Please cite:
Schudoma et al.,
Nucl. Acids Res. 38: 970-980.
DOI 10.1093/nar/gkp1010.
'4-4-Internal Loop pdb1yl3FA.n1741-1751
Source: [PDB-id:chain] 1yl3:A (&rarr PDB)
Source: Information CRYSTAL STRUCTURE OF 70S RIBOSOME WITH THRS OPERATOR AND TRNAS. LARGE SUBUNIT. THE COORDINATES FOR THE SMALL SUBUNIT ARE IN THE PDB ENTRY 1YL4.
Source: Compound 23S RIBOSOMAL RNA
FLIPPED INTERNAL
Source: Resolution 5.50 ANGSTROMS.
Position (1736, 1756), (1741, 1751)
Primary structure ('_': anchors) _CCGG_-_CUGG_
Bases with unusual sugar puckers
(Standard: C3'-endo) 		1: C4'-exo, 2: C4'-exo, 3: C2'-exo, 6: C4'-exo
Bases with unusual glycosidic-bond configuration
(Standard: anti) 		None
Tertiary structure: Stacked bases
# Position 1 Position 2 Stacking direction
1 1 2 ↑
2 2 3 ↑
3 3 4 ↑
4 10 11 ↑
5 11 12 ↑
Tertiary structure: Base-pairs
(anchor pairs)
# Position 1 Position 2 Edges Configuration Single?
1 1 2 C/O2' ?
2 1 12 Watson-Crick/Watson-Crick cis
3 3 10 Watson-Crick/Watson-Crick cis
4 4 9 Bifurcated/Watson-Crick cis y
5 5 8 Watson-Crick/Bifurcated cis
6 6 7 Watson-Crick/Watson-Crick cis y
7 8 9 Sugar/Watson-Crick cis y
Downloads Atom coordinates (PDB format)
Contact annotation (MC-Annotate format)
3D Structure Structure Graph
Structural Clusters