TY - RPRT TI - Designing substrate specificity by protein engineering of electrostatic interactions. AU - J A Wells AU - D B Powers AU - R R Bott AU - T P Graycar AU - D A Estell PY - 1987 DO - 10.1073/pnas.84.5.1219 UR - https://pubmed.ncbi.nlm.nih.gov/3547407/ ID - 3547407 ER -