Abstract
We have found that all E. coli ribosomal proteins strongly bind to an agarose affinity column derivatized with the dye Cibacron Blue F3GA. We have also shown that the capacity to bind the dye is lost when the proteins are organized within the structure of the ribosome or are members of pre-formed protein-RNA complexes. We conclude that the binding of ribosomal proteins to this dye involves specific protein-RNA recognition sites. These observations led us to discover that Cibacron Blue can be used to inhibit in vitro ribosome assembly at any stage of the assembly process. This has allowed us to determine a kinetic order of ribosome assembly.
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