Patent ID: 7125557

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:44 (KLH2 domain b), SEQ ID NO:45 (KLH2 domain c), SEQ ID NO:46 (partial KLH2 domain d), SEQ ID NO:47 (KLH2 domain g), SEQ ID NO:48 (partial KLH2 domain h), SEQ ID NO:74 (KLH2 domain b′), SEQ ID NO:75 (KLH2 domain c′), SEQ ID NO:76 (KLH2 domain d′), SEQ ID NO:77 (KLH2 domain e), SEQ ID NO:78 (KLH2 domain f), SEQ ID NO:79 (KLH2 domain g′), and SEQ ID NO:158 (partial KLH2 domain h), or a sequence that shows at least 90% identity to one of the amino acid sequences according to SEQ ID NOs 44–48, 74–79 and 158 over a partial region of 90 amino acids, wherein the glycosylation pattern is different from naturally occurring KLH from Megathura crenulata.