The column is a simple format for which each must start with an identifier "R" or "N" for protein or nucleotide sequences respectively. The remaining columns can be interchanged as one wishes. Consult options to pdb2mp. Each column lists a property, here residue, domain assignment (see 3Dee), secondary structure assignment (according to DSSP by Kabsh and Sander. Biopolymers 22 pp 2577-2637, 1983) and the x, y, and z coordinates of the C-alpha atoms. Lines starting with ";" are ignored.
; ENTRY 4mt2 - ; DOMAIN 2 RANGE 1 - 31 , 32 - 61 ; PHYL EUKARYOTA ; CLASS Metallothionein ; COMPOUND Metallothionein Isoform Ii ; AUTHOR A.H.Robbins,C.D.Stout ; MODEL type XRAY ; RESOLUTION 2.000000 ; ALIGN IDENTITY 100.0% (ATOM vs SEQRES in PDB) ; ----- R MET 1 . 15.959 19.129 50.206 R ASP 1 . 13.885 20.910 47.587 R PRO 1 T 10.337 19.460 46.659 R ASN 1 T 12.049 17.307 44.026 R CYS 1 . 15.082 15.879 45.993 R SER 1 . 14.877 15.100 49.767 R CYS 1 S 18.635 14.492 50.183 R ALA 1 . 21.307 16.274 52.123 R THR 1 S 22.711 19.047 49.961 R ASP 1 S 26.304 18.918 51.215 R GLY 1 S 27.678 16.519 48.573 R SER 1 . 27.844 13.528 50.984 R CYS 1 . 24.758 11.514 50.000 R SER 1 . 25.209 8.017 48.655 R CYS 1 . 21.565 7.335 47.731 R ALA 1 T 22.738 5.972 44.294 R GLY 1 T 19.315 5.425 42.858 R SER 1 . 17.563 4.099 45.966 R CYS 1 S 15.797 7.389 46.680 R LYS 1 . 12.313 8.343 45.853 R CYS 1 . 13.352 11.695 44.353 R LYS 1 S 11.672 13.074 41.246 R GLN 1 S 14.786 15.071 40.286 R CYS 1 . 17.596 14.040 42.617 R LYS 1 . 20.435 16.445 42.975 R CYS 1 . 23.079 13.813 44.196 R THR 1 T 26.054 13.067 41.965 R SER 1 T 25.822 9.400 43.141 R CYS 1 . 22.431 9.000 41.526 R LYS 1 . 21.711 7.976 37.987 R LYS 1 . 17.946 7.109 37.891 R SER 2 . 16.074 7.172 34.577 R CYS 2 S 13.929 10.048 33.330 R CYS 2 S 10.979 7.586 33.169 R SER 2 T 9.629 4.403 34.400 R CYS 2 T 9.357 2.837 30.951 R CYS 2 S 12.970 3.207 29.896 R PRO 2 . 16.409 2.332 31.374 R VAL 2 T 18.592 5.304 32.237 R GLY 2 T 20.717 4.495 29.101 R CYS 2 . 17.812 4.858 26.494 R ALA 2 T 19.099 6.505 23.261 R LYS 2 T 15.923 8.292 22.202 R CYS 2 T 15.544 9.916 25.650 R SER 2 T 19.184 11.190 26.073 R GLN 2 T 18.576 14.759 24.840 R GLY 2 S 15.382 14.935 26.795 R CYS 2 . 12.671 12.469 27.879 R ILE 2 . 10.161 11.939 25.160 R CYS 2 S 7.737 9.559 27.014 R LYS 2 . 4.289 10.165 28.455 R GLU 2 T 4.521 9.919 32.302 R ALA 2 T 1.904 7.145 32.666 R SER 2 . 4.610 4.770 34.131 R ASP 2 S 4.082 1.124 32.859 R LYS 2 . 5.798 0.660 29.459 R CYS 2 . 6.157 2.883 26.328 R SER 2 S 5.337 2.826 22.671 R CYS 2 S 7.882 5.542 21.628 R CYS 2 . 11.113 3.719 22.530 R ALA 2 . 12.601 0.478 21.366