TY - RPRT TI - Transient folding intermediates characterized by protein engineering. AU - A Matouschek AU - J T Kellis AU - L Serrano AU - M Bycroft AU - A R Fersht PY - 1990 DO - 10.1038/346440a0 UR - https://pubmed.ncbi.nlm.nih.gov/2377205/ ID - 2377205 ER -