TY - GEN AU - Yarus,M TI - How many catalytic RNAs? Ions and the Cheshire cat conjecture SN - 0892-6638 PY - 1993///0223 KW - Catalysis KW - Metalloproteins KW - metabolism KW - Metals KW - RNA, Catalytic KW - chemistry N1 - Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.; Review UR - https://doi.org/10.1096/fasebj.7.1.8422972 ER -