HEADSC 2mej
SEQCRD    A G GLY ---     1      - - - 0
SEQCRD    A H HIS ---     2      - - - 0
SEQCRD    A S SER ---     3      - - - 0
SEQCRD    A M MET MET     4      4 C C 0
SEQCRD    A S SER SER     5      5 C C 0
SEQCRD    A Q GLN GLN     6      6 H H 0
SEQCRD    A S SER SER     7      7 H H 0
SEQCRD    A N ASN ASN     8      8 H H 0
SEQCRD    A R ARG ARG     9      9 H H 0
SEQCRD    A E GLU GLU    10     10 H H 0
SEQCRD    A L LEU LEU    11     11 H H 0
SEQCRD    A V VAL VAL    12     12 H H 0
SEQCRD    A V VAL VAL    13     13 H H 0
SEQCRD    A D ASP ASP    14     14 H H 0
SEQCRD    A F PHE PHE    15     15 H H 0
SEQCRD    A L LEU LEU    16     16 H H 0
SEQCRD    A S SER SER    17     17 H H 0
SEQCRD    A Y TYR TYR    18     18 H H 0
SEQCRD    A K LYS LYS    19     19 H H 0
SEQCRD    A L LEU LEU    20     20 H H 0
SEQCRD    A S SER SER    21     21 H H 0
SEQCRD    A Q GLN GLN    22     22 C C 0
SEQCRD    A K LYS LYS    23     23 C C 0
SEQCRD    A G GLY GLY    24     24 C C 0
SEQCRD    A Y TYR TYR    25     25 C C 0
SEQCRD    A S SER SER    26     26 H H 0
SEQCRD    A W TRP TRP    27     27 H H 0
SEQCRD    A S SER SER    28     28 H H 0
SEQCRD    A Q GLN GLN    29     29 H H 0
SEQCRD    A F PHE PHE    30     30 H H 0
SEQCRD    A S SER SER    31     31 H H 0
SEQCRD    A D ASP ---    32      - - - 0
SEQCRD    A V VAL ---    33      - - - 0
SEQCRD    A E GLU ---    34      - - - 0
SEQCRD    A E GLU ---    35      - - - 0
SEQCRD    A N ASN ---    36      - - - 0
SEQCRD    A R ARG ---    37      - - - 0
SEQCRD    A T THR ---    38      - - - 0
SEQCRD    A E GLU ---    39      - - - 0
SEQCRD    A A ALA ---    40      - - - 0
SEQCRD    A P PRO ---    41      - - - 0
SEQCRD    A E GLU ---    42      - - - 0
SEQCRD    A G GLY ---    43      - - - 0
SEQCRD    A T THR ---    44      - - - 0
SEQCRD    A E GLU ---    45      - - - 0
SEQCRD    A S SER ---    46      - - - 0
SEQCRD    A E GLU ---    47      - - - 0
SEQCRD    A M MET ---    48      - - - 0
SEQCRD    A E GLU ---    49      - - - 0
SEQCRD    A T THR ---    50      - - - 0
SEQCRD    A P PRO ---    51      - - - 0
SEQCRD    A S SER ---    52      - - - 0
SEQCRD    A A ALA ---    53      - - - 0
SEQCRD    A I ILE ---    54      - - - 0
SEQCRD    A N ASN ---    55      - - - 0
SEQCRD    A G GLY ---    56      - - - 0
SEQCRD    A N ASN ---    57      - - - 0
SEQCRD    A P PRO ---    58      - - - 0
SEQCRD    A S SER ---    59      - - - 0
SEQCRD    A W TRP ---    60      - - - 0
SEQCRD    A H HIS ---    61      - - - 0
SEQCRD    A L LEU ---    62      - - - 0
SEQCRD    A A ALA ---    63      - - - 0
SEQCRD    A D ASP ---    64      - - - 0
SEQCRD    A S SER ---    65      - - - 0
SEQCRD    A P PRO ---    66      - - - 0
SEQCRD    A A ALA ---    67      - - - 0
SEQCRD    A V VAL ---    68      - - - 0
SEQCRD    A N ASN ---    69      - - - 0
SEQCRD    A G GLY ---    70      - - - 0
SEQCRD    A A ALA ---    71      - - - 0
SEQCRD    A T THR ---    72      - - - 0
SEQCRD    A G GLY ---    73      - - - 0
SEQCRD    A H HIS ---    74      - - - 0
SEQCRD    A S SER ---    75      - - - 0
SEQCRD    A S SER ---    76      - - - 0
SEQCRD    A S SER ---    77      - - - 0
SEQCRD    A L LEU ---    78      - - - 0
SEQCRD    A D ASP ---    79      - - - 0
SEQCRD    A A ALA ---    80      - - - 0
SEQCRD    A R ARG ---    81      - - - 0
SEQCRD    A E GLU ---    82      - - - 0
SEQCRD    A V VAL ---    83      - - - 0
SEQCRD    A I ILE ---    84      - - - 0
SEQCRD    A P PRO ---    85      - - - 0
SEQCRD    A M MET MET    86     86 C C 0
SEQCRD    A A ALA ALA    87     87 C C 0
SEQCRD    A A ALA ALA    88     88 H H 0
SEQCRD    A V VAL VAL    89     89 H H 0
SEQCRD    A K LYS LYS    90     90 H H 0
SEQCRD    A Q GLN GLN    91     91 H H 0
SEQCRD    A A ALA ALA    92     92 H H 0
SEQCRD    A L LEU LEU    93     93 H H 0
SEQCRD    A R ARG ARG    94     94 H H 0
SEQCRD    A E GLU GLU    95     95 H H 0
SEQCRD    A A ALA ALA    96     96 H H 0
SEQCRD    A G GLY GLY    97     97 H H 0
SEQCRD    A D ASP ASP    98     98 H H 0
SEQCRD    A E GLU GLU    99     99 H H 0
SEQCRD    A F PHE PHE   100    100 H H 0
SEQCRD    A E GLU GLU   101    101 H H 0
SEQCRD    A L LEU LEU   102    102 H H 0
SEQCRD    A R ARG ARG   103    103 H H 0
SEQCRD    A Y TYR TYR   104    104 H H 0
SEQCRD    A R ARG ARG   105    105 H H 0
SEQCRD    A R ARG ARG   106    106 C C 0
SEQCRD    A A ALA ALA   107    107 C C 0
SEQCRD    A F PHE PHE   108    108 C C 0
SEQCRD    A S SER SER   109    109 H H 0
SEQCRD    A D ASP ASP   110    110 H H 0
SEQCRD    A L LEU LEU   111    111 H H 0
SEQCRD    A T THR THR   112    112 H H 0
SEQCRD    A S SER SER   113    113 H H 0
SEQCRD    A Q GLN GLN   114    114 H H 0
SEQCRD    A L LEU LEU   115    115 H H 0
SEQCRD    A H HIS HIS   116    116 C C 0
SEQCRD    A I ILE ILE   117    117 C C 0
SEQCRD    A T THR THR   118    118 C C 0
SEQCRD    A P PRO PRO   119    119 C C 0
SEQCRD    A G GLY GLY   120    120 C C 0
SEQCRD    A T THR THR   121    121 C C 0
SEQCRD    A A ALA ALA   122    122 C C 0
SEQCRD    A Y TYR TYR   123    123 H H 0
SEQCRD    A Q GLN GLN   124    124 H H 0
SEQCRD    A S SER SER   125    125 H H 0
SEQCRD    A F PHE PHE   126    126 H H 0
SEQCRD    A E GLU GLU   127    127 H H 0
SEQCRD    A Q GLN GLN   128    128 H H 0
SEQCRD    A V VAL VAL   129    129 H H 0
SEQCRD    A V VAL VAL   130    130 H H 0
SEQCRD    A N ASN ASN   131    131 H H 0
SEQCRD    A E GLU GLU   132    132 H H 0
SEQCRD    A L LEU LEU   133    133 H H 0
SEQCRD    A F PHE PHE   134    134 H H 0
SEQCRD    A R ARG ARG   135    135 H H 0
SEQCRD    A D ASP ASP   136    136 C C 0
SEQCRD    A G GLY GLY   137    137 C C 0
SEQCRD    A V VAL VAL   138    138 C C 0
SEQCRD    A N ASN ASN   139    139 H H 0
SEQCRD    A W TRP TRP   140    140 H H 0
SEQCRD    A G GLY GLY   141    141 H H 0
SEQCRD    A R ARG ARG   142    142 H H 0
SEQCRD    A I ILE ILE   143    143 H H 0
SEQCRD    A V VAL VAL   144    144 H H 0
SEQCRD    A A ALA ALA   145    145 H H 0
SEQCRD    A F PHE PHE   146    146 H H 0
SEQCRD    A F PHE PHE   147    147 H H 0
SEQCRD    A S SER SER   148    148 H H 0
SEQCRD    A F PHE PHE   149    149 H H 0
SEQCRD    A G GLY GLY   150    150 H H 0
SEQCRD    A G GLY GLY   151    151 H H 0
SEQCRD    A A ALA ALA   152    152 H H 0
SEQCRD    A L LEU LEU   153    153 H H 0
SEQCRD    A C CYS CYS   154    154 H H 0
SEQCRD    A V VAL VAL   155    155 H H 0
SEQCRD    A E GLU GLU   156    156 H H 0
SEQCRD    A S SER SER   157    157 H H 0
SEQCRD    A V VAL VAL   158    158 H H 0
SEQCRD    A D ASP ASP   159    159 H H 0
SEQCRD    A K LYS LYS   160    160 H H 0
SEQCRD    A E GLU GLU   161    161 C C 0
SEQCRD    A M MET MET   162    162 C C 0
SEQCRD    A Q GLN GLN   163    163 H H 0
SEQCRD    A V VAL VAL   164    164 H H 0
SEQCRD    A L LEU LEU   165    165 H H 0
SEQCRD    A V VAL VAL   166    166 H H 0
SEQCRD    A S SER SER   167    167 H H 0
SEQCRD    A R ARG ARG   168    168 H H 0
SEQCRD    A I ILE ILE   169    169 H H 0
SEQCRD    A A ALA ALA   170    170 H H 0
SEQCRD    A A ALA ALA   171    171 H H 0
SEQCRD    A W TRP TRP   172    172 H H 0
SEQCRD    A M MET MET   173    173 H H 0
SEQCRD    A A ALA ALA   174    174 H H 0
SEQCRD    A T THR THR   175    175 H H 0
SEQCRD    A Y TYR TYR   176    176 H H 0
SEQCRD    A L LEU LEU   177    177 H H 0
SEQCRD    A N ASN ASN   178    178 H H 0
SEQCRD    A D ASP ASP   179    179 H H 0
SEQCRD    A H HIS HIS   180    180 H H 0
SEQCRD    A L LEU LEU   181    181 H H 0
SEQCRD    A E GLU GLU   182    182 H H 0
SEQCRD    A P PRO PRO   183    183 H H 0
SEQCRD    A W TRP TRP   184    184 H H 0
SEQCRD    A I ILE ILE   185    185 H H 0
SEQCRD    A Q GLN GLN   186    186 H H 0
SEQCRD    A E GLU GLU   187    187 H H 0
SEQCRD    A N ASN ASN   188    188 H H 0
SEQCRD    A G GLY GLY   189    189 H H 0
SEQCRD    A G GLY GLY   190    190 H H 0
SEQCRD    A W TRP TRP   191    191 H H 0
SEQCRD    A D ASP ASP   192    192 H H 0
SEQCRD    A T THR THR   193    193 H H 0
SEQCRD    A F PHE PHE   194    194 H H 0
SEQCRD    A V VAL VAL   195    195 H H 0
SEQCRD    A E GLU GLU   196    196 H H 0
SEQCRD    A L LEU LEU   197    197 H H 0
SEQCRD    A Y TYR TYR   198    198 H H 0
SEQCRD    A G GLY GLY   199    199 H H 0
SEQCRD    A N ASN ASN   200    200 C C 0
SEQCRD    A N ASN ASN   201    201 C C 0
SEQCRD    B S SER SER     1     96 C C 0
SEQCRD    B V VAL VAL     2     97 C C 0
SEQCRD    B P PRO PRO     3     98 C C 0
SEQCRD    B S SER SER     4     99 C C 0
SEQCRD    B Q GLN GLN     5    100 C C 0
SEQCRD    B K LYS LYS     6    101 C C 0
SEQCRD    B T THR THR     7    102 C C 0
SEQCRD    B Y TYR TYR     8    103 C C 0
SEQCRD    B Q GLN GLN     9    104 C C 0
SEQCRD    B G GLY GLY    10    105 C C 0
SEQCRD    B S SER SER    11    106 C C 0
SEQCRD    B Y TYR TYR    12    107 C C 0
SEQCRD    B G GLY GLY    13    108 C C 0
SEQCRD    B F PHE PHE    14    109 E E 0
SEQCRD    B R ARG ARG    15    110 E E 0
SEQCRD    B L LEU LEU    16    111 E E 0
SEQCRD    B G GLY GLY    17    112 E E 0
SEQCRD    B F PHE PHE    18    113 E E 0
SEQCRD    B L LEU LEU    19    114 C C 0
SEQCRD    B H HIS HIS    20    115 C C 0
SEQCRD    B S SER SER    21    116 C C 0
SEQCRD    B G GLY GLY    22    117 C C 0
SEQCRD    B T THR THR    23    118 C C 0
SEQCRD    B A ALA ALA    24    119 C C 0
SEQCRD    B K LYS LYS    25    120 C C 0
SEQCRD    B S SER SER    26    121 C C 0
SEQCRD    B V VAL VAL    27    122 C C 0
SEQCRD    B T THR THR    28    123 C C 0
SEQCRD    B C CYS CYS    29    124 E E 0
SEQCRD    B T THR THR    30    125 E E 0
SEQCRD    B Y TYR TYR    31    126 E E 0
SEQCRD    B S SER SER    32    127 E E 0
SEQCRD    B P PRO PRO    33    128 C C 0
SEQCRD    B A ALA ALA    34    129 C C 0
SEQCRD    B L LEU LEU    35    130 C C 0
SEQCRD    B N ASN ASN    36    131 C C 0
SEQCRD    B K LYS LYS    37    132 E E 0
SEQCRD    B M MET MET    38    133 E E 0
SEQCRD    B F PHE PHE    39    134 E E 0
SEQCRD    B C CYS CYS    40    135 E E 0
SEQCRD    B Q GLN GLN    41    136 E E 0
SEQCRD    B L LEU LEU    42    137 C C 0
SEQCRD    B A ALA ALA    43    138 C C 0
SEQCRD    B K LYS LYS    44    139 C C 0
SEQCRD    B T THR THR    45    140 E E 0
SEQCRD    B C CYS CYS    46    141 E E 0
SEQCRD    B P PRO PRO    47    142 E E 0
SEQCRD    B V VAL VAL    48    143 E E 0
SEQCRD    B Q GLN GLN    49    144 E E 0
SEQCRD    B L LEU LEU    50    145 E E 0
SEQCRD    B W TRP TRP    51    146 E E 0
SEQCRD    B V VAL VAL    52    147 E E 0
SEQCRD    B D ASP ASP    53    148 C C 0
SEQCRD    B S SER SER    54    149 C C 0
SEQCRD    B T THR THR    55    150 C C 0
SEQCRD    B P PRO PRO    56    151 C C 0
SEQCRD    B P PRO PRO    57    152 C C 0
SEQCRD    B P PRO PRO    58    153 C C 0
SEQCRD    B G GLY GLY    59    154 C C 0
SEQCRD    B T THR THR    60    155 C C 0
SEQCRD    B R ARG ARG    61    156 E E 0
SEQCRD    B V VAL VAL    62    157 E E 0
SEQCRD    B R ARG ARG    63    158 E E 0
SEQCRD    B A ALA ALA    64    159 E E 0
SEQCRD    B M MET MET    65    160 E E 0
SEQCRD    B A ALA ALA    66    161 E E 0
SEQCRD    B I ILE ILE    67    162 E E 0
SEQCRD    B Y TYR TYR    68    163 E E 0
SEQCRD    B K LYS LYS    69    164 C C 0
SEQCRD    B Q GLN GLN    70    165 H H 0
SEQCRD    B S SER SER    71    166 H H 0
SEQCRD    B Q GLN GLN    72    167 H H 0
SEQCRD    B H HIS HIS    73    168 H H 0
SEQCRD    B M MET MET    74    169 H H 0
SEQCRD    B T THR THR    75    170 C C 0
SEQCRD    B E GLU GLU    76    171 C C 0
SEQCRD    B V VAL VAL    77    172 C C 0
SEQCRD    B V VAL VAL    78    173 C C 0
SEQCRD    B R ARG ARG    79    174 C C 0
SEQCRD    B R ARG ARG    80    175 C C 0
SEQCRD    B C CYS CYS    81    176 C C 0
SEQCRD    B P PRO PRO    82    177 C C 0
SEQCRD    B H HIS HIS    83    178 C C 0
SEQCRD    B H HIS HIS    84    179 H H 0
SEQCRD    B E GLU GLU    85    180 H H 0
SEQCRD    B R ARG ARG    86    181 H H 0
SEQCRD    B C CYS CYS    87    182 H H 0
SEQCRD    B S SER SER    88    183 H H 0
SEQCRD    B D ASP ASP    89    184 C C 0
SEQCRD    B S SER SER    90    185 C C 0
SEQCRD    B D ASP ASP    91    186 C C 0
SEQCRD    B G GLY GLY    92    187 C C 0
SEQCRD    B L LEU LEU    93    188 C C 0
SEQCRD    B A ALA ALA    94    189 C C 0
SEQCRD    B P PRO PRO    95    190 C C 0
SEQCRD    B P PRO PRO    96    191 C C 0
SEQCRD    B Q GLN GLN    97    192 C C 0
SEQCRD    B H HIS HIS    98    193 C C 0
SEQCRD    B L LEU LEU    99    194 C C 0
SEQCRD    B I ILE ILE   100    195 E E 0
SEQCRD    B R ARG ARG   101    196 E E 0
SEQCRD    B V VAL VAL   102    197 E E 0
SEQCRD    B E GLU GLU   103    198 E E 0
SEQCRD    B G GLY GLY   104    199 C C 0
SEQCRD    B N ASN ASN   105    200 C C 0
SEQCRD    B L LEU LEU   106    201 C C 0
SEQCRD    B R ARG ARG   107    202 C C 0
SEQCRD    B V VAL VAL   108    203 C C 0
SEQCRD    B E GLU GLU   109    204 E E 0
SEQCRD    B Y TYR TYR   110    205 E E 0
SEQCRD    B L LEU LEU   111    206 E E 0
SEQCRD    B D ASP ASP   112    207 E E 0
SEQCRD    B D ASP ASP   113    208 C C 0
SEQCRD    B R ARG ARG   114    209 C C 0
SEQCRD    B N ASN ASN   115    210 C C 0
SEQCRD    B T THR THR   116    211 C C 0
SEQCRD    B F PHE PHE   117    212 C C 0
SEQCRD    B R ARG ARG   118    213 C C 0
SEQCRD    B H HIS HIS   119    214 E E 0
SEQCRD    B S SER SER   120    215 E E 0
SEQCRD    B V VAL VAL   121    216 E E 0
SEQCRD    B V VAL VAL   122    217 E E 0
SEQCRD    B V VAL VAL   123    218 E E 0
SEQCRD    B P PRO PRO   124    219 E E 0
SEQCRD    B Y TYR TYR   125    220 C C 0
SEQCRD    B E GLU GLU   126    221 C C 0
SEQCRD    B P PRO PRO   127    222 C C 0
SEQCRD    B P PRO PRO   128    223 C C 0
SEQCRD    B E GLU GLU   129    224 C C 0
SEQCRD    B V VAL VAL   130    225 C C 0
SEQCRD    B G GLY GLY   131    226 C C 0
SEQCRD    B S SER SER   132    227 C C 0
SEQCRD    B D ASP ASP   133    228 C C 0
SEQCRD    B C CYS CYS   134    229 C C 0
SEQCRD    B T THR THR   135    230 E E 0
SEQCRD    B T THR THR   136    231 E E 0
SEQCRD    B I ILE ILE   137    232 E E 0
SEQCRD    B H HIS HIS   138    233 E E 0
SEQCRD    B Y TYR TYR   139    234 E E 0
SEQCRD    B N ASN ASN   140    235 E E 0
SEQCRD    B Y TYR TYR   141    236 E E 0
SEQCRD    B M MET MET   142    237 C C 0
SEQCRD    B C CYS CYS   143    238 C C 0
SEQCRD    B N ASN ASN   144    239 C C 0
SEQCRD    B S SER SER   145    240 C C 0
SEQCRD    B S SER SER   146    241 C C 0
SEQCRD    B C CYS CYS   147    242 C C 0
SEQCRD    B M MET MET   148    243 C C 0
SEQCRD    B G GLY GLY   149    244 C C 0
SEQCRD    B G GLY GLY   150    245 C C 0
SEQCRD    B M MET MET   151    246 C C 0
SEQCRD    B N ASN ASN   152    247 C C 0
SEQCRD    B R ARG ARG   153    248 C C 0
SEQCRD    B R ARG ARG   154    249 C C 0
SEQCRD    B P PRO PRO   155    250 C C 0
SEQCRD    B I ILE ILE   156    251 E E 0
SEQCRD    B L LEU LEU   157    252 E E 0
SEQCRD    B T THR THR   158    253 E E 0
SEQCRD    B I ILE ILE   159    254 E E 0
SEQCRD    B I ILE ILE   160    255 E E 0
SEQCRD    B T THR THR   161    256 E E 0
SEQCRD    B L LEU LEU   162    257 E E 0
SEQCRD    B E GLU GLU   163    258 E E 0
SEQCRD    B D ASP ASP   164    259 C C 0
SEQCRD    B S SER SER   165    260 C C 0
SEQCRD    B S SER SER   166    261 C C 0
SEQCRD    B G GLY GLY   167    262 C C 0
SEQCRD    B N ASN ASN   168    263 C C 0
SEQCRD    B L LEU LEU   169    264 E E 0
SEQCRD    B L LEU LEU   170    265 E E 0
SEQCRD    B G GLY GLY   171    266 E E 0
SEQCRD    B R ARG ARG   172    267 E E 0
SEQCRD    B N ASN ASN   173    268 E E 0
SEQCRD    B S SER SER   174    269 E E 0
SEQCRD    B F PHE PHE   175    270 E E 0
SEQCRD    B E GLU GLU   176    271 E E 0
SEQCRD    B V VAL VAL   177    272 E E 0
SEQCRD    B R ARG ARG   178    273 E E 0
SEQCRD    B V VAL VAL   179    274 E E 0
SEQCRD    B C CYS CYS   180    275 E E 0
SEQCRD    B A ALA ALA   181    276 C C 0
SEQCRD    B C CYS CYS   182    277 H H 0
SEQCRD    B P PRO PRO   183    278 H H 0
SEQCRD    B G GLY GLY   184    279 H H 0
SEQCRD    B R ARG ARG   185    280 H H 0
SEQCRD    B D ASP ASP   186    281 H H 0
SEQCRD    B R ARG ARG   187    282 H H 0
SEQCRD    B R ARG ARG   188    283 H H 0
SEQCRD    B T THR THR   189    284 H H 0
SEQCRD    B E GLU GLU   190    285 H H 0
SEQCRD    B E GLU GLU   191    286 H H 0
SEQCRD    B E GLU GLU   192    287 H H 0
SEQCRD    B N ASN ASN   193    288 H H 0
SEQCRD    B L LEU LEU   194    289 H H 0
SEQCRD    B R ARG ARG   195    290 H H 0
SEQCRD    B K LYS ---   196      - - - 0
SEQCRD    B K LYS ---   197      - - - 0
SEQCRD    B G GLY ---   198      - - - 0
SEQCRD    B E GLU ---   199      - - - 0
SEQCRD    B P PRO ---   200      - - - 0
SEQCRD    B H HIS ---   201      - - - 0
SEQCRD    B H HIS ---   202      - - - 0
SEQCRD    B E GLU ---   203      - - - 0
SEQCRD    B L LEU ---   204      - - - 0
SEQCRD    B P PRO ---   205      - - - 0
SEQCRD    B P PRO ---   206      - - - 0
SEQCRD    B G GLY ---   207      - - - 0
SEQCRD    B S SER ---   208      - - - 0
SEQCRD    B T THR ---   209      - - - 0
SEQCRD    B K LYS ---   210      - - - 0
SEQCRD    B R ARG ---   211      - - - 0
SEQCRD    B A ALA ---   212      - - - 0
SEQCRD    B L LEU ---   213      - - - 0
SEQCRD    B P PRO ---   214      - - - 0
SEQCRD    B N ASN ---   215      - - - 0
SEQCRD    B N ASN ---   216      - - - 0
SEQCRD    B T THR ---   217      - - - 0
PARAME method NMR
PARAME resolution NA
PARAME R-factor NA
PARAME FreeR-factor NA