Finding intermodel H-bonds
Finding intramodel H-bonds
Constraints relaxed by 0.4 angstroms and 20 degrees
Models used:
	#0 3u3o_A.cif

H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist):
ARG 2.A NH1     TYR 136.A O      no hydrogen  2.793  N/A
ARG 2.A NH1     HIS 142.A O      no hydrogen  3.073  N/A
ARG 2.A NH2     TYR 136.A O      no hydrogen  3.510  N/A
ARG 2.A NH2     HIS 137.A O      no hydrogen  2.872  N/A
GLU 6.A N       LEU 13.A O       no hydrogen  2.834  N/A
VAL 8.A N       VAL 11.A O       no hydrogen  2.764  N/A
VAL 11.A N      VAL 8.A O        no hydrogen  2.882  N/A
LEU 13.A N      GLU 6.A O        no hydrogen  2.906  N/A
LYS 15.A NZ.B   GLU 19.A OE2     no hydrogen  2.716  N/A
ALA 18.A N      ILE 14.A O       no hydrogen  2.973  N/A
GLU 19.A N      LYS 15.A O       no hydrogen  3.048  N/A
ALA 20.A N      TYR 16.A O       no hydrogen  3.015  N/A
LEU 21.A N      PHE 17.A O       no hydrogen  3.219  N/A
LEU 21.A N      ALA 18.A O       no hydrogen  3.247  N/A
GLY 22.A N      GLU 19.A O       no hydrogen  3.094  N/A
LEU 24.A N      ALA 20.A O       no hydrogen  3.104  N/A
GLN 25.A N      LEU 21.A O       no hydrogen  3.153  N/A
GLN 25.A N      GLY 22.A O       no hydrogen  3.096  N/A
SER 26.A N.A    PRO 23.A O       no hydrogen  3.042  N/A
SER 26.A N.B    PRO 23.A O       no hydrogen  3.055  N/A
SER 26.A OG.A   PRO 23.A O       no hydrogen  2.986  N/A
PHE 27.A N      LEU 24.A O       no hydrogen  3.035  N/A
GLN 28.A NE2.B  PHE 27.A O       no hydrogen  3.040  N/A
ALA 29.A N      THR 110.A OG1    no hydrogen  3.010  N/A
ARG 30.A N      ASP 33.A OD2     no hydrogen  2.703  N/A
ARG 30.A NE     ASP 32.A OD1     no hydrogen  2.920  N/A
ARG 30.A NH2    ASP 32.A OD1     no hydrogen  3.248  N/A
ARG 30.A NH2    ASP 32.A OD2     no hydrogen  3.148  N/A
ASP 33.A N      ARG 30.A O       no hydrogen  3.113  N/A
LEU 34.A N      ARG 96.A O       no hydrogen  3.124  N/A
LEU 35.A N      LYS 117.A O      no hydrogen  2.818  N/A
ILE 36.A N      LEU 98.A O       no hydrogen  2.793  N/A
SER 37.A N      VAL 119.A O      no hydrogen  3.108  N/A
THR 38.A N      THR 100.A O      no hydrogen  3.349  N/A
THR 38.A OG1    TYR 39.A O       no hydrogen  3.500  N/A
THR 38.A OG1    THR 44.A OG1     no hydrogen  2.648  N/A
THR 38.A OG1    HIS 101.A ND1    no hydrogen  2.927  N/A
TYR 39.A OH     GLY 163.A O      no hydrogen  2.584  N/A
SER 42.A OG     TYR 39.A O       no hydrogen  2.765  N/A
SER 42.A OG     PRO 40.A O       no hydrogen  3.393  N/A
THR 44.A OG1    THR 38.A OG1     no hydrogen  2.648  N/A
VAL 47.A N      GLY 43.A O       no hydrogen  3.007  N/A
SER 48.A N      THR 44.A O       no hydrogen  2.892  N/A
SER 48.A OG     THR 44.A O       no hydrogen  2.721  N/A
GLN 49.A N      THR 45.A O       no hydrogen  3.032  N/A
ILE 50.A N      TRP 46.A O       no hydrogen  3.185  N/A
LEU 51.A N      VAL 47.A O       no hydrogen  2.928  N/A
ASP 52.A N      SER 48.A O       no hydrogen  2.815  N/A
MET 53.A N      GLN 49.A O       no hydrogen  3.000  N/A
ILE 54.A N      ILE 50.A O       no hydrogen  2.999  N/A
TYR 55.A N      LEU 51.A O       no hydrogen  2.844  N/A
GLN 56.A N      ASP 52.A O       no hydrogen  2.882  N/A
GLN 56.A N      MET 53.A O       no hydrogen  3.107  N/A
GLN 56.A NE2    ASP 52.A OD2     no hydrogen  2.989  N/A
GLY 57.A N      ILE 54.A O       no hydrogen  2.887  N/A
GLY 58.A N      MET 53.A O       no hydrogen  2.694  N/A
ASP 59.A N      GLN 56.A O       no hydrogen  3.193  N/A
LYS 62.A N      ASP 59.A OD1     no hydrogen  2.991  N/A
CYS 63.A N      ASP 59.A O       no hydrogen  3.223  N/A
CYS 63.A SG     ASP 52.A OD1     no hydrogen  3.729  N/A
CYS 63.A SG     ASP 59.A O       no hydrogen  3.517  N/A
HIS 64.A N      LEU 60.A O       no hydrogen  3.229  N/A
HIS 64.A N      GLU 61.A O       no hydrogen  3.180  N/A
ARG 65.A N      LYS 62.A O       no hydrogen  3.061  N/A
ARG 65.A NH1    ASP 52.A OD1     no hydrogen  2.883  N/A
ARG 65.A NH1    ASP 52.A OD2     no hydrogen  3.500  N/A
ARG 65.A NH1    LYS 62.A O       no hydrogen  3.060  N/A
ARG 65.A NH2    ASP 52.A OD2     no hydrogen  3.007  N/A
ILE 68.A N      MET 230.A O      no hydrogen  2.780  N/A
MET 70.A N      PRO 67.A O       no hydrogen  2.791  N/A
ARG 71.A N      PRO 67.A O       no hydrogen  2.941  N/A
ARG 71.A NE     ALA 66.A O       no hydrogen  2.782  N/A
ARG 71.A NH1    GLN 49.A OE1     no hydrogen  2.964  N/A
ARG 71.A NH1    ASP 52.A OD1     no hydrogen  2.671  N/A
ARG 71.A NH2    GLN 49.A OE1     no hydrogen  2.994  N/A
ARG 71.A NH2    MET 230.A O      no hydrogen  3.214  N/A
VAL 72.A N      ILE 68.A O       no hydrogen  2.840  N/A
LEU 75.A N      LYS 99.A O       no hydrogen  2.875  N/A
GLU 76.A N      GLU 76.A OE1     no hydrogen  2.722  N/A
PHE 77.A N      PHE 74.A O       no hydrogen  3.024  N/A
LYS 78.A NZ     GLU 19.A OE1     no hydrogen  2.795  N/A
ILE 82.A N      ALA 79.A O       no hydrogen  3.048  N/A
SER 84.A N      GLU 87.A OE2     no hydrogen  2.784  N/A
GLY 85.A N      PHE 77.A O       no hydrogen  2.886  N/A
GLU 87.A N      SER 84.A OG      no hydrogen  3.056  N/A
THR 88.A N      SER 84.A O       no hydrogen  2.887  N/A
THR 88.A OG1    SER 84.A O       no hydrogen  3.278  N/A
LEU 89.A N      GLY 85.A O       no hydrogen  2.825  N/A
ASP 91.A N      THR 88.A O       no hydrogen  3.200  N/A
THR 92.A N      LEU 89.A O       no hydrogen  2.968  N/A
THR 92.A OG1    THR 88.A O       no hydrogen  3.045  N/A
THR 92.A OG1    LEU 89.A O       no hydrogen  3.533  N/A
ARG 96.A NE     ASP 33.A OD1     no hydrogen  2.856  N/A
ARG 96.A NH2    GLN 28.A O       no hydrogen  3.323  N/A
ARG 96.A NH2    ASP 33.A OD1     no hydrogen  3.514  N/A
ARG 96.A NH2    ASP 33.A OD2     no hydrogen  2.946  N/A
LEU 98.A N      LEU 34.A O       no hydrogen  2.993  N/A
LYS 99.A N      PRO 73.A O       no hydrogen  2.769  N/A
THR 100.A N     ILE 36.A O       no hydrogen  2.973  N/A
THR 100.A OG1   GLU 76.A OE1     no hydrogen  2.746  N/A
THR 100.A OG1   GLU 76.A OE2     no hydrogen  3.345  N/A
HIS 101.A N     GLU 76.A OE2     no hydrogen  2.952  N/A
HIS 101.A ND1   THR 38.A O       no hydrogen  2.746  N/A
LEU 102.A N     THR 100.A OG1    no hydrogen  3.026  N/A
LEU 104.A N     GLU 171.A OE1    no hydrogen  2.895  N/A
LEU 106.A N     PRO 103.A O      no hydrogen  2.828  N/A
LEU 107.A N     LEU 104.A O      no hydrogen  3.286  N/A
GLN 109.A NE2   ASP 113.A OD1    no hydrogen  2.865  N/A
LEU 111.A N     PRO 108.A O      no hydrogen  3.007  N/A
ASP 113.A N     GLN 109.A O      no hydrogen  3.038  N/A
GLN 114.A N     THR 110.A O      no hydrogen  2.970  N/A
GLN 114.A NE2   ALA 29.A O       no hydrogen  3.128  N/A
LYS 115.A N     LEU 112.A O      no hydrogen  2.984  N/A
VAL 116.A N     LEU 111.A O      no hydrogen  3.263  N/A
LYS 117.A NZ.B  PHE 203.A O      no hydrogen  2.928  N/A
VAL 118.A N     PRO 180.A O      no hydrogen  3.060  N/A
VAL 119.A N     LEU 35.A O       no hydrogen  2.859  N/A
TYR 120.A N     LEU 182.A O      no hydrogen  2.851  N/A
TYR 120.A OH    HIS 168.A ND1    no hydrogen  2.793  N/A
VAL 121.A N     SER 37.A O       no hydrogen  3.255  N/A
ALA 122.A N     LEU 184.A O      no hydrogen  2.934  N/A
ARG 123.A NH1   LYS 41.A O       no hydrogen  2.841  N/A
ARG 123.A NH2   MET 253.A O      no hydrogen  3.116  N/A
ASN 124.A N     GLU 187.A OE2    no hydrogen  2.824  N/A
ASN 124.A ND2   ASP 127.A OD2    no hydrogen  3.026  N/A
ASN 124.A ND2   GLU 187.A OE2    no hydrogen  2.733  N/A
ASN 124.A ND2   ARG 285.A O      no hydrogen  3.283  N/A
LYS 126.A N     ASN 124.A OD1    no hydrogen  3.201  N/A
LYS 126.A NZ    ASN 266.A OD1    no hydrogen  2.734  N/A
LYS 126.A NZ    ASP 270.A OD1    no hydrogen  2.728  N/A
ASP 127.A N     ASN 124.A OD1    no hydrogen  3.123  N/A
VAL 128.A N     ASN 124.A O      no hydrogen  3.113  N/A
ALA 129.A N     ALA 125.A O      no hydrogen  2.841  N/A
VAL 130.A N     LYS 126.A O      no hydrogen  3.135  N/A
SER 131.A N     ASP 127.A O      no hydrogen  2.903  N/A
TYR 132.A N     VAL 128.A O      no hydrogen  2.738  N/A
TYR 132.A OH    SER 161.A O      no hydrogen  2.482  N/A
TYR 133.A N     ALA 129.A O      no hydrogen  2.945  N/A
TYR 133.A OH    GLY 146.A O      no hydrogen  2.982  N/A
HIS 134.A N     VAL 130.A O      no hydrogen  3.187  N/A
HIS 134.A ND1   VAL 130.A O      no hydrogen  3.080  N/A
PHE 135.A N     SER 131.A O      no hydrogen  2.981  N/A
TYR 136.A N     TYR 132.A O      no hydrogen  2.900  N/A
HIS 137.A N     TYR 133.A O      no hydrogen  3.319  N/A
HIS 137.A NE2   TYR 133.A OH     no hydrogen  3.248  N/A
MET 138.A N     HIS 134.A O      no hydrogen  3.167  N/A
ALA 139.A N     PHE 135.A O      no hydrogen  2.802  N/A
LYS 140.A N     PHE 240.A O      no hydrogen  2.859  N/A
LYS 140.A NZ    GLN 238.A O      no hydrogen  2.894  N/A
HIS 142.A N     ALA 139.A O      no hydrogen  3.278  N/A
HIS 142.A ND1   ALA 139.A O      no hydrogen  2.870  N/A
THR 147.A OG1   SER 150.A OG.A   no hydrogen  3.209  N/A
TRP 148.A NE1   GLN 265.A OE1    no hydrogen  2.832  N/A
SER 150.A N     THR 147.A OG1    no hydrogen  3.078  N/A
SER 150.A OG.A  THR 147.A O      no hydrogen  3.057  N/A
SER 150.A OG.A  THR 147.A OG1    no hydrogen  3.209  N/A
PHE 151.A N     THR 147.A O      no hydrogen  2.825  N/A
LEU 152.A N     TRP 148.A O      no hydrogen  2.900  N/A
GLU 153.A N     ASP 149.A O      no hydrogen  3.187  N/A
LYS 154.A N     SER 150.A O      no hydrogen  3.137  N/A
PHE 155.A N     PHE 151.A O      no hydrogen  2.820  N/A
MET 156.A N     LEU 152.A O      no hydrogen  3.027  N/A
VAL 157.A N     GLU 153.A O      no hydrogen  3.356  N/A
GLY 158.A N     PHE 155.A O      no hydrogen  3.011  N/A
GLU 159.A N.A   LYS 154.A O      no hydrogen  2.836  N/A
GLU 159.A N.B   LYS 154.A O      no hydrogen  2.806  N/A
SER 161.A N     TYR 136.A OH     no hydrogen  3.010  N/A
TYR 162.A N     PRO 12.A O       no hydrogen  2.750  N/A
TYR 162.A OH    GLU 76.A OE2     no hydrogen  2.623  N/A
GLY 163.A N     VAL 160.A O      no hydrogen  2.808  N/A
TRP 165.A NE1   ARG 123.A O      no hydrogen  3.088  N/A
GLN 167.A N     SER 164.A OG     no hydrogen  3.091  N/A
HIS 168.A N     SER 164.A O      no hydrogen  3.143  N/A
HIS 168.A ND1   TYR 120.A OH     no hydrogen  2.793  N/A
HIS 168.A NE2   HIS 101.A O      no hydrogen  2.800  N/A
VAL 169.A N     TRP 165.A O      no hydrogen  2.996  N/A
GLN 170.A N     TYR 166.A O      no hydrogen  3.358  N/A
GLN 170.A NE2   TYR 166.A O      no hydrogen  3.147  N/A
GLN 170.A NE2   LYS 276.A O      no hydrogen  3.323  N/A
GLU 171.A N     GLN 167.A O      no hydrogen  2.885  N/A
TRP 172.A N     HIS 168.A O      no hydrogen  3.183  N/A
TRP 173.A N     VAL 169.A O      no hydrogen  3.141  N/A
TRP 173.A NE1   SER 281.A OG     no hydrogen  2.976  N/A
GLU 174.A N     GLN 170.A O      no hydrogen  2.952  N/A
LEU 175.A N     GLU 171.A O      no hydrogen  2.865  N/A
SER 176.A N     TRP 172.A O      no hydrogen  3.151  N/A
SER 176.A N     TRP 173.A O      no hydrogen  3.176  N/A
SER 176.A OG    TRP 173.A O      no hydrogen  2.684  N/A
ARG 177.A N     GLU 174.A O      no hydrogen  3.131  N/A
THR 178.A N     LEU 175.A O      no hydrogen  2.982  N/A
HIS 179.A NE2   VAL 116.A O      no hydrogen  2.754  N/A
LEU 182.A N     VAL 118.A O      no hydrogen  2.847  N/A
TYR 183.A OH    VAL 169.A O      no hydrogen  2.803  N/A
LEU 184.A N     TYR 120.A O      no hydrogen  2.752  N/A
TYR 186.A N     ALA 122.A O      no hydrogen  2.745  N/A
GLU 187.A N     GLU 187.A OE1    no hydrogen  2.867  N/A
ASP 188.A N     PHE 185.A O      no hydrogen  3.018  N/A
MET 189.A N     PHE 185.A O      no hydrogen  3.293  N/A
LYS 190.A N     TYR 186.A O      no hydrogen  2.871  N/A
LYS 190.A NZ    GLY 252.A O      no hydrogen  2.658  N/A
GLU 191.A N     GLU 187.A O      no hydrogen  2.901  N/A
ASN 192.A N     ASP 188.A O      no hydrogen  2.980  N/A
LYS 194.A NZ    GLU 210.A OE1    no hydrogen  2.786  N/A
LYS 194.A NZ    ASP 214.A OD1    no hydrogen  3.306  N/A
ARG 195.A N     ASN 192.A OD1    no hydrogen  2.993  N/A
ARG 195.A NE    GLU 196.A OE2    no hydrogen  2.933  N/A
ARG 195.A NH1   GLU 191.A OE1    no hydrogen  3.303  N/A
ARG 195.A NH2   ASP 188.A O      no hydrogen  3.148  N/A
ARG 195.A NH2   GLU 191.A OE1    no hydrogen  2.725  N/A
GLU 196.A N     ASN 192.A O      no hydrogen  3.339  N/A
ILE 197.A N     PRO 193.A O      no hydrogen  2.879  N/A
GLN 198.A N     LYS 194.A O      no hydrogen  2.932  N/A
LYS 199.A N     ARG 195.A O      no hydrogen  3.195  N/A
LYS 199.A NZ    GLU 196.A OE1    no hydrogen  2.951  N/A
LYS 199.A NZ    GLU 196.A OE2    no hydrogen  3.548  N/A
ILE 200.A N     GLU 196.A O      no hydrogen  3.044  N/A
LEU 201.A N     ILE 197.A O      no hydrogen  2.902  N/A
GLU 202.A N     GLN 198.A O      no hydrogen  3.106  N/A
PHE 203.A N     LYS 199.A O      no hydrogen  2.985  N/A
VAL 204.A N     ILE 200.A O      no hydrogen  2.945  N/A
GLY 205.A N     GLU 202.A O      no hydrogen  3.068  N/A
HIS 206.A N     LEU 201.A O      no hydrogen  3.044  N/A
VAL 213.A N     PRO 209.A O      no hydrogen  3.089  N/A
ASP 214.A N     GLU 210.A O      no hydrogen  2.929  N/A
PHE 215.A N     GLU 211.A O      no hydrogen  2.975  N/A
MET 216.A N     THR 212.A O      no hydrogen  2.866  N/A
VAL 217.A N     VAL 213.A O      no hydrogen  2.949  N/A
GLN 218.A N     ASP 214.A O      no hydrogen  3.141  N/A
HIS 219.A N     PHE 215.A O      no hydrogen  2.989  N/A
THR 220.A N     MET 216.A O      no hydrogen  2.881  N/A
THR 220.A N     VAL 217.A O      no hydrogen  3.390  N/A
THR 220.A OG1   MET 216.A O      no hydrogen  2.682  N/A
THR 220.A OG1   VAL 217.A O      no hydrogen  3.507  N/A
SER 221.A N     GLN 218.A O      no hydrogen  3.352  N/A
SER 221.A OG    GLN 218.A O      no hydrogen  3.060  N/A
LYS 223.A NZ.A  GLN 218.A OE1    no hydrogen  3.196  N/A
LYS 223.A NZ.A  SER 221.A OG     no hydrogen  2.886  N/A
GLU 224.A N     SER 221.A OG     no hydrogen  3.316  N/A
MET 225.A N     SER 221.A O      no hydrogen  2.828  N/A
LYS 226.A N     PHE 222.A O      no hydrogen  2.788  N/A
LYS 226.A NZ    MET 249.A O      no hydrogen  2.898  N/A
LYS 227.A N     LYS 223.A O      no hydrogen  3.414  N/A
ASN 228.A N     GLU 224.A O      no hydrogen  3.057  N/A
MET 230.A N     ASN 228.A OD1    no hydrogen  2.859  N/A
THR 231.A N     ASN 228.A O      no hydrogen  2.924  N/A
THR 231.A OG1   MET 225.A O      no hydrogen  2.932  N/A
THR 231.A OG1   ASN 228.A O      no hydrogen  3.394  N/A
ASN 232.A N     ASN 228.A O      no hydrogen  2.944  N/A
ASN 232.A ND2   LYS 226.A O      no hydrogen  2.789  N/A
THR 234.A N     ASN 232.A OD1    no hydrogen  2.944  N/A
THR 234.A OG1   ASN 232.A OD1    no hydrogen  2.681  N/A
VAL 236.A N     TYR 233.A O      no hydrogen  3.467  N/A
PHE 240.A N     PRO 237.A O      no hydrogen  2.813  N/A
MET 241.A N     PRO 237.A O      no hydrogen  3.181  N/A
ASP 242.A N     MET 138.A O      no hydrogen  2.867  N/A
HIS 243.A NE2   TYR 233.A O      no hydrogen  2.885  N/A
SER 244.A OG    ASP 242.A OD1    no hydrogen  2.496  N/A
SER 244.A OG    ASP 242.A OD2    no hydrogen  3.467  N/A
ILE 245.A N     ASP 242.A O      no hydrogen  2.990  N/A
ILE 245.A N     ASP 242.A OD1    no hydrogen  3.252  N/A
PHE 248.A N     HIS 243.A ND1    no hydrogen  3.318  N/A
ARG 250.A NH1   ASP 256.A OD1.B  no hydrogen  3.420  N/A
ARG 250.A NH2   ASP 256.A OD1.B  no hydrogen  2.935  N/A
LYS 251.A NZ    ASP 256.A OD2.A  no hydrogen  2.554  N/A
LYS 251.A NZ    ASP 256.A OD2.B  no hydrogen  2.985  N/A
GLY 255.A N     ASP 127.A OD2    no hydrogen  2.765  N/A
TRP 257.A N     ASP 127.A OD1    no hydrogen  3.071  N/A
TRP 257.A NE1   SER 286.A O      no hydrogen  2.747  N/A
LYS 258.A N     GLY 255.A O      no hydrogen  3.434  N/A
LYS 258.A NZ    GLU 287.A OE1    no hydrogen  2.360  N/A
THR 259.A N     ASP 256.A O      no hydrogen  3.080  N/A
THR 259.A OG1   ASP 256.A O      no hydrogen  3.013  N/A
THR 259.A OG1   ASP 256.A OD1.A  no hydrogen  3.152  N/A
THR 260.A N     TRP 257.A O      no hydrogen  2.913  N/A
PHE 261.A N     TRP 257.A O      no hydrogen  3.036  N/A
THR 262.A N     GLN 265.A OE1    no hydrogen  2.858  N/A
GLN 265.A N     THR 262.A OG1    no hydrogen  3.147  N/A
GLN 265.A NE2   ASP 149.A OD1    no hydrogen  2.800  N/A
ASN 266.A N     THR 262.A O      no hydrogen  2.886  N/A
GLU 267.A N     VAL 263.A O      no hydrogen  2.920  N/A
ARG 268.A N     ALA 264.A O      no hydrogen  3.037  N/A
ARG 268.A NE    GLU 153.A OE2    no hydrogen  2.664  N/A
ARG 268.A NH2   GLU 153.A OE1    no hydrogen  2.844  N/A
PHE 269.A N     GLN 265.A O      no hydrogen  2.780  N/A
ASP 270.A N     ASN 266.A O      no hydrogen  2.849  N/A
ALA 271.A N     GLU 267.A O      no hydrogen  3.228  N/A
ASP 272.A N     ARG 268.A O      no hydrogen  3.015  N/A
TYR 273.A N     PHE 269.A O      no hydrogen  2.835  N/A
ALA 274.A N     ASP 270.A O      no hydrogen  3.097  N/A
GLU 275.A N     ALA 271.A O      no hydrogen  3.376  N/A
LYS 276.A N     ASP 272.A O      no hydrogen  3.045  N/A
LYS 276.A NZ    MET 156.A O      no hydrogen  2.682  N/A
LYS 276.A NZ    ASP 272.A OD1    no hydrogen  3.039  N/A
LYS 276.A NZ    ASP 272.A OD2    no hydrogen  2.591  N/A
MET 277.A N     TYR 273.A O      no hydrogen  2.876  N/A
CYS 280.A N     MET 277.A O      no hydrogen  3.111  N/A
ARG 285.A NH1   ASP 188.A OD1    no hydrogen  2.753  N/A
ARG 285.A NH1   GLU 191.A OE1    no hydrogen  3.168  N/A
ARG 285.A NH2   GLU 191.A OE2    no hydrogen  2.740  N/A