>4b20_B mol:protein length:225 ENDONUCLEASE VMDYRQLHRWDLPPEEAIKVQNELRKKIKLTPYEGEPEYVAGVDLSFPGKEEGLAVIVVLEYPSFKILEVVSERGEITFPYIPGLLAFREGPLFLKAWEKLRTKPDVVVFDGQGLAHPRKLGIASHMGLFIEIPTIGVAKSRLYGTFKMPEDKRCSWSYLYDGEEIIGCVIRTKEGSAPIFVSPGHLMDVESSKRLIKAFTLPGRRIPEPTRLAHIYTQRLKKGLF