Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 1xry_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): THR 5.A N GLU 285.A OE2 no hydrogen 3.191 N/A GLN 6.A N GLU 285.A OE1 no hydrogen 2.948 N/A GLN 6.A NE2 THR 5.A OG1 no hydrogen 3.062 N/A GLN 7.A N GLN 7.A OE1 no hydrogen 2.752 N/A GLN 7.A NE2 ILE 4.A O no hydrogen 3.208 N/A VAL 10.A N GLN 6.A O no hydrogen 2.925 N/A THR 11.A N GLN 7.A O no hydrogen 2.990 N/A THR 11.A OG1 GLN 7.A O no hydrogen 2.559 N/A THR 11.A OG1 ALA 8.A O no hydrogen 3.555 N/A ALA 12.A N THR 9.A O no hydrogen 3.100 N/A TRP 13.A N THR 9.A O no hydrogen 2.962 N/A LEU 14.A N VAL 10.A O no hydrogen 2.763 N/A GLN 16.A N TRP 13.A O no hydrogen 2.795 N/A GLN 16.A NE2 ASN 135.A OD1 no hydrogen 3.483 N/A VAL 17.A N LEU 14.A O no hydrogen 3.196 N/A ASP 18.A N GLU 127.A OE2 no hydrogen 2.818 N/A SER 20.A N ASP 18.A OD2 no hydrogen 2.887 N/A GLN 21.A N ASP 18.A O no hydrogen 3.030 N/A ILE 22.A N ASP 18.A O no hydrogen 3.310 N/A THR 23.A N ALA 19.A O no hydrogen 3.014 N/A THR 23.A OG1 ALA 19.A O no hydrogen 3.238 N/A THR 23.A OG1 SER 20.A O no hydrogen 3.195 N/A GLY 24.A N SER 20.A O no hydrogen 2.922 N/A THR 25.A N GLN 21.A O no hydrogen 3.010 N/A THR 25.A OG1 GLN 21.A O no hydrogen 3.300 N/A ILE 26.A N ILE 22.A O no hydrogen 2.999 N/A SER 27.A N THR 23.A O no hydrogen 2.885 N/A SER 27.A OG THR 23.A O no hydrogen 3.081 N/A SER 27.A OG GLY 24.A O no hydrogen 3.042 N/A SER 28.A N GLY 24.A O no hydrogen 3.181 N/A SER 28.A OG GLY 24.A O no hydrogen 3.206 N/A LEU 29.A N THR 25.A O no hydrogen 2.964 N/A GLU 30.A N ILE 26.A O no hydrogen 2.959 N/A SER 31.A N SER 28.A O no hydrogen 3.012 N/A SER 31.A OG SER 27.A O no hydrogen 2.684 N/A SER 31.A OG SER 28.A O no hydrogen 3.008 N/A PHE 32.A N LEU 29.A O no hydrogen 3.220 N/A ASN 34.A ND2 GLU 108.A O no hydrogen 3.467 N/A ASN 34.A ND2 SER 110.A O no hydrogen 2.761 N/A ARG 35.A N SER 100.A OG no hydrogen 2.910 N/A ARG 35.A NE LEU 98.A O no hydrogen 2.660 N/A ARG 35.A NH1 LEU 29.A O no hydrogen 3.259 N/A ARG 35.A NH1 PRO 113.A O no hydrogen 2.781 N/A ARG 35.A NH2 GLY 114.A O no hydrogen 2.871 N/A PHE 36.A N ASN 34.A OD1 no hydrogen 3.096 N/A THR 39.A N PHE 36.A O no hydrogen 3.269 N/A THR 39.A OG1 ASN 34.A OD1 no hydrogen 2.758 N/A THR 39.A OG1 PHE 36.A O no hydrogen 3.251 N/A THR 39.A OG1 SER 41.A OG no hydrogen 3.160 N/A THR 40.A N GLU 108.A OE1 no hydrogen 3.072 N/A THR 40.A N GLU 108.A OE2 no hydrogen 3.332 N/A THR 40.A OG1 GLU 108.A OE2 no hydrogen 3.133 N/A SER 41.A OG ASN 34.A O no hydrogen 2.721 N/A SER 41.A OG ASN 34.A OD1 no hydrogen 3.062 N/A SER 41.A OG THR 39.A OG1 no hydrogen 3.160 N/A GLY 42.A N THR 39.A OG1 no hydrogen 3.049 N/A ALA 43.A N THR 39.A O no hydrogen 3.060 N/A GLN 44.A N THR 40.A O no hydrogen 2.923 N/A ALA 45.A N SER 41.A O no hydrogen 2.936 N/A SER 46.A OG LYS 76.A O no hydrogen 2.673 N/A ASP 47.A N ALA 43.A O no hydrogen 3.251 N/A TRP 48.A N GLN 44.A O no hydrogen 2.826 N/A ILE 49.A N ALA 45.A O no hydrogen 2.966 N/A ALA 50.A N SER 46.A O no hydrogen 3.009 N/A SER 51.A N ASP 47.A O no hydrogen 2.974 N/A GLU 52.A N TRP 48.A O no hydrogen 2.971 N/A TRP 53.A N ILE 49.A O no hydrogen 2.906 N/A TRP 53.A NE1 THR 126.A OG1 no hydrogen 2.885 N/A GLN 54.A N ALA 50.A O no hydrogen 2.802 N/A ALA 55.A N SER 51.A O no hydrogen 3.129 N/A LEU 56.A N GLU 52.A O no hydrogen 3.228 N/A SER 57.A N TRP 53.A O no hydrogen 2.817 N/A SER 57.A OG TRP 53.A O no hydrogen 3.431 N/A SER 57.A OG GLN 54.A O no hydrogen 3.032 N/A SER 64.A N THR 81.A O no hydrogen 3.041 N/A SER 64.A OG THR 81.A OG1 no hydrogen 3.358 N/A LYS 66.A N VAL 79.A O no hydrogen 2.877 N/A LYS 66.A NZ SER 64.A OG no hydrogen 3.114 N/A LYS 66.A NZ THR 81.A OG1 no hydrogen 2.934 N/A GLN 67.A NE2 SER 46.A OG no hydrogen 3.061 N/A GLN 67.A NE2 ASP 47.A OD2 no hydrogen 2.714 N/A VAL 68.A N SER 77.A O no hydrogen 2.903 N/A HIS 70.A ND1 ASP 160.A OD1 no hydrogen 2.952 N/A HIS 70.A NE2 SER 77.A OG no hydrogen 2.624 N/A GLN 75.A NE2 ARG 35.A O no hydrogen 2.840 N/A GLN 75.A NE2 GLY 42.A O no hydrogen 3.176 N/A SER 77.A N VAL 68.A O no hydrogen 3.192 N/A SER 77.A OG HIS 70.A NE2 no hydrogen 2.624 N/A VAL 78.A N ALA 147.A O no hydrogen 2.785 N/A VAL 79.A N LYS 66.A O no hydrogen 2.768 N/A MET 80.A N PHE 145.A O no hydrogen 2.842 N/A THR 81.A N SER 64.A O no hydrogen 3.034 N/A THR 81.A OG1 SER 64.A OG no hydrogen 3.358 N/A ILE 82.A N ILE 143.A O no hydrogen 2.925 N/A THR 83.A N ASN 62.A O no hydrogen 3.316 N/A GLY 84.A N SER 142.A OG no hydrogen 2.885 N/A SER 85.A N PRO 139.A O no hydrogen 2.954 N/A SER 85.A OG PRO 139.A O no hydrogen 3.435 N/A GLU 86.A N LYS 140.A O no hydrogen 3.064 N/A ALA 87.A N LYS 140.A O no hydrogen 2.695 N/A GLU 90.A N ALA 87.A O no hydrogen 3.137 N/A TRP 91.A N ASN 171.A O no hydrogen 2.780 N/A ILE 92.A N SER 142.A O no hydrogen 2.916 N/A VAL 93.A N SER 174.A O no hydrogen 2.825 N/A ILE 94.A N ALA 144.A O no hydrogen 3.042 N/A GLY 95.A N LEU 176.A O no hydrogen 2.987 N/A GLY 96.A N MET 146.A O no hydrogen 3.061 N/A HIS 97.A N ASP 118.A OD1 no hydrogen 3.163 N/A HIS 97.A ND1 ASP 99.A OD2 no hydrogen 2.976 N/A HIS 97.A NE2 ASP 179.A OD1 no hydrogen 3.119 N/A LEU 98.A N TYR 148.A O no hydrogen 2.896 N/A SER 100.A N ARG 35.A O no hydrogen 3.256 N/A SER 100.A OG ALA 112.A O no hydrogen 2.675 N/A THR 101.A OG1 THR 106.A OG1 no hydrogen 3.114 N/A ILE 102.A N THR 106.A OG1 no hydrogen 3.091 N/A GLY 103.A N THR 101.A OG1 no hydrogen 3.076 N/A THR 106.A N GLY 103.A O no hydrogen 3.206 N/A THR 106.A OG1 THR 101.A OG1 no hydrogen 3.114 N/A THR 106.A OG1 GLY 103.A O no hydrogen 2.691 N/A ASN 107.A N SER 110.A OG no hydrogen 2.703 N/A ASN 107.A ND2 HIS 105.A O no hydrogen 3.388 N/A GLN 109.A N ASN 107.A OD1 no hydrogen 2.781 N/A SER 110.A N ASN 107.A O no hydrogen 3.053 N/A SER 110.A OG ASN 107.A O no hydrogen 3.467 N/A ALA 112.A N THR 33.A O no hydrogen 2.774 N/A ALA 115.A N ASP 260.A O no hydrogen 2.864 N/A ASP 116.A N ASP 260.A OD2 no hydrogen 2.857 N/A ASP 117.A N ASP 260.A OD1 no hydrogen 3.128 N/A ALA 119.A N GLY 114.A O no hydrogen 2.992 N/A SER 120.A OG ASP 116.A O no hydrogen 2.597 N/A SER 120.A OG ASP 116.A OD1 no hydrogen 3.149 N/A GLY 121.A N ASP 118.A OD2 no hydrogen 3.033 N/A ILE 122.A N ASP 118.A O no hydrogen 3.186 N/A ALA 123.A N ALA 119.A O no hydrogen 2.852 N/A ALA 124.A N SER 120.A O no hydrogen 3.021 N/A VAL 125.A N GLY 121.A O no hydrogen 3.025 N/A THR 126.A N ILE 122.A O no hydrogen 2.875 N/A THR 126.A OG1 ILE 122.A O no hydrogen 2.743 N/A GLU 127.A N ALA 123.A O no hydrogen 2.936 N/A VAL 128.A N ALA 124.A O no hydrogen 3.113 N/A ILE 129.A N VAL 125.A O no hydrogen 3.050 N/A ARG 130.A N THR 126.A O no hydrogen 2.974 N/A ARG 130.A NE GLU 127.A OE1 no hydrogen 2.766 N/A ARG 130.A NE GLU 127.A OE2 no hydrogen 3.346 N/A ARG 130.A NH1 GLU 134.A OE2 no hydrogen 2.964 N/A ARG 130.A NH2 GLN 16.A O no hydrogen 3.139 N/A ARG 130.A NH2 GLU 127.A OE2 no hydrogen 2.575 N/A VAL 131.A N GLU 127.A O no hydrogen 3.017 N/A LEU 132.A N VAL 128.A O no hydrogen 3.016 N/A SER 133.A N ILE 129.A O no hydrogen 2.805 N/A SER 133.A OG ILE 129.A O no hydrogen 2.971 N/A SER 133.A OG ARG 130.A O no hydrogen 2.831 N/A GLU 134.A N ARG 130.A O no hydrogen 2.771 N/A ASN 135.A N VAL 131.A O no hydrogen 3.170 N/A ASN 135.A N LEU 132.A O no hydrogen 3.169 N/A ASN 135.A ND2 GLN 16.A OE1 no hydrogen 2.835 N/A ASN 135.A ND2 VAL 131.A O no hydrogen 2.840 N/A ASN 136.A N SER 133.A O no hydrogen 3.022 N/A PHE 137.A N LEU 132.A O no hydrogen 2.957 N/A GLN 138.A NE2 THR 83.A O no hydrogen 3.496 N/A GLN 138.A NE2 PRO 139.A O no hydrogen 3.138 N/A LYS 140.A N GLY 287.A O no hydrogen 2.946 N/A LYS 140.A NZ GLU 86.A OE2 no hydrogen 3.480 N/A ARG 141.A N GLY 287.A O no hydrogen 2.981 N/A ARG 141.A NE GLU 90.A OE2 no hydrogen 2.635 N/A ARG 141.A NH1 MET 286.A O no hydrogen 3.143 N/A ARG 141.A NH2 GLU 90.A OE2 no hydrogen 3.351 N/A SER 142.A N GLU 90.A O no hydrogen 2.959 N/A SER 142.A OG PRO 88.A O no hydrogen 2.873 N/A ILE 143.A N ILE 82.A O no hydrogen 2.872 N/A ALA 144.A N ILE 92.A O no hydrogen 2.813 N/A PHE 145.A N MET 80.A O no hydrogen 2.741 N/A MET 146.A N ILE 94.A O no hydrogen 2.888 N/A ALA 147.A N VAL 78.A O no hydrogen 2.831 N/A TYR 148.A N GLY 96.A O no hydrogen 2.885 N/A ALA 149.A N SER 77.A OG no hydrogen 3.002 N/A ALA 150.A N GLN 75.A OE1 no hydrogen 2.896 N/A GLU 151.A N ASP 99.A OD2 no hydrogen 3.173 N/A GLU 152.A N ASP 99.A OD1 no hydrogen 2.870 N/A GLY 154.A N GLU 151.A O no hydrogen 3.087 N/A LEU 155.A N GLU 151.A O no hydrogen 2.944 N/A ARG 156.A N ALA 150.A O no hydrogen 3.162 N/A ARG 156.A NE VAL 153.A O no hydrogen 3.183 N/A SER 158.A OG LEU 155.A O no hydrogen 3.298 N/A SER 158.A OG ASP 229.A OD2 no hydrogen 2.527 N/A SER 158.A OG SER 232.A OG no hydrogen 2.786 N/A GLN 159.A N LEU 155.A O no hydrogen 3.066 N/A ASP 160.A N ARG 156.A O no hydrogen 3.183 N/A LEU 161.A N GLY 157.A O no hydrogen 3.010 N/A ALA 162.A N SER 158.A O no hydrogen 2.725 N/A ASN 163.A N GLN 159.A O no hydrogen 2.966 N/A GLN 164.A N ASP 160.A O no hydrogen 2.788 N/A TYR 165.A N LEU 161.A O no hydrogen 2.907 N/A LYS 166.A N ALA 162.A O no hydrogen 3.006 N/A LYS 166.A NZ ALA 236.A O no hydrogen 2.848 N/A SER 167.A N ASN 163.A O no hydrogen 2.833 N/A SER 167.A OG ASN 163.A O no hydrogen 2.988 N/A GLU 168.A N GLN 164.A O no hydrogen 2.862 N/A GLY 169.A N LYS 166.A O no hydrogen 3.154 N/A LYS 170.A N TYR 165.A O no hydrogen 2.919 N/A VAL 173.A N TRP 91.A O no hydrogen 2.717 N/A SER 174.A OG TYR 282.A OH no hydrogen 2.880 N/A ALA 175.A N PRO 239.A O no hydrogen 2.877 N/A LEU 176.A N VAL 93.A O no hydrogen 2.824 N/A GLN 177.A N ALA 241.A O no hydrogen 2.961 N/A GLN 177.A NE2 SER 228.A OG no hydrogen 3.021 N/A GLN 177.A NE2 ASP 229.A OD1 no hydrogen 2.982 N/A LEU 178.A N GLY 95.A O no hydrogen 2.740 N/A MET 180.A N ASP 118.A OD2 no hydrogen 2.980 N/A THR 181.A N SER 120.A OG no hydrogen 3.056 N/A ASN 182.A N ASP 116.A OD1 no hydrogen 2.923 N/A ASN 182.A ND2 SER 265.A OG no hydrogen 3.311 N/A ASN 182.A ND2 ASP 266.A O no hydrogen 2.877 N/A LYS 184.A NZ SER 186.A O no hydrogen 2.741 N/A LYS 184.A NZ ALA 187.A O no hydrogen 3.070 N/A SER 186.A OG ASP 250.A OD2 no hydrogen 2.608 N/A GLN 188.A N GLN 188.A OE1 no hydrogen 2.592 N/A ASP 189.A N THR 217.A O no hydrogen 2.792 N/A VAL 190.A N THR 217.A O no hydrogen 3.199 N/A VAL 191.A N PHE 244.A O no hydrogen 2.924 N/A PHE 192.A N GLY 219.A O no hydrogen 2.917 N/A ILE 193.A N MET 242.A O no hydrogen 3.042 N/A THR 194.A N ASP 221.A O no hydrogen 2.754 N/A THR 194.A OG1 ASP 221.A O no hydrogen 3.340 N/A THR 197.A OG1 ILE 193.A O no hydrogen 2.831 N/A ASP 198.A N ALA 240.A O no hydrogen 2.826 N/A PHE 201.A N ASP 198.A OD1 no hydrogen 2.687 N/A THR 202.A N ASP 198.A O no hydrogen 2.808 N/A THR 202.A OG1 ASP 198.A O no hydrogen 2.966 N/A GLN 203.A N SER 199.A O no hydrogen 2.882 N/A TYR 204.A N ASN 200.A O no hydrogen 3.024 N/A LEU 205.A N PHE 201.A O no hydrogen 3.066 N/A THR 206.A N THR 202.A O no hydrogen 3.268 N/A THR 206.A OG1 GLN 203.A O no hydrogen 2.704 N/A GLN 207.A N GLN 203.A O no hydrogen 3.237 N/A GLN 207.A N TYR 204.A O no hydrogen 2.946 N/A GLN 207.A NE2 GLN 203.A O no hydrogen 3.525 N/A LEU 208.A N TYR 204.A O no hydrogen 3.079 N/A MET 209.A N LEU 205.A O no hydrogen 3.130 N/A ASP 210.A N THR 206.A O no hydrogen 2.989 N/A GLU 211.A N GLN 207.A O no hydrogen 3.049 N/A TYR 212.A N LEU 208.A O no hydrogen 2.721 N/A TYR 212.A OH GLU 285.A OE1 no hydrogen 2.532 N/A LEU 213.A N MET 209.A O no hydrogen 2.726 N/A LEU 216.A N LEU 213.A O no hydrogen 2.955 N/A THR 217.A N ASP 189.A OD2 no hydrogen 2.991 N/A TYR 218.A OH ASP 210.A OD1 no hydrogen 3.295 N/A TYR 218.A OH ASP 210.A OD2 no hydrogen 2.774 N/A GLY 219.A N VAL 190.A O no hydrogen 2.828 N/A ASP 221.A N PHE 192.A O no hydrogen 2.974 N/A THR 222.A N ASP 221.A OD2 no hydrogen 2.759 N/A CYS 223.A N ASP 195.A OD1 no hydrogen 2.942 N/A CYS 223.A N ASP 195.A OD2 no hydrogen 3.154 N/A GLY 224.A N ASP 195.A OD2 no hydrogen 2.658 N/A CYS 227.A SG TYR 225.A O no hydrogen 3.903 N/A SER 228.A OG ASP 179.A OD2 no hydrogen 2.541 N/A ALA 231.A N SER 228.A O no hydrogen 3.034 N/A SER 232.A N ASP 229.A O no hydrogen 2.922 N/A SER 232.A OG SER 158.A OG no hydrogen 2.786 N/A TRP 233.A NE1 TYR 148.A OH no hydrogen 2.849 N/A HIS 234.A N HIS 230.A O no hydrogen 2.950 N/A ASN 235.A N ALA 231.A O no hydrogen 2.847 N/A ALA 236.A N SER 232.A O no hydrogen 3.266 N/A ALA 236.A N TRP 233.A O no hydrogen 3.105 N/A GLY 237.A N HIS 234.A O no hydrogen 2.891 N/A TYR 238.A N TRP 233.A O no hydrogen 2.972 N/A TYR 238.A OH LYS 170.A O no hydrogen 2.909 N/A ALA 241.A N ALA 175.A O no hydrogen 3.056 N/A PHE 244.A N VAL 191.A O no hydrogen 2.498 N/A GLU 245.A N MET 180.A O no hydrogen 3.214 N/A SER 246.A OG LYS 247.A O no hydrogen 3.041 N/A LYS 247.A N SER 186.A OG no hydrogen 2.899 N/A LYS 247.A NZ PHE 220.A O no hydrogen 2.872 N/A PHE 248.A N ASP 221.A OD1 no hydrogen 2.805 N/A ASP 250.A N LYS 247.A O no hydrogen 2.867 N/A ASN 252.A N GLU 245.A OE1 no hydrogen 2.886 N/A ASN 252.A ND2 ASP 116.A OD2 no hydrogen 3.133 N/A ARG 254.A N ASN 252.A OD1 no hydrogen 3.003 N/A ILE 255.A N ASN 252.A O no hydrogen 3.448 N/A THR 257.A N ARG 254.A O no hydrogen 3.270 N/A THR 257.A OG1 ARG 254.A O no hydrogen 2.646 N/A THR 258.A OG1 GLN 259.A OE1 no hydrogen 3.467 N/A GLN 259.A N THR 257.A OG1 no hydrogen 3.024 N/A ASP 260.A N THR 257.A O no hydrogen 3.378 N/A THR 261.A N GLN 259.A O no hydrogen 2.816 N/A LEU 262.A N GLU 30.A OE1 no hydrogen 2.858 N/A ASN 264.A N THR 261.A O no hydrogen 3.075 N/A ASN 264.A N THR 261.A OG1 no hydrogen 3.379 N/A ASN 264.A ND2 GLN 259.A O no hydrogen 2.887 N/A SER 265.A N LEU 262.A O no hydrogen 2.993 N/A SER 265.A OG THR 261.A O no hydrogen 3.352 N/A SER 265.A OG LEU 262.A O no hydrogen 2.881 N/A THR 268.A N ASP 266.A OD1 no hydrogen 3.076 N/A THR 268.A OG1 ASP 266.A OD1 no hydrogen 2.698 N/A THR 268.A OG1 ASP 266.A OD2 no hydrogen 3.327 N/A THR 268.A OG1 SER 270.A OG no hydrogen 3.242 N/A GLY 269.A N ASP 266.A O no hydrogen 2.806 N/A SER 270.A N THR 268.A OG1 no hydrogen 3.139 N/A SER 270.A OG ASP 266.A OD2 no hydrogen 2.880 N/A SER 270.A OG THR 268.A OG1 no hydrogen 3.242 N/A HIS 271.A N ASP 266.A OD2 no hydrogen 2.950 N/A HIS 271.A NE2 GLU 245.A O no hydrogen 3.093 N/A ALA 272.A N ASN 182.A OD1 no hydrogen 3.130 N/A LYS 273.A N GLY 269.A O no hydrogen 2.967 N/A LYS 274.A N HIS 271.A O no hydrogen 2.951 N/A LYS 274.A NZ ASP 189.A OD1 no hydrogen 2.841 N/A LYS 274.A NZ HIS 271.A ND1 no hydrogen 3.053 N/A THR 276.A N ALA 272.A O no hydrogen 3.019 N/A THR 276.A OG1 ALA 272.A O no hydrogen 2.919 N/A GLN 277.A N LYS 273.A O no hydrogen 2.927 N/A LEU 278.A N LYS 274.A O no hydrogen 2.992 N/A GLY 279.A N PHE 275.A O no hydrogen 2.909 N/A LEU 280.A N THR 276.A O no hydrogen 2.894 N/A ALA 281.A N GLN 277.A O no hydrogen 3.013 N/A TYR 282.A N LEU 278.A O no hydrogen 2.934 N/A TYR 282.A OH VAL 93.A O no hydrogen 2.903 N/A TYR 282.A OH SER 174.A OG no hydrogen 2.880 N/A ALA 283.A N GLY 279.A O no hydrogen 2.895 N/A ILE 284.A N LEU 280.A O no hydrogen 2.923 N/A GLU 285.A N ALA 281.A O no hydrogen 2.891 N/A MET 286.A N TYR 282.A O no hydrogen 2.863 N/A GLY 287.A N ALA 283.A O no hydrogen 2.770 N/A SER 288.A N ILE 284.A O no hydrogen 3.042 N/A SER 288.A N GLU 285.A O no hydrogen 3.316 N/A SER 288.A OG ILE 284.A O no hydrogen 2.790 N/A THR 290.A OG1 GLU 86.A OE1 no hydrogen 3.517 N/A GLY 291.A N GLU 90.A OE1 no hydrogen 3.146 N/A GLY 291.A N GLU 90.A OE2 no hydrogen 3.238 N/A