HEADSC 1zbt COMMNT S2C correlation file created: Thu Dec 29 12:54:12 EST 2005 COMMNT COMMNT If you use this database, please cite: COMMNT COMMNT Guoli Wang, Jonathan W. Arthur, and Roland L. Dunbrack, Jr. COMMNT "S2C: A database correlating sequence and atomic COMMNT coordinate numbering in the Protein Data Bank" COMMNT dunbrack.fccc.edu/Guoli/s2c COMMNT Copyright (c) February 2000, April 2002. COMMNT COMMNT SEQCRD columns are as follows: COMMNT COMMNT Column Positions Item COMMNT 1 0-6 Record identifier COMMNT 2 8 Chain COMMNT 3 10 One letter residue code COMMNT 4 12-14 SEQRES three letter residue code COMMNT 5 16-18 ATOM three letter residue code COMMNT 6 20-24 SEQRES residue number COMMNT 7 26-31 ATOM residue number COMMNT 8 33 PDB secondary structure COMMNT 9 35 STRIDE secondary structure COMMNT 10 37-43 Error flags COMMNT COMMNT Secondary structrue annotation: COMMNT H: Helix E: Strand T: Turn COMMNT B: Bridge G: 310Helix C: Coil COMMNT SEQCRD A M MET --- 1 - - - 367 SEQCRD A G GLY --- 2 - - - 367 SEQCRD A S SER --- 3 - - - 367 SEQCRD A D ASP --- 4 - - - 367 SEQCRD A K LYS --- 5 - - - 367 SEQCRD A I ILE --- 6 - - - 367 SEQCRD A H HIS --- 7 - - - 367 SEQCRD A H HIS --- 8 - - - 367 SEQCRD A H HIS --- 9 - - - 367 SEQCRD A H HIS --- 10 - - - 367 SEQCRD A H HIS HIS 11 -1 C C 4 SEQCRD A H HIS HIS 12 0 C C 4 SEQCRD A M MSE MSE 13 1 C C 4 SEQCRD A N ASN ASN 14 2 H C 45 SEQCRD A I ILE ILE 15 3 H H 4 SEQCRD A Y TYR TYR 16 4 H H 4 SEQCRD A D ASP ASP 17 5 H H 4 SEQCRD A Q GLN GLN 18 6 H H 4 SEQCRD A L LEU LEU 19 7 H H 4 SEQCRD A Q GLN GLN 20 8 H H 4 SEQCRD A A ALA ALA 21 9 H H 4 SEQCRD A V VAL VAL 22 10 H H 4 SEQCRD A E GLU GLU 23 11 H H 4 SEQCRD A D ASP ASP 24 12 H H 4 SEQCRD A R ARG ARG 25 13 H H 4 SEQCRD A Y TYR TYR 26 14 H H 4 SEQCRD A E GLU GLU 27 15 H H 4 SEQCRD A E GLU GLU 28 16 H H 4 SEQCRD A L LEU LEU 29 17 H H 4 SEQCRD A G GLY --- 30 - - - 367 SEQCRD A E GLU --- 31 - - - 367 SEQCRD A L LEU --- 32 - - - 367 SEQCRD A L LEU --- 33 - - - 367 SEQCRD A S SER --- 34 - - - 367 SEQCRD A D ASP --- 35 - - - 367 SEQCRD A P PRO --- 36 - - - 367 SEQCRD A D ASP --- 37 - - - 367 SEQCRD A V VAL --- 38 - - - 367 SEQCRD A V VAL --- 39 - - - 367 SEQCRD A S SER --- 40 - - - 367 SEQCRD A D ASP --- 41 - - - 367 SEQCRD A T THR --- 42 - - - 367 SEQCRD A K LYS --- 43 - - - 367 SEQCRD A R ARG --- 44 - - - 367 SEQCRD A F PHE --- 45 - - - 367 SEQCRD A M MSE --- 46 - - - 367 SEQCRD A E GLU --- 47 - - - 367 SEQCRD A L LEU --- 48 - - - 367 SEQCRD A S SER --- 49 - - - 367 SEQCRD A R ARG ARG 50 38 C H 45 SEQCRD A E GLU GLU 51 39 H H 4 SEQCRD A E GLU GLU 52 40 H H 4 SEQCRD A A ALA ALA 53 41 H H 4 SEQCRD A N ASN ASN 54 42 H H 4 SEQCRD A S SER SER 55 43 H H 4 SEQCRD A R ARG ARG 56 44 H H 4 SEQCRD A E GLU GLU 57 45 H H 4 SEQCRD A T THR THR 58 46 H H 4 SEQCRD A V VAL VAL 59 47 H H 4 SEQCRD A A ALA ALA 60 48 H H 4 SEQCRD A V VAL VAL 61 49 H H 4 SEQCRD A Y TYR TYR 62 50 H H 4 SEQCRD A R ARG ARG 63 51 H H 4 SEQCRD A E GLU GLU 64 52 H H 4 SEQCRD A Y TYR TYR 65 53 H H 4 SEQCRD A K LYS LYS 66 54 H H 4 SEQCRD A Q GLN GLN 67 55 H H 4 SEQCRD A V VAL VAL 68 56 H H 4 SEQCRD A V VAL VAL 69 57 H H 4 SEQCRD A Q GLN GLN 70 58 H H 4 SEQCRD A N ASN ASN 71 59 H H 4 SEQCRD A I ILE ILE 72 60 H H 4 SEQCRD A A ALA ALA 73 61 H H 4 SEQCRD A D ASP ASP 74 62 H H 4 SEQCRD A A ALA ALA 75 63 H H 4 SEQCRD A Q GLN GLN 76 64 H H 4 SEQCRD A E GLU GLU 77 65 H H 4 SEQCRD A M MSE MSE 78 66 H H 4 SEQCRD A I ILE --- 79 - - - 367 SEQCRD A K LYS --- 80 - - - 367 SEQCRD A D ASP --- 81 - - - 367 SEQCRD A A ALA --- 82 - - - 367 SEQCRD A S SER --- 83 - - - 367 SEQCRD A G GLY --- 84 - - - 367 SEQCRD A D ASP --- 85 - - - 367 SEQCRD A P PRO PRO 86 74 H H 4 SEQCRD A E GLU GLU 87 75 H H 4 SEQCRD A L LEU LEU 88 76 H H 4 SEQCRD A E GLU GLU 89 77 H H 4 SEQCRD A E GLU GLU 90 78 H H 4 SEQCRD A M MSE MSE 91 79 H H 4 SEQCRD A A ALA ALA 92 80 H H 4 SEQCRD A K LYS LYS 93 81 H H 4 SEQCRD A E GLU GLU 94 82 H H 4 SEQCRD A E GLU GLU 95 83 H H 4 SEQCRD A L LEU LEU 96 84 H H 4 SEQCRD A K LYS LYS 97 85 H H 4 SEQCRD A N ASN ASN 98 86 H H 4 SEQCRD A S SER SER 99 87 H H 4 SEQCRD A K LYS LYS 100 88 H H 4 SEQCRD A V VAL VAL 101 89 H H 4 SEQCRD A A ALA ALA 102 90 H H 4 SEQCRD A K LYS LYS 103 91 H H 4 SEQCRD A E GLU GLU 104 92 H H 4 SEQCRD A E GLU GLU 105 93 H H 4 SEQCRD A Y TYR TYR 106 94 H H 4 SEQCRD A E GLU GLU 107 95 H H 4 SEQCRD A E GLU GLU 108 96 H H 4 SEQCRD A K LYS LYS 109 97 H H 4 SEQCRD A L LEU LEU 110 98 H H 4 SEQCRD A R ARG ARG 111 99 H H 4 SEQCRD A F PHE PHE 112 100 H H 4 SEQCRD A L LEU LEU 113 101 C H 45 SEQCRD A L LEU LEU 114 102 C H 45 SEQCRD A L LEU LEU 115 103 C C 4 SEQCRD A P PRO PRO 116 104 C C 4 SEQCRD A K LYS LYS 117 105 C C 4 SEQCRD A D ASP ASP 118 106 C T 45 SEQCRD A P PRO PRO 119 107 C T 45 SEQCRD A N ASN ASN 120 108 C T 45 SEQCRD A D ASP ASP 121 109 C T 45 SEQCRD A D ASP ASP 122 110 C T 45 SEQCRD A K LYS LYS 123 111 C T 45 SEQCRD A N ASN ASN 124 112 C C 4 SEQCRD A I ILE ILE 125 113 E E 4 SEQCRD A I ILE ILE 126 114 E E 4 SEQCRD A L LEU LEU 127 115 E E 4 SEQCRD A E GLU GLU 128 116 E E 4 SEQCRD A I ILE ILE 129 117 E E 4 SEQCRD A R ARG ARG 130 118 E E 4 SEQCRD A G GLY GLY 131 119 E E 4 SEQCRD A A ALA ALA 132 120 C E 45 SEQCRD A A ALA ALA 133 121 C b 45 SEQCRD A G GLY GLY 134 122 C C 4 SEQCRD A G GLY GLY 135 123 H C 45 SEQCRD A D ASP ASP 136 124 H H 4 SEQCRD A E GLU GLU 137 125 H H 4 SEQCRD A A ALA ALA 138 126 H H 4 SEQCRD A A ALA ALA 139 127 H H 4 SEQCRD A L LEU LEU 140 128 H H 4 SEQCRD A F PHE PHE 141 129 H H 4 SEQCRD A A ALA ALA 142 130 H H 4 SEQCRD A G GLY GLY 143 131 H H 4 SEQCRD A D ASP ASP 144 132 H H 4 SEQCRD A L LEU LEU 145 133 H H 4 SEQCRD A L LEU LEU 146 134 H H 4 SEQCRD A N ASN ASN 147 135 H H 4 SEQCRD A M MSE MSE 148 136 H H 4 SEQCRD A Y TYR TYR 149 137 H H 4 SEQCRD A Q GLN GLN 150 138 H H 4 SEQCRD A K LYS LYS 151 139 H H 4 SEQCRD A Y TYR TYR 152 140 H H 4 SEQCRD A A ALA ALA 153 141 H H 4 SEQCRD A E GLU GLU 154 142 H H 4 SEQCRD A N ASN ASN 155 143 H H 4 SEQCRD A Q GLN GLN 156 144 H H 4 SEQCRD A G GLY GLY 157 145 H C 45 SEQCRD A W TRP TRP 158 146 C C 4 SEQCRD A K LYS LYS 159 147 E E 4 SEQCRD A F PHE PHE 160 148 E E 4 SEQCRD A E GLU GLU 161 149 E E 4 SEQCRD A V VAL VAL 162 150 E E 4 SEQCRD A M MSE MSE 163 151 E E 4 SEQCRD A E GLU GLU 164 152 E E 4 SEQCRD A A ALA ALA 165 153 E E 4 SEQCRD A S SER SER 166 154 E E 4 SEQCRD A A ALA ALA 167 155 E E 4 SEQCRD A N ASN ASN 168 156 C T 45 SEQCRD A G GLY GLY 169 157 C T 45 SEQCRD A V VAL VAL 170 158 C T 45 SEQCRD A G GLY GLY 171 159 C T 45 SEQCRD A G GLY GLY 172 160 C T 45 SEQCRD A L LEU LEU 173 161 E E 4 SEQCRD A K LYS LYS 174 162 E E 4 SEQCRD A E GLU GLU 175 163 E E 4 SEQCRD A V VAL VAL 176 164 E E 4 SEQCRD A V VAL VAL 177 165 E E 4 SEQCRD A A ALA ALA 178 166 E E 4 SEQCRD A M MSE MSE 179 167 E E 4 SEQCRD A V VAL VAL 180 168 E E 4 SEQCRD A S SER SER 181 169 E E 4 SEQCRD A G GLY GLY 182 170 C T 45 SEQCRD A Q GLN GLN 183 171 C T 45 SEQCRD A S SER SER 184 172 H T 45 SEQCRD A V VAL VAL 185 173 H H 4 SEQCRD A Y TYR TYR 186 174 H H 4 SEQCRD A S SER SER 187 175 H H 4 SEQCRD A K LYS LYS 188 176 H H 4 SEQCRD A L LEU LEU 189 177 H H 4 SEQCRD A K LYS LYS 190 178 H H 4 SEQCRD A Y TYR TYR 191 179 H T 45 SEQCRD A E GLU GLU 192 180 H T 45 SEQCRD A S SER SER 193 181 H T 45 SEQCRD A G GLY GLY 194 182 E E 4 SEQCRD A A ALA ALA 195 183 E E 4 SEQCRD A H HIS HIS 196 184 E E 4 SEQCRD A R ARG ARG 197 185 E E 4 SEQCRD A V VAL VAL 198 186 E E 4 SEQCRD A Q GLN GLN 199 187 E E 4 SEQCRD A R ARG ARG 200 188 E E 4 SEQCRD A V VAL VAL 201 189 C C 4 SEQCRD A P PRO PRO 202 190 C T 45 SEQCRD A V VAL VAL 203 191 C T 45 SEQCRD A T THR THR 204 192 C T 45 SEQCRD A E GLU GLU 205 193 C T 45 SEQCRD A S SER SER 206 194 C T 45 SEQCRD A Q GLN GLN 207 195 C T 45 SEQCRD A G GLY GLY 208 196 C T 45 SEQCRD A R ARG ARG 209 197 C C 4 SEQCRD A V VAL VAL 210 198 C C 4 SEQCRD A H HIS HIS 211 199 E E 4 SEQCRD A T THR THR 212 200 E E 4 SEQCRD A S SER SER 213 201 E E 4 SEQCRD A T THR THR 214 202 E E 4 SEQCRD A A ALA ALA 215 203 E E 4 SEQCRD A T THR THR 216 204 E E 4 SEQCRD A V VAL VAL 217 205 E E 4 SEQCRD A L LEU LEU 218 206 E E 4 SEQCRD A V VAL VAL 219 207 E E 4 SEQCRD A M MSE MSE 220 208 E E 4 SEQCRD A P PRO PRO 221 209 E E 4 SEQCRD A E GLU GLU 222 210 C C 4 SEQCRD A V VAL VAL 223 211 C C 4 SEQCRD A E GLU GLU 224 212 H C 45 SEQCRD A E GLU GLU 225 213 H G 45 SEQCRD A V VAL VAL 226 214 H G 45 SEQCRD A E GLU GLU 227 215 H G 45 SEQCRD A Y TYR TYR 228 216 H C 45 SEQCRD A E GLU GLU 229 217 C C 4 SEQCRD A I ILE ILE 230 218 C C 4 SEQCRD A D ASP ASP 231 219 H C 45 SEQCRD A P PRO PRO 232 220 H G 45 SEQCRD A K LYS LYS 233 221 H G 45 SEQCRD A D ASP ASP 234 222 C G 45 SEQCRD A L LEU LEU 235 223 E E 4 SEQCRD A R ARG ARG 236 224 E E 4 SEQCRD A V VAL VAL 237 225 E E 4 SEQCRD A D ASP ASP 238 226 E E 4 SEQCRD A I ILE ILE 239 227 E E 4 SEQCRD A Y TYR TYR 240 228 E E 4 SEQCRD A H HIS HIS 241 229 C C 4 SEQCRD A A ALA ALA 242 230 C C 4 SEQCRD A S SER --- 243 - - - 367 SEQCRD A G GLY --- 244 - - - 367 SEQCRD A A ALA --- 245 - - - 367 SEQCRD A G GLY --- 246 - - - 367 SEQCRD A G GLY --- 247 - - - 367 SEQCRD A Q GLN --- 248 - - - 367 SEQCRD A N ASN --- 249 - - - 367 SEQCRD A V VAL --- 250 - - - 367 SEQCRD A N ASN --- 251 - - - 367 SEQCRD A K LYS LYS 252 240 C C 4 SEQCRD A V VAL VAL 253 241 C C 4 SEQCRD A A ALA ALA 254 242 C C 4 SEQCRD A T THR THR 255 243 C C 4 SEQCRD A A ALA ALA 256 244 E E 4 SEQCRD A V VAL VAL 257 245 E E 4 SEQCRD A R ARG ARG 258 246 E E 4 SEQCRD A I ILE ILE 259 247 E E 4 SEQCRD A I ILE ILE 260 248 E E 4 SEQCRD A H HIS HIS 261 249 E E 4 SEQCRD A L LEU LEU 262 250 C G 45 SEQCRD A P PRO PRO 263 251 C G 45 SEQCRD A T THR THR 264 252 C G 45 SEQCRD A N ASN ASN 265 253 C C 4 SEQCRD A I ILE ILE 266 254 E E 4 SEQCRD A K LYS LYS 267 255 E E 4 SEQCRD A V VAL VAL 268 256 E E 4 SEQCRD A E GLU GLU 269 257 E E 4 SEQCRD A M MSE MSE 270 258 E E 4 SEQCRD A Q GLN GLN 271 259 C C 4 SEQCRD A E GLU GLU 272 260 C C 4 SEQCRD A E GLU GLU 273 261 C C 4 SEQCRD A R ARG ARG 274 262 C C 4 SEQCRD A T THR THR 275 263 H C 45 SEQCRD A Q GLN GLN 276 264 H H 4 SEQCRD A Q GLN GLN 277 265 H H 4 SEQCRD A K LYS LYS 278 266 H H 4 SEQCRD A N ASN ASN 279 267 H H 4 SEQCRD A R ARG ARG 280 268 H H 4 SEQCRD A D ASP ASP 281 269 H H 4 SEQCRD A K LYS LYS 282 270 H H 4 SEQCRD A A ALA ALA 283 271 H H 4 SEQCRD A M MSE MSE 284 272 H H 4 SEQCRD A K LYS LYS 285 273 H H 4 SEQCRD A I ILE ILE 286 274 H H 4 SEQCRD A I ILE ILE 287 275 H H 4 SEQCRD A R ARG ARG 288 276 H H 4 SEQCRD A A ALA ALA 289 277 H H 4 SEQCRD A R ARG ARG 290 278 H H 4 SEQCRD A V VAL VAL 291 279 H H 4 SEQCRD A A ALA ALA 292 280 H H 4 SEQCRD A D ASP ASP 293 281 H H 4 SEQCRD A H HIS HIS 294 282 H H 4 SEQCRD A F PHE PHE 295 283 H H 4 SEQCRD A A ALA ALA 296 284 H H 4 SEQCRD A Q GLN GLN 297 285 H H 4 SEQCRD A I ILE ILE 298 286 H H 4 SEQCRD A A ALA ALA 299 287 H H 4 SEQCRD A Q GLN GLN 300 288 H H 4 SEQCRD A D ASP ASP 301 289 H H 4 SEQCRD A E GLU GLU 302 290 H H 4 SEQCRD A Q GLN GLN 303 291 H H 4 SEQCRD A D ASP ASP 304 292 C C 4 SEQCRD A A ALA ALA 305 293 C C 4 SEQCRD A E GLU --- 306 - - - 367 SEQCRD A R ARG --- 307 - - - 367 SEQCRD A K LYS --- 308 - - - 367 SEQCRD A S SER --- 309 - - - 367 SEQCRD A T THR THR 310 298 C C 4 SEQCRD A V VAL VAL 311 299 C C 4 SEQCRD A G GLY GLY 312 300 C C 4 SEQCRD A T THR THR 313 301 C C 4 SEQCRD A G GLY GLY 314 302 C C 4 SEQCRD A D ASP ASP 315 303 C T 45 SEQCRD A R ARG ARG 316 304 C T 45 SEQCRD A S SER SER 317 305 C T 45 SEQCRD A E GLU GLU 318 306 C T 45 SEQCRD A R ARG ARG 319 307 E E 4 SEQCRD A I ILE ILE 320 308 E E 4 SEQCRD A R ARG ARG 321 309 E E 4 SEQCRD A T THR THR 322 310 E E 4 SEQCRD A Y TYR TYR 323 311 E E 4 SEQCRD A N ASN ASN 324 312 E E 4 SEQCRD A F PHE PHE 325 313 C G 45 SEQCRD A P PRO PRO 326 314 C G 45 SEQCRD A Q GLN GLN 327 315 C G 45 SEQCRD A N ASN ASN 328 316 C C 4 SEQCRD A R ARG ARG 329 317 E E 4 SEQCRD A V VAL VAL 330 318 E E 4 SEQCRD A T THR THR 331 319 E E 4 SEQCRD A D ASP ASP 332 320 E E 4 SEQCRD A H HIS HIS 333 321 C T 45 SEQCRD A R ARG ARG 334 322 C T 45 SEQCRD A I ILE ILE 335 323 C T 45 SEQCRD A G GLY GLY 336 324 C T 45 SEQCRD A L LEU LEU 337 325 E E 4 SEQCRD A T THR THR 338 326 E E 4 SEQCRD A L LEU LEU 339 327 E E 4 SEQCRD A Q GLN GLN 340 328 C C 4 SEQCRD A K LYS LYS 341 329 H C 45 SEQCRD A L LEU LEU 342 330 H H 4 SEQCRD A D ASP ASP 343 331 H H 4 SEQCRD A S SER SER 344 332 H H 4 SEQCRD A I ILE ILE 345 333 H H 4 SEQCRD A L LEU LEU 346 334 H H 4 SEQCRD A S SER SER 347 335 H H 4 SEQCRD A G GLY GLY 348 336 C T 45 SEQCRD A K LYS LYS 349 337 C T 45 SEQCRD A L LEU LEU 350 338 H H 4 SEQCRD A D ASP ASP 351 339 H H 4 SEQCRD A E GLU GLU 352 340 H H 4 SEQCRD A V VAL VAL 353 341 H H 4 SEQCRD A I ILE ILE 354 342 H H 4 SEQCRD A D ASP ASP 355 343 H H 4 SEQCRD A A ALA ALA 356 344 H H 4 SEQCRD A L LEU LEU 357 345 H H 4 SEQCRD A I ILE ILE 358 346 H H 4 SEQCRD A L LEU LEU 359 347 H H 4 SEQCRD A Y TYR TYR 360 348 H H 4 SEQCRD A D ASP ASP 361 349 H H 4 SEQCRD A Q GLN GLN 362 350 H H 4 SEQCRD A T THR THR 363 351 H H 4 SEQCRD A Q GLN GLN 364 352 H H 4 SEQCRD A K LYS LYS 365 353 H H 4 SEQCRD A L LEU LEU 366 354 H H 4 SEQCRD A E GLU GLU 367 355 H H 4 SEQCRD A E GLU GLU 368 356 H H 4 SEQCRD A L LEU LEU 369 357 H H 4 SEQCRD A N ASN ASN 370 358 C C 4 SEQCRD A K LYS --- 371 - - - 367 COMMNT S2CERR 1 0 No standard amino acid code S2CERR 2 0 SEQRES and ATOM residue names differ S2CERR 3 51 No ATOM record S2CERR 4 320 SEQRES and ATOM residue numbers differ S2CERR 5 59 PDB and STRIDE secondary structures differ S2CERR 6 51 PDB secondary structure is absent S2CERR 7 51 STRIDE secondary structure is absent COMMNT COMMNT Crystallographic technical parameters: PARAME method 'X-RAY DIFFRACTION' PARAME resolution 2.340 PARAME R-factor 0.22326 PARAME B-factor 51.292 COMMNT COMMNT Reference database information: DATABA source: DATABA SWS: RF1_STRMU (Q8DU64) COMMNT DATABA mutation: DATABA MSE A 78 --> MET 66 'MODIFIED RESIDUE' DATABA MSE A 1 --> ? ? 'LEADER SEQUENCE' DATABA HIS A 9 --> ? ? 'LEADER SEQUENCE' DATABA MSE A 148 --> MET 136 'MODIFIED RESIDUE' DATABA MSE A 46 --> MET 34 'MODIFIED RESIDUE' DATABA LYS A 5 --> ? ? 'LEADER SEQUENCE' DATABA MSE A 91 --> MET 79 'MODIFIED RESIDUE' DATABA HIS A 10 --> ? ? 'LEADER SEQUENCE' DATABA HIS A 7 --> ? ? 'LEADER SEQUENCE' DATABA MSE A 13 --> MET 1 'MODIFIED RESIDUE' DATABA MSE A 284 --> MET 272 'MODIFIED RESIDUE' DATABA GLY A 2 --> ? ? 'LEADER SEQUENCE' DATABA HIS A 8 --> ? ? 'LEADER SEQUENCE' DATABA SER A 3 --> ? ? 'LEADER SEQUENCE' DATABA ASP A 4 --> ? ? 'LEADER SEQUENCE' DATABA MSE A 270 --> MET 258 'MODIFIED RESIDUE' DATABA MSE A 163 --> MET 151 'MODIFIED RESIDUE' DATABA ILE A 6 --> ? ? 'LEADER SEQUENCE' DATABA HIS A 12 --> ? ? 'LEADER SEQUENCE' DATABA MSE A 179 --> MET 167 'MODIFIED RESIDUE' DATABA MSE A 220 --> MET 208 'MODIFIED RESIDUE' DATABA HIS A 11 --> ? ? 'LEADER SEQUENCE'