RIBOSOME, RELE, NUCLEASE, REPRESSOR, RIBONUCLEOPROTEIN, RIBOSOMAL PROTEIN, RNA-BINDING, RRNA-BINDING, TRANSLATION REGULATION, TRNA-BINDING, METHYLATION, METAL-BINDING, ZINC STRUCTURE OF RELE NUCLEASE BOUND TO THE 70S RIBOSOME (PRECLEAVAGE STATE; PART 2 OF 4) 3KIR