Glossary for NanoBiotechnology

ubiquitin:
Small, highly conserved protein present in all eucaryotic cells that becomes covalently attached to lysines of other proteins. Attachment of a chain of ubiquitins tags a protein for intracellular proteolytic destruction in a proteasome.

unsaturated:
Describes a molecule that contains one or more double or triple carbon-carbon bonds, such as isoprene or benzene.

Parts of the glossary are from the following book:
Copyright 1983, 1989, 1994 From "Molecular Biology of the Cell" by Bruce Alberts, Dennis Bray, Julian Lewis, Martin Raff, Keith Roberts, James D. Watson. Reproduced by permission of Routledge, Inc., part of The Taylor & Francis Group.