Medical Definition of Photoaffinity labelling

1. A technique for covalently attaching a label or marker molecule onto another molecule such as a protein. The label, which is often fluorescent or radioactive, contains a group that becomes chemically reactive when illuminated usually with ultraviolet light) and will form a covalent linkage with an appropriate group on the molecule to be labelled: proximity is essential. The most important class of photoreactive groups used are the aryl azides, which form short lived but highly reactive nitrenes when illuminated. (31 Dec 1997)

Lexicographical Neighbors of Photoaffinity Labelling

photinias
Photinia arbutifolia
photism
photism
photisms
photo
photo-
photo-electrotype
photo-engraving
photo-epinasty
photo-offset
photo-offset printing
photo-patch test
photoablation
photoactinic
photoaffinity labelling (current term)
photoaffinity labels
photoallergic sensitivity
photoallergy
photoautotroph
photoautotroph
photoautotrophic
photoautotrophs
photobacteria
photobacterium
Photobacterium harveyi
Photobacterium phosphoreum
photobiologic
photobiological
photobiologies

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