How can I create a multi-strand xrna figure from old style XRNA postscript (*.ps) file?
• Download u1u2_ref_u6u4_homsap.ps into a suitable work area and read into XRNA. This layout and basepair information is from the Manny Ares lab, UCSC. At this point the structure is one rna strand without any basepairing. Print out or somehow view the postscript in u1u2_ref_u6u4_homsap.ps for reference for the base pairs. • Do an initial write out of a XRNA input file by using the “Import/Export” tab and the “Write XRNA I/O file” button. The file name will be initialized to the prefix name of the “*.ps” file but with a “.xrna” extension. Change the prefix name if desired. From now on selecting the “Update XRNA I/O file” button in the “Main Controls:” panel will update this new XRNA input file. • In the “Edit” panel, using the “list nucs” constraint mode, pick and name the rna strands U1,U2,U4 and U6 by doing the following: • Using “list nucs” and the right mouse button first pick nuc 446 then nuc 609 and name the grouping U1 by filling in the text field next to the button labeled “Add
