Le 11/09/2011 00:23, Ed Pozharski a écrit : > On Sat, 2011-09-10 at 08:21 +0200, Miguel Ortiz Lombardía wrote: >> A, C and G are RNA nucleotides. T is (mostly) not, its RNA-equivalent >> is >> uridine phosphate, U. >> >> > > Right, that was my suspicion. But I thought that RNA bases would be Xr, > not Xd. Plus, refmac does not complain about missing oxygens.
My understanding is that the Xr/Xd scheme has been dropped from the latest refmac5/coot to comply with the X/DX (and OP1, OP2, prime signs instead of asterisks...) standard from the PDB/NDB. Cheers, -- Miguel Architecture et Fonction des Macromolécules Biologiques (UMR6098) CNRS, Universités d'Aix-Marseille I & II Case 932, 163 Avenue de Luminy, 13288 Marseille cedex 9, France Tel: +33(0) 491 82 55 93 Fax: +33(0) 491 26 67 20 mailto:miguel.ortiz-lombar...@afmb.univ-mrs.fr http://www.afmb.univ-mrs.fr/Miguel-Ortiz-Lombardia
