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Web glue key among 'green' adhesives

disclaimer: image is for illustration purposes only
by Staff Writers
Laramie, Wyo. (UPI) Dec 24, 2009
A sticky compound in spider webs could lead to the development of a new generation of non-petroleum adhesives and glues, scientists in Wyoming said.

Much research has been conducted on spider web silk, which rivals steel in strength, but comparatively little is known about the glue that coats the silk, said Omer Choresh, a microbiologist at the University of Wyoming.

Studies suggest spider web glue ranks among the world's strongest biological glues and could play a key role in replacing petroleum-based adhesives, Choresh said in a recent issue of the journal Biomacromolecules.

Choresh and his team analyzed web glue from the golden orb weaving spider and identified two new glycoproteins produced from opposite strands of the same DNA, the university said in a release Tuesday.

The challenge now is to clone genes related to the glue for large-scale production of biobased, environmentally friendly adhesives, Choresh said.

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China starts building bridge linking Hong Kong, Macau
Beijing (AFP) Dec 15, 2009
China on Tuesday kicked off construction on one of the world's longest bridges linking southern Guangdong province to Hong Kong and Macau, a move seen to boost economic ties, state media reported. The Y-shaped Hong Kong-Zhuhai-Macau Bridge, which Chinese officials presented as "the longest sea-crossing bridge in the world", spans nearly 50 kilometres (30 miles), the Xinhua news agency said. ... read more

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