Evolutionarily mobile modules in proteins

Article Abstract:

The amino-acid blocks that make up proteins move within proteins, between proteins and across different species during evolution. Some researchers believe that gene subdivision into different coding parts occurred fairly recently in terms of evolution.

Analysis, Protein research

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Escandalo in Brazil

Article Abstract:

Collor claims allegations that he stole over $55 million from Brazil and was involved with underworld leader PC Farias while President are untrue. He may soon be put on trial. Interviews with Collor, his brother, and their wives are included.

Political aspects, Interview, Brazil, Political corruption, Collor de Mello, Fernando

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Handcrafted door

Article Abstract:

A cedar frame screen door is designed to have mortise-and-tenon joints for superior mechanical strength. Step-by-step instructions are detailed for cutting the tenons, creating the mortises and pegs, gluing, and finishing touches.

Design and construction, Screen doors, Wooden doors

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