Amino acid sequence homology in 30 S ribosomal protein S19 from Bacillus stearothermophilus and Escherichia coli.

The amino therminal sequence of 30 S ribosomal protein S19 from Bacillus stearothermophilus has been determined. Comparison with the corresponding ribosomal protein from Escherichia coli reveals substantial sequence homology in the first thirty residues and provides further evidence for conservation of genetic information which specifies the primary structure of ribosomal proteins in these taxonomically dissimilar organisms.