Spider silk expert Dr. Randy Lewis discusses spidroins, spider silk production, genetic modification, drug effects on webs, and biomedical applications. They explore spider webs, debunk myths, and touch on the potential of spider silk in various industries.
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Quick takeaways
Spider silk proteins can be produced by genetically modifying organisms like goats, silk worms, and alfalfa for various applications.
Spider silk's unique strength and stretch properties make it valuable for industries including medical and defense.
Researchers found that spiders under the influence of drugs create varied, sometimes disappointing webs, showcasing the impact of substances on spider behavior.
Deep dives
Spider Silk Production from Various Organisms
Spider silk proteins can be extracted from different organisms like goats, silk worms, and alfalfa. By genetically modifying these organisms, researchers can produce spider silk proteins that can be used for various applications.
Potential Applications of Spider Silk
Spider silk can be used for a wide range of applications beyond fibers, including composite materials and adhesives. Its unique combination of strength and stretch makes it a valuable material for industries like medical, defense, and beyond.
Challenges and Future Goals in Spider Silk Research
Researchers aim to bring spider silk products to the market after years of basic science research. Alfalfa is seen as a promising source due to its cost-effectiveness, with potential implications for fields like animal feed production and ethanol conversion.
The Impact of Drugs on Spider Webs
Researchers found that spiders under the influence of drugs like uppers, caffeine, and hallucinogens created scattered, haphazard, and minimalistic webs. Despite their altered states, the spiders believed their webs were impressive, but upon sobering up, many were disappointed with their creations. The study suggests that the impact of drugs on spider web design varies, and researchers attribute this to the lack of knowledge regarding spider nervous systems.
Unique Characteristics of Spider Silk
Spider silk is four times stronger than Kevlar and 10 to 12 times stronger than steel when considering a combination of stretch and strength. The silk's unique properties make it unparalleled in materials produced naturally or synthetically. Additionally, certain spider species produce silk in different colors, such as gold or green, with specific silk variations used for camouflage in egg cases.
Invisible but stronger than steel. Complex architectural marvels. Things that stick to your face. Spiderwebs are much more than just Halloween decor or something to feather dust from your corners. Spider silk expert Dr. Randy Lewis of Utah State University not only coined the word "spidroin" for the proteins comprising the many types of silk, but he is considered one of the foremost experts on the wonders of spiderwebs. Alie visits his lab and chats about how spiders weave them, what the silk is made of, the street value of a spool, future applications of spider silk, transgenic experimentation, best spider movies, worst spider myths and why he deserves an ice cream cake. You'll never (not) see a spiderweb the same.