HEADER STRUCTURAL PROTEIN 31-DEC-69 7XMT TITLE CryoEM structure of somatostatin receptor 4 (SSTR4) with Gi1 and TITLE 2 J-2156 COMPND MOL_ID: 4; COMPND 2 MOLECULE: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit COMPND 3 gamma-2; COMPND 4 CHAIN: C; COMPND 5 ENGINEERED: YES; EXPDTA ELECTRON MICROSCOPY DBREF 7XMT C 1 71 UNP P59768 GBG2_HUMAN 1 71 SEQRES 1 C 35 LYS VAL SER LYS ALA ALA ALA ASP LEU MET ALA TYR CYS SEQRES 2 C 35 GLU ALA HIS ALA LYS GLU ASP PRO LEU LEU THR PRO VAL SEQRES 3 C 35 PRO ALA SER GLU ASN PRO PHE ARG GLU ATOM 1 N LYS C 29 73.580 157.793 139.804 1.00 44.42 ATOM 2 CA LYS C 29 73.739 156.535 140.523 1.00 44.42 ATOM 3 C LYS C 29 75.014 155.824 140.083 1.00 44.42 ATOM 4 O LYS C 29 75.124 155.370 138.943 1.00 44.42 ATOM 5 CB LYS C 29 72.524 155.632 140.304 1.00 44.42 ATOM 6 CG LYS C 29 72.482 154.420 141.219 1.00 44.42 ATOM 7 CD LYS C 29 72.373 154.838 142.678 1.00 44.42 ATOM 8 CE LYS C 29 72.287 153.629 143.595 1.00 44.42 ATOM 9 NZ LYS C 29 72.164 154.027 145.025 1.00 44.42 ATOM 10 N VAL C 30 75.978 155.734 140.999 1.00 42.62 ATOM 11 CA VAL C 30 77.267 155.125 140.696 1.00 42.62 ATOM 12 C VAL C 30 77.410 153.723 141.285 1.00 42.62 ATOM 13 O VAL C 30 78.313 152.981 140.870 1.00 42.62 ATOM 14 CB VAL C 30 78.422 156.031 141.179 1.00 42.62 ATOM 15 CG1 VAL C 30 78.634 155.883 142.680 1.00 42.62 ATOM 16 CG2 VAL C 30 79.703 155.742 140.405 1.00 42.62 ATOM 17 N SER C 31 76.546 153.333 142.226 1.00 42.90 ATOM 18 CA SER C 31 76.670 152.018 142.847 1.00 42.90 ATOM 19 C SER C 31 76.424 150.905 141.835 1.00 42.90 ATOM 20 O SER C 31 77.235 149.980 141.702 1.00 42.90 ATOM 21 CB SER C 31 75.703 151.901 144.026 1.00 42.90 ATOM 22 OG SER C 31 75.704 150.588 144.559 1.00 42.90 ATOM 23 N LYS C 32 75.310 150.981 141.105 1.00 41.91 ATOM 24 CA LYS C 32 75.028 149.972 140.090 1.00 41.91 ATOM 25 C LYS C 32 75.863 150.177 138.833 1.00 41.91 ATOM 26 O LYS C 32 76.085 149.222 138.080 1.00 41.91 ATOM 27 CB LYS C 32 73.537 149.968 139.748 1.00 41.91 ATOM 28 CG LYS C 32 72.627 150.129 140.956 1.00 41.91 ATOM 29 CD LYS C 32 72.868 149.024 141.978 1.00 41.91 ATOM 30 CE LYS C 32 71.939 149.159 143.173 1.00 41.91 ATOM 31 NZ LYS C 32 70.543 148.774 142.828 1.00 41.91 ATOM 32 N ALA C 33 76.332 151.404 138.588 1.00 39.80 ATOM 33 CA ALA C 33 77.258 151.625 137.483 1.00 39.80 ATOM 34 C ALA C 33 78.579 150.905 137.716 1.00 39.80 ATOM 35 O ALA C 33 79.253 150.518 136.755 1.00 39.80 ATOM 36 CB ALA C 33 77.490 153.121 137.282 1.00 39.80 ATOM 37 N ALA C 34 78.964 150.719 138.980 1.00 39.28 ATOM 38 CA ALA C 34 80.140 149.913 139.285 1.00 39.28 ATOM 39 C ALA C 34 79.872 148.436 139.029 1.00 39.28 ATOM 40 O ALA C 34 80.777 147.694 138.630 1.00 39.28 ATOM 41 CB ALA C 34 80.569 150.138 140.734 1.00 39.28 ATOM 42 N ALA C 35 78.633 147.992 139.255 1.00 38.87 ATOM 43 CA ALA C 35 78.259 146.608 138.994 1.00 38.87 ATOM 44 C ALA C 35 78.115 146.307 137.510 1.00 38.87 ATOM 45 O ALA C 35 77.945 145.138 137.148 1.00 38.87 ATOM 46 CB ALA C 35 76.955 146.270 139.719 1.00 38.87 ATOM 47 N ASP C 36 78.171 147.325 136.647 1.00 38.94 ATOM 48 CA ASP C 36 78.093 147.096 135.210 1.00 38.94 ATOM 49 C ASP C 36 79.296 146.314 134.696 1.00 38.94 ATOM 50 O ASP C 36 79.192 145.643 133.664 1.00 38.94 ATOM 51 CB ASP C 36 77.977 148.437 134.479 1.00 38.94 ATOM 52 CG ASP C 36 77.522 148.289 133.035 1.00 38.94 ATOM 53 OD1 ASP C 36 77.267 147.151 132.591 1.00 38.94 ATOM 54 OD2 ASP C 36 77.420 149.322 132.341 1.00 38.94 ATOM 55 N LEU C 37 80.429 146.373 135.400 1.00 36.01 ATOM 56 CA LEU C 37 81.602 145.610 134.993 1.00 36.01 ATOM 57 C LEU C 37 81.386 144.108 135.121 1.00 36.01 ATOM 58 O LEU C 37 82.098 143.336 134.471 1.00 36.01 ATOM 59 CB LEU C 37 82.817 146.030 135.821 1.00 36.01 ATOM 60 CG LEU C 37 83.198 147.511 135.769 1.00 36.01 ATOM 61 CD1 LEU C 37 84.424 147.783 136.627 1.00 36.01 ATOM 62 CD2 LEU C 37 83.433 147.955 134.334 1.00 36.01 ATOM 63 N MET C 38 80.419 143.681 135.938 1.00 37.07 ATOM 64 CA MET C 38 80.133 142.256 136.072 1.00 37.07 ATOM 65 C MET C 38 79.583 141.669 134.779 1.00 37.07 ATOM 66 O MET C 38 79.800 140.486 134.495 1.00 37.07 ATOM 67 CB MET C 38 79.148 142.024 137.218 1.00 37.07 ATOM 68 CG MET C 38 79.643 142.477 138.586 1.00 37.07 ATOM 69 SD MET C 38 80.651 141.243 139.432 1.00 37.07 ATOM 70 CE MET C 38 82.301 141.739 138.944 1.00 37.07 ATOM 71 N ALA C 39 78.872 142.474 133.985 1.00 37.77 ATOM 72 CA ALA C 39 78.306 141.981 132.736 1.00 37.77 ATOM 73 C ALA C 39 79.355 141.814 131.646 1.00 37.77 ATOM 74 O ALA C 39 79.092 141.132 130.650 1.00 37.77 ATOM 75 CB ALA C 39 77.200 142.920 132.254 1.00 37.77 ATOM 76 N TYR C 40 80.533 142.416 131.808 1.00 32.75 ATOM 77 CA TYR C 40 81.588 142.329 130.808 1.00 32.75 ATOM 78 C TYR C 40 82.745 141.432 131.215 1.00 32.75 ATOM 79 O TYR C 40 83.378 140.833 130.343 1.00 32.75 ATOM 80 CB TYR C 40 82.136 143.726 130.488 1.00 32.75 ATOM 81 CG TYR C 40 82.936 143.785 129.207 1.00 32.75 ATOM 82 CD1 TYR C 40 82.310 143.981 127.984 1.00 32.75 ATOM 83 CD2 TYR C 40 84.318 143.644 129.221 1.00 32.75 ATOM 84 CE1 TYR C 40 83.035 144.034 126.810 1.00 32.75 ATOM 85 CE2 TYR C 40 85.052 143.695 128.052 1.00 32.75 ATOM 86 CZ TYR C 40 84.406 143.891 126.849 1.00 32.75 ATOM 87 OH TYR C 40 85.133 143.944 125.682 1.00 32.75 ATOM 88 N CYS C 41 83.039 141.321 132.510 1.00 36.13 ATOM 89 CA CYS C 41 84.140 140.478 132.960 1.00 36.13 ATOM 90 C CYS C 41 83.723 139.022 133.114 1.00 36.13 ATOM 91 O CYS C 41 84.502 138.118 132.796 1.00 36.13 ATOM 92 CB CYS C 41 84.696 140.997 134.289 1.00 36.13 ATOM 93 SG CYS C 41 83.559 140.843 135.683 1.00 36.13 ATOM 94 N GLU C 42 82.503 138.777 133.597 1.00 37.26 ATOM 95 CA GLU C 42 82.017 137.415 133.765 1.00 37.26 ATOM 96 C GLU C 42 81.551 136.794 132.455 1.00 37.26 ATOM 97 O GLU C 42 81.421 135.568 132.378 1.00 37.26 ATOM 98 CB GLU C 42 80.876 137.392 134.785 1.00 37.26 ATOM 99 CG GLU C 42 81.278 137.893 136.163 1.00 37.26 ATOM 100 CD GLU C 42 80.120 137.906 137.140 1.00 37.26 ATOM 101 OE1 GLU C 42 78.982 137.607 136.722 1.00 37.26 ATOM 102 OE2 GLU C 42 80.348 138.216 138.328 1.00 37.26 ATOM 103 N ALA C 43 81.303 137.607 131.428 1.00 36.26 ATOM 104 CA ALA C 43 80.896 137.093 130.127 1.00 36.26 ATOM 105 C ALA C 43 82.074 136.873 129.189 1.00 36.26 ATOM 106 O ALA C 43 81.981 136.045 128.275 1.00 36.26 ATOM 107 CB ALA C 43 79.892 138.045 129.473 1.00 36.26 ATOM 108 N HIS C 44 83.177 137.592 129.393 1.00 33.19 ATOM 109 CA HIS C 44 84.372 137.449 128.572 1.00 33.19 ATOM 110 C HIS C 44 85.494 136.712 129.293 1.00 33.19 ATOM 111 O HIS C 44 86.637 136.730 128.823 1.00 33.19 ATOM 112 CB HIS C 44 84.861 138.823 128.107 1.00 33.19 ATOM 113 CG HIS C 44 83.944 139.493 127.131 1.00 33.19 ATOM 114 ND1 HIS C 44 84.143 139.443 125.768 1.00 33.19 ATOM 115 CD2 HIS C 44 82.822 140.226 127.321 1.00 33.19 ATOM 116 CE1 HIS C 44 83.184 140.118 125.160 1.00 33.19 ATOM 117 NE2 HIS C 44 82.369 140.603 126.080 1.00 33.19 ATOM 118 N ALA C 45 85.198 136.064 130.421 1.00 34.22 ATOM 119 CA ALA C 45 86.222 135.340 131.165 1.00 34.22 ATOM 120 C ALA C 45 86.568 133.996 130.541 1.00 34.22 ATOM 121 O ALA C 45 87.634 133.447 130.840 1.00 34.22 ATOM 122 CB ALA C 45 85.774 135.131 132.612 1.00 34.22 ATOM 123 N LYS C 46 85.698 133.454 129.685 1.00 36.66 ATOM 124 CA LYS C 46 85.977 132.157 129.077 1.00 36.66 ATOM 125 C LYS C 46 87.107 132.252 128.059 1.00 36.66 ATOM 126 O LYS C 46 87.942 131.344 127.965 1.00 36.66 ATOM 127 CB LYS C 46 84.711 131.594 128.428 1.00 36.66 ATOM 128 CG LYS C 46 83.809 130.812 129.377 1.00 36.66 ATOM 129 CD LYS C 46 83.052 131.725 130.329 1.00 36.66 ATOM 130 CE LYS C 46 82.003 132.542 129.596 1.00 36.66 ATOM 131 NZ LYS C 46 81.210 133.390 130.529 1.00 36.66 ATOM 132 N GLU C 47 87.156 133.342 127.291 1.00 34.70 ATOM 133 CA GLU C 47 88.199 133.549 126.293 1.00 34.70 ATOM 134 C GLU C 47 89.396 134.316 126.844 1.00 34.70 ATOM 135 O GLU C 47 90.113 134.974 126.078 1.00 34.70 ATOM 136 CB GLU C 47 87.625 134.262 125.068 1.00 34.70 ATOM 137 CG GLU C 47 86.943 135.589 125.366 1.00 34.70 ATOM 138 CD GLU C 47 85.462 135.435 125.658 1.00 34.70 ATOM 139 OE1 GLU C 47 85.037 134.319 126.023 1.00 34.70 ATOM 140 OE2 GLU C 47 84.722 136.430 125.515 1.00 34.70 ATOM 141 N ASP C 48 89.632 134.249 128.154 1.00 33.37 ATOM 142 CA ASP C 48 90.771 134.915 128.779 1.00 33.37 ATOM 143 C ASP C 48 91.782 133.870 129.231 1.00 33.37 ATOM 144 O ASP C 48 91.574 133.209 130.260 1.00 33.37 ATOM 145 CB ASP C 48 90.314 135.768 129.966 1.00 33.37 ATOM 146 CG ASP C 48 91.426 136.637 130.524 1.00 33.37 ATOM 147 OD1 ASP C 48 92.486 136.746 129.872 1.00 33.37 ATOM 148 OD2 ASP C 48 91.240 137.213 131.617 1.00 33.37 ATOM 149 N PRO C 49 92.886 133.675 128.502 1.00 32.84 ATOM 150 CA PRO C 49 93.890 132.687 128.929 1.00 32.84 ATOM 151 C PRO C 49 94.606 133.054 130.218 1.00 32.84 ATOM 152 O PRO C 49 95.289 132.194 130.789 1.00 32.84 ATOM 153 CB PRO C 49 94.871 132.646 127.748 1.00 32.84 ATOM 154 CG PRO C 49 94.119 133.236 126.593 1.00 32.84 ATOM 155 CD PRO C 49 93.205 134.257 127.189 1.00 32.84 ATOM 156 N LEU C 50 94.477 134.293 130.693 1.00 28.78 ATOM 157 CA LEU C 50 95.136 134.715 131.923 1.00 28.78 ATOM 158 C LEU C 50 94.322 134.369 133.164 1.00 28.78 ATOM 159 O LEU C 50 94.892 133.965 134.183 1.00 28.78 ATOM 160 CB LEU C 50 95.406 136.222 131.882 1.00 28.78 ATOM 161 CG LEU C 50 96.250 136.723 130.709 1.00 28.78 ATOM 162 CD1 LEU C 50 96.422 138.231 130.778 1.00 28.78 ATOM 163 CD2 LEU C 50 97.601 136.026 130.682 1.00 28.78 ATOM 164 N LEU C 51 92.998 134.517 133.099 1.00 33.25 ATOM 165 CA LEU C 51 92.159 134.208 134.252 1.00 33.25 ATOM 166 C LEU C 51 91.849 132.719 134.338 1.00 33.25 ATOM 167 O LEU C 51 91.910 132.131 135.424 1.00 33.25 ATOM 168 CB LEU C 51 90.865 135.021 134.192 1.00 33.25 ATOM 169 CG LEU C 51 89.820 134.724 135.270 1.00 33.25 ATOM 170 CD1 LEU C 51 90.398 134.947 136.659 1.00 33.25 ATOM 171 CD2 LEU C 51 88.577 135.576 135.061 1.00 33.25 ATOM 172 N THR C 52 91.516 132.094 133.211 1.00 37.22 ATOM 173 CA THR C 52 91.205 130.672 133.215 1.00 37.22 ATOM 174 C THR C 52 92.410 129.856 132.765 1.00 37.22 ATOM 175 O THR C 52 93.156 130.289 131.879 1.00 37.22 ATOM 176 CB THR C 52 90.021 130.370 132.295 1.00 37.22 ATOM 177 OG1 THR C 52 90.311 130.837 130.971 1.00 37.22 ATOM 178 CG2 THR C 52 88.762 131.054 132.806 1.00 37.22 ATOM 179 N PRO C 53 92.626 128.684 133.361 1.00 40.84 ATOM 180 CA PRO C 53 93.756 127.846 132.944 1.00 40.84 ATOM 181 C PRO C 53 93.586 127.358 131.514 1.00 40.84 ATOM 182 O PRO C 53 92.487 127.001 131.084 1.00 40.84 ATOM 183 CB PRO C 53 93.724 126.680 133.941 1.00 40.84 ATOM 184 CG PRO C 53 92.916 127.180 135.101 1.00 40.84 ATOM 185 CD PRO C 53 91.906 128.112 134.510 1.00 40.84 ATOM 186 N VAL C 54 94.693 127.348 130.777 1.00 38.75 ATOM 187 CA VAL C 54 94.694 126.929 129.378 1.00 38.75 ATOM 188 C VAL C 54 95.843 125.952 129.154 1.00 38.75 ATOM 189 O VAL C 54 96.893 126.073 129.802 1.00 38.75 ATOM 190 CB VAL C 54 94.800 128.138 128.434 1.00 38.75 ATOM 191 CG1 VAL C 54 93.479 128.892 128.387 1.00 38.75 ATOM 192 CG2 VAL C 54 95.927 129.059 128.877 1.00 38.75 ATOM 193 N PRO C 55 95.693 124.975 128.263 1.00 37.74 ATOM 194 CA PRO C 55 96.790 124.035 128.014 1.00 37.74 ATOM 195 C PRO C 55 97.939 124.699 127.273 1.00 37.74 ATOM 196 O PRO C 55 97.764 125.694 126.564 1.00 37.74 ATOM 197 CB PRO C 55 96.136 122.943 127.160 1.00 37.74 ATOM 198 CG PRO C 55 94.992 123.628 126.492 1.00 37.74 ATOM 199 CD PRO C 55 94.492 124.650 127.474 1.00 37.74 ATOM 200 N ALA C 56 99.133 124.129 127.447 1.00 37.33 ATOM 201 CA ALA C 56 100.321 124.677 126.805 1.00 37.33 ATOM 202 C ALA C 56 100.370 124.375 125.313 1.00 37.33 ATOM 203 O ALA C 56 101.049 125.092 124.571 1.00 37.33 ATOM 204 CB ALA C 56 101.582 124.143 127.485 1.00 37.33 ATOM 205 N SER C 57 99.669 123.333 124.858 1.00 37.46 ATOM 206 CA SER C 57 99.681 123.003 123.437 1.00 37.46 ATOM 207 C SER C 57 98.871 124.008 122.628 1.00 37.46 ATOM 208 O SER C 57 99.245 124.351 121.500 1.00 37.46 ATOM 209 CB SER C 57 99.149 121.587 123.222 1.00 37.46 ATOM 210 OG SER C 57 99.150 121.247 121.846 1.00 37.46 ATOM 211 N GLU C 58 97.757 124.489 123.185 1.00 34.77 ATOM 212 CA GLU C 58 96.942 125.468 122.473 1.00 34.77 ATOM 213 C GLU C 58 97.622 126.829 122.417 1.00 34.77 ATOM 214 O GLU C 58 97.412 127.586 121.462 1.00 34.77 ATOM 215 CB GLU C 58 95.566 125.580 123.134 1.00 34.77 ATOM 216 CG GLU C 58 94.532 126.346 122.318 1.00 34.77 ATOM 217 CD GLU C 58 94.518 127.829 122.633 1.00 34.77 ATOM 218 OE1 GLU C 58 95.111 128.227 123.657 1.00 34.77 ATOM 219 OE2 GLU C 58 93.911 128.598 121.857 1.00 34.77 ATOM 220 N ASN C 59 98.436 127.155 123.413 1.00 32.58 ATOM 221 CA ASN C 59 99.134 128.434 123.424 1.00 32.58 ATOM 222 C ASN C 59 100.347 128.373 122.502 1.00 32.58 ATOM 223 O ASN C 59 101.113 127.405 122.560 1.00 32.58 ATOM 224 CB ASN C 59 99.574 128.797 124.840 1.00 32.58 ATOM 225 CG ASN C 59 98.408 128.908 125.802 1.00 32.58 ATOM 226 OD1 ASN C 59 97.321 128.395 125.539 1.00 32.58 ATOM 227 ND2 ASN C 59 98.631 129.580 126.925 1.00 32.58 ATOM 228 N PRO C 60 100.554 129.375 121.643 1.00 28.03 ATOM 229 CA PRO C 60 101.739 129.368 120.770 1.00 28.03 ATOM 230 C PRO C 60 103.053 129.528 121.516 1.00 28.03 ATOM 231 O PRO C 60 104.114 129.354 120.903 1.00 28.03 ATOM 232 CB PRO C 60 101.493 130.557 119.828 1.00 28.03 ATOM 233 CG PRO C 60 100.024 130.850 119.940 1.00 28.03 ATOM 234 CD PRO C 60 99.656 130.502 121.346 1.00 28.03 ATOM 235 N PHE C 61 103.021 129.851 122.807 1.00 23.84 ATOM 236 CA PHE C 61 104.233 130.012 123.608 1.00 23.84 ATOM 237 C PHE C 61 104.541 128.678 124.276 1.00 23.84 ATOM 238 O PHE C 61 104.013 128.368 125.347 1.00 23.84 ATOM 239 CB PHE C 61 104.058 131.125 124.634 1.00 23.84 ATOM 240 CG PHE C 61 103.713 132.457 124.033 1.00 23.84 ATOM 241 CD1 PHE C 61 102.391 132.826 123.843 1.00 23.84 ATOM 242 CD2 PHE C 61 104.710 133.343 123.660 1.00 23.84 ATOM 243 CE1 PHE C 61 102.070 134.050 123.290 1.00 23.84 ATOM 244 CE2 PHE C 61 104.395 134.570 123.107 1.00 23.84 ATOM 245 CZ PHE C 61 103.073 134.923 122.923 1.00 23.84 ATOM 246 N ARG C 62 105.398 127.882 123.641 1.00 34.65 ATOM 247 CA ARG C 62 105.777 126.575 124.151 1.00 34.65 ATOM 248 C ARG C 62 107.285 126.403 124.043 1.00 34.65 ATOM 249 O ARG C 62 107.949 127.043 123.224 1.00 34.65 ATOM 250 CB ARG C 62 105.061 125.445 123.397 1.00 34.65 ATOM 251 CG ARG C 62 105.370 125.395 121.909 1.00 34.65 ATOM 252 CD ARG C 62 104.538 124.334 121.207 1.00 34.65 ATOM 253 NE ARG C 62 103.108 124.613 121.299 1.00 34.65 ATOM 254 CZ ARG C 62 102.432 125.347 120.422 1.00 34.65 ATOM 255 NH1 ARG C 62 103.056 125.879 119.380 1.00 34.65 ATOM 256 NH2 ARG C 62 101.132 125.550 120.585 1.00 34.65 ATOM 257 N GLU C 63 107.821 125.526 124.886 1.00 41.99 ATOM 258 CA GLU C 63 109.252 125.251 124.897 1.00 41.99 ATOM 259 C GLU C 63 109.552 124.023 124.043 1.00 41.99 ATOM 260 O GLU C 63 109.022 122.940 124.289 1.00 41.99 ATOM 261 CB GLU C 63 109.749 125.055 126.335 1.00 41.99 ATOM 262 CG GLU C 63 111.258 124.864 126.491 1.00 41.99 ATOM 263 CD GLU C 63 111.723 123.456 126.170 1.00 41.99 ATOM 264 OE1 GLU C 63 112.790 123.310 125.537 1.00 41.99 ATOM 265 OE2 GLU C 63 111.022 122.495 126.552 1.00 41.99 TER