A lipase gene from a thermophilic Bacillus sp. TG43, whose product showed o
ptimal activity at alkaline pH, was cloned using a lambda expression librar
y. Consensus PCR primers were designed based on a DNA sequence alignment of
the cloned lipase with two other homologous lipases reported in the litera
ture. The consensus primers allowed rapid cloning and expression of several
novel lipases from DNA of both pure cultures of Bacillus and biomass from
thermophilic environmental samples.