Zinc fingers function in helping some
proteins that bind to
DNA recognize that
DNA. A zinc finger is a specialized
protein group that is characterized by a single
zinc atom linked to four
cysteine residues or two
histidine residues and two cysteine residues holding that part of the
polypeptide in a finger-shaped loop.
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.