CRW: A Story - Manuscript Table 6

Last modified on 14 July 2000.


Table 6. A-motif: A sites in 16 S and 23 S rRNA a.

Position b Percent A c Predicted Structure Motifs d Loop e Position Percent A Predicted Structure Motifs
Hairpin LoopsInternal Loops
16 S rRNA16 S rRNA
84561 5151100 
101694A, UGNRA17494A, GA
145352 UNCG282100A
389 +100A
23 S rRNA48298A, GA
199100 448799A, GA, E
54859 4535100 
57476U8715100A, GA
61675 5*1306100A, GA
117662 4140899A
191893 7148399A, GA
2478100A7*1499100 
270599 4*
2757100A11*23 S rRNA
279956 363 +56 
2826100 791 +89 
286096A, UGNRA10399A
20799A, GA, E
Multi-Stem Loops1050100 
16 S rRNA141995A, GA
16100A 1664 +100 
315 +100A 1689100A, GA, EL
338 +99A 172362 
36665  174553 
49599  1802100A, GA
546 +51  1885 +98 
864100U 2005 +85A
983100A 2327 +100A
994100  2614100 
1101100  2657 #100A, GA, E
1157100A, GA 269068 
1191100  
1339100  Bulge Loops
1349100A, GA, E 16 S rRNA
1398100A 55 +100 
6594 
23 S rRNA130 +100 
5299A, GA 20583 
73100  397 +100 
9481  595 +79BT
149 +95A 1042 +55 
233100GA 1055100 
27092  1196 +99 
34099A, GA, EL 1227 +100 
41298  1394 +100 
432100  
46099A, GA, E 23 S rRNA
670100  443 +100 
990100  739 +61BT
1103 +100A 896 +99 
1384100  927 +89 
160399  1819100 
1829100  1981 +99 
204284  2051 +61 
2062100  2873 +100 
2171 +100U 2879 +98 
2173 +100A, GA, U 
2346100A, GA 
235898A 
2835100A 

a rRNA positions have an A motif in more than 50% of the bacterial sequences and are indicated in yellow on Figure 5. b The position number is the nucleotide at the 3’ loop end, at the loop-helix junction; +, the nucleotide prior to this position is base-paired; #, Sarcin/Ricin loop. c More detailed information is available at http://www.rna.icmb.utexas.edu/ANALYSIS/A-STORY/. d A, AA.AG@helix.ends; BT, base triple; E, E loop; EL, E-like loop; GA, tandem G:A; PK, pseudoknot; U, U-turn (See Discussion). e Hairpin loop size and special characteristics: GNRA, tetraloops (Woese et al. 1990) occur in more than 70% of the bacterial rRNA sequences; *, unusually stable G:A or U:U first mismatch.