HEADER LIPID BINDING PROTEIN 05-MAY-26 13GJ TITLE IST1 BOUND TO PI(4,5)P2 CONTAINING MEMBRANE COMPND MOL_ID: 1; COMPND 2 MOLECULE: IST1 HOMOLOG; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 OTHER_DETAILS: RESIDUES 1-2 AND 186-364 ARE UNSTRUCTURED SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: IST1; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI 'BL21-GOLD(DE3)PLYSS AG'; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 866768 KEYWDS ESCRT, ESCRT-III, PIP2, PI(4, 5)P2, ENDOSOMAL, CYTOKINESIS, LIPID KEYWDS 2 BINDING PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR A.ALIAN,F.R.MOSS III,N.TALLEDGE,J.MCCULLOUGH,A.FROST,W.I.SUNDQUIST REVDAT 1 08-JUL-26 13GJ 0 JRNL AUTH A.ALIAN,J.MCCULLOUGH,F.R.MOSS III,N.TALLEDGE,A.MOHAMMED, JRNL AUTH 2 C.GERSTNER,J.DALLUGE,E.PAINE,O.DAVULCU,C.L.CHANG,A.FROST, JRNL AUTH 3 W.I.SUNDQUIST JRNL TITL PHOSPHATIDYLINOSITOL DIPHOSPHATE BINDING BY ESCRT-III JRNL TITL 2 FILAMENTS JRNL REF PROC.NATL.ACAD.SCI.USA 2026 JRNL REFN ESSN 1091-6490 JRNL DOI 10.1073/PNAS.2616668123 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, SERIALEM, EPU, UCSF CHIMERA, REMARK 3 CRYOSPARC, PHENIX REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : 3FRR REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : FLEXIBLE FIT REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 68.600 REMARK 3 REMARK 3 FITTING PROCEDURE : NULL REMARK 3 REMARK 3 EM IMAGE RECONSTRUCTION STATISTICS REMARK 3 NOMINAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 ACTUAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 EFFECTIVE RESOLUTION (ANGSTROMS) : 2.000 REMARK 3 NUMBER OF PARTICLES : 652823 REMARK 3 CTF CORRECTION METHOD : NONE REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 13GJ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-MAY-26. REMARK 100 THE DEPOSITION ID IS D_1000307791. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : HELICAL REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : HELICAL ARRAY REMARK 245 PARTICLE TYPE : HELICAL REMARK 245 NAME OF SAMPLE : REGULATOR OF VPS4 ACTIVITY IN REMARK 245 THE MVB PATHWAY (IST1) REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : NULL REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 8.00 REMARK 245 SAMPLE DETAILS : REGULATOR OF VPS4 ACTIVITY IN REMARK 245 THE MVB PATHWAY. REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 15877 REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : TFS KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 BIOCONTINUUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 400.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1300.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : NULL REMARK 245 IMAGING MODE : OTHER REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 4500.00 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : 165000 REMARK 245 CALIBRATED MAGNIFICATION : NULL REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 300 REMARK 245 IMAGING DETAILS : NULL REMARK 247 REMARK 247 ELECTRON MICROSCOPY REMARK 247 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM ELECTRON REMARK 247 MICROSCOPY DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE REMARK 247 THAT CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES REMARK 247 ON THESE RECORDS ARE MEANINGLESS EXCEPT FOR THE CALCULATION REMARK 247 OF THE STRUCTURE FACTORS. REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: 41-MERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 -0.970296 -0.241922 0.000000 338.94714 REMARK 350 BIOMT2 1 0.241922 -0.970296 0.000000 264.81453 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 -73.40000 REMARK 350 BIOMT1 2 0.850811 -0.525472 0.000000 103.36879 REMARK 350 BIOMT2 2 0.525472 0.850811 0.000000 -57.65254 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 -69.73000 REMARK 350 BIOMT1 3 -0.218143 0.975917 0.000000 37.11297 REMARK 350 BIOMT2 3 -0.975917 -0.218143 0.000000 336.16510 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 -66.06000 REMARK 350 BIOMT1 4 -0.546102 -0.837719 0.000000 365.23948 REMARK 350 BIOMT2 4 0.837719 -0.546102 0.000000 108.53565 REMARK 350 BIOMT3 4 0.000000 0.000000 1.000000 -62.39000 REMARK 350 BIOMT1 5 0.980955 0.194234 0.000000 -26.84184 REMARK 350 BIOMT2 5 -0.194234 0.980955 0.000000 32.67779 REMARK 350 BIOMT3 5 0.000000 0.000000 1.000000 -58.72000 REMARK 350 BIOMT1 6 -0.824126 0.566406 0.000000 192.70282 REMARK 350 BIOMT2 6 -0.566406 -0.824126 0.000000 366.26782 REMARK 350 BIOMT3 6 0.000000 0.000000 1.000000 -55.05000 REMARK 350 BIOMT1 7 0.170209 -0.985408 0.000000 278.11744 REMARK 350 BIOMT2 7 0.985408 0.170209 0.000000 -23.84308 REMARK 350 BIOMT3 7 0.000000 0.000000 1.000000 -51.38000 REMARK 350 BIOMT1 8 0.586372 0.810042 0.000000 -60.73697 REMARK 350 BIOMT2 8 -0.810042 0.586372 0.000000 187.48572 REMARK 350 BIOMT3 8 0.000000 0.000000 1.000000 -47.71000 REMARK 350 BIOMT1 9 -0.989272 -0.146083 0.000000 327.17061 REMARK 350 BIOMT2 9 0.146083 -0.989272 0.000000 282.40610 REMARK 350 BIOMT3 9 0.000000 0.000000 1.000000 -44.04000 REMARK 350 BIOMT1 10 0.795473 -0.605988 0.000000 124.18386 REMARK 350 BIOMT2 10 0.605988 0.795473 0.000000 -61.51038 REMARK 350 BIOMT3 10 0.000000 0.000000 1.000000 -40.37000 REMARK 350 BIOMT1 11 -0.121869 0.992546 0.000000 19.81438 REMARK 350 BIOMT2 11 -0.992546 -0.121869 0.000000 323.96229 REMARK 350 BIOMT3 11 0.000000 0.000000 1.000000 -36.70000 REMARK 350 BIOMT1 12 -0.625243 -0.780430 0.000000 368.58761 REMARK 350 BIOMT2 12 0.780430 -0.625243 0.000000 129.43876 REMARK 350 BIOMT3 12 0.000000 0.000000 1.000000 -33.03000 REMARK 350 BIOMT1 13 0.995227 0.097583 0.000000 -14.22002 REMARK 350 BIOMT2 13 -0.097583 0.995227 0.000000 15.68250 REMARK 350 BIOMT3 13 0.000000 0.000000 1.000000 -29.36000 REMARK 350 BIOMT1 14 -0.764921 0.644124 0.000000 171.72415 REMARK 350 BIOMT2 14 -0.644124 -0.764921 0.000000 369.10425 REMARK 350 BIOMT3 14 0.000000 0.000000 1.000000 -25.69000 REMARK 350 BIOMT1 15 0.073238 -0.997314 0.000000 294.79928 REMARK 350 BIOMT2 15 0.997314 0.073238 0.000000 -10.80980 REMARK 350 BIOMT3 15 0.000000 0.000000 1.000000 -22.02000 REMARK 350 BIOMT1 16 0.662620 0.748956 0.000000 -63.05999 REMARK 350 BIOMT2 16 -0.748956 0.662620 0.000000 166.44401 REMARK 350 BIOMT3 16 0.000000 0.000000 1.000000 -18.35000 REMARK 350 BIOMT1 17 -0.998806 -0.048850 0.000000 313.73365 REMARK 350 BIOMT2 17 0.048850 -0.998806 0.000000 298.76452 REMARK 350 BIOMT3 17 0.000000 0.000000 1.000000 -14.68000 REMARK 350 BIOMT1 18 0.732543 -0.680721 0.000000 145.27604 REMARK 350 BIOMT2 18 0.680721 0.732543 0.000000 -63.31862 REMARK 350 BIOMT3 18 0.000000 0.000000 1.000000 -11.01000 REMARK 350 BIOMT1 19 -0.024432 0.999701 0.000000 3.78914 REMARK 350 BIOMT2 19 -0.999701 -0.024432 0.000000 310.12967 REMARK 350 BIOMT3 19 0.000000 0.000000 1.000000 -7.34000 REMARK 350 BIOMT1 20 -0.698415 -0.715693 0.000000 369.87998 REMARK 350 BIOMT2 20 0.715693 -0.698415 0.000000 150.56882 REMARK 350 BIOMT3 20 0.000000 0.000000 1.000000 -3.67000 REMARK 350 BIOMT1 21 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 21 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 21 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 22 -0.698415 0.715693 0.000000 150.56882 REMARK 350 BIOMT2 22 -0.715693 -0.698415 0.000000 369.87998 REMARK 350 BIOMT3 22 0.000000 0.000000 1.000000 3.67000 REMARK 350 BIOMT1 23 -0.024432 -0.999701 0.000000 310.12967 REMARK 350 BIOMT2 23 0.999701 -0.024432 0.000000 3.78914 REMARK 350 BIOMT3 23 0.000000 0.000000 1.000000 7.34000 REMARK 350 BIOMT1 24 0.732543 0.680721 0.000000 -63.31862 REMARK 350 BIOMT2 24 -0.680721 0.732543 0.000000 145.27604 REMARK 350 BIOMT3 24 0.000000 0.000000 1.000000 11.01000 REMARK 350 BIOMT1 25 -0.998806 0.048850 0.000000 298.76452 REMARK 350 BIOMT2 25 -0.048850 -0.998806 0.000000 313.73365 REMARK 350 BIOMT3 25 0.000000 0.000000 1.000000 14.68000 REMARK 350 BIOMT1 26 0.662620 -0.748956 0.000000 166.44401 REMARK 350 BIOMT2 26 0.748956 0.662620 0.000000 -63.05999 REMARK 350 BIOMT3 26 0.000000 0.000000 1.000000 18.35000 REMARK 350 BIOMT1 27 0.073238 0.997314 0.000000 -10.80980 REMARK 350 BIOMT2 27 -0.997314 0.073238 0.000000 294.79928 REMARK 350 BIOMT3 27 0.000000 0.000000 1.000000 22.02000 REMARK 350 BIOMT1 28 -0.764921 -0.644124 0.000000 369.10425 REMARK 350 BIOMT2 28 0.644124 -0.764921 0.000000 171.72415 REMARK 350 BIOMT3 28 0.000000 0.000000 1.000000 25.69000 REMARK 350 BIOMT1 29 0.995227 -0.097583 0.000000 15.68250 REMARK 350 BIOMT2 29 0.097583 0.995227 0.000000 -14.22002 REMARK 350 BIOMT3 29 0.000000 0.000000 1.000000 29.36000 REMARK 350 BIOMT1 30 -0.625243 0.780430 0.000000 129.43876 REMARK 350 BIOMT2 30 -0.780430 -0.625243 0.000000 368.58761 REMARK 350 BIOMT3 30 0.000000 0.000000 1.000000 33.03000 REMARK 350 BIOMT1 31 -0.121869 -0.992546 0.000000 323.96229 REMARK 350 BIOMT2 31 0.992546 -0.121869 0.000000 19.81438 REMARK 350 BIOMT3 31 0.000000 0.000000 1.000000 36.70000 REMARK 350 BIOMT1 32 0.795473 0.605988 0.000000 -61.51038 REMARK 350 BIOMT2 32 -0.605988 0.795473 0.000000 124.18386 REMARK 350 BIOMT3 32 0.000000 0.000000 1.000000 40.37000 REMARK 350 BIOMT1 33 -0.989272 0.146083 0.000000 282.40610 REMARK 350 BIOMT2 33 -0.146083 -0.989272 0.000000 327.17061 REMARK 350 BIOMT3 33 0.000000 0.000000 1.000000 44.04000 REMARK 350 BIOMT1 34 0.586372 -0.810042 0.000000 187.48572 REMARK 350 BIOMT2 34 0.810042 0.586372 0.000000 -60.73697 REMARK 350 BIOMT3 34 0.000000 0.000000 1.000000 47.71000 REMARK 350 BIOMT1 35 0.170209 0.985408 0.000000 -23.84308 REMARK 350 BIOMT2 35 -0.985408 0.170209 0.000000 278.11744 REMARK 350 BIOMT3 35 0.000000 0.000000 1.000000 51.38000 REMARK 350 BIOMT1 36 -0.824126 -0.566406 0.000000 366.26782 REMARK 350 BIOMT2 36 0.566406 -0.824126 0.000000 192.70282 REMARK 350 BIOMT3 36 0.000000 0.000000 1.000000 55.05000 REMARK 350 BIOMT1 37 0.980955 -0.194234 0.000000 32.67779 REMARK 350 BIOMT2 37 0.194234 0.980955 0.000000 -26.84184 REMARK 350 BIOMT3 37 0.000000 0.000000 1.000000 58.72000 REMARK 350 BIOMT1 38 -0.546102 0.837719 0.000000 108.53565 REMARK 350 BIOMT2 38 -0.837719 -0.546102 0.000000 365.23948 REMARK 350 BIOMT3 38 0.000000 0.000000 1.000000 62.39000 REMARK 350 BIOMT1 39 -0.218143 -0.975917 0.000000 336.16510 REMARK 350 BIOMT2 39 0.975917 -0.218143 0.000000 37.11297 REMARK 350 BIOMT3 39 0.000000 0.000000 1.000000 66.06000 REMARK 350 BIOMT1 40 0.850811 0.525472 0.000000 -57.65254 REMARK 350 BIOMT2 40 -0.525472 0.850811 0.000000 103.36879 REMARK 350 BIOMT3 40 0.000000 0.000000 1.000000 69.73000 REMARK 350 BIOMT1 41 -0.970296 0.241922 0.000000 264.81453 REMARK 350 BIOMT2 41 -0.241922 -0.970296 0.000000 338.94714 REMARK 350 BIOMT3 41 0.000000 0.000000 1.000000 73.40000 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A 1 REMARK 465 LEU A 2 REMARK 465 GLU A 186 REMARK 465 ALA A 187 REMARK 465 PRO A 188 REMARK 465 PRO A 189 REMARK 465 GLY A 190 REMARK 465 VAL A 191 REMARK 465 GLU A 192 REMARK 465 THR A 193 REMARK 465 ASP A 194 REMARK 465 LEU A 195 REMARK 465 ILE A 196 REMARK 465 ASP A 197 REMARK 465 VAL A 198 REMARK 465 GLY A 199 REMARK 465 PHE A 200 REMARK 465 THR A 201 REMARK 465 ASP A 202 REMARK 465 ASP A 203 REMARK 465 VAL A 204 REMARK 465 LYS A 205 REMARK 465 LYS A 206 REMARK 465 GLY A 207 REMARK 465 GLY A 208 REMARK 465 PRO A 209 REMARK 465 GLY A 210 REMARK 465 ARG A 211 REMARK 465 GLY A 212 REMARK 465 GLY A 213 REMARK 465 SER A 214 REMARK 465 GLY A 215 REMARK 465 GLY A 216 REMARK 465 PHE A 217 REMARK 465 THR A 218 REMARK 465 ALA A 219 REMARK 465 PRO A 220 REMARK 465 VAL A 221 REMARK 465 GLY A 222 REMARK 465 GLY A 223 REMARK 465 PRO A 224 REMARK 465 ASP A 225 REMARK 465 GLY A 226 REMARK 465 THR A 227 REMARK 465 VAL A 228 REMARK 465 PRO A 229 REMARK 465 MET A 230 REMARK 465 PRO A 231 REMARK 465 MET A 232 REMARK 465 PRO A 233 REMARK 465 MET A 234 REMARK 465 PRO A 235 REMARK 465 MET A 236 REMARK 465 PRO A 237 REMARK 465 SER A 238 REMARK 465 ALA A 239 REMARK 465 ASN A 240 REMARK 465 THR A 241 REMARK 465 PRO A 242 REMARK 465 PHE A 243 REMARK 465 SER A 244 REMARK 465 TYR A 245 REMARK 465 PRO A 246 REMARK 465 LEU A 247 REMARK 465 PRO A 248 REMARK 465 LYS A 249 REMARK 465 GLY A 250 REMARK 465 PRO A 251 REMARK 465 SER A 252 REMARK 465 ASP A 253 REMARK 465 PHE A 254 REMARK 465 ASN A 255 REMARK 465 GLY A 256 REMARK 465 LEU A 257 REMARK 465 PRO A 258 REMARK 465 MET A 259 REMARK 465 GLY A 260 REMARK 465 THR A 261 REMARK 465 TYR A 262 REMARK 465 GLN A 263 REMARK 465 ALA A 264 REMARK 465 PHE A 265 REMARK 465 PRO A 266 REMARK 465 ASN A 267 REMARK 465 ILE A 268 REMARK 465 HIS A 269 REMARK 465 PRO A 270 REMARK 465 PRO A 271 REMARK 465 GLN A 272 REMARK 465 ILE A 273 REMARK 465 PRO A 274 REMARK 465 ALA A 275 REMARK 465 THR A 276 REMARK 465 PRO A 277 REMARK 465 PRO A 278 REMARK 465 SER A 279 REMARK 465 TYR A 280 REMARK 465 GLU A 281 REMARK 465 SER A 282 REMARK 465 VAL A 283 REMARK 465 ASP A 284 REMARK 465 ASP A 285 REMARK 465 ILE A 286 REMARK 465 ASN A 287 REMARK 465 ALA A 288 REMARK 465 ASP A 289 REMARK 465 LYS A 290 REMARK 465 ASN A 291 REMARK 465 ILE A 292 REMARK 465 SER A 293 REMARK 465 SER A 294 REMARK 465 ALA A 295 REMARK 465 GLN A 296 REMARK 465 ILE A 297 REMARK 465 VAL A 298 REMARK 465 GLY A 299 REMARK 465 PRO A 300 REMARK 465 GLY A 301 REMARK 465 PRO A 302 REMARK 465 LYS A 303 REMARK 465 PRO A 304 REMARK 465 GLU A 305 REMARK 465 ALA A 306 REMARK 465 SER A 307 REMARK 465 ALA A 308 REMARK 465 LYS A 309 REMARK 465 LEU A 310 REMARK 465 PRO A 311 REMARK 465 SER A 312 REMARK 465 ARG A 313 REMARK 465 PRO A 314 REMARK 465 ALA A 315 REMARK 465 ASP A 316 REMARK 465 ASN A 317 REMARK 465 TYR A 318 REMARK 465 ASP A 319 REMARK 465 ASN A 320 REMARK 465 PHE A 321 REMARK 465 VAL A 322 REMARK 465 LEU A 323 REMARK 465 PRO A 324 REMARK 465 GLU A 325 REMARK 465 LEU A 326 REMARK 465 PRO A 327 REMARK 465 SER A 328 REMARK 465 VAL A 329 REMARK 465 PRO A 330 REMARK 465 ASP A 331 REMARK 465 THR A 332 REMARK 465 LEU A 333 REMARK 465 PRO A 334 REMARK 465 THR A 335 REMARK 465 ALA A 336 REMARK 465 SER A 337 REMARK 465 ALA A 338 REMARK 465 GLY A 339 REMARK 465 ALA A 340 REMARK 465 SER A 341 REMARK 465 THR A 342 REMARK 465 SER A 343 REMARK 465 ALA A 344 REMARK 465 SER A 345 REMARK 465 GLU A 346 REMARK 465 ASP A 347 REMARK 465 ILE A 348 REMARK 465 ASP A 349 REMARK 465 PHE A 350 REMARK 465 ASP A 351 REMARK 465 ASP A 352 REMARK 465 LEU A 353 REMARK 465 SER A 354 REMARK 465 ARG A 355 REMARK 465 ARG A 356 REMARK 465 PHE A 357 REMARK 465 GLU A 358 REMARK 465 GLU A 359 REMARK 465 LEU A 360 REMARK 465 LYS A 361 REMARK 465 LYS A 362 REMARK 465 LYS A 363 REMARK 465 THR A 364 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 SER A 129 146.75 87.32 REMARK 500 TYR A 177 142.82 -171.48 REMARK 500 REMARK 500 REMARK: NULL REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 PIO A 401 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 13GH RELATED DB: PDB REMARK 900 RELATED ID: 13GM RELATED DB: PDB REMARK 900 RELATED ID: EMD-77058 RELATED DB: EMDB REMARK 900 IST1 BOUND TO PI(4,5)P2 CONTAINING MEMBRANE DBREF 13GJ A 1 364 UNP P53990 IST1_HUMAN 1 364 SEQRES 1 A 364 MET LEU GLY SER GLY PHE LYS ALA GLU ARG LEU ARG VAL SEQRES 2 A 364 ASN LEU ARG LEU VAL ILE ASN ARG LEU LYS LEU LEU GLU SEQRES 3 A 364 LYS LYS LYS THR GLU LEU ALA GLN LYS ALA ARG LYS GLU SEQRES 4 A 364 ILE ALA ASP TYR LEU ALA ALA GLY LYS ASP GLU ARG ALA SEQRES 5 A 364 ARG ILE ARG VAL GLU HIS ILE ILE ARG GLU ASP TYR LEU SEQRES 6 A 364 VAL GLU ALA MET GLU ILE LEU GLU LEU TYR CYS ASP LEU SEQRES 7 A 364 LEU LEU ALA ARG PHE GLY LEU ILE GLN SER MET LYS GLU SEQRES 8 A 364 LEU ASP SER GLY LEU ALA GLU SER VAL SER THR LEU ILE SEQRES 9 A 364 TRP ALA ALA PRO ARG LEU GLN SER GLU VAL ALA GLU LEU SEQRES 10 A 364 LYS ILE VAL ALA ASP GLN LEU CYS ALA LYS TYR SER LYS SEQRES 11 A 364 GLU TYR GLY LYS LEU CYS ARG THR ASN GLN ILE GLY THR SEQRES 12 A 364 VAL ASN ASP ARG LEU MET HIS LYS LEU SER VAL GLU ALA SEQRES 13 A 364 PRO PRO LYS ILE LEU VAL GLU ARG TYR LEU ILE GLU ILE SEQRES 14 A 364 ALA LYS ASN TYR ASN VAL PRO TYR GLU PRO ASP SER VAL SEQRES 15 A 364 VAL MET ALA GLU ALA PRO PRO GLY VAL GLU THR ASP LEU SEQRES 16 A 364 ILE ASP VAL GLY PHE THR ASP ASP VAL LYS LYS GLY GLY SEQRES 17 A 364 PRO GLY ARG GLY GLY SER GLY GLY PHE THR ALA PRO VAL SEQRES 18 A 364 GLY GLY PRO ASP GLY THR VAL PRO MET PRO MET PRO MET SEQRES 19 A 364 PRO MET PRO SER ALA ASN THR PRO PHE SER TYR PRO LEU SEQRES 20 A 364 PRO LYS GLY PRO SER ASP PHE ASN GLY LEU PRO MET GLY SEQRES 21 A 364 THR TYR GLN ALA PHE PRO ASN ILE HIS PRO PRO GLN ILE SEQRES 22 A 364 PRO ALA THR PRO PRO SER TYR GLU SER VAL ASP ASP ILE SEQRES 23 A 364 ASN ALA ASP LYS ASN ILE SER SER ALA GLN ILE VAL GLY SEQRES 24 A 364 PRO GLY PRO LYS PRO GLU ALA SER ALA LYS LEU PRO SER SEQRES 25 A 364 ARG PRO ALA ASP ASN TYR ASP ASN PHE VAL LEU PRO GLU SEQRES 26 A 364 LEU PRO SER VAL PRO ASP THR LEU PRO THR ALA SER ALA SEQRES 27 A 364 GLY ALA SER THR SER ALA SER GLU ASP ILE ASP PHE ASP SEQRES 28 A 364 ASP LEU SER ARG ARG PHE GLU GLU LEU LYS LYS LYS THR HET PIO A 401 53 HETNAM PIO [(2R)-2-OCTANOYLOXY-3-[OXIDANYL-[(1R,2R,3S,4R,5R,6S)-2, HETNAM 2 PIO 3,6-TRIS(OXIDANYL)-4,5-DIPHOSPHONOOXY-CYCLOHEXYL]OXY- HETNAM 3 PIO PHOSPHORYL]OXY-PROPYL] OCTANOATE HETSYN PIO DIOCTANOYL L-ALPHA-PHOSPHATIDYL-D-MYO-INOSITOL 4,5- HETSYN 2 PIO DIPHOSPHATE FORMUL 2 PIO C25 H49 O19 P3 FORMUL 3 HOH *82(H2 O) HELIX 1 AA1 LYS A 7 ALA A 46 1 40 HELIX 2 AA2 LYS A 48 ARG A 82 1 35 HELIX 3 AA3 ARG A 82 MET A 89 1 8 HELIX 4 AA4 ASP A 93 GLN A 111 1 19 HELIX 5 AA5 VAL A 114 SER A 129 1 16 HELIX 6 AA6 SER A 129 THR A 138 1 10 HELIX 7 AA7 ASN A 145 LEU A 152 1 8 HELIX 8 AA8 PRO A 158 ASN A 174 1 17 HELIX 9 AA9 ASP A 180 ALA A 185 1 6 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 CONECT 2973 2974 2976 2986 3008 CONECT 2974 2973 2975 CONECT 2975 2974 2988 2989 2990 CONECT 2976 2973 2977 2978 3009 CONECT 2977 2976 3023 CONECT 2978 2976 2979 2980 3010 CONECT 2979 2978 3024 CONECT 2980 2978 2981 2983 3011 CONECT 2981 2980 2982 CONECT 2982 2981 3002 3003 3004 CONECT 2983 2980 2984 2986 3012 CONECT 2984 2983 2985 CONECT 2985 2984 3005 3006 3007 CONECT 2986 2973 2983 2987 3013 CONECT 2987 2986 3025 CONECT 2988 2975 CONECT 2989 2975 CONECT 2990 2975 2995 CONECT 2991 2992 2996 2999 CONECT 2992 2991 CONECT 2993 2994 2997 3001 CONECT 2994 2993 CONECT 2995 2990 2998 3014 3015 CONECT 2996 2991 3018 3019 CONECT 2997 2993 3020 3021 CONECT 2998 2995 2999 3000 3022 CONECT 2999 2991 2998 CONECT 3000 2998 3001 3016 3017 CONECT 3001 2993 3000 CONECT 3002 2982 CONECT 3003 2982 CONECT 3004 2982 CONECT 3005 2985 CONECT 3006 2985 CONECT 3007 2985 CONECT 3008 2973 CONECT 3009 2976 CONECT 3010 2978 CONECT 3011 2980 CONECT 3012 2983 CONECT 3013 2986 CONECT 3014 2995 CONECT 3015 2995 CONECT 3016 3000 CONECT 3017 3000 CONECT 3018 2996 CONECT 3019 2996 CONECT 3020 2997 CONECT 3021 2997 CONECT 3022 2998 CONECT 3023 2977 CONECT 3024 2979 CONECT 3025 2987 MASTER 436 0 1 9 0 0 0 6 1583 1 53 28 END