Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 4p3x_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): MET 1.A N HIS 6.A NE2 no hydrogen 3.186 N/A HIS 6.A N HIS 2.A O no hydrogen 3.033 N/A HIS 7.A N HIS 3.A O no hydrogen 3.137 N/A MET 8.A N HIS 4.A O no hydrogen 3.072 N/A VAL 9.A N HIS 5.A O no hydrogen 2.862 N/A ASP 10.A N HIS 6.A O no hydrogen 2.923 N/A GLU 11.A N HIS 7.A O no hydrogen 3.014 N/A ILE 12.A N MET 8.A O no hydrogen 2.842 N/A LEU 13.A N VAL 9.A O no hydrogen 3.031 N/A LYS 14.A N ASP 10.A O no hydrogen 2.968 N/A LYS 14.A NZ GLU 18.A OE1 no hydrogen 3.283 N/A LEU 15.A N GLU 11.A O no hydrogen 2.909 N/A LYS 16.A N ILE 12.A O no hydrogen 2.875 N/A LYS 16.A NZ.A ASP 38.A OD1 no hydrogen 2.926 N/A LYS 16.A NZ.A ASP 38.A OD2 no hydrogen 2.715 N/A LYS 16.A NZ.B TYR 21.A O no hydrogen 3.483 N/A LYS 16.A NZ.B ASP 38.A OD1 no hydrogen 3.156 N/A LYS 16.A NZ.B ASP 38.A OD2 no hydrogen 2.914 N/A LYS 17.A N LEU 13.A O no hydrogen 3.216 N/A GLU 18.A N LYS 14.A O no hydrogen 2.900 N/A LYS 19.A N LEU 15.A O no hydrogen 2.885 N/A LYS 19.A NZ LEU 276.A O no hydrogen 2.748 N/A TYR 21.A N LYS 16.A O no hydrogen 2.879 N/A TYR 21.A OH GLU 279.A OE2 no hydrogen 2.644 N/A ILE 22.A N LYS 57.A O no hydrogen 2.934 N/A ILE 23.A N ASP 38.A OD2 no hydrogen 2.862 N/A LEU 24.A N LEU 59.A O no hydrogen 2.933 N/A ALA 25.A N PHE 39.A O no hydrogen 2.977 N/A HIS 26.A N LEU 61.A O no hydrogen 2.819 N/A ASN 27.A N GLY 41.A O no hydrogen 3.113 N/A ASN 27.A ND2 THR 217.A OG1 no hydrogen 2.873 N/A TYR 28.A N HIS 26.A ND1 no hydrogen 3.075 N/A TYR 28.A OH THR 236.A OG1 no hydrogen 2.634 N/A GLN 29.A N HIS 26.A O no hydrogen 3.044 N/A GLN 29.A NE2 MET 264.A O no hydrogen 3.116 N/A GLU 32.A N GLU 32.A OE1 no hydrogen 2.639 N/A LEU 33.A N ILE 30.A O no hydrogen 2.919 N/A GLN 34.A N ILE 30.A O no hydrogen 3.057 N/A GLN 34.A NE2 GLN 29.A O no hydrogen 2.911 N/A GLN 34.A NE2 GLY 239.A O no hydrogen 3.017 N/A ASP 35.A N PRO 31.A O no hydrogen 2.849 N/A ALA 37.A N GLN 34.A O no hydrogen 3.193 N/A ASP 38.A N ILE 23.A O no hydrogen 2.835 N/A PHE 39.A N ILE 23.A O no hydrogen 3.375 N/A GLY 41.A N ALA 25.A O no hydrogen 3.053 N/A ASP 42.A N GLN 45.A OE1 no hydrogen 3.012 N/A GLN 45.A N ASP 42.A OD1 no hydrogen 2.693 N/A LEU 46.A N ASP 42.A O no hydrogen 3.062 N/A ALA 47.A N SER 43.A O no hydrogen 3.054 N/A ARG 48.A N LEU 44.A O no hydrogen 2.912 N/A LYS 49.A N GLN 45.A O no hydrogen 2.954 N/A LYS 49.A NZ GLU 52.A OE1 no hydrogen 2.994 N/A ALA 50.A N LEU 46.A O no hydrogen 3.038 N/A MET 51.A N ARG 48.A O no hydrogen 3.076 N/A GLU 52.A N LYS 49.A O no hydrogen 2.885 N/A LEU 53.A N ALA 50.A O no hydrogen 3.040 N/A GLU 55.A N GLU 55.A OE1 no hydrogen 2.729 N/A LYS 57.A NZ LYS 19.A O no hydrogen 2.565 N/A LYS 57.A NZ GLU 279.A OE2 no hydrogen 3.330 N/A ILE 58.A N LYS 78.A O no hydrogen 2.756 N/A LEU 59.A N ILE 22.A O no hydrogen 2.937 N/A PHE 60.A N ILE 80.A O no hydrogen 2.774 N/A LEU 61.A N LEU 24.A O no hydrogen 2.766 N/A ASP 64.A N ALA 86.A O no hydrogen 2.819 N/A PHE 65.A N ASP 64.A OD1 no hydrogen 2.646 N/A MET 66.A N VAL 63.A O no hydrogen 3.002 N/A ALA 67.A N VAL 63.A O no hydrogen 3.212 N/A GLU 68.A N ASP 64.A O no hydrogen 2.928 N/A LEU 69.A N PHE 65.A O no hydrogen 2.915 N/A VAL 70.A N MET 66.A O no hydrogen 2.940 N/A LYS 71.A N ALA 67.A O no hydrogen 2.962 N/A LYS 71.A NZ PRO 75.A O no hydrogen 3.179 N/A LYS 71.A NZ LYS 77.A O no hydrogen 2.699 N/A ILE 72.A N GLU 68.A O no hydrogen 2.681 N/A LEU 73.A N LEU 69.A O no hydrogen 3.170 N/A ASN 74.A N VAL 70.A O no hydrogen 2.835 N/A ASN 74.A N LYS 71.A O no hydrogen 3.131 N/A ASN 74.A ND2 ALA 47.A O no hydrogen 3.235 N/A ASN 74.A ND2 VAL 70.A O no hydrogen 2.867 N/A LYS 77.A N ASN 74.A O no hydrogen 3.069 N/A LYS 77.A NZ ALA 50.A O no hydrogen 3.390 N/A LYS 77.A NZ ASN 74.A OD1 no hydrogen 3.022 N/A LYS 78.A N LYS 56.A O no hydrogen 2.872 N/A ILE 80.A N ILE 58.A O no hydrogen 2.815 N/A VAL 81.A N PHE 281.A O no hydrogen 2.881 N/A SER 85.A N ASP 83.A OD1 no hydrogen 2.767 N/A SER 85.A OG ASP 83.A OD1 no hydrogen 2.712 N/A ALA 86.A N ASP 83.A O no hydrogen 3.342 N/A THR 87.A N ASN 263.A OD1 no hydrogen 2.800 N/A THR 87.A OG1 ASP 64.A OD1 no hydrogen 3.064 N/A THR 87.A OG1 ASP 64.A OD2 no hydrogen 2.687 N/A ASN 92.A N CYS 88.A O no hydrogen 3.023 N/A ASN 92.A ND2 THR 87.A OG1 no hydrogen 2.857 N/A ARG 93.A N MET 90.A O no hydrogen 3.418 N/A LEU 94.A N ALA 91.A O no hydrogen 3.351 N/A ILE 98.A N THR 95.A OG1 no hydrogen 3.057 N/A ILE 99.A N THR 95.A O no hydrogen 3.199 N/A ARG 100.A N PRO 96.A O no hydrogen 2.984 N/A GLU 101.A N GLU 97.A O no hydrogen 3.036 N/A TYR 102.A N ILE 98.A O no hydrogen 3.177 N/A TYR 102.A N ILE 99.A O no hydrogen 2.951 N/A ARG 103.A N ILE 99.A O no hydrogen 2.874 N/A ARG 103.A NE LEU 124.A O no hydrogen 3.033 N/A ARG 103.A NH2 LEU 124.A O no hydrogen 2.532 N/A GLU 104.A N ARG 100.A O no hydrogen 3.313 N/A LYS 105.A N GLU 101.A O no hydrogen 3.374 N/A PHE 106.A N TYR 102.A O no hydrogen 2.841 N/A ALA 109.A N PHE 106.A O no hydrogen 3.092 N/A VAL 111.A N ASP 126.A OD2 no hydrogen 2.732 N/A VAL 112.A N ILE 147.A O no hydrogen 2.757 N/A LEU 113.A N VAL 127.A O no hydrogen 2.935 N/A TYR 114.A N GLY 149.A O no hydrogen 2.828 N/A TYR 114.A OH GLU 202.A OE2 no hydrogen 2.346 N/A VAL 115.A N CYS 129.A O no hydrogen 2.750 N/A SER 117.A OG TYR 114.A O no hydrogen 2.725 N/A SER 117.A OG VAL 115.A O no hydrogen 3.507 N/A SER 119.A OG GLU 68.A OE1 no hydrogen 2.589 N/A GLU 120.A N GLU 120.A OE1 no hydrogen 2.866 N/A CYS 121.A N THR 118.A OG1 no hydrogen 3.057 N/A CYS 121.A SG LEU 94.A O no hydrogen 3.184 N/A CYS 121.A SG THR 118.A OG1 no hydrogen 3.432 N/A LYS 122.A N THR 118.A O no hydrogen 3.105 N/A LYS 122.A NZ VAL 115.A O no hydrogen 2.729 N/A LYS 122.A NZ SER 117.A OG no hydrogen 3.149 N/A THR 123.A N SER 119.A O no hydrogen 3.307 N/A THR 123.A N GLU 120.A O no hydrogen 3.219 N/A THR 123.A OG1 GLU 120.A O no hydrogen 2.793 N/A LEU 124.A N CYS 121.A O no hydrogen 2.971 N/A ALA 125.A N LYS 122.A O no hydrogen 3.171 N/A ASP 126.A N VAL 111.A O no hydrogen 2.833 N/A VAL 127.A N VAL 111.A O no hydrogen 3.202 N/A ILE 128.A N PRO 296.A O no hydrogen 3.136 N/A CYS 129.A N LEU 113.A O no hydrogen 2.921 N/A THR 130.A N ASN 133.A OD1 no hydrogen 2.754 N/A ASN 133.A N THR 130.A OG1 no hydrogen 3.102 N/A VAL 137.A N ASN 133.A O no hydrogen 2.834 N/A VAL 138.A N ALA 134.A O no hydrogen 2.983 N/A LYS 139.A N VAL 135.A O no hydrogen 2.949 N/A LYS 139.A NZ LYS 161.A O no hydrogen 2.396 N/A LYS 140.A N GLU 136.A O no hydrogen 3.011 N/A LYS 140.A NZ LEU 303.A O no hydrogen 2.601 N/A LEU 141.A N VAL 137.A O no hydrogen 3.177 N/A SER 143.A OG.B VAL 145.A O no hydrogen 2.503 N/A VAL 145.A N SER 143.A OG.B no hydrogen 2.989 N/A VAL 146.A N LYS 165.A O no hydrogen 2.936 N/A ILE 147.A N PRO 110.A O no hydrogen 2.924 N/A PHE 148.A N ILE 167.A O no hydrogen 2.837 N/A GLY 149.A N VAL 112.A O no hydrogen 3.250 N/A ARG 152.A N GLY 173.A O no hydrogen 2.566 N/A ASN 153.A ND2 GLN 179.A OE1 no hydrogen 3.693 N/A ASN 153.A ND2 GLU 202.A O no hydrogen 3.056 N/A LEU 154.A N ASP 151.A OD1 no hydrogen 2.673 N/A GLY 155.A N ASP 151.A O no hydrogen 3.108 N/A GLU 156.A N ARG 152.A O no hydrogen 2.889 N/A TYR 157.A N ASN 153.A O no hydrogen 2.956 N/A VAL 158.A N LEU 154.A O no hydrogen 2.906 N/A ALA 159.A N GLY 155.A O no hydrogen 2.999 N/A GLU 160.A N GLU 156.A O no hydrogen 2.978 N/A LYS 161.A N TYR 157.A O no hydrogen 3.056 N/A THR 162.A N VAL 158.A O no hydrogen 2.936 N/A THR 162.A OG1 VAL 158.A O no hydrogen 2.786 N/A GLY 163.A N ALA 159.A O no hydrogen 2.853 N/A LYS 164.A N THR 162.A OG1 no hydrogen 3.067 N/A LYS 164.A NZ VAL 138.A O no hydrogen 2.711 N/A LYS 164.A NZ LYS 139.A O no hydrogen 3.218 N/A LYS 164.A NZ LEU 141.A O no hydrogen 2.421 N/A LYS 164.A NZ SER 143.A O no hydrogen 2.875 N/A LYS 165.A N SER 144.A O no hydrogen 2.853 N/A ILE 167.A N VAL 146.A O no hydrogen 2.835 N/A ILE 169.A N PHE 148.A O no hydrogen 2.877 N/A GLY 173.A N PRO 170.A O no hydrogen 2.995 N/A HIS 174.A ND1 ASN 172.A O no hydrogen 3.019 N/A CYS 175.A SG HIS 178.A ND1 no hydrogen 3.220 N/A HIS 178.A N CYS 175.A O no hydrogen 3.332 N/A HIS 178.A NE2 THR 236.A OG1 no hydrogen 2.654 N/A GLN 179.A N PRO 176.A O no hydrogen 3.258 N/A GLN 179.A NE2 CYS 175.A O no hydrogen 2.611 N/A GLN 179.A NE2 GLU 202.A O no hydrogen 3.669 N/A ASN 181.A N GLU 257.A OE2 no hydrogen 2.745 N/A GLU 183.A N GLU 183.A OE1 no hydrogen 3.095 N/A SER 184.A N ASN 181.A O no hydrogen 2.965 N/A SER 184.A OG ASN 181.A O no hydrogen 3.348 N/A SER 184.A OG GLU 257.A OE2 no hydrogen 2.509 N/A ILE 185.A N ALA 182.A O no hydrogen 3.020 N/A ASP 186.A N ALA 182.A O no hydrogen 3.352 N/A ALA 187.A N GLU 183.A O no hydrogen 2.933 N/A VAL 188.A N SER 184.A O no hydrogen 3.149 N/A ARG 189.A N ILE 185.A O no hydrogen 2.891 N/A ARG 189.A NH1 LYS 210.A O no hydrogen 2.723 N/A ARG 189.A NH1 ASP 212.A OD2 no hydrogen 2.996 N/A ARG 189.A NH2 ASP 212.A OD2 no hydrogen 2.864 N/A LYS 190.A N ASP 186.A O no hydrogen 3.304 N/A LYS 191.A N ALA 187.A O no hydrogen 3.093 N/A TYR 192.A N VAL 188.A O no hydrogen 2.783 N/A ALA 195.A N TYR 192.A O no hydrogen 3.064 N/A LYS 196.A N ILE 231.A O no hydrogen 3.057 N/A LYS 196.A NZ ASP 227.A OD1 no hydrogen 2.464 N/A VAL 197.A N ASP 212.A OD2 no hydrogen 2.743 N/A ILE 198.A N VAL 233.A O no hydrogen 2.806 N/A VAL 199.A N TYR 213.A O no hydrogen 2.905 N/A HIS 200.A N GLY 235.A O no hydrogen 3.115 N/A GLU 202.A N HIS 200.A ND1 no hydrogen 3.028 N/A CYS 203.A N HIS 200.A O no hydrogen 2.949 N/A CYS 203.A SG HIS 178.A O no hydrogen 3.578 N/A CYS 203.A SG HIS 200.A O no hydrogen 3.160 N/A CYS 203.A SG GLY 235.A O no hydrogen 3.651 N/A LYS 205.A NZ GLU 160.A OE1 no hydrogen 2.687 N/A LYS 205.A NZ ASP 209.A OD2 no hydrogen 3.072 N/A ARG 208.A N PRO 204.A O no hydrogen 3.002 N/A ARG 208.A NH1 PRO 201.A O no hydrogen 3.550 N/A ARG 208.A NH1 CYS 203.A O no hydrogen 2.764 N/A ARG 208.A NH2 GLU 156.A OE2 no hydrogen 2.544 N/A ARG 208.A NH2 GLU 160.A OE1 no hydrogen 3.368 N/A ASP 209.A N LYS 205.A O no hydrogen 2.774 N/A LYS 210.A N VAL 207.A O no hydrogen 3.145 N/A LYS 210.A NZ ASP 186.A OD1 no hydrogen 3.065 N/A LYS 210.A NZ ASP 186.A OD2 no hydrogen 2.833 N/A ALA 211.A N ARG 208.A O no hydrogen 3.252 N/A ASP 212.A N VAL 197.A O no hydrogen 2.829 N/A TYR 213.A N VAL 197.A O no hydrogen 3.045 N/A TYR 213.A OH ASP 227.A OD1 no hydrogen 2.454 N/A GLY 215.A N VAL 199.A O no hydrogen 2.908 N/A SER 216.A N GLN 219.A OE1 no hydrogen 2.930 N/A GLN 219.A N SER 216.A OG no hydrogen 3.024 N/A MET 220.A N SER 216.A O no hydrogen 2.887 N/A GLU 221.A N.A THR 217.A O no hydrogen 3.152 N/A GLU 221.A N.B THR 217.A O no hydrogen 3.193 N/A LYS 222.A N GLN 219.A O no hydrogen 3.139 N/A LYS 222.A NZ GLU 225.A OE1 no hydrogen 3.114 N/A ILE 223.A N GLN 219.A O no hydrogen 3.183 N/A ILE 223.A N MET 220.A O no hydrogen 3.288 N/A GLU 225.A N LYS 222.A O no hydrogen 2.938 N/A ARG 226.A N ILE 223.A O no hydrogen 3.098 N/A ASP 227.A N ILE 223.A O no hydrogen 2.909 N/A SER 229.A N.A ASP 227.A OD2 no hydrogen 2.942 N/A SER 229.A N.B ASP 227.A OD2 no hydrogen 2.939 N/A SER 229.A OG.A ASP 227.A OD2 no hydrogen 2.706 N/A SER 229.A OG.B ASP 194.A O no hydrogen 3.193 N/A SER 229.A OG.B ILE 231.A O no hydrogen 2.872 N/A ILE 231.A N SER 229.A OG.B no hydrogen 3.368 N/A PHE 232.A N GLU 252.A O no hydrogen 2.832 N/A VAL 233.A N LYS 196.A O no hydrogen 2.836 N/A ILE 234.A N VAL 254.A O no hydrogen 2.744 N/A GLY 235.A N ILE 198.A O no hydrogen 2.739 N/A THR 236.A OG1 TYR 28.A OH no hydrogen 2.634 N/A THR 236.A OG1 HIS 178.A NE2 no hydrogen 2.654 N/A GLU 237.A N THR 236.A OG1 no hydrogen 2.669 N/A ILE 238.A N ALA 259.A O no hydrogen 2.900 N/A GLY 239.A N GLU 237.A OE1 no hydrogen 2.715 N/A MET 240.A N GLU 237.A O no hydrogen 2.978 N/A ILE 241.A N ILE 238.A O no hydrogen 2.985 N/A HIS 242.A NE2 ASP 35.A OD1 no hydrogen 2.881 N/A LYS 243.A NZ ASN 27.A OD1 no hydrogen 2.915 N/A LYS 243.A NZ VAL 40.A O no hydrogen 3.163 N/A LYS 243.A NZ GLU 221.A OE1.B no hydrogen 3.429 N/A LYS 243.A NZ GLU 221.A OE2.A no hydrogen 2.494 N/A LYS 243.A NZ GLU 221.A OE2.B no hydrogen 2.679 N/A LEU 244.A N MET 240.A O no hydrogen 2.924 N/A LYS 245.A N ILE 241.A O no hydrogen 2.951 N/A LYS 245.A NZ GLU 252.A OE2.A no hydrogen 2.900 N/A LYS 246.A N HIS 242.A O no hydrogen 3.097 N/A LYS 246.A NZ.A ASP 35.A OD1 no hydrogen 2.864 N/A LYS 246.A NZ.B ASP 35.A OD1 no hydrogen 2.758 N/A LYS 247.A N LYS 243.A O no hydrogen 3.182 N/A LYS 247.A NZ GLU 221.A O.A no hydrogen 3.079 N/A LYS 247.A NZ GLU 221.A O.B no hydrogen 2.652 N/A LYS 247.A NZ GLU 225.A OE2 no hydrogen 2.646 N/A PHE 248.A N LEU 244.A O no hydrogen 2.916 N/A ASP 250.A N ASP 250.A OD1 no hydrogen 2.629 N/A ARG 251.A N PHE 248.A O no hydrogen 3.093 N/A ARG 251.A NE ASP 250.A OD2 no hydrogen 3.018 N/A ARG 251.A NH1 ASP 227.A O no hydrogen 2.901 N/A ARG 251.A NH1 SER 229.A O.A no hydrogen 2.860 N/A ARG 251.A NH1 SER 229.A O.B no hydrogen 2.915 N/A ARG 251.A NH2 PRO 224.A O no hydrogen 2.837 N/A GLU 252.A N ARG 230.A O no hydrogen 2.681 N/A PHE 253.A N GLU 252.A OE2.A no hydrogen 2.928 N/A VAL 254.A N PHE 232.A O no hydrogen 2.903 N/A LEU 256.A N ILE 234.A O no hydrogen 2.868 N/A CYS 261.A N GLU 237.A OE2 no hydrogen 2.815 N/A LYS 265.A N CYS 261.A O no hydrogen 3.132 N/A LYS 265.A NZ TYR 28.A O no hydrogen 2.798 N/A LYS 265.A NZ GLU 237.A OE2 no hydrogen 2.563 N/A LYS 266.A N ASN 263.A O no hydrogen 3.061 N/A LYS 266.A NZ SER 85.A O no hydrogen 3.017 N/A LYS 266.A NZ SER 85.A OG no hydrogen 3.086 N/A LYS 266.A NZ ASN 263.A OD1 no hydrogen 2.922 N/A ASN 267.A ND2 GLN 29.A OE1 no hydrogen 2.944 N/A ASN 267.A ND2 GLY 62.A O no hydrogen 3.048 N/A THR 268.A N ASN 271.A OD1 no hydrogen 2.764 N/A GLU 270.A N GLU 270.A OE1.A no hydrogen 2.767 N/A GLU 270.A N GLU 270.A OE1.B no hydrogen 2.762 N/A ASN 271.A N THR 268.A OG1 no hydrogen 3.046 N/A ASN 271.A ND2 LYS 266.A O no hydrogen 2.867 N/A THR 272.A N THR 268.A O no hydrogen 2.948 N/A THR 272.A OG1 THR 268.A O no hydrogen 2.732 N/A LEU 273.A N LEU 269.A O no hydrogen 2.946 N/A HIS 274.A N GLU 270.A O no hydrogen 3.051 N/A ALA 275.A N ASN 271.A O no hydrogen 3.039 N/A LEU 276.A N THR 272.A O no hydrogen 3.195 N/A GLN 277.A N LEU 273.A O no hydrogen 2.982 N/A THR 278.A N HIS 274.A O no hydrogen 2.983 N/A THR 278.A OG1 HIS 274.A O no hydrogen 2.753 N/A THR 278.A OG1 SER 280.A OG no hydrogen 2.735 N/A SER 280.A N ALA 275.A O no hydrogen 3.298 N/A SER 280.A OG THR 278.A OG1 no hydrogen 2.735 N/A PHE 281.A N VAL 81.A O no hydrogen 2.837 N/A VAL 283.A N VAL 79.A O no hydrogen 2.776 N/A VAL 289.A N PRO 286.A O no hydrogen 2.820 N/A ILE 290.A N PRO 286.A O no hydrogen 3.163 N/A GLU 291.A N LYS 287.A O no hydrogen 2.944 N/A LYS 292.A N GLU 288.A O no hydrogen 3.045 N/A LYS 292.A NZ GLU 288.A OE2 no hydrogen 3.170 N/A ALA 293.A N VAL 289.A O no hydrogen 2.836 N/A LYS 294.A N ILE 290.A O no hydrogen 3.158 N/A LYS 295.A N LYS 292.A O no hydrogen 3.301 N/A LEU 298.A N LYS 294.A O no hydrogen 2.866 N/A ARG 299.A N LYS 295.A O no hydrogen 2.940 N/A ARG 299.A NH1 GLU 302.A OE1 no hydrogen 3.025 N/A MET 300.A N PRO 296.A O no hydrogen 3.121 N/A PHE 301.A N ILE 297.A O no hydrogen 2.971 N/A GLU 302.A N LEU 298.A O no hydrogen 2.906 N/A LEU 303.A N ARG 299.A O no hydrogen 3.055 N/A MET 304.A N PHE 301.A O no hydrogen 3.293 N/A