A protein having antitumor activity.

摘要

A protein having a polypeptide subunit containing an N-terminal amino acid sequence of Ser-Ala-Ser-Arg-Ala-Leu-Ser- Asp-Lys-Pro-Leu-Ala-His-Val- Val-Ala-Asn-Pro-Gln-Val-Glu-Gly-Gln-Leu-Gln-Trp-Leu. The protein is obtained in substantially pure form at high activity recovery, and is excellent in inducing necrosis of tumors with no toxicity upon the normal tissues of the living body. The protein is thermally stable and can be formulated into pharmaceutical compositions.