Golden Silk Spider (Nephila clavipes) (IMAGE) RIKEN Caption Spiders produce amazingly strong and lightweight threads made from silk proteins, which can be used to manufacture useful materials. Researchers succeeded in producing the spider silk using photosynthetic bacteria. Credit RIKEN Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.