TY - RPRT TI - Imposing specificity by localization: mechanism and evolvability. AU - M Ptashne AU - A Gann PY - 1998 DO - 10.1016/s0960-9822(07)00508-8 UR - https://pubmed.ncbi.nlm.nih.gov/9818164/ ID - 9818164 ER -