Successful approaches in structural manipulation led to a number of compounds with antiviral activities in the low nanomolar range and acceptable pharmacokinetic properties. (thno.org)
And plenty of other animals have a different array of receptors, Li says, from chickens that also lack the sweet gene to catfish that can detect amino acids in water at nanomolar concentrations. (scientificamerican.com)
For stable, yet reversible protein immobilization we have developed tris (nitrilotriacetic acid)(tris - NTA), which binds oligohististidine - tagged proteins with nanomolar affinity due to multivalent interactions (1, 2). (biophysik.uni-osnabrueck.de)