ribosomes from cells of streptomyces aureofaciens producing tetracycline antibiotics ( tc-ribosomes ) differ in electrophoretic mobility of ribosomal proteins s2 , s10 and l19 from those of the same strain , where the production of tetracyclines was suppressed by changed cultivation conditions ( c-ribosomes ) .
C0007634
cells
C0035553
ribosomes