HEADER METAL BINDING PROTEIN 20-APR-10 3MMK TITLE The structural basis for partial redundancy in a class of TITLE 2 transcription factors, the lim-homeodomain proteins, in neural cell TITLE 3 type specification COMPND MOL_ID: 1; COMPND 2 MOLECULE: Fusion of LIM/homeobox protein Lhx4, linker, Insulin gene COMPND 3 enhancer protein ISL-2; COMPND 4 CHAIN: A, B; COMPND 5 UNP RESIDUES 24-149 AND ; COMPND 6 ENGINEERED: YES; COMPND 7 Fusion of Lhx4 residues 24-149 to Isl2 residues 272-301 via a glycine COMPND 8 OTHER_DETAILS: rich linker with sequence GGSGGHMGSGG; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.16 ANGSTORMS DBREF 3MMK B 24 149 UNP P53776 LHX4_MOUSE 24 149 DBREF 3MMK B 261 271 PDB 3MMK 3MMK 261 271 DBREF 3MMK B 272 301 UNP Q9CXV0 ISL2_MOUSE 272 301 SEQRES 1 B 30 GLN ILE PRO GLN CYS ALA GLY CYS ASN GLN HIS ILE LEU SEQRES 2 B 30 ASP LYS PHE ILE LEU LYS VAL LEU ASP ARG HIS TRP HIS SEQRES 3 B 30 SER SER CYS LEU ATOM 1 N GLN B 26 10.871 17.928 36.709 1.00 76.38 ATOM 2 CA GLN B 26 12.234 18.247 37.120 1.00 75.62 ATOM 3 C GLN B 26 12.411 18.052 38.622 1.00 74.31 ATOM 4 O GLN B 26 11.461 18.204 39.391 1.00 76.95 ATOM 5 CB GLN B 26 12.593 19.684 36.730 1.00 73.19 ATOM 6 N ILE B 27 13.625 17.706 39.038 1.00 68.48 ATOM 7 CA ILE B 27 13.912 17.547 40.459 1.00 63.92 ATOM 8 C ILE B 27 14.304 18.875 41.093 1.00 61.43 ATOM 9 O ILE B 27 15.254 19.525 40.653 1.00 60.62 ATOM 10 CB ILE B 27 15.023 16.519 40.717 1.00 66.16 ATOM 11 CG1 ILE B 27 14.482 15.102 40.544 1.00 71.30 ATOM 12 CG2 ILE B 27 15.582 16.686 42.119 1.00 64.40 ATOM 13 CD1 ILE B 27 15.092 14.110 41.502 1.00 74.48 ATOM 14 N PRO B 28 13.564 19.283 42.132 1.00 58.45 ATOM 15 CA PRO B 28 13.820 20.541 42.838 1.00 57.95 ATOM 16 C PRO B 28 14.973 20.396 43.819 1.00 57.67 ATOM 17 O PRO B 28 15.178 19.312 44.364 1.00 50.73 ATOM 18 CB PRO B 28 12.521 20.777 43.623 1.00 59.04 ATOM 19 CG PRO B 28 11.559 19.701 43.182 1.00 58.59 ATOM 20 CD PRO B 28 12.390 18.583 42.670 1.00 54.65 ATOM 21 N GLN B 29 15.716 21.477 44.034 1.00 57.81 ATOM 22 CA GLN B 29 16.698 21.522 45.107 1.00 52.33 ATOM 23 C GLN B 29 16.031 22.057 46.368 1.00 53.56 ATOM 24 O GLN B 29 15.254 23.013 46.316 1.00 57.55 ATOM 25 CB GLN B 29 17.889 22.397 44.721 1.00 52.58 ATOM 26 CG GLN B 29 18.601 21.926 43.468 1.00 53.56 ATOM 27 CD GLN B 29 19.839 22.740 43.151 1.00 54.56 ATOM 28 OE1 GLN B 29 20.138 23.000 41.987 1.00 56.51 ATOM 29 NE2 GLN B 29 20.569 23.143 44.184 1.00 56.74 ATOM 30 N CYS B 30 16.337 21.429 47.497 1.00 48.40 ATOM 31 CA CYS B 30 15.738 21.782 48.775 1.00 46.56 ATOM 32 C CYS B 30 16.011 23.240 49.154 1.00 47.65 ATOM 33 O CYS B 30 17.141 23.710 49.064 1.00 47.41 ATOM 34 CB CYS B 30 16.264 20.842 49.862 1.00 45.78 ATOM 35 SG CYS B 30 15.549 21.106 51.491 1.00 51.28 ATOM 36 N ALA B 31 14.971 23.956 49.574 1.00 47.42 ATOM 37 CA ALA B 31 15.129 25.346 49.993 1.00 52.73 ATOM 38 C ALA B 31 16.043 25.444 51.208 1.00 52.17 ATOM 39 O ALA B 31 16.710 26.458 51.415 1.00 46.99 ATOM 40 CB ALA B 31 13.776 25.975 50.293 1.00 55.07 ATOM 41 N GLY B 32 16.074 24.378 52.002 1.00 53.54 ATOM 42 CA GLY B 32 16.880 24.339 53.207 1.00 53.61 ATOM 43 C GLY B 32 18.342 24.013 52.965 1.00 55.07 ATOM 44 O GLY B 32 19.220 24.817 53.278 1.00 56.03 ATOM 45 N CYS B 33 18.606 22.837 52.403 1.00 50.12 ATOM 46 CA CYS B 33 19.975 22.343 52.257 1.00 49.89 ATOM 47 C CYS B 33 20.513 22.523 50.841 1.00 49.44 ATOM 48 O CYS B 33 21.688 22.271 50.575 1.00 47.41 ATOM 49 CB CYS B 33 20.034 20.862 52.625 1.00 48.28 ATOM 50 SG CYS B 33 19.365 19.792 51.326 1.00 50.40 ATOM 51 N ASN B 34 19.635 22.930 49.932 1.00 51.47 ATOM 52 CA ASN B 34 20.001 23.180 48.539 1.00 50.64 ATOM 53 C ASN B 34 20.463 21.948 47.760 1.00 48.57 ATOM 54 O ASN B 34 21.007 22.075 46.666 1.00 49.29 ATOM 55 CB ASN B 34 21.048 24.294 48.438 1.00 54.60 ATOM 56 CG ASN B 34 21.121 24.900 47.047 1.00 58.09 ATOM 57 OD1 ASN B 34 20.096 25.134 46.405 1.00 57.23 ATOM 58 ND2 ASN B 34 22.336 25.155 46.574 1.00 59.30 ATOM 59 N GLN B 35 20.250 20.759 48.319 1.00 47.82 ATOM 60 CA GLN B 35 20.532 19.523 47.591 1.00 48.73 ATOM 61 C GLN B 35 19.297 19.067 46.828 1.00 46.87 ATOM 62 O GLN B 35 18.172 19.405 47.198 1.00 46.19 ATOM 63 CB GLN B 35 20.984 18.406 48.539 1.00 50.18 ATOM 64 CG GLN B 35 22.255 18.715 49.306 1.00 55.57 ATOM 65 CD GLN B 35 23.341 19.286 48.418 1.00 61.08 ATOM 66 OE1 GLN B 35 23.731 18.676 47.421 1.00 60.24 ATOM 67 NE2 GLN B 35 23.838 20.465 48.777 1.00 65.11 ATOM 68 N HIS B 36 19.511 18.296 45.767 1.00 48.42 ATOM 69 CA HIS B 36 18.405 17.720 45.007 1.00 51.48 ATOM 70 C HIS B 36 17.616 16.734 45.864 1.00 48.61 ATOM 71 O HIS B 36 18.190 15.849 46.503 1.00 49.47 ATOM 72 CB HIS B 36 18.918 17.027 43.740 1.00 54.00 ATOM 73 CG HIS B 36 19.330 17.976 42.658 1.00 57.81 ATOM 74 ND1 HIS B 36 20.650 18.238 42.358 1.00 60.14 ATOM 75 CD2 HIS B 36 18.594 18.730 41.807 1.00 57.55 ATOM 76 CE1 HIS B 36 20.709 19.110 41.367 1.00 61.15 ATOM 77 NE2 HIS B 36 19.475 19.425 41.015 1.00 58.97 ATOM 78 N ILE B 37 16.299 16.896 45.878 1.00 40.46 ATOM 79 CA ILE B 37 15.429 16.045 46.674 1.00 45.11 ATOM 80 C ILE B 37 15.091 14.765 45.918 1.00 48.27 ATOM 81 O ILE B 37 14.337 14.792 44.949 1.00 44.02 ATOM 82 CB ILE B 37 14.124 16.771 47.038 1.00 43.43 ATOM 83 CG1 ILE B 37 14.430 18.072 47.783 1.00 41.46 ATOM 84 CG2 ILE B 37 13.229 15.868 47.876 1.00 43.79 ATOM 85 CD1 ILE B 37 13.202 18.917 48.055 1.00 45.00 ATOM 86 N LEU B 38 15.657 13.646 46.360 1.00 50.56 ATOM 87 CA LEU B 38 15.403 12.362 45.715 1.00 54.13 ATOM 88 C LEU B 38 14.274 11.597 46.405 1.00 53.39 ATOM 89 O LEU B 38 13.897 10.502 45.980 1.00 53.92 ATOM 90 CB LEU B 38 16.678 11.517 45.669 1.00 54.46 ATOM 91 CG LEU B 38 17.817 12.079 44.814 1.00 53.57 ATOM 92 CD1 LEU B 38 19.037 11.178 44.895 1.00 55.53 ATOM 93 CD2 LEU B 38 17.372 12.246 43.370 1.00 52.07 ATOM 94 N ASP B 39 13.732 12.189 47.464 1.00 46.47 ATOM 95 CA ASP B 39 12.624 11.593 48.196 1.00 46.04 ATOM 96 C ASP B 39 11.384 11.484 47.316 1.00 50.32 ATOM 97 O ASP B 39 11.125 12.348 46.475 1.00 49.13 ATOM 98 CB ASP B 39 12.301 12.416 49.446 1.00 49.02 ATOM 99 CG ASP B 39 13.434 12.414 50.460 1.00 54.99 ATOM 100 OD1 ASP B 39 13.270 13.030 51.535 1.00 57.89 ATOM 101 OD2 ASP B 39 14.487 11.801 50.186 1.00 57.20 ATOM 102 N LYS B 40 10.619 10.417 47.515 1.00 50.02 ATOM 103 CA LYS B 40 9.376 10.222 46.781 1.00 50.53 ATOM 104 C LYS B 40 8.393 11.345 47.105 1.00 46.86 ATOM 105 O LYS B 40 7.775 11.915 46.206 1.00 51.50 ATOM 106 CB LYS B 40 8.773 8.853 47.111 1.00 50.94 ATOM 107 CG LYS B 40 7.485 8.527 46.372 1.00 53.06 ATOM 108 CD LYS B 40 7.724 8.271 44.896 1.00 53.73 ATOM 109 CE LYS B 40 6.470 7.703 44.242 1.00 54.45 ATOM 110 NZ LYS B 40 6.606 7.595 42.765 1.00 55.11 ATOM 111 N PHE B 41 8.257 11.661 48.391 1.00 42.68 ATOM 112 CA PHE B 41 7.414 12.769 48.838 1.00 44.56 ATOM 113 C PHE B 41 8.222 14.065 48.916 1.00 45.69 ATOM 114 O PHE B 41 9.265 14.116 49.565 1.00 43.77 ATOM 115 CB PHE B 41 6.806 12.472 50.213 1.00 43.84 ATOM 116 CG PHE B 41 5.566 11.621 50.168 1.00 45.92 ATOM 117 CD1 PHE B 41 4.473 11.932 50.960 1.00 38.69 ATOM 118 CD2 PHE B 41 5.495 10.505 49.349 1.00 46.90 ATOM 119 CE1 PHE B 41 3.333 11.153 50.935 1.00 38.16 ATOM 120 CE2 PHE B 41 4.351 9.723 49.316 1.00 44.85 ATOM 121 CZ PHE B 41 3.271 10.047 50.107 1.00 35.91 ATOM 122 N ILE B 42 7.729 15.106 48.256 1.00 44.68 ATOM 123 CA ILE B 42 8.384 16.409 48.265 1.00 48.89 ATOM 124 C ILE B 42 7.485 17.459 48.909 1.00 48.27 ATOM 125 O ILE B 42 6.350 17.663 48.476 1.00 54.52 ATOM 126 CB ILE B 42 8.721 16.868 46.839 1.00 53.27 ATOM 127 CG1 ILE B 42 9.553 15.805 46.122 1.00 54.78 ATOM 128 CG2 ILE B 42 9.449 18.205 46.861 1.00 55.61 ATOM 129 CD1 ILE B 42 9.963 16.202 44.728 1.00 57.24 ATOM 130 N LEU B 43 7.988 18.123 49.944 1.00 46.43 ATOM 131 CA LEU B 43 7.222 19.183 50.600 1.00 48.43 ATOM 132 C LEU B 43 7.351 20.507 49.858 1.00 48.16 ATOM 133 O LEU B 43 8.439 20.900 49.448 1.00 48.24 ATOM 134 CB LEU B 43 7.657 19.359 52.058 1.00 51.54 ATOM 135 CG LEU B 43 6.924 18.511 53.098 1.00 54.00 ATOM 136 CD1 LEU B 43 6.794 17.081 52.628 1.00 54.96 ATOM 137 CD2 LEU B 43 7.650 18.572 54.430 1.00 57.63 ATOM 138 N LYS B 44 6.230 21.191 49.679 1.00 48.01 ATOM 139 CA LYS B 44 6.256 22.502 49.057 1.00 54.35 ATOM 140 C LYS B 44 5.679 23.536 50.013 1.00 56.45 ATOM 141 O LYS B 44 4.597 23.348 50.573 1.00 56.34 ATOM 142 CB LYS B 44 5.494 22.507 47.731 1.00 57.94 ATOM 143 CG LYS B 44 5.739 23.756 46.900 1.00 63.68 ATOM 144 CD LYS B 44 4.910 23.768 45.628 1.00 66.95 ATOM 145 CE LYS B 44 5.261 24.975 44.767 1.00 67.28 ATOM 146 NZ LYS B 44 4.383 25.094 43.572 1.00 68.99 ATOM 147 N VAL B 45 6.426 24.615 50.211 1.00 54.53 ATOM 148 CA VAL B 45 5.997 25.707 51.068 1.00 51.46 ATOM 149 C VAL B 45 6.127 27.014 50.300 1.00 56.93 ATOM 150 O VAL B 45 7.235 27.479 50.040 1.00 61.71 ATOM 151 CB VAL B 45 6.843 25.770 52.351 1.00 49.18 ATOM 152 CG1 VAL B 45 6.409 26.938 53.220 1.00 54.57 ATOM 153 CG2 VAL B 45 6.728 24.465 53.120 1.00 43.93 ATOM 154 N LEU B 46 4.988 27.589 49.923 1.00 59.86 ATOM 155 CA LEU B 46 4.959 28.849 49.180 1.00 63.78 ATOM 156 C LEU B 46 5.963 28.891 48.026 1.00 63.71 ATOM 157 O LEU B 46 6.896 29.696 48.032 1.00 66.80 ATOM 158 CB LEU B 46 5.191 30.036 50.122 1.00 64.40 ATOM 159 N ASP B 47 5.766 28.019 47.042 1.00 61.37 ATOM 160 CA ASP B 47 6.601 27.994 45.841 1.00 63.93 ATOM 161 C ASP B 47 8.010 27.433 46.069 1.00 62.67 ATOM 162 O ASP B 47 8.835 27.430 45.155 1.00 61.35 ATOM 163 CB ASP B 47 6.680 29.386 45.204 1.00 66.09 ATOM 164 N ARG B 48 8.282 26.957 47.282 1.00 61.28 ATOM 165 CA ARG B 48 9.589 26.379 47.594 1.00 59.06 ATOM 166 C ARG B 48 9.482 24.918 48.029 1.00 50.04 ATOM 167 O ARG B 48 8.559 24.540 48.751 1.00 45.29 ATOM 168 CB ARG B 48 10.299 27.193 48.676 1.00 60.40 ATOM 169 CG ARG B 48 10.369 28.679 48.381 1.00 63.56 ATOM 170 CD ARG B 48 11.257 29.389 49.384 1.00 63.25 ATOM 171 NE ARG B 48 12.671 29.169 49.098 1.00 63.22 ATOM 172 CZ ARG B 48 13.663 29.568 49.888 1.00 60.86 ATOM 173 NH1 ARG B 48 13.398 30.204 51.024 1.00 55.31 ATOM 174 NH2 ARG B 48 14.921 29.326 49.545 1.00 60.84 ATOM 175 N HIS B 49 10.441 24.106 47.596 1.00 46.07 ATOM 176 CA HIS B 49 10.432 22.675 47.888 1.00 49.28 ATOM 177 C HIS B 49 11.432 22.284 48.976 1.00 49.43 ATOM 178 O HIS B 49 12.545 22.801 49.024 1.00 48.89 ATOM 179 CB HIS B 49 10.693 21.881 46.608 1.00 48.84 ATOM 180 CG HIS B 49 9.673 22.120 45.540 1.00 57.40 ATOM 181 ND1 HIS B 49 9.832 23.074 44.558 1.00 63.75 ATOM 182 CD2 HIS B 49 8.470 21.541 45.311 1.00 58.15 ATOM 183 CE1 HIS B 49 8.776 23.065 43.763 1.00 65.07 ATOM 184 NE2 HIS B 49 7.935 22.144 44.198 1.00 62.51 ATOM 185 N TRP B 50 11.026 21.362 49.843 1.00 49.65 ATOM 186 CA TRP B 50 11.848 20.945 50.974 1.00 49.87 ATOM 187 C TRP B 50 11.968 19.429 51.083 1.00 49.79 ATOM 188 O TRP B 50 11.054 18.694 50.698 1.00 46.84 ATOM 189 CB TRP B 50 11.243 21.456 52.282 1.00 48.59 ATOM 190 CG TRP B 50 11.435 22.914 52.534 1.00 53.60 ATOM 191 CD1 TRP B 50 10.760 23.946 51.948 1.00 53.90 ATOM 192 CD2 TRP B 50 12.352 23.506 53.459 1.00 54.42 ATOM 193 NE1 TRP B 50 11.211 25.145 52.443 1.00 55.47 ATOM 194 CE2 TRP B 50 12.187 24.902 53.373 1.00 57.61 ATOM 195 CE3 TRP B 50 13.300 22.990 54.346 1.00 55.57 ATOM 196 CZ2 TRP B 50 12.936 25.789 54.143 1.00 60.24 ATOM 197 CZ3 TRP B 50 14.041 23.872 55.110 1.00 58.11 ATOM 198 CH2 TRP B 50 13.856 25.256 55.004 1.00 59.00 ATOM 199 N HIS B 51 13.097 18.971 51.617 1.00 46.03 ATOM 200 CA HIS B 51 13.183 17.633 52.184 1.00 43.83 ATOM 201 C HIS B 51 12.307 17.659 53.420 1.00 46.74 ATOM 202 O HIS B 51 12.293 18.657 54.143 1.00 47.87 ATOM 203 CB HIS B 51 14.613 17.314 52.629 1.00 42.23 ATOM 204 CG HIS B 51 15.494 16.788 51.540 1.00 46.45 ATOM 205 ND1 HIS B 51 16.610 17.464 51.096 1.00 46.87 ATOM 206 CD2 HIS B 51 15.439 15.641 50.822 1.00 44.89 ATOM 207 CE1 HIS B 51 17.199 16.761 50.145 1.00 46.33 ATOM 208 NE2 HIS B 51 16.507 15.652 49.959 1.00 43.60 ATOM 209 N SER B 52 11.580 16.577 53.671 1.00 44.05 ATOM 210 CA SER B 52 10.803 16.460 54.898 1.00 50.63 ATOM 211 C SER B 52 11.728 16.587 56.103 1.00 52.19 ATOM 212 O SER B 52 11.355 17.151 57.134 1.00 56.32 ATOM 213 CB SER B 52 10.079 15.113 54.951 1.00 60.87 ATOM 214 OG SER B 52 9.118 15.004 53.918 1.00 67.63 ATOM 215 N SER B 53 12.940 16.062 55.958 1.00 48.37 ATOM 216 CA SER B 53 13.914 16.045 57.043 1.00 53.01 ATOM 217 C SER B 53 14.587 17.399 57.241 1.00 55.65 ATOM 218 O SER B 53 15.259 17.621 58.247 1.00 59.33 ATOM 219 CB SER B 53 14.976 14.976 56.780 1.00 58.18 ATOM 220 OG SER B 53 14.377 13.702 56.614 1.00 64.11 ATOM 221 N CYS B 54 14.415 18.302 56.281 1.00 51.11 ATOM 222 CA CYS B 54 15.007 19.629 56.394 1.00 48.58 ATOM 223 C CYS B 54 13.995 20.654 56.882 1.00 49.20 ATOM 224 O CYS B 54 14.368 21.730 57.342 1.00 52.67 ATOM 225 CB CYS B 54 15.625 20.067 55.068 1.00 43.61 ATOM 226 SG CYS B 54 17.081 19.106 54.612 1.00 53.14 ATOM 227 N LEU B 55 12.715 20.310 56.793 1.00 52.46 ATOM 228 CA LEU B 55 11.662 21.200 57.260 1.00 57.33 ATOM 229 C LEU B 55 11.351 20.938 58.727 1.00 57.37 ATOM 230 O LEU B 55 10.310 20.374 59.062 1.00 55.86 ATOM 231 CB LEU B 55 10.400 21.048 56.409 1.00 59.71 ATOM 232 CG LEU B 55 9.395 22.195 56.540 1.00 60.73 ATOM 233 CD1 LEU B 55 10.099 23.531 56.391 1.00 64.11 ATOM 234 CD2 LEU B 55 8.279 22.060 55.518 1.00 62.31 ATOM 235 ZN ZN B 868 17.231 19.416 52.328 0.80 54.06 ATOM 236 CL CL B 170 5.776 22.616 41.176 1.00 76.63 TER