Nucleic acids for single-domain antibodies with thermal stability under cytoplasmic expression

摘要

A nucleic acid encodes a single-domain antibody (sdAb) is produced by causing a bacteria to express the sdAb into cytoplasm of the bacteria, wherein the sdAb is expressed as a fusion protein with the acid tail of α-synuclein. In embodiments, the protein is free of a periplasmic location tag. Such antibodies have the unexpected ability to refold after thermal denaturation.