Antibodies with catalytic properties can be obtained using stable transitio
n state analogs (TSA) of chemical reactions as immunogens. However only a f
ew of the antibodies generated against a given TSA turn out to be catalytic
. Identifying these catalytic antibodies requires an efficient screening pr
otocol for catalysis, Many of the screening methods developed for assaying
catalytic antibodies turn out to be generally useful for assaying enzymatic
activities with high-throughput.