... GSTs in insects [2]. The majority of GSTsare in the Delta and Epsilon classes, and the remain-ing enzymes are in the Omega, Sigma, Theta and Zetaclasses. The German cockroach (Blattella germanica)isaneconomically ... PointRichmond, CA, USA).Amino acid sequencingEdman degradation, performed by Proteos, Inc. (Kalama-zoo, MI, USA), was used to determine the amino acid sequence of 20 N-terminal residues. The amino acid sequence ... obtained by Edman degradation and LC ⁄ MS ⁄ MS analysis of the purified BgGSTD1 werecrucial for the isolation of cDNA. The N-terminalamino acid sequence provided essential information toindicate...