Patent ID: 9629995
Date: 2017-04-25
CPC Classifications: A61B,A61N,C07K,G01N,Y10T

Claim:
1. A eukaryotic cell membrane comprising at least one stable protein 1 (SP1) ring-like polypeptide, wherein the at least one ring-like polypeptide is not a membrane protein and has an amino acid sequence selected from the group consisting of the wild type SP1 polypeptide amino acid sequence of SEQ ID NO:1, a polypeptide having the amino acid sequence of SEQ ID NO:2, a polypeptide having the amino acid sequence of SEQ ID NO:3, a polypeptide having the amino acid sequence of SEQ ID NO:4, a polypeptide having the amino acid sequence of SEQ ID NO:5, a polypeptide having the amino acid sequence of SEQ ID NO:6, and a polypeptide having the amino acid sequence of SEQ ID NO:7.