn by others based on the same dataset should be credited to the original person that ran the experiments. I think that credit should be given to Watson and Crick for putting together lots of other pieces of knowledge and drawing a conclusion that fits all the data from all the sources in question. That's not stealing, that's not cheating . . . that's just good science.
Re:Good riddens (Score:2, Informative)
Re:Good riddens (Score:2)
Re:Late News (Score:2)
(FYI, I'm the guy who submitted the article, at around 3pm Pacific time)
Re:Studying Conciousness (Score:2)
The thing about consciousness, you kind of have to have a nobel prize to work on it. Otherwise everyone just thinks your a looney.
Re:Studying Conciousness (Score:3, Informative)
So? What if Christians are wrong? What if something like the "soul" doesn't exist without a material brain to support it?
Crick's later research was based on that: try to find in what ways a consciousness can arise from a purely material neural ne
Logic fallacy (Score:2)
Besides you can not replace one Neuron with anything. Each is unique not only in it's "logic" but it's biology as well.
Re:Studying Conciousness (Score:2)
Well, it would be rather nice to find that out, wouldn't it?
Re:Studying Conciousness (Score:2)
What if Christians are right and man has an imperishable soul?
Then they would have a really hard time explaining things like Altzhiemers, and other neural degenerative diseases.
Otherwise you wouldn't be you after you're dead.
This is in itself a philosophical problem. What is 'you'? You are very much a different person at the age of 10, 20, 30, 40.. and so on. Which version gets to be immortal?
Of course, if the brain was a 'soul interface', then that would imply that 'souls' were entities capable of
Re:The Paper Itself: Enjoy! (Score:2, Informative)
and a PDF [nature.com]
Both contain the original drawing of the structure, as done by Crick's wife Odile Speed.
Simon
Re:The Paper Itself: Enjoy! (Score:2)
They put it right at the end, making it seem almost as an afterthought. But in that single sentence, they provide the hypothesis that has driven a large majority of the molecular biology experiments since that paper was published.
-Steve
Amen. (Score:3, Informative)
Read "The Astonishing Hypothesis" to see how Crick could truly make sense of what data is available...