Patent ID: 7125556

Claim:
An isolated haemocyanin polypeptide comprising at least one amino acid sequence recombinantly expressed in a suitable host cell and selected from the following group: SEQ ID NO:40 (partial KLH1 domain b), SEQ ID NO:41 (KLH1 domain c), SEQ ID NO:42 (partial KLH1 domain d), SEQ ID NO:43 (partial KLH1 domain e), SEQ ID NO:69 (partial KLH1 domain b′), SEQ ID NO:70 (KLH1 domain e′), SEQ ID NO:71 (KLH1 domain f), SEQ ID NO:72 (KLH1 domain g), SEQ ID NO:73 (KLH1 domain h), or a sequence that shows at least 90% identity to one of the amino acid sequences according to SEQ ID NOs 69–73 or 40–43 over a partial region of 90 amino acids, wherein the glycosylation pattern is different from naturally occurring KLH from Megathura crenulata.