TY - RPRT TI - Sequence and structural differences between enzyme and nonenzyme homologs. AU - Annabel E Todd AU - Christine A Orengo AU - Janet M Thornton PY - 2002 DO - 10.1016/s0969-2126(02)00861-4 UR - https://pubmed.ncbi.nlm.nih.gov/12377129/ ID - 12377129 ER -