Spiders Argiope aurantia

Tillinghast, E. K., Chase, S., and Townley, M. (1984). Water extraction by the major ampullate duct during silk formation in the spider, Argiope aurantia Lucas./. Insect Physiol. 30, 591-596. 

Enders, F. (1975). Airborne pheromone probable in orb web spider Argiope aurantia (Araneidae). British Arachnological Society News 13 5-6. 

NMR spectrum of the dragline silk of the C/ N-proline-enriched Argiope aurantia spider, which is rich in MaSp2. However, extensive spectral overlap between Pro and other amino acids, with the exception of the Pro C(x, compromises the extraction of exact chemical shift values. Hence, 13c 13c correlation NMR with a medium 50 ms DARR recoupling period was utilized to exploit the connectivity within the Pro residue to yield precise chemical shifts. A chemical shift difference of 5.1 ppm was found, which was indicative of a type II P-tum structure. This structural assignment was further confirmed by using HETCOR experi-... 

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