SSU Protein 3P 3P2O In Crystal? 1 LSU Protein 3P 3P2O In Crystal? 1
S1 - - No 2 L1P + + No 4
S2 + + Yes L2P + + Yes
S3 + + Yes L3P + - Yes
S4 + + Yes L4P + - Yes
S5 + + Yes L5P + + Yes
S6 - - Yes L6P + - Yes
S7 + + Yes L7AE + - Yes
S8 + + Yes LPO (L10P) + - No
S9 + + Yes L10E (L10AE) + + Yes
S10 + + Yes L11P + + No 4
S11 + + Yes L12A (L7/L12) + - No
S12 + + Yes L13P 5 + - Yes
S13 + + Yes L14E 5 - - No
S14 + - Yes L14P + - Yes
S15 + - Yes L15E - - Yes
S16 - - Yes L15P + - Yes
S17 + + Yes L18E - - Yes
S18 - - Yes L18P + + Yes
S19 + + Yes L19E - - Yes
S20P - - Yes L21E - - Yes
S21 - - No 3 L22P + + Yes
S22 - - No L23P + + Yes
LTRA - - No L24E - - Yes
THX - - Yes L24P + + Yes
        L29P + - Yes
        L30E - - No
        L30P + - Yes
        L31E - - Yes
        L32E - - Yes
        L34E - - No
        L35AE - - No
        L37E - - Yes
        L37AE - - Yes
        L39E - - Yes
        L40E - - Yes
        L41E - - No
        L44E - - Yes
        LX - - No

1 The crystal structures are a bacteria (T. thermophilus, 1FJG) for the SSU and an archaea (H. marismortui, 1FFK) for the LSU.

2 S1 was removed from the 30S subunit before crystallization.

3 S21 is not found in T. thermophilus.

4 Proteins L1P and L11P were modelled onto the structures for spacial representation.

5 P and E represent prokaryotic and eucaryotic ribosomal proteins respectively.

Conservation based on website http://geta.life.uiuc.edu/~nikos/Ribosome/rproteins.html