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. 2015 Jun 5;43(Web Server issue):W15–W23. doi: 10.1093/nar/gkv543

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© The Author(s) 2015. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Web page for manual input to the R3D-2-MSA server to select nucleotide ranges corresponding to an internal loop from E. coli SSU rRNA (PDB file 2AW7). Upon submission of the request, the server will extract sequence variants from positions in the alignment corresponding to nucleotides 1430–1435 and 1466–1470 in the 3D structure. The input page provides examples for requesting sequence variants of basepairs, hairpin loops, internal loops or multi-helix junctions. Links are provided to display the 2D structure of E. coli SSU rRNA or download the complete sequence alignment in any of three formats.