Finding intermodel H-bonds
Finding intramodel H-bonds
Constraints relaxed by 0.4 angstroms and 20 degrees
Models used:
	#0 1wy5_A.cif

H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist):
SER 5.A N      ASN 2.A OD1    no hydrogen  2.983  N/A
SER 5.A OG     ASN 2.A O      no hydrogen  3.426  N/A
SER 5.A OG     ASN 2.A OD1    no hydrogen  3.465  N/A
ARG 6.A N      ASN 2.A O      no hydrogen  3.121  N/A
VAL 7.A N      GLU 4.A O      no hydrogen  3.153  N/A
ILE 8.A N      GLU 4.A O      no hydrogen  3.195  N/A
ARG 9.A N      SER 5.A O      no hydrogen  2.905  N/A
LYS 10.A NZ    GLU 176.A OE1  no hydrogen  2.670  N/A
LYS 10.A NZ    GLU 176.A OE2  no hydrogen  2.869  N/A
VAL 11.A N     VAL 7.A O      no hydrogen  2.882  N/A
LEU 12.A N     ILE 8.A O      no hydrogen  2.846  N/A
ALA 13.A N     ARG 9.A O      no hydrogen  3.030  N/A
LEU 14.A N     LYS 10.A O     no hydrogen  3.068  N/A
GLN 15.A N     VAL 11.A O     no hydrogen  3.032  N/A
GLN 15.A NE2   PHE 21.A O     no hydrogen  2.728  N/A
ASN 16.A N     LEU 12.A O     no hydrogen  2.989  N/A
ASP 17.A N     ALA 13.A O     no hydrogen  2.911  N/A
GLU 18.A N     LEU 14.A O     no hydrogen  2.662  N/A
LYS 19.A N     GLN 15.A O     no hydrogen  2.783  N/A
PHE 21.A N     GLN 15.A OE1   no hydrogen  2.987  N/A
SER 22.A N     GLU 24.A OE1   no hydrogen  2.703  N/A
GLU 24.A N     GLU 24.A OE1   no hydrogen  2.614  N/A
ARG 25.A N     ASP 127.A OD2  no hydrogen  2.794  N/A
ARG 25.A NH1   SER 52.A O     no hydrogen  3.411  N/A
ARG 26.A N     ASP 127.A OD2  no hydrogen  2.681  N/A
ARG 26.A NE    GLY 125.A O    no hydrogen  2.875  N/A
ARG 26.A NH2   GLU 124.A O    no hydrogen  3.129  N/A
VAL 27.A N     GLU 55.A O     no hydrogen  2.747  N/A
LEU 28.A N     CYS 128.A O    no hydrogen  3.049  N/A
ILE 29.A N     ALA 57.A O     no hydrogen  2.779  N/A
ALA 30.A N     ALA 130.A O    no hydrogen  2.882  N/A
PHE 31.A N     ALA 59.A O     no hydrogen  2.983  N/A
SER 32.A N     SER 37.A OG    no hydrogen  2.885  N/A
SER 32.A OG    ASP 191.A OD2  no hydrogen  3.160  N/A
GLY 34.A N     SER 32.A OG    no hydrogen  3.325  N/A
SER 37.A OG    ALA 30.A O     no hydrogen  3.274  N/A
VAL 38.A N     GLY 34.A O     no hydrogen  2.943  N/A
VAL 39.A N     VAL 35.A O     no hydrogen  2.846  N/A
LEU 40.A N     ASP 36.A O     no hydrogen  2.883  N/A
THR 41.A N     SER 37.A O     no hydrogen  3.050  N/A
THR 41.A OG1   SER 37.A O     no hydrogen  2.806  N/A
ASP 42.A N     VAL 38.A O     no hydrogen  2.906  N/A
VAL 43.A N     VAL 39.A O     no hydrogen  2.891  N/A
LEU 44.A N     LEU 40.A O     no hydrogen  2.881  N/A
LEU 45.A N     THR 41.A O     no hydrogen  2.937  N/A
LYS 46.A N     ASP 42.A O     no hydrogen  3.242  N/A
LEU 47.A N     VAL 43.A O     no hydrogen  2.899  N/A
LYS 48.A NZ    LYS 54.A O     no hydrogen  3.254  N/A
PHE 51.A N     LEU 47.A O     no hydrogen  2.970  N/A
SER 52.A N     ASN 49.A O     no hydrogen  2.721  N/A
LEU 53.A N     LYS 48.A O     no hydrogen  3.001  N/A
LYS 54.A N     ARG 25.A O     no hydrogen  2.724  N/A
GLU 55.A N     ARG 25.A O     no hydrogen  2.873  N/A
ALA 57.A N     VAL 27.A O     no hydrogen  2.867  N/A
LEU 58.A N     LYS 86.A O     no hydrogen  2.980  N/A
ALA 59.A N     ILE 29.A O     no hydrogen  2.990  N/A
HIS 60.A N     PHE 88.A O     no hydrogen  2.879  N/A
HIS 60.A ND1   PHE 31.A O     no hydrogen  2.910  N/A
ASN 62.A N     GLY 90.A O     no hydrogen  2.829  N/A
HIS 63.A N     GLU 192.A OE2  no hydrogen  2.876  N/A
HIS 63.A ND1   GLU 196.A OE2  no hydrogen  2.582  N/A
LEU 65.A N     GLU 192.A OE1  no hydrogen  3.035  N/A
ALA 69.A N     ARG 66.A O     no hydrogen  2.820  N/A
GLU 70.A N     GLU 67.A O     no hydrogen  3.116  N/A
ARG 71.A NH1   ASP 72.A OD1   no hydrogen  2.497  N/A
ARG 71.A NH1   GLU 190.A O    no hydrogen  3.432  N/A
ASP 72.A N     SER 68.A O     no hydrogen  2.672  N/A
GLU 73.A N     ALA 69.A O     no hydrogen  2.841  N/A
GLU 74.A N     GLU 70.A O     no hydrogen  3.027  N/A
PHE 75.A N     ARG 71.A O     no hydrogen  2.992  N/A
CYS 76.A N     ASP 72.A O     no hydrogen  2.967  N/A
CYS 76.A SG    PHE 31.A O     no hydrogen  3.976  N/A
CYS 76.A SG    SER 32.A O     no hydrogen  3.877  N/A
CYS 76.A SG    ASP 72.A O     no hydrogen  3.325  N/A
LYS 77.A N     GLU 73.A O     no hydrogen  2.954  N/A
LYS 77.A NZ    GLU 73.A OE2   no hydrogen  3.225  N/A
GLU 78.A N     GLU 74.A O     no hydrogen  3.046  N/A
PHE 79.A N     PHE 75.A O     no hydrogen  2.879  N/A
ALA 80.A N     CYS 76.A O     no hydrogen  2.965  N/A
LYS 81.A N     LYS 77.A O     no hydrogen  3.090  N/A
GLU 82.A N     GLU 78.A O     no hydrogen  2.889  N/A
ARG 83.A N     PHE 79.A O     no hydrogen  3.119  N/A
ARG 83.A N     ALA 80.A O     no hydrogen  3.230  N/A
ARG 83.A NH1   ASP 42.A OD2   no hydrogen  3.531  N/A
ARG 83.A NH2   ASP 42.A OD2   no hydrogen  2.742  N/A
ASN 84.A N     LYS 81.A O     no hydrogen  3.126  N/A
MET 85.A N     ALA 80.A O     no hydrogen  2.825  N/A
PHE 88.A N     LEU 58.A O     no hydrogen  2.837  N/A
GLY 90.A N     HIS 60.A O     no hydrogen  2.933  N/A
GLU 92.A N     ASN 62.A O     no hydrogen  3.293  N/A
VAL 94.A N     HIS 63.A O     no hydrogen  3.292  N/A
ARG 95.A NH2   LEU 65.A O     no hydrogen  3.457  N/A
ALA 96.A N     ASP 93.A OD1   no hydrogen  2.785  N/A
PHE 97.A N     ASP 93.A O     no hydrogen  3.166  N/A
ALA 98.A N     VAL 94.A O     no hydrogen  2.857  N/A
LYS 99.A N     ARG 95.A O     no hydrogen  3.120  N/A
GLU 100.A N    ALA 96.A O     no hydrogen  3.156  N/A
ASN 101.A ND2  PHE 97.A O     no hydrogen  2.881  N/A
ARG 102.A N    LYS 99.A O     no hydrogen  3.351  N/A
MET 103.A N    ALA 98.A O     no hydrogen  2.929  N/A
SER 104.A N    GLU 107.A OE2  no hydrogen  2.819  N/A
SER 104.A OG   GLU 107.A OE2  no hydrogen  2.990  N/A
GLU 107.A N    SER 104.A OG   no hydrogen  3.323  N/A
ALA 108.A N    SER 104.A O    no hydrogen  3.050  N/A
GLY 109.A N    LEU 105.A O    no hydrogen  2.800  N/A
ARG 110.A N    GLU 106.A O    no hydrogen  2.936  N/A
PHE 111.A N    GLU 107.A O    no hydrogen  3.009  N/A
LEU 112.A N    ALA 108.A O    no hydrogen  2.984  N/A
ARG 113.A N    GLY 109.A O    no hydrogen  2.923  N/A
TYR 114.A N    ARG 110.A O    no hydrogen  3.101  N/A
TYR 114.A OH   THR 131.A OG1  no hydrogen  3.242  N/A
LYS 115.A N    PHE 111.A O    no hydrogen  3.071  N/A
LYS 115.A NZ   GLU 119.A OE2  no hydrogen  3.210  N/A
PHE 116.A N    LEU 112.A O    no hydrogen  3.031  N/A
LEU 117.A N    ARG 113.A O    no hydrogen  2.875  N/A
LYS 118.A N    TYR 114.A O    no hydrogen  2.745  N/A
GLU 119.A N    LYS 115.A O    no hydrogen  2.908  N/A
ILE 120.A N    PHE 116.A O    no hydrogen  3.039  N/A
LEU 121.A N    LEU 117.A O    no hydrogen  3.037  N/A
GLU 122.A N    LYS 118.A O    no hydrogen  3.171  N/A
GLU 122.A N    GLU 119.A O    no hydrogen  3.265  N/A
SER 123.A N    GLU 119.A O    no hydrogen  2.979  N/A
SER 123.A OG   GLU 119.A O    no hydrogen  3.139  N/A
SER 123.A OG   GLU 124.A OE2  no hydrogen  2.644  N/A
GLU 124.A N    ILE 120.A O    no hydrogen  3.007  N/A
PHE 126.A N    LEU 121.A O    no hydrogen  2.857  N/A
ASP 127.A N    ARG 26.A O     no hydrogen  2.824  N/A
ILE 129.A N    VAL 164.A O    no hydrogen  2.637  N/A
ALA 130.A N    LEU 28.A O     no hydrogen  2.818  N/A
THR 131.A N    ARG 166.A O    no hydrogen  2.809  N/A
THR 131.A OG1  TYR 114.A OH   no hydrogen  3.242  N/A
HIS 134.A N    ASP 137.A OD2  no hydrogen  3.075  N/A
HIS 134.A ND1  ALA 132.A O    no hydrogen  3.146  N/A
LEU 135.A N    VAL 172.A O    no hydrogen  2.859  N/A
ASN 136.A ND2  GLU 220.A OE2  no hydrogen  2.905  N/A
LEU 138.A N    HIS 134.A O    no hydrogen  3.007  N/A
LEU 139.A N    LEU 135.A O    no hydrogen  2.951  N/A
GLU 140.A N    ASN 136.A O    no hydrogen  3.102  N/A
THR 141.A N    ASP 137.A O    no hydrogen  2.981  N/A
THR 141.A OG1  ASP 137.A O    no hydrogen  2.908  N/A
SER 142.A N    LEU 138.A O    no hydrogen  2.775  N/A
SER 142.A OG   LEU 155.A O    no hydrogen  2.745  N/A
LEU 143.A N    LEU 139.A O    no hydrogen  2.978  N/A
LEU 144.A N    GLU 140.A O    no hydrogen  2.971  N/A
PHE 145.A N    THR 141.A O    no hydrogen  3.300  N/A
PHE 145.A N    SER 142.A O    no hydrogen  3.188  N/A
PHE 146.A N    SER 142.A O    no hydrogen  3.132  N/A
THR 147.A N    LEU 143.A O    no hydrogen  3.122  N/A
THR 147.A OG1  LEU 143.A O    no hydrogen  2.835  N/A
ARG 148.A N    LEU 144.A O    no hydrogen  3.141  N/A
GLY 149.A N    PHE 145.A O    no hydrogen  2.900  N/A
THR 150.A OG1  GLY 151.A O    no hydrogen  2.891  N/A
LEU 155.A N    GLY 151.A O    no hydrogen  3.373  N/A
ILE 156.A N    LEU 152.A O    no hydrogen  3.082  N/A
GLY 157.A N    ASP 153.A O    no hydrogen  3.196  N/A
GLY 157.A N    GLY 154.A O    no hydrogen  3.121  N/A
GLU 162.A N    ILE 165.A O    no hydrogen  3.026  N/A
ILE 165.A N    GLU 162.A O    no hydrogen  2.960  N/A
ARG 166.A N    ILE 129.A O    no hydrogen  2.657  N/A
ARG 166.A NE   ILE 20.A O     no hydrogen  3.011  N/A
ARG 166.A NE   GLU 24.A OE2   no hydrogen  3.288  N/A
ARG 166.A NH1  ILE 165.A O    no hydrogen  2.992  N/A
ARG 166.A NH2  GLU 24.A OE2   no hydrogen  2.858  N/A
ARG 167.A N    PRO 160.A O    no hydrogen  2.817  N/A
ARG 167.A NE   LEU 159.A O    no hydrogen  3.004  N/A
ARG 167.A NH2  GLU 162.A OE1  no hydrogen  3.099  N/A
TYR 170.A N    ARG 167.A O    no hydrogen  3.167  N/A
TYR 171.A OH   ASP 17.A OD2   no hydrogen  2.757  N/A
VAL 172.A N    LEU 169.A O    no hydrogen  2.815  N/A
LYS 173.A N    GLU 176.A OE1  no hydrogen  3.049  N/A
LYS 173.A NZ   ASP 221.A OD1  no hydrogen  3.485  N/A
LYS 173.A NZ   ASP 221.A OD2  no hydrogen  3.136  N/A
ARG 174.A N    ASN 136.A OD1  no hydrogen  2.828  N/A
GLU 176.A N    LYS 173.A O    no hydrogen  2.946  N/A
ILE 177.A N    LYS 173.A O    no hydrogen  3.152  N/A
GLU 178.A N    ARG 174.A O    no hydrogen  3.044  N/A
GLU 179.A N    SER 175.A O    no hydrogen  3.018  N/A
TYR 180.A N    GLU 176.A O    no hydrogen  2.933  N/A
TYR 180.A OH   ASP 42.A OD1   no hydrogen  2.553  N/A
ALA 181.A N    ILE 177.A O    no hydrogen  3.114  N/A
LYS 182.A N    GLU 178.A O    no hydrogen  3.034  N/A
PHE 183.A N    GLU 179.A O    no hydrogen  2.976  N/A
LYS 184.A N    TYR 180.A O    no hydrogen  2.992  N/A
LYS 184.A NZ   GLU 4.A OE2    no hydrogen  2.704  N/A
GLY 185.A N    LYS 182.A O    no hydrogen  2.840  N/A
LEU 186.A N    ALA 181.A O    no hydrogen  2.741  N/A
VAL 189.A N    GLY 33.A O     no hydrogen  3.027  N/A
THR 193.A N    ASP 191.A OD1  no hydrogen  2.718  N/A
ASN 194.A N    ASP 191.A O    no hydrogen  3.286  N/A
ASN 194.A ND2  ASP 191.A O    no hydrogen  3.081  N/A
TYR 195.A N    GLU 192.A O    no hydrogen  3.024  N/A
GLU 196.A N    THR 193.A O    no hydrogen  3.182  N/A
SER 198.A N    GLU 106.A OE1  no hydrogen  3.198  N/A
ARG 201.A N    SER 198.A OG   no hydrogen  3.324  N/A
ARG 201.A NH1  GLU 106.A OE1  no hydrogen  3.031  N/A
ASN 202.A N    SER 198.A O    no hydrogen  3.057  N/A
ARG 203.A N    ILE 199.A O    no hydrogen  2.970  N/A
ILE 204.A N    PRO 200.A O    no hydrogen  3.186  N/A
ARG 205.A N    ARG 201.A O    no hydrogen  2.802  N/A
ARG 205.A NH1  GLU 140.A OE1  no hydrogen  2.966  N/A
ARG 205.A NH1  GLU 140.A OE2  no hydrogen  3.491  N/A
HIS 206.A N    ASN 202.A O    no hydrogen  2.882  N/A
ARG 207.A N    ARG 203.A O    no hydrogen  2.959  N/A
VAL 208.A N    ARG 203.A O    no hydrogen  2.986  N/A
ILE 209.A N    ILE 204.A O    no hydrogen  2.816  N/A
GLU 211.A N    ARG 207.A O    no hydrogen  3.451  N/A
LEU 212.A N    VAL 208.A O    no hydrogen  2.930  N/A
LYS 213.A N    ILE 209.A O    no hydrogen  2.837  N/A
LYS 213.A NZ   GLU 220.A OE2  no hydrogen  2.952  N/A
ARG 214.A N    GLU 211.A O    no hydrogen  3.104  N/A
ILE 215.A N    LEU 212.A O    no hydrogen  3.018  N/A
ASN 216.A N    LEU 212.A O    no hydrogen  2.904  N/A
ASN 218.A N    ASN 216.A OD1  no hydrogen  2.913  N/A
GLU 220.A N    GLU 220.A OE1  no hydrogen  2.807  N/A
THR 222.A N    ASN 218.A O    no hydrogen  3.087  N/A
PHE 223.A N    LEU 219.A O    no hydrogen  2.746  N/A
LEU 224.A N    GLU 220.A O    no hydrogen  2.988  N/A
MET 226.A N    THR 222.A O    no hydrogen  3.310  N/A
VAL 227.A N    PHE 223.A O    no hydrogen  2.966  N/A
LYS 228.A N    LEU 224.A O    no hydrogen  3.028  N/A
VAL 229.A N    LYS 225.A O    no hydrogen  2.940  N/A
LEU 230.A N    MET 226.A O    no hydrogen  2.706  N/A
ARG 231.A N    VAL 227.A O    no hydrogen  2.772  N/A
ARG 231.A NH1  GLU 18.A OE2   no hydrogen  3.410  N/A
ARG 231.A NH2  GLU 18.A OE1   no hydrogen  3.346  N/A
ARG 231.A NH2  GLU 18.A OE2   no hydrogen  3.295  N/A
ALA 232.A N    LYS 228.A O    no hydrogen  3.292  N/A
ALA 232.A N    VAL 229.A O    no hydrogen  3.196  N/A
GLU 233.A N    VAL 229.A O    no hydrogen  3.055  N/A
ARG 234.A N    LEU 230.A O    no hydrogen  2.782  N/A
ARG 234.A NE   ASP 153.A OD1  no hydrogen  2.922  N/A
ARG 234.A NH2  ASP 153.A OD1  no hydrogen  3.241  N/A
GLU 235.A N    ARG 231.A O    no hydrogen  3.009  N/A
PHE 236.A N    ALA 232.A O    no hydrogen  3.032  N/A
LEU 237.A N    GLU 233.A O    no hydrogen  3.042  N/A
GLU 238.A N    ARG 234.A O    no hydrogen  2.823  N/A
GLU 239.A N    GLU 235.A O    no hydrogen  2.928  N/A
GLU 240.A N    PHE 236.A O    no hydrogen  2.954  N/A
ALA 241.A N    LEU 237.A O    no hydrogen  2.915  N/A
GLN 242.A N    GLU 238.A O    no hydrogen  2.964  N/A
LYS 243.A N    GLU 239.A O    no hydrogen  3.270  N/A
LYS 243.A NZ   GLU 240.A OE2  no hydrogen  3.013  N/A
LEU 244.A N    GLU 240.A O    no hydrogen  3.163  N/A
TYR 245.A N    ALA 241.A O    no hydrogen  2.979  N/A
LYS 246.A N    GLN 242.A O    no hydrogen  3.062  N/A
GLU 247.A N    LEU 244.A O    no hydrogen  3.130  N/A
VAL 248.A N    LEU 244.A O    no hydrogen  2.939  N/A
VAL 248.A N    TYR 245.A O    no hydrogen  3.322  N/A
LYS 249.A N    TYR 245.A O    no hydrogen  2.992  N/A
LYS 249.A NZ   TYR 245.A OH   no hydrogen  2.881  N/A
LYS 250.A N    CYS 253.A O    no hydrogen  3.042  N/A
CYS 253.A N    LYS 250.A O    no hydrogen  3.297  N/A
LEU 254.A N    ARG 309.A O    no hydrogen  3.134  N/A
ASP 255.A N    VAL 248.A O    no hydrogen  2.699  N/A
VAL 256.A N    LYS 307.A O    no hydrogen  2.658  N/A
LYS 258.A N    ASP 255.A O    no hydrogen  3.096  N/A
LEU 259.A N    ASP 255.A O    no hydrogen  2.987  N/A
LYS 260.A N    VAL 256.A O    no hydrogen  3.172  N/A
GLU 261.A N    LYS 258.A O    no hydrogen  3.383  N/A
LYS 262.A N    LEU 259.A O    no hydrogen  2.760  N/A
LYS 262.A NZ   GLU 247.A OE2  no hydrogen  3.356  N/A
GLN 267.A N    PRO 263.A O    no hydrogen  2.984  N/A
GLN 267.A NE2  LEU 259.A O    no hydrogen  3.018  N/A
ARG 268.A N    LEU 264.A O    no hydrogen  3.126  N/A
ARG 268.A NE   GLU 284.A OE2  no hydrogen  2.632  N/A
ARG 269.A N    ALA 265.A O    no hydrogen  3.160  N/A
VAL 270.A N    LEU 266.A O    no hydrogen  2.887  N/A
ILE 271.A N    GLN 267.A O    no hydrogen  3.124  N/A
ARG 272.A N    ARG 268.A O    no hydrogen  2.745  N/A
LYS 273.A N    ARG 269.A O    no hydrogen  3.136  N/A
LYS 273.A NZ   GLN 242.A OE1  no hydrogen  2.425  N/A
PHE 274.A N    VAL 270.A O    no hydrogen  2.968  N/A
ILE 275.A N    ILE 271.A O    no hydrogen  3.080  N/A
GLY 276.A N    LYS 273.A O    no hydrogen  3.095  N/A
GLU 277.A N    ARG 272.A O    no hydrogen  3.228  N/A
VAL 283.A N    ASP 279.A O    no hydrogen  3.018  N/A
GLU 284.A N    TYR 280.A O    no hydrogen  3.357  N/A
LEU 285.A N    GLU 281.A O    no hydrogen  3.074  N/A
VAL 286.A N    LYS 282.A O    no hydrogen  3.030  N/A
ARG 287.A N    VAL 283.A O    no hydrogen  2.686  N/A
ARG 287.A NE   GLU 284.A OE1  no hydrogen  2.939  N/A
ARG 287.A NE   GLU 284.A OE2  no hydrogen  3.388  N/A
ARG 287.A NH1  GLN 267.A OE1  no hydrogen  3.116  N/A
ARG 287.A NH2  GLU 284.A OE1  no hydrogen  3.281  N/A
SER 288.A N    GLU 284.A O    no hydrogen  2.983  N/A
SER 288.A OG   LEU 285.A O    no hydrogen  2.628  N/A
LEU 289.A N    VAL 286.A O    no hydrogen  3.050  N/A
LEU 290.A N    ARG 287.A O    no hydrogen  2.953  N/A
GLU 291.A N    SER 288.A O    no hydrogen  3.046  N/A
LYS 292.A N    SER 288.A O    no hydrogen  3.390  N/A
VAL 296.A N    LYS 302.A O    no hydrogen  3.139  N/A
ASN 297.A ND2  LYS 300.A O    no hydrogen  3.449  N/A
LEU 298.A N    LYS 300.A O    no hydrogen  3.370  N/A
LYS 300.A NZ   ILE 275.A O    no hydrogen  2.866  N/A
LYS 300.A NZ   GLU 277.A OE1  no hydrogen  3.239  N/A
LYS 302.A N    VAL 296.A O    no hydrogen  3.133  N/A
LEU 304.A N    GLY 294.A O    no hydrogen  3.115  N/A
LYS 305.A N    GLU 308.A O    no hydrogen  3.353  N/A
GLU 308.A N    LYS 305.A O    no hydrogen  3.364  N/A
ARG 309.A NH1  VAL 286.A O    no hydrogen  2.444  N/A
ARG 309.A NH2  VAL 286.A O    no hydrogen  2.634  N/A
TRP 310.A N    VAL 303.A O    no hydrogen  3.333  N/A