Patent ID: 7700725

Claim:
An isolated protein having the sequence of SEQ ID No: 29 except that the protein has a a substitution selected from the group consisting of: Asn replaced by Arg at position 31; Asn replaced by Ser at position 36; Ser replaced by Leu at position 38; Arg replaced by Cys at position 49; Thr replaced by Ile at position 62; Ser replaced by Pro at position 65; Gln replaced by Leu or Pro at position 66; Gly replaced by His at position 67; His replaced by Gly at position 68; Phe replaced by Asp at position 70; Gln replaced by Trp or Tyr at position 75; Trp replaced by Cys at position 80; Tyr replaced by His at position 85; Pro replaced by Ser at position 90; Tyr replaced by Ala at position 91; Ala replaced by Thr at position 98, and combinations thereof.