Patent ID: 11857622
Assignee: PFIZER INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 24:
25. The mutant according to claim 1, wherein the mutant comprises a cysteine (C) at position 217 (217C) and at position 589 (589C), a cysteine (C) at position 524 (524C) and at position 684 (684C), and a serine (S) at position 675 (675S), and wherein the mutant is selected from the group consisting of:
(1) a mutant comprising the amino acid sequence of SEQ ID NO: 259; and
(2) a mutant comprising an amino acid sequence that is at least 97%, 98% or 99% identical to the amino acid sequence of SEQ ID NO: 259.