HEADER VIRAL PROTEIN/IMMUNE SYSTEM 25-NOV-15 3JCB TITLE Structure of Simian Immunodeficiency Virus Envelope Spikes bound with TITLE 2 CD4 and Monoclonal Antibody 36D5 COMPND MOL_ID: 1; COMPND 2 MOLECULE: Envelope glycoprotein gp120; COMPND 3 CHAIN: A, E, I; COMPND 4 FRAGMENT: SEE REMARK ; EXPDTA ELECTRON MICROSCOPY DBREF 3JCB E 44 493 PDB 3JCB 3JCB 44 493 SEQRES 1 E 51 VAL LYS LEU THR PRO LEU CYS VAL THR LEU GLN CYS THR SEQRES 2 E 51 ASN VAL THR ASN ASN ILE THR ASP ASP MET ARG GLY GLU SEQRES 3 E 51 LEU LYS ASN CYS SER PHE ASN MET THR THR GLU LEU ARG SEQRES 4 E 51 ASP LYS LYS GLN LYS VAL TYR SER LEU PHE TYR ARG SEQRES 1 E 12 TYR ARG LEU ILE ASN CYS ASN THR SER ALA ILE THR ATOM 1 N TYR E 191 -0.573 26.258 48.532 1.00303.24 ATOM 2 CA TYR E 191 -1.786 25.690 47.958 1.00308.86 ATOM 3 C TYR E 191 -1.553 24.221 47.626 1.00293.32 ATOM 4 O TYR E 191 -0.460 23.839 47.220 1.00287.24 ATOM 5 CB TYR E 191 -2.151 26.454 46.685 1.00318.82 ATOM 6 N ARG E 192 -2.575 23.391 47.805 1.00250.70 ATOM 7 CA ARG E 192 -2.430 21.957 47.565 1.00243.10 ATOM 8 C ARG E 192 -3.307 21.426 46.427 1.00225.23 ATOM 9 O ARG E 192 -4.064 22.177 45.810 1.00216.32 ATOM 10 CB ARG E 192 -2.725 21.181 48.852 1.00246.94 ATOM 11 N LEU E 193 -3.169 20.127 46.151 1.00184.28 ATOM 12 CA LEU E 193 -4.074 19.374 45.274 1.00177.34 ATOM 13 C LEU E 193 -4.110 19.918 43.848 1.00181.79 ATOM 14 O LEU E 193 -3.057 20.038 43.213 1.00180.90 ATOM 15 CB LEU E 193 -5.492 19.424 45.839 1.00176.58 ATOM 16 N ILE E 194 -5.336 20.160 43.360 1.00253.83 ATOM 17 CA ILE E 194 -5.649 20.851 42.098 1.00250.57 ATOM 18 C ILE E 194 -5.512 20.003 40.825 1.00250.62 ATOM 19 O ILE E 194 -6.375 20.077 39.948 1.00246.35 ATOM 20 CB ILE E 194 -4.759 22.104 41.931 1.00249.48 ATOM 21 N ASN E 195 -4.430 19.229 40.729 1.00214.66 ATOM 22 CA ASN E 195 -4.123 18.368 39.578 1.00213.15 ATOM 23 C ASN E 195 -4.555 18.870 38.197 1.00210.48 ATOM 24 O ASN E 195 -4.531 20.065 37.898 1.00204.68 ATOM 25 CB ASN E 195 -4.788 17.006 39.809 1.00209.56 ATOM 26 N CYS E 196 -4.912 17.911 37.351 1.00371.58 ATOM 27 CA CYS E 196 -5.293 18.148 35.964 1.00364.78 ATOM 28 C CYS E 196 -6.731 17.666 35.794 1.00360.13 ATOM 29 O CYS E 196 -7.208 16.881 36.608 1.00364.75 ATOM 30 CB CYS E 196 -4.351 17.419 35.006 1.00364.87 ATOM 31 SG CYS E 196 -3.812 15.813 35.629 1.00402.65 ATOM 32 N ASN E 197 -7.432 18.136 34.766 1.00231.99 ATOM 33 CA ASN E 197 -8.812 17.675 34.567 1.00225.31 ATOM 34 C ASN E 197 -8.961 16.606 33.481 1.00227.65 ATOM 35 O ASN E 197 -8.987 16.894 32.286 1.00224.56 ATOM 36 CB ASN E 197 -9.754 18.851 34.277 1.00226.02 ATOM 37 CG ASN E 197 -11.094 18.723 35.003 1.00218.43 ATOM 38 OD1 ASN E 197 -11.434 19.551 35.850 1.00217.02 ATOM 39 ND2 ASN E 197 -11.858 17.679 34.673 1.00219.51 ATOM 40 N THR E 198 -9.061 15.366 33.939 1.00212.13 ATOM 41 CA THR E 198 -9.451 14.216 33.121 1.00218.48 ATOM 42 C THR E 198 -8.627 13.876 31.870 1.00218.00 ATOM 43 O THR E 198 -9.080 13.064 31.062 1.00223.27 ATOM 44 CB THR E 198 -10.940 14.326 32.702 1.00214.97 ATOM 45 N SER E 199 -7.435 14.463 31.726 1.00 99.27 ATOM 46 CA SER E 199 -6.407 13.971 30.792 1.00202.84 ATOM 47 C SER E 199 -5.094 14.743 30.947 1.00202.84 ATOM 48 O SER E 199 -5.114 15.948 31.184 1.00205.57 ATOM 49 CB SER E 199 -6.882 14.087 29.344 1.00 95.95 ATOM 50 N ALA E 200 -3.955 14.058 30.829 1.00270.97 ATOM 51 CA ALA E 200 -2.680 14.763 30.701 1.00204.90 ATOM 52 C ALA E 200 -1.624 13.981 29.924 1.00209.82 ATOM 53 O ALA E 200 -0.999 13.075 30.464 1.00208.31 ATOM 54 CB ALA E 200 -2.143 15.155 32.079 1.00274.16 ATOM 55 N ILE E 201 -1.400 14.362 28.670 1.00 5.03 ATOM 56 CA ILE E 201 -0.239 13.894 27.923 1.00 5.00 ATOM 57 C ILE E 201 0.922 14.861 28.123 1.00 11.49 ATOM 58 O ILE E 201 0.767 16.067 27.959 1.00 5.86 ATOM 59 CB ILE E 201 -0.534 13.727 26.419 1.00 8.19 ATOM 60 N THR E 202 2.079 14.322 28.493 1.00 89.06 ATOM 61 CA THR E 202 3.273 15.131 28.717 1.00 95.57 ATOM 62 C THR E 202 4.319 14.870 27.641 1.00 91.83 ATOM 63 O THR E 202 4.879 13.776 27.568 1.00 92.44 ATOM 64 CB THR E 202 3.892 14.850 30.097 1.00106.06 TER