Please cite:
Schudoma et al.,
Nucl. Acids Res. 38: 970-980.
DOI 10.1093/nar/gkp1010.
RLooM: RNA Loop Modeling based on homology and geometric constraints - Loop Database
Current Database Version 12-19-08 (sion)
Browse Database
Hairpins (13,085) Single Strand Segments (46,361) Internal Loops (17,133) Multiloops (5,756)

Hairpins ordered by length

Length #structures
10 266
11 222
12 167
13 303
14 161
15 348
16 113
17 51
19 166
3 291
4 3,811
5 1,780
6 1,487
7 1,787
8 1,097
9 889
Small sets (size < 50)
18 (19) 20 (5) 21 (5) 22 (10) 23 (29) 24 (14) 25 (5) 26 (8) 27 (2) 28 (2) 29 (2) 30 (11) 31 (5) 32 (2) 33 (1) 35 (3) 36 (3) 38 (2) 40 (2) 42 (2) 46 (2) 47 (1) 55 (1) 57 (2) 63 (1) 66 (3) 74 (1) 75 (1) 76 (1) 82 (1)
- or -

Sequence-based queries may include NC-IUB ambiguity codes. Internal loops and multibranched loops can be searched by separating the individual loop segments with a '-' character.



Single strand search:




For a query sequence of N bases, the input range is [0,N]. The default value of 0 will be used when ambiguity codes are present in the query sequence or the input is negative. Similarly, N will be used if the input is larger than the length of the query sequence.

- or -

Enter a 4-character pdb id. The search may be restricted to an individual chain, by attaching ':chain-id' (e.g., 2tra:A), with '%' matching any chain.

- or -




Concerning the following check box please see also Privacy Policy, section C.2