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Table 1 The conserved amino acid and conserved base contacts between the three SSU proteins (S3, S9, S12) and S13 and the 16S RNA.

From: The origin and evolution of the ribosome

16S-0515(ec.0532)-A 1 S03-156-Arg 4
16S-0515(ec.0532)-A 1 S03-159-Gly 4
16S-0515(ec.0532)-A 1 S03-161-Glu 4
16S-1354(ec.1372)-U 2 S09-069-Gly 1
16S-1327(ec.1346)-A 2 S09-107-Arg 2
16S-1328(ec.1347)-G 1 S09-107-Arg 2
16S-1326(ec.1345)-U 1 S09-120-Arg 2
16S-1327(ec.1346)-A 2 S09-120-Arg 2
16S-1330(ec.1349)-A 1 S09-120-Arg 2
16S-0885(ec.0908)-A 1 S12-021-Lys 2
16S-0886(ec.0909)-A 1 S12-021-Lys 2
16S-1468(ec.1491)-G 3 S12-046-Lys 3
16S-0890(ec.0913)-A 1 S12-047-Lys 4
16S-0505(ec.0522)-C 1 S12-049-Asn 1
16S-0510(ec.0527)-G 1 S12-049-Asn 1
16S-0511(ec.0528)-C 1 S12-049-Asn 1
16S-0512(ec.0529)-G 1 S12-049-Asn 1
16S-0501(ec.0518)-C 1 S12-050-Ser 2
16S-0502(ec.0519)-C 1 S12-050-Ser 2
16S-0512(ec.0529)-G 1 S12-050-Ser 2
16S-0503(ec.0520)-A 1 S12-052-Leu 4
16S-0504(ec.0521)-G 1 S12-053-Arg 2
16S-0505(ec.0522)-C 1 S12-053-Arg 2
16S-0506(ec.0523)-A 2 S12-053-Arg 2
16S-0503(ec.0520)-A 1 S12-054-Lys 1
16S-0504(ec.0521)-G 1 S12-054-Lys 1
16S-0505(ec.0522)-C 1 S12-069-Tyr 4
16S-0504(ec.0521)-G 1 S12-072-Gly 4
16S-0505(ec.0522)-C 1 S12-072-Gly 4
16S-0503(ec.0520)-A 1 S12-073-Glu 4
16S-0504(ec.0521)-G 1 S12-073-Glu 4
16S-0888(ec.0911)-U 1 S12-089-Arg 4
16S-0505(ec.0522)-C 1 S12-092-Asp 1
16S-0506(ec.0523)-A 2 S12-092-Asp 1
16S-0887(ec.0910)-C 1 S12-097-Arg 2
16S-0888(ec.0911)-U 1 S12-097-Arg 2
16S-1290(ec.1309)-G 1 S13-088-Arg 2
16S-1207(ec.1226)-C 1 S13-091-Arg 1
16S-1290(ec.1309)-G 1 S13-099-Arg 1
  1. The '1' following the base or amino acid indicates conservation of 99% and '2' better than 90% across all three phylo divisions, while '3' and '4' suggest weak conservation. The 16S coordinates are for 1FJG; those in parentheses are for the E. coli, 1GIXstructure.