Scientists Crack Silk's Secret 408
AEton writes "Researchers at Tufts University have reportedly discovered the mechanism by which spidersilk is produced. Besides the obvious use as a Kevlar substitute in bulletproof vests, silk has applications in microprocessor production, nanoscale optical fiber, a and any other application requiring strength and flexbility. Scientists have long grappled with the issue of creating silk; artificial silk is inferior to the real stuff, and the spiders can't be farmed (when you put them too close together, they eat each other). The method these Tufts researchers have found makes "strong silk" production feasible; if they can make it economical, the impact on safety equipment alone makes this material a worthwhile investment."
A changing world... (Score:4, Interesting)
Re:A changing world... (Score:4, Funny)
Re:A changing world... (Score:3, Insightful)
Re:A changing world... (Score:5, Insightful)
Obviously, the diamond industry has reason to worry if the fakes are indistinguishable, but I'm not sure what you're talking about a "cult-like anti-scientific religion," that is just silly.
There is nothing wrong with economical silk- after all, how big is the industry, and are the people in it that well off right now? Silk is something with actual applications (diamonds do as well, but not as many). Science marches on and puts people out of work, but at the end of the day, they find another line of work and everyone is better off. The standard of living in the developed world has steadily increased- and most of it is because of science.
Spare me of the doomsday theories.
Re:A changing world... (Score:4, Informative)
Re:A changing world... (Score:3, Interesting)
Whoah. You didn't read the gemesis article, did you? There are two very recent artificial diamond producers only now ready to begin production. One of them is gemisis (gemisys/gemysis/whatever). Rumors are that the 'debeers' that now control the worldwide diamond supply are pretty worried about those recent development. But ironically it is not a taking over of the 'debeers' diamond markets that either of these companies is aiming for. They both are quoted to say tha
Sacrifice a spider-silk goat (Score:5, Funny)
I imagine a bizarre cult of disgruntled former Kevlar workers sacrificing one of the spider-silk goats.
What ever happened with the spider-silk goat and cow experiments anyway? Or is that how they got enough material for the current breakthrough?
Hey! HEY! Stop that! No goatse links!
It's not the same thing, though. (Score:5, Insightful)
On the topic of displaced workers though - there's always going to be a demand for "the real thing". While artificially produced diamonds may be exactly the same as naturally formed ones, for many people they are two entirely different things. It's all a question of perception. As long as people view the two things differently, there will always be a market for the rarer and consequently more expensive natural diamonds.
Re:It's not the same thing, though. (Score:3, Insightful)
Re:It's not the same thing, though. (Score:4, Interesting)
It's the actual structure of the diamond on a molecular level that is too perfect. DeBeers themselves with their absolute mod sophisticated equiptment SUSPECT they will be able to identify them... but there is nothing in existing grading labs that can, and your local jeweler certainly cannot.
But this mute and actually supports what your saying. The diamond market has been artificially kept afloat to this point. Contrary to popular belief diamonds are NOT rare, and I mean the natural ones. DeBeers simply controls the market by making sure all diamonds funnel through them and releasing them very slowly.
In short this is an industry that exists in it's present form with inflated prices only because of a fraud. It's about damn time someone shut them down. Real jewelers have plenty of other items of jewelry they can sell, and there is nothing to stop them from selling diamonds, just not for thousands of dollars. Your corner jeweler won't go out of business because of this, but debeers will and it's about time they do.
Re:It's not the same thing, though. (Score:2, Interesting)
thats a whole other discussion wether it is ethical to engineer goats to make them produce spidersilk...
google search [google.be]
Re:It's not the same thing, though. (Score:4, Interesting)
I have to agree.
There is already a material being produced which is superior to spiders' silk in every way -- stronger, lighter, higher elongation-to-break, and easier to mass produce. It is called ultra-high molecular weight high-density polyethylene. Spectra is one form of the stuff; Dyneema is a superior form.
UM-HDPE is basically the same stuff that garbage bags are made of ("ordinary" HDPE), but the polyethylene chains in it are several tens of thousands of times longer. This was made possible by the discovery of a new process by which to build the PE chains, using a new catalyst (and lots and lots of MAO, which always cracks me up).
UM-HDPE production has been ramping up slowly over the past several years. In time, we should expect it to be fairly commonplace and inexpensive (Dyneema is currently extremely pricey stuff, due to limited production). So cracking the silk "code" is nothing to get riled up about, at least not from a material engineer's perspective. It's a johnny-come-latey. I seriously doubt its production could be ramped up any faster than Dyneema's, and Dyneema has a huge head start.
-- TTK
Re:A changing world... (Score:2, Funny)
Actually, it's a pretty good time to be a pimp. Now if only they could make $5 artificial fur that was as good as the real thing...
Re:A changing world... (Score:4, Insightful)
Re:A changing world... (Score:4, Insightful)
Ever heard of De Beers?
Re:A changing world... (Score:2, Funny)
oh, wait...
Re:A changing world... (Score:3, Insightful)
The industri
Re:A changing world... (Score:3, Interesting)
A good idea which obsoletes a million jobs is still a good idea, imho.
Re:A changing world... (Score:2, Insightful)
i mean, sooner or later the only job left is going to be robot polisher..either everyone who doesn't get that job starves or we find another system for handing the allocation of work... i've always liked r.a. wilsons idea in the schroedingers cat trilogy of offering $5
Re:It's already been done (Score:2)
Re:It's already been done (Score:2, Offtopic)
The islamic world also was able to govern itself without sinking into anarchy, before it was raped by the christian world.
While the islam and it's followers tend to be a little more hot-tempered than christians, the islam is quite peaceful by nature.
The problem with the islam is that recently, too many islamic people have becom
Re:It's already been done (Score:2, Offtopic)
Given GWB's attitude towards science (stem-cell research, genetics, etc.), the fact [cnn.com] that 83% of Americans believe in the virgin birth of Jesus and only 28% percent believe that evolution is valid, and that 58% of the population thinks that in order to be a moral person you have to be a christian, where do you think America is heading right now?
Re:It's already been done (Score:4, Interesting)
>people than all of the "religious" wars in
>history.
Since there were far more people on the earth during "modern" history than there were in the past, this is hardly a relevant point. As a percentage of population killed, they've certainly done no better (or worse) than their religious predecessors. And of course, many of the victims of religion were killed not in wars, but by the zealots in their own nations. From the Spanish Inquisition to the Salem witch trials, religion has been effective at persecuting or slaughtering the innocent within a society, quite apart from any wars between religions or sects.
One could also argue that Soviet-style Communism is as much a religion as Christianity, which sort of negates the argument that these "atheistic" regimes are free from "religion." Replacing one fucked-up, reality-denying philosophy (say, Christianity as it's been practiced traditionally) with another (say, Communism) isn't likely to lead to an improvement in anybody's quality of life.
Re:It's already been done (Score:4, Interesting)
I do not believe in a God that leads my day to day life, or even cares about it. I do not believe in a God that loves us as individuals. I do not believe in a God that sat down one day and created heaven and earth for our benefit.
And when I stop looking at spirituality, I look around me and see organised religion outdoing organised crime in profit margins, ruthlessnes and control. I look at organised religion and see nothing but nepotism, and little evidence of this assumed morality. I see massive coverup of child abuse. I see lives destroyed in the name of the pope. I see people going hungry, without help from the churches, that can seriously afford it. I see a pope, buying a million dollar Bentley, so he can drive around in safety, while his followers slaughter each other for ridiculous reasons. I see an organised fostering of hate, a repressive regime, that actively discourages discovery of the world around us, an inward-looking philosophy, that frowns on exploration. I see a cult. A cult more concerned with control then with anything else.
Irrespective of my lack of beliefs in a traditional sense, I live my life, and teach my son to live his, along a moral code that requires no deity to enforce: Be nice to others. At the end of the day, that is what it is all about.
Re:It's already been done (Score:3, Insightful)
Your moral code is "be nice to others". How is that derived from atheism? Another athiest seems to advocate "selfish pragmatism." Whose code is right? Suppose you come across a person whose moral code is "survival of the fittest". On what basis will you say that he
Aaww (Score:4, Funny)
Why can't everybody be nice to each other ??
Re:Aaww (Score:2)
Life feeds on life.
Two very large spiders in my back yard -- Feeding or Fucking? [jacefuse.com] You decide.
Re:Aaww (Score:2, Offtopic)
Eh? (Score:5, Interesting)
Am I getting dumber, or are these science article getting more opaque?
"becuase of proteins with various properties" me arse.
Re:Eh? (Score:2)
Why is it more capable than what man can do it a lab? Answer that and print your own money...
Re:Eh? (Score:4, Insightful)
Re:Eh? (Score:2)
Re:Eh? (Score:5, Insightful)
So wait a few years (at most a decade) and artificial spider silk will be stronger than natural. After a decade more we will have not only stronger, but ligher, more flexible, cheaper and overall better threads than any spider will ever have. Evolution is too slow and we gave it a huge start - billions of years. And we are gaining on it now.
Re:Eh? (Score:3, Interesting)
Re:Eh? (Score:2)
Re:Eh? (Score:5, Informative)
"Dragline silk [a kind of silk all spiders make] is a composite material comprised of two different proteins, each containing three types of regions with distinct properties. One of these forms an amorphous (noncrystalline) matrix that is stretchable, giving the silk elasticity. When an insect strikes the web, the stretching of the matrix enables the web to absorb the kinetic energy of the insects flight. Embedded in the amorphous portions of both proteins are two kinds of crystalline regions that toughen the silk. Although both kinds of crystalline regions are tightly pleated and resist stretching, one of them is rigid. It is thought that the pleats of the less rigid crystalline regions not only fit into the pleats in the rigid crystals but that they also interact with the amorphous areas in the proteins, thus anchoring the rigid crystals to the matrix. The resulting composite is strong, tough, and yet elastic."
Re:Eh? (Score:3, Insightful)
who wants sticky clothing? yuk.
Re:Eh? (Score:4, Interesting)
Good question, but as there are lots of elastic yet non-sticky things out there, I would think that it should be possible to make non-sticky clothing out of this stuff.
Maybe the spiders can decide whether or not to add an extra "stickiness" protein to the silk as they extrude it, so they can make non-sticky support strands for their webs. That way they could walk around without getting themselves stuck---or maybe they have some weird foot-based non-stick thing.
Also, is silk from silkworms sticky?
OK, I don't know any of the answers, so those are just a few thoughts on the topic.
Just imagine, if every super-bouncy ball were also super-sticky...
How come spiders don't get stuck? Easy. (Score:4, Informative)
Nope, you had it right the first time. Some strands of a spider's web are sticky, some are not. It's not for "extra support for the web" as it is "it's nice to be able to walk around without sticking to my own house." The spiders know which strands are which. And if they have to step on a sticky strand, they just pull themselves loose.
Weapon against crime? (Score:4, Funny)
DMCA (Score:4, Funny)
aaww no (Score:3, Funny)
Correct me if I'm wrong... (Score:2, Informative)
Spider farming (Score:5, Funny)
*shudder*
Re:Spider farming (Score:5, Interesting)
Again, this is all AFAIK, based on stuff I heard a long time ago.
Re:Spider farming (Score:2)
Must be distantly related to cats...
Re:Way OT (Score:2, Funny)
Re:Spider farming (Score:3, Interesting)
We also farm silkworms for their sort of silk. So why not spiders?
Re:Spider farming (Score:5, Informative)
http://us.expasy.org/spotlight/articles/sptlt02
"Spider silk is 40 times finer than human hair and right up to World War II, it was used for crosshairs in optical devices such as microscopes, guns and bomb-guiding systems. In fact, though crosshairs are now etched or made with metal filaments, some military facilities still keep a domesticated black widow spider as a silk provision for old instruments. To this day, Australian aborigines use the silk of a giant spider for fishing lines."
Knowing how to collect Black Widow silk is essential if you are repairing and restoring old microscopes and other optical equipment. They are not aggressive, and live a long time, and are content in a very small container.
Re:Spider farming (Score:2)
Re:Spider farming (Score:5, Interesting)
They aren't really "domesticated", just captured in the wild and kept in a container, such as a terrarium. A couple of crickets a week keeps them fed. There is one spider farm locally, collecting venom for research and anti-venin production. They use plastic refrigerator containers, and have well-sealed buildings. They have a small group of collectors - instead of raising the spiders, they buy mature females as needed.
I have an old microscope repair manual that explained how one gets the silk from the spider ... if I recall you put the spider in a rather large container, with a tiny shelter at the top. They will run a long strand from the shelter down to the bottom of the container and make their messy trap web there, of sticky strands. You harvest the long strand on a loop of wire and then lay the strand onto the glass reticule, usin gan alignment jig. It's sticky enough to cling to the glass.
Re:Spider farming (Score:4, Interesting)
Besides which, Black Widows arn't as danagerous as most people think. Sure, they can kill a small child or an old person. But the most a black widow bite will do to a fit person is make them feel cramps, cold sweats, and nausia. You should still see a doctor, but it's unlikely that you are in any danger. There has not been a fatal Black Widow bite in the USA for over 10 years.
The brown recluse, on the other hand, is a pretty nasty North American spider. I still have scars on my leg from a bite. It is NOT fun having your flesh dissolve, believe me!
Re:Spider farming (Score:2, Informative)
Different silks? (Score:4, Interesting)
Re:Different silks? (Score:4, Informative)
I don't, but google [google.com] does.
Re:Different silks? (Score:2)
Boycott Google!
Boycott Google? No (Score:2, Insightful)
Perhaps we should write to your congressperson or favorite supreme justice about how you think the DMCA is bad or unconstitutional (respectively).
You can't blame Google for following a crooked law.
Re:Different silks? (Score:3, Funny)
Re:Different silks? (Score:3, Informative)
Business potential! (Score:4, Funny)
Next up, Seth Industries & Automobiles! Silksteel cars with diamond windshields and pistons and of course a dimensional warp generator [museumofhoaxes.com]!
Re:Business potential! (Score:2)
Incidentally; some decades ago Henry Ford prototyped a car all of whose structural members and body panels were made of hemp-derived plastics. Some engines being prototyped for (and possibly used in by now?) racing have a carbon fiber "block" (it's not really a block now is it) with metal sleeves to build the cylinders. I can't wait for the diamond coatings, and the diamond nuts and bolts, though. Imagine never snapping off another bolt head and having to extract a broken bolt from the engine block... ahh.
Re:Business potential! (Score:3, Informative)
-cp-
One unfortuate side effect... (Score:5, Funny)
This is old (Score:2, Interesting)
Of course, I've not read the article linked above.
http://www.exn.ca/Stories/2000/06/19/56.asp
I can't find it now, but they talked last year about how they'd figured out how the spiders assembled the strands and that they'd applied that to a industrial method to pull the unassmbled silk through a small hole and it would self-assemble.
Finally! (Score:5, Funny)
What an appropriate university name ;) (Score:2)
Gee, Tufts University? Now THAT is a truly appropriate place for them to have made such a breakthrough discovery in the science of spider silk. ;)
Spider Farming (Score:5, Funny)
I don't suppose it occured to any of these rocket scientists to put the spiders in seperate cages.
...or better yet, genetically modify the spiders to be nice! Perfect plot for a B-grade movie with LL Cool J; the spiders are only PRETENDING to be nice! Mwuahahahaha...
Re:Spider Farming (Score:4, Funny)
"Cage #10000000, check."
"Cage #10000001, check."
"Cage #10000002, check."
"Cage #10000003..."
"Oh, shit! The spider in cage #10000003 is missing! Lock down the system! Call the national guard! Help! Help!"
Lots of spiders, lots of little cages, very little practicality :) Even the egg industry packs multiple chickens to a cage (despite adverse consequences) and they're a lot bigger than these guys.
Re:Spider Farming (Score:2)
That's because you can blunt beaks, but what the hell are you going to do about fangs?
Re:Spider Farming (Score:2)
Re:Spider Farming (Score:2)
Re:Spider Farming (Score:2)
Unfortunately, "B" in "B movies" nowdays stands for Blockbuster
Now if only they could store electricity (Score:4, Interesting)
As advanced as we think we are, it takes the discovery of how to do what seems like the mundane of how to make diamonds and silk to realize that we have such a long way to go.
We still can't store electricity efficiently.
Re:Now if only they could store electricity (Score:4, Funny)
But my cat seems to be distressingly good at it.
KFG
Re:Now if only they could store electricity (Score:3, Interesting)
Do you mean storing charge? We have capacitors.
Do you mean storing energy in a form that will easily produce electricity? We have batteries.
Electricity is moving electrons. You can't really store it, just as you can't really store wind.
Another Application (Score:5, Interesting)
Re:Another Application (Score:2)
Re:Another Application (Score:2, Informative)
Re:Another Application (Score:4, Funny)
-- Commissioner Pravin Lal, "U.N. Scientific Survey", on the discovery of Silksteel Alloys
In one moment, Earth; in the next, Heaven.
-- Academician Prokhor Zakharov, "For I Have Tasted The Fruit", on the construction of the Space Elevator
Unfortunately, Silksteel Alloys are not sufficient to construct the space elevator. That calls for Super-Tensile Solids, which is quite a lot more advanced...
Farming Spiders (Score:4, Interesting)
hey, not so fast.
check out this cbc article [www.cbc.ca] and click through to the photo gallery to get really creeped out.
that's one whole lotta silk. i'd still like to know who/what they ate to do that. and i'd really, really like to know what biochem outfit owns land nearby.
Cracked? (Score:2, Funny)
spider silk is _not_ the same as SiLK (Score:5, Informative)
(aromatic hydrocarbon) made by Dow Chemicals and used by IBM and other chip companies as an insulator between the multiple layers of wires on a chip. Silicon Low-K = SiLK
Excerpts from SCO press release on the subject (Score:4, Funny)
In a move considered to be brilliant in the business world, SCO bought the patents on silk production from God in 2000 for an undisclosed sum. "We've been looking to leverage those patents ever since" said McBride.
Right now, SCO isn't planning on suing individual spiders, although they won't rule out the possibility. "We've considering going after some of the nuisance species, such as brown recluses and black widows, first," said Chris Sontag. "We've been warned by our attorneys that doing such would expose us to the possibilities of bites and nasty wounds, so it's really something we don't want to do right now."
Eric Raymond, president of the Open Silk Initiative, says that God lost protection on His silk production techniques by creating so many different species that use the intellectual property and not entering into any official licensing agreement with them. "It's a little late to be worrying about that now", said Raymond. A 1993 lawsuit regarding silk production methods also cast doubt on the validity of the patents.
Meanwhile, some spiders have openly questioned Raymonds repeated assertions that he represents them or their opinions in these matters.
Forget the bullet-proof vests! (Score:5, Funny)
Re:Forget the bullet-proof vests! (Score:2)
What about the goat milk spider silk? (Score:5, Interesting)
I understand from the article that they've figured out how strong silk is actually produced, which should give them a heads-up on making a mechanical/chemical process to do all this artificially. It should be pointed out, though, that there are already means for production of non-artificial spider silk currently, which the article seems to have missed.
I farm spiders... (Score:4, Funny)
I have this piece of wood in the back yard covered with spiders. Guess they should have called me...
Cannot decide what to be afraid of (Score:3, Interesting)
Poor spiders. When in close confines, do you diagnose then with Arachnapobia or Autophobia [geocities.com] (fear of yourself)?
Free the oppressed! (Score:2, Funny)
Wait a second, I have arachnaphobia, STICK IT TO EM!
Robert A Heinlein (Score:4, Interesting)
worms.. (Score:3, Interesting)
Spiders CAN be farmed (Score:3, Interesting)
The web from the black-widow spider was used to make the cross-hairs in their scopes. During the prime of their business, Redfield scopes were some of the very best ever made. All thanks to the silk from the black-widow spider farm.
No you cant become spiderman (Score:2, Funny)
Re:No you cant become spiderman (Score:2)
Re:Spider man (Score:2)
Re:Spider Silk Suspension Bridge (Score:2)
Even if you would find a material that would protect it for a while, imagine the cost to keep it coated... iron may rust, but it doesn't degrade as fast as proteine... As fas as I know organisms really love the stuff.
So you will not only have to battle passive degration but hungry organisms that will chew down your structure as well.
Re:Spider Silk Suspension Bridge (Score:2)
I'm guessing you don't live in South Florida.
Re:Bulletproof vest? (Score:5, Insightful)
And, given the time that life has had to develop, it is far from amazing that "natural" materials can be strong. Life is a bit like an arms race that has been going on for over a billion years. The development of advanced materials by human beings using brainpower and technology is just an extension of the normal mechanisms of evolution.
Wood (for instance) is chemically and structurally similar to many advanced composite plastics, and the strongest woods are as strong as structural plastics. It just shows that there is a clever way of making strong, resilient materials and that you can do this by natural selection of biochemistry or you can do it by technology. It's interesting, but not amazing.
Re:How about gold? (Score:2)
Even if it were possible to create artificial gold that you could competetively price against 'mined' gold, there will always be an intrinsic value to gold nuggets and specimens. [alaska-freegold.com]
I have often thought that if I came up with a way to cheaply extract gold from seawater, or find large d
Re:you're wrong (Score:3, Informative)