Hi all, As per Justin's suggestion , I have created a rtp entry for primed THY residue..which is like this ..
[ DT5P ] [ atoms ] H5T HO 0.44220 1 O5' O -0.63180 2 C5' CT -0.00690 3 H5'1 H1 0.07540 4 H5'2 H1 0.07540 5 C4' CT 0.16290 6 H4' H1 0.11760 7 O4' OS -0.36910 8 C1' CT 0.06800 9 H1' H2 0.18040 10 N1 N* -0.02390 11 C6 CM -0.22090 12 H6 H4 0.26070 13 C5 CM 0.00250 14 C7 CT -0.22690 15 H71 HC 0.07700 16 H72 HC 0.07700 17 H73 HC 0.07700 18 C4 C 0.51940 19 O4 O -0.55630 20 N3 NA -0.43400 21 H3 H 0.34200 22 C2 C 0.56770 23 O2 O -0.58810 24 C3' CT 0.07130 25 H3' H1 0.09850 26 C2' CT -0.08540 27 H2'1 HC 0.07180 28 H2'2 HC 0.07180 29 O3' OS -0.52320 30 P P 1.16590 31 O1P O2 -0.77610 32 O2P O2 -0.77610 33 O3P O2 -0.77610 34 [ bonds ] O5' P O5' C5' C5' H5'1 C5' H5'2 C5' C4' C4' H4' C4' O4' C4' C3' O4' C1' C1' H1' C1' N1 C1' C2' N1 C6 N1 C2 C6 H6 C6 C5 C5 C7 C5 C4 C7 H71 C7 H72 C7 H73 C4 O4 C4 N3 N3 H3 N3 C2 C2 O2 C3' H3' C3' C2' C3' O3' C2' H2'1 C2' H2'2 [ impropers ] C2 C6 N1 C1' C4 C6 C5 C7 N1 N3 C2 O2 C5 N3 C4 O4 C4 C2 N3 H3 N1 C5 C6 H6 and the THY with terminal Phosphate group is... ATOM 1 O5' DT A 1 -5.444 -3.882 -27.274 1.00 0.00 O ATOM 2 C5' DT A 1 -4.975 -5.193 -26.943 1.00 0.00 C ATOM 3 1H5' DT A 1 -4.594 -5.667 -27.848 1.00 0.00 H ATOM 4 2H5' DT A 1 -5.809 -5.781 -26.560 1.00 0.00 H ATOM 5 C4' DT A 1 -3.861 -5.152 -25.898 1.00 0.00 C ATOM 6 H4' DT A 1 -3.531 -6.170 -25.685 1.00 0.00 H ATOM 7 O4' DT A 1 -2.738 -4.387 -26.383 1.00 0.00 O ATOM 8 C1' DT A 1 -2.272 -3.512 -25.342 1.00 0.00 C ATOM 9 H1' DT A 1 -1.204 -3.694 -25.215 1.00 0.00 H ATOM 10 N1 DT A 1 -2.478 -2.073 -25.683 1.00 0.00 N ATOM 11 C6 DT A 1 -3.733 -1.556 -25.872 1.00 0.00 C ATOM 12 H6 DT A 1 -4.556 -2.210 -26.150 1.00 0.00 H ATOM 13 C2 DT A 1 -1.358 -1.256 -25.798 1.00 0.00 C ATOM 14 O2 DT A 1 -0.205 -1.685 -25.775 1.00 0.00 O ATOM 15 N3 DT A 1 -1.613 0.096 -25.966 1.00 0.00 N ATOM 16 H3 DT A 1 -0.819 0.705 -26.089 1.00 0.00 H ATOM 17 C4 DT A 1 -2.857 0.699 -25.989 1.00 0.00 C ATOM 18 O4 DT A 1 -2.954 1.918 -26.111 1.00 0.00 O ATOM 19 C5 DT A 1 -3.955 -0.231 -25.855 1.00 0.00 C ATOM 20 C7 DT A 1 -5.368 0.283 -25.580 1.00 0.00 C ATOM 21 H71 DT A 1 -5.381 1.373 -25.594 1.00 0.00 H ATOM 22 H72 DT A 1 -5.685 -0.067 -24.597 1.00 0.00 H ATOM 23 H73 DT A 1 -6.051 -0.098 -26.340 1.00 0.00 H ATOM 24 C2' DT A 1 -2.985 -4.008 -24.085 1.00 0.00 C ATOM 25 2H2' DT A 1 -2.460 -4.883 -23.698 1.00 0.00 H ATOM 26 1H2' DT A 1 -3.043 -3.243 -23.310 1.00 0.00 H ATOM 27 C3' DT A 1 -4.324 -4.508 -24.586 1.00 0.00 C ATOM 28 H3' DT A 1 -4.981 -3.657 -24.744 1.00 0.00 H ATOM 29 O3' DT A 1 -4.947 -5.483 -23.741 1.00 0.00 O ATOM 30 P DT A 1 -6.751 -3.677 -28.479 1.00 0.00 P ATOM 31 O1P DT A 1 -7.056 -2.218 -28.645 1.00 0.00 O ATOM 32 O2P DT A 1 -7.982 -4.394 -28.010 1.00 0.00 O1- ATOM 33 O3P DT A 1 -6.283 -4.285 -29.883 1.00 0.00 O ...it started creating top and Gro files but.. when I checked visually by VMD i found that in Gro file an H is placed between CH2O and PHOSPHATE group while in my pdb it's a proper terminal... like , -CH2O-PO3..? Can anyone suggest me any further changes I am supposed to made in these files ! Raghav -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. Can't post? Read http://www.gromacs.org/Support/Mailing_Lists