Zinc fingers function in helping some protein
s 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.