HEADER STRUCTURAL PROTEIN 31-DEC-69 6C1D TITLE High-Resolution Cryo-EM Structures of Actin-bound Myosin States TITLE 2 Reveal the Mechanism of Myosin Force Sensing COMPND MOL_ID: 2; COMPND 2 MOLECULE: Unconventional myosin-Ib; COMPND 3 CHAIN: P; EXPDTA ELECTRON MICROSCOPY DBREF 6C1D P 6 728 UNP Q05096 MYO1B_RAT 6 728 SEQRES 1 P 39 PRO ARG THR LEU PHE GLN LEU GLU ASP LEU ARG LYS GLN SEQRES 2 P 39 ARG LEU GLU ASP LEU ALA THR LEU ILE GLN LYS ILE TYR SEQRES 3 P 39 ARG GLY TRP LYS CYS ARG THR HIS PHE LEU LEU MET LYS ATOM 1 N PRO P 690 176.294 266.656 245.811 1.00 99.50 ATOM 2 CA PRO P 690 175.752 267.911 246.347 1.00 99.50 ATOM 3 C PRO P 690 174.398 268.275 245.764 1.00 99.50 ATOM 4 O PRO P 690 173.553 268.857 246.454 1.00 99.50 ATOM 5 CB PRO P 690 176.811 268.945 245.949 1.00 99.50 ATOM 6 CG PRO P 690 178.045 268.158 245.718 1.00 99.50 ATOM 7 CD PRO P 690 177.578 266.874 245.127 1.00 99.50 ATOM 8 N ARG P 691 174.183 267.941 244.488 1.00102.37 ATOM 9 CA ARG P 691 172.908 268.242 243.847 1.00102.37 ATOM 10 C ARG P 691 171.781 267.374 244.385 1.00102.37 ATOM 11 O ARG P 691 170.609 267.755 244.261 1.00102.37 ATOM 12 CB ARG P 691 173.023 268.097 242.325 1.00102.37 ATOM 13 CG ARG P 691 173.171 266.669 241.804 1.00102.37 ATOM 14 CD ARG P 691 174.638 266.274 241.645 1.00102.37 ATOM 15 NE ARG P 691 174.808 264.965 241.022 1.00102.37 ATOM 16 CZ ARG P 691 175.133 264.792 239.746 1.00102.37 ATOM 17 NH1 ARG P 691 175.330 265.846 238.969 1.00102.37 ATOM 18 NH2 ARG P 691 175.267 263.570 239.250 1.00102.37 ATOM 19 N THR P 692 172.114 266.231 244.989 1.00104.50 ATOM 20 CA THR P 692 171.121 265.443 245.706 1.00104.50 ATOM 21 C THR P 692 170.566 266.220 246.894 1.00104.50 ATOM 22 O THR P 692 169.348 266.310 247.068 1.00104.50 ATOM 23 CB THR P 692 171.732 264.119 246.161 1.00104.50 ATOM 24 OG1 THR P 692 172.208 263.399 245.018 1.00104.50 ATOM 25 CG2 THR P 692 170.693 263.277 246.874 1.00104.50 ATOM 26 N LEU P 693 171.443 266.823 247.703 1.00103.23 ATOM 27 CA LEU P 693 170.948 267.651 248.799 1.00103.23 ATOM 28 C LEU P 693 170.380 268.976 248.320 1.00103.23 ATOM 29 O LEU P 693 169.603 269.594 249.053 1.00103.23 ATOM 30 CB LEU P 693 172.027 267.939 249.842 1.00103.23 ATOM 31 CG LEU P 693 172.337 266.840 250.856 1.00103.23 ATOM 32 CD1 LEU P 693 173.368 265.890 250.304 1.00103.23 ATOM 33 CD2 LEU P 693 172.767 267.397 252.199 1.00103.23 ATOM 34 N PHE P 694 170.764 269.441 247.130 1.00106.65 ATOM 35 CA PHE P 694 170.072 270.582 246.541 1.00106.65 ATOM 36 C PHE P 694 168.621 270.228 246.242 1.00106.65 ATOM 37 O PHE P 694 167.708 271.027 246.491 1.00106.65 ATOM 38 CB PHE P 694 170.780 271.034 245.264 1.00106.65 ATOM 39 CG PHE P 694 172.137 271.650 245.491 1.00106.65 ATOM 40 CD1 PHE P 694 172.528 272.096 246.746 1.00106.65 ATOM 41 CD2 PHE P 694 173.021 271.789 244.435 1.00106.65 ATOM 42 CE1 PHE P 694 173.773 272.660 246.940 1.00106.65 ATOM 43 CE2 PHE P 694 174.268 272.350 244.628 1.00106.65 ATOM 44 CZ PHE P 694 174.642 272.784 245.881 1.00106.65 ATOM 45 N GLN P 695 168.391 269.012 245.739 1.00112.56 ATOM 46 CA GLN P 695 167.030 268.560 245.475 1.00112.56 ATOM 47 C GLN P 695 166.271 268.282 246.770 1.00112.56 ATOM 48 O GLN P 695 165.077 268.587 246.869 1.00112.56 ATOM 49 CB GLN P 695 167.065 267.318 244.586 1.00112.56 ATOM 50 CG GLN P 695 165.702 266.821 244.143 1.00112.56 ATOM 51 CD GLN P 695 164.994 267.805 243.231 1.00112.56 ATOM 52 OE1 GLN P 695 165.613 268.419 242.362 1.00112.56 ATOM 53 NE2 GLN P 695 163.689 267.958 243.424 1.00112.56 ATOM 54 N LEU P 696 166.946 267.708 247.773 1.00111.16 ATOM 55 CA LEU P 696 166.278 267.379 249.031 1.00111.16 ATOM 56 C LEU P 696 165.919 268.630 249.815 1.00111.16 ATOM 57 O LEU P 696 164.860 268.687 250.449 1.00111.16 ATOM 58 CB LEU P 696 167.153 266.466 249.890 1.00111.16 ATOM 59 CG LEU P 696 167.422 265.031 249.439 1.00111.16 ATOM 60 CD1 LEU P 696 168.374 264.345 250.406 1.00111.16 ATOM 61 CD2 LEU P 696 166.136 264.246 249.311 1.00111.16 ATOM 62 N GLU P 697 166.789 269.637 249.800 1.00112.70 ATOM 63 CA GLU P 697 166.434 270.883 250.463 1.00112.70 ATOM 64 C GLU P 697 165.440 271.686 249.639 1.00112.70 ATOM 65 O GLU P 697 164.666 272.467 250.203 1.00112.70 ATOM 66 CB GLU P 697 167.683 271.713 250.749 1.00112.70 ATOM 67 CG GLU P 697 168.619 271.103 251.773 1.00112.70 ATOM 68 CD GLU P 697 168.026 271.048 253.163 1.00112.70 ATOM 69 OE1 GLU P 697 167.206 271.922 253.509 1.00112.70 ATOM 70 OE2 GLU P 697 168.402 270.136 253.921 1.00112.70 ATOM 71 N ASP P 698 165.450 271.514 248.314 1.00117.91 ATOM 72 CA ASP P 698 164.446 272.160 247.474 1.00117.91 ATOM 73 C ASP P 698 163.053 271.610 247.771 1.00117.91 ATOM 74 O ASP P 698 162.107 272.378 248.001 1.00117.91 ATOM 75 CB ASP P 698 164.808 271.958 246.001 1.00117.91 ATOM 76 CG ASP P 698 164.020 272.860 245.059 1.00117.91 ATOM 77 OD1 ASP P 698 163.205 273.686 245.524 1.00117.91 ATOM 78 OD2 ASP P 698 164.218 272.734 243.832 1.00117.91 ATOM 79 N LEU P 699 162.919 270.280 247.793 1.00120.68 ATOM 80 CA LEU P 699 161.652 269.652 248.150 1.00120.68 ATOM 81 C LEU P 699 161.301 269.886 249.612 1.00120.68 ATOM 82 O LEU P 699 160.117 269.897 249.969 1.00120.68 ATOM 83 CB LEU P 699 161.712 268.155 247.858 1.00120.68 ATOM 84 CG LEU P 699 161.850 267.761 246.390 1.00120.68 ATOM 85 CD1 LEU P 699 162.033 266.259 246.258 1.00120.68 ATOM 86 CD2 LEU P 699 160.641 268.229 245.599 1.00120.68 ATOM 87 N ARG P 700 162.311 270.070 250.467 1.00122.64 ATOM 88 CA ARG P 700 162.043 270.399 251.861 1.00122.64 ATOM 89 C ARG P 700 161.445 271.791 251.988 1.00122.64 ATOM 90 O ARG P 700 160.485 271.986 252.738 1.00122.64 ATOM 91 N LYS P 701 161.986 272.763 251.247 1.00124.08 ATOM 92 CA LYS P 701 161.450 274.122 251.268 1.00124.08 ATOM 93 C LYS P 701 160.053 274.177 250.659 1.00124.08 ATOM 94 O LYS P 701 159.175 274.893 251.164 1.00124.08 ATOM 95 N GLN P 702 159.825 273.411 249.583 1.00127.89 ATOM 96 CA GLN P 702 158.482 273.306 249.018 1.00127.89 ATOM 97 C GLN P 702 157.514 272.631 249.980 1.00127.89 ATOM 98 O GLN P 702 156.318 272.942 249.974 1.00127.89 ATOM 99 N ARG P 703 158.007 271.714 250.813 1.00131.36 ATOM 100 CA ARG P 703 157.150 271.110 251.825 1.00131.36 ATOM 101 C ARG P 703 156.848 272.096 252.949 1.00131.36 ATOM 102 O ARG P 703 155.718 272.151 253.446 1.00131.36 ATOM 103 N LEU P 704 157.838 272.901 253.342 1.00135.64 ATOM 104 CA LEU P 704 157.653 273.850 254.434 1.00135.64 ATOM 105 C LEU P 704 156.817 275.051 254.030 1.00135.64 ATOM 106 O LEU P 704 156.295 275.744 254.908 1.00135.64 ATOM 107 N GLU P 705 156.701 275.335 252.732 1.00140.36 ATOM 108 CA GLU P 705 155.768 276.373 252.307 1.00140.36 ATOM 109 C GLU P 705 154.326 275.908 252.477 1.00140.36 ATOM 110 O GLU P 705 153.472 276.666 252.959 1.00140.36 ATOM 111 N ASP P 706 154.048 274.656 252.095 1.00146.01 ATOM 112 CA ASP P 706 152.738 274.053 252.327 1.00146.01 ATOM 113 C ASP P 706 152.462 273.912 253.818 1.00146.01 ATOM 114 O ASP P 706 151.326 274.099 254.271 1.00146.01 ATOM 115 N LEU P 707 153.498 273.596 254.596 1.00146.54 ATOM 116 CA LEU P 707 153.335 273.447 256.034 1.00146.54 ATOM 117 C LEU P 707 153.093 274.792 256.706 1.00146.54 ATOM 118 O LEU P 707 152.327 274.876 257.675 1.00146.54 ATOM 119 N ALA P 708 153.717 275.853 256.190 1.00149.94 ATOM 120 CA ALA P 708 153.473 277.190 256.715 1.00149.94 ATOM 121 C ALA P 708 152.082 277.678 256.345 1.00149.94 ATOM 122 O ALA P 708 151.437 278.374 257.136 1.00149.94 ATOM 123 N THR P 709 151.604 277.323 255.146 1.00153.06 ATOM 124 CA THR P 709 150.222 277.621 254.777 1.00153.06 ATOM 125 C THR P 709 149.246 276.883 255.689 1.00153.06 ATOM 126 O THR P 709 148.225 277.444 256.112 1.00153.06 ATOM 127 N LEU P 710 149.581 275.637 256.036 1.00155.69 ATOM 128 CA LEU P 710 148.778 274.847 256.965 1.00155.69 ATOM 129 C LEU P 710 148.728 275.483 258.352 1.00155.69 ATOM 130 O LEU P 710 147.665 275.540 258.982 1.00155.69 ATOM 131 N ILE P 711 149.865 275.979 258.838 1.00156.23 ATOM 132 CA ILE P 711 149.900 276.572 260.171 1.00156.23 ATOM 133 C ILE P 711 149.196 277.928 260.183 1.00156.23 ATOM 134 O ILE P 711 148.504 278.275 261.151 1.00156.23 ATOM 135 N GLN P 712 149.303 278.686 259.086 1.00159.19 ATOM 136 CA GLN P 712 148.629 279.981 259.013 1.00159.19 ATOM 137 C GLN P 712 147.114 279.819 258.912 1.00159.19 ATOM 138 O GLN P 712 146.359 280.620 259.483 1.00159.19 ATOM 139 N LYS P 713 146.644 278.773 258.222 1.00163.34 ATOM 140 CA LYS P 713 145.201 278.563 258.156 1.00163.34 ATOM 141 C LYS P 713 144.655 277.928 259.433 1.00163.34 ATOM 142 O LYS P 713 143.485 278.151 259.772 1.00163.34 ATOM 143 N ILE P 714 145.469 277.159 260.165 1.00166.05 ATOM 144 CA ILE P 714 144.997 276.673 261.459 1.00166.05 ATOM 145 C ILE P 714 144.983 277.811 262.480 1.00166.05 ATOM 146 O ILE P 714 144.095 277.869 263.341 1.00166.05 ATOM 147 N TYR P 715 145.906 278.774 262.360 1.00171.19 ATOM 148 CA TYR P 715 145.839 279.954 263.221 1.00171.19 ATOM 149 C TYR P 715 144.646 280.834 262.867 1.00171.19 ATOM 150 O TYR P 715 144.057 281.471 263.751 1.00171.19 ATOM 151 N ARG P 716 144.280 280.892 261.582 1.00176.01 ATOM 152 CA ARG P 716 143.031 281.557 261.218 1.00176.01 ATOM 153 C ARG P 716 141.824 280.808 261.771 1.00176.01 ATOM 154 O ARG P 716 140.807 281.423 262.112 1.00176.01 ATOM 155 N GLY P 717 141.916 279.478 261.860 1.00181.75 ATOM 156 CA GLY P 717 140.814 278.707 262.414 1.00181.75 ATOM 157 C GLY P 717 140.656 278.891 263.911 1.00181.75 ATOM 158 O GLY P 717 139.535 278.940 264.424 1.00181.75 ATOM 159 N TRP P 718 141.774 278.991 264.633 1.00184.31 ATOM 160 CA TRP P 718 141.707 279.269 266.063 1.00184.31 ATOM 161 C TRP P 718 141.284 280.709 266.319 1.00184.31 ATOM 162 O TRP P 718 140.633 281.002 267.331 1.00184.31 ATOM 163 N LYS P 719 141.647 281.619 265.411 1.00191.04 ATOM 164 CA LYS P 719 141.205 283.004 265.528 1.00191.04 ATOM 165 C LYS P 719 139.701 283.126 265.311 1.00191.04 ATOM 166 O LYS P 719 139.006 283.762 266.112 1.00191.04 ATOM 167 N CYS P 720 139.178 282.504 264.249 1.00194.22 ATOM 168 CA CYS P 720 137.741 282.544 263.994 1.00194.22 ATOM 169 C CYS P 720 136.959 281.736 265.022 1.00194.22 ATOM 170 O CYS P 720 135.783 282.027 265.272 1.00194.22 ATOM 171 N ARG P 721 137.587 280.719 265.620 1.00197.09 ATOM 172 CA ARG P 721 136.965 280.026 266.743 1.00197.09 ATOM 173 C ARG P 721 136.906 280.926 267.971 1.00197.09 ATOM 174 O ARG P 721 135.930 280.886 268.730 1.00197.09 ATOM 175 N THR P 722 137.938 281.752 268.175 1.00200.76 ATOM 176 CA THR P 722 137.935 282.695 269.291 1.00200.76 ATOM 177 C THR P 722 136.878 283.780 269.093 1.00200.76 ATOM 178 O THR P 722 136.169 284.145 270.040 1.00200.76 ATOM 179 N HIS P 723 136.737 284.286 267.862 1.00206.15 ATOM 180 CA HIS P 723 135.674 285.247 267.579 1.00206.15 ATOM 181 C HIS P 723 134.296 284.595 267.624 1.00206.15 ATOM 182 O HIS P 723 133.300 285.276 267.893 1.00206.15 ATOM 183 N PHE P 724 134.216 283.288 267.363 1.00210.72 ATOM 184 CA PHE P 724 132.933 282.601 267.452 1.00210.72 ATOM 185 C PHE P 724 132.525 282.373 268.903 1.00210.72 ATOM 186 O PHE P 724 131.341 282.477 269.243 1.00210.72 ATOM 187 N LEU P 725 133.489 282.046 269.770 1.00214.36 ATOM 188 CA LEU P 725 133.188 281.891 271.190 1.00214.36 ATOM 189 C LEU P 725 132.922 283.233 271.856 1.00214.36 ATOM 190 O LEU P 725 132.123 283.309 272.798 1.00214.36 ATOM 191 N LEU P 726 133.588 284.293 271.395 1.00220.19 ATOM 192 CA LEU P 726 133.298 285.629 271.903 1.00220.19 ATOM 193 C LEU P 726 131.928 286.105 271.439 1.00220.19 ATOM 194 O LEU P 726 131.174 286.704 272.217 1.00220.19 ATOM 195 N MET P 727 131.588 285.835 270.173 1.00224.89 ATOM 196 CA MET P 727 130.279 286.203 269.642 1.00224.89 ATOM 197 C MET P 727 129.162 285.404 270.302 1.00224.89 ATOM 198 O MET P 727 128.071 285.937 270.530 1.00224.89 ATOM 199 N LYS P 728 129.422 284.137 270.635 1.00228.03 ATOM 200 CA LYS P 728 128.441 283.349 271.374 1.00228.03 ATOM 201 C LYS P 728 128.324 283.830 272.816 1.00228.03 ATOM 202 O LYS P 728 127.225 283.853 273.383 1.00228.03 TER