... ), along with two foundation prey species (mussels, Mytilus californianus ; barnacles, Balanus glandula ), inhabiting rocky, wave-swept shores. Each prey species is known to secrete either a 29.6 kDa (named ‘KEYSTONEin’) or a 199.6 kDa (named ‘MULTIFUNCin’) glycoprotein as a contact-chemical cue. Here...

...Sarah D. Stellwagen; Brent D. Opell; Kelly G. Short Sticky viscous prey capture threads retain insects that strike araneoid orb-webs. The threads' two axial fibers support a series of glue droplets, each featuring a core of adhesive viscoelastic glycoprotein covered by an aqueous solution. After...

...Brent D. Opell; Shannon E. Karinshak; Mary A. Sigler SUMMARY Viscous threads that form the prey capture spiral of araneoid orb-webs retain insects that strike the web, giving a spider more time to locate and subdue them. The viscoelastic glycoprotein glue responsible for this adhesion forms...

...Brent D. Opell; Shannon E. Karinshak; Mary A. Sigler SUMMARY The prey-capture threads found in most spider orb webs rely on viscous droplets for their stickiness. Each droplet is formed of a central mass of viscoelastic glycoprotein glue surrounded by an aqueous covering, both of which incorporate...

... a thread is flattened on a microscope slide a small, opaque granule can usually be seen within each droplet. These granules have been thought to be the glycoprotein glue that imparts thread adhesion. Both independent contrast and standard regressions showed that granule size is directly related to droplet...

... of the core polypeptide was determined and polyclonal antibodies were raised against both the purified glycoprotein and the peptide. Immunoblots of unfractionated soluble extracts taken at various times post-molt illustrated that the anti-peptide antibody recognized several polypeptides with electrophoretic...

... pulmonate snail Helisoma duryi (Wetherby) induces the secretion (release) of perivitelline fluid. The major protein component of the perivitelline fluid of Helisoma duryi is a native 288 kDa glycoprotein that is secreted around individual eggs and serves as an important source of nutrients...

... in polar fishes. 20 08 1982 19 01 1983 © 1983 by Company of Biologists 1983 Antifreeze glycoprotein teleost Most antarctic fishes synthesize a group of eight glycopeptides that possess unique antifreeze properties ( DeVries & Wohlschlag, 1969 ; DeVries & Lin...