The expansion of this gene family concomitant with the morphological differentiation of the silk glands has been proposed as the explanation for the evolution of novel silk functions [ 28, 29, 33, 44].
All our tests were performed at strain rates common in biomechanical research, but relatively slow compared to how silks function in nature, when stretched suddenly by flying insects.
Our transcriptome enabled us to address questions about the extent to which silk gland functions evolved through gene family evolution.
The results suggest that silk threads can function as more than just a safety line; they can stabilize a spider's body during a jump and prepare them to stick the landing.
Additional gene trees were estimated for families of UATs that aligned to genes previously known to have silk gland-specific functions including spidroins, Aggregate gland Spider Glue 2 (andG2), Aggregateglandgland Silk Factor 2 (asSF2) as determined through BLASTX.
Visitors on the official tour would also pass by a functioning silk factory operations in one of the underground staff meeting rooms of the complex, and be given a demonstration of the process of obtaining silk from silkworm cocoons, and a chance to buy souvenirs at a tourists' shop operated by the state-owned Qianmen Arts and Crafts Center and the China Kai Tian Silk Company.
Spiders (Araneae) use silk throughout their lives for functions such as prey capture, sperm webs, egg cases, safety draglines, and dispersal [ 1].
Silk degradation was a function of molecular weight and concentration when silk was stabilized by water annealing (low beta-sheet content).
This article initially focuses on the structure and function of silk proteins produced naturally by silkworms and spiders, followed by the biological and technical processing of silk proteins into a variety of morphologies (including capsules, fibers, films, foams, gels and spheres).
