Figure 2. MRPP3 is inactive.
(A) Ribbon representation of the overall structure of MRPP3-C and PRORP1. For MRPP3-C, the PPR domain, the center domain and the metallonuclease domain are colored purple, green and gold, respectively. (B) in vitro cleavage assays with the human mitochondrial tRNAIle precursor. (C) in vitro assays with 5 mM Mg2+, Mn2+ or EDTA. (D) Purity of the proteins used in the in vitro cleavage assays. Full-length gels are presented in Supplementary Figure S2.