HEADER MEMBRANE PROTEIN/IMMUNE SYSTEM 26-APR-25 9UOT TITLE CRYO-EM STRUCTURE OF THE OXYTOCIN RECEPTOR BOUND TO NANOBODY NB2G5 COMPND MOL_ID: 1; COMPND 2 MOLECULE: NANOBODY NB2G5; COMPND 3 CHAIN: B; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: OXYTOCIN RECEPTOR; COMPND 7 CHAIN: A; COMPND 8 SYNONYM: OT-R; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: VICUGNA PACOS; SOURCE 3 ORGANISM_TAXID: 30538; SOURCE 4 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 8 ORGANISM_COMMON: HUMAN; SOURCE 9 ORGANISM_TAXID: 9606; SOURCE 10 GENE: OXTR; SOURCE 11 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 12 EXPRESSION_SYSTEM_TAXID: 7108 KEYWDS GPCR, INACTIVE-STATE, DE NOVO PROTEIN, NANOBODY, MEMBRANE KEYWDS 2 PROTEIN/IMMUNE SYSTEM, MEMBRANE PROTEIN-IMMUNE SYSTEM COMPLEX EXPDTA ELECTRON MICROSCOPY AUTHOR K.GAO,J.NIE,X.ZHANG,X.LIU REVDAT 1 28-OCT-26 9UOT 0 JRNL AUTH J.NIE,K.GAO,X.ZHANG,H.MENG,Q.LI,X.ZHANG,Y.WU,H.ZENG,W.LIU, JRNL AUTH 2 L.LIU,L.TAN,X.SUN,X.LIU,W.ZHANG JRNL TITL DISCOVERY OF AN ANTAGONIST NANOBODY TARGETING THE OXYTOCIN JRNL TITL 2 RECEPTOR WITH TOCOLYTIC EFFECT IN MICE. JRNL REF NAT COMMUN V. 17 2026 JRNL REFN ESSN 2041-1723 JRNL PMID 42864336 JRNL DOI 10.1038/S41467-026-77680-0 REMARK 2 REMARK 2 RESOLUTION. 3.20 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : NULL REMARK 3 REFINEMENT PROTOCOL : NULL REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : NULL 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) : 3.200 REMARK 3 NUMBER OF PARTICLES : 222452 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING ONLY REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 9UOT COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 29-APR-25. REMARK 100 THE DEPOSITION ID IS D_1300058875. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : SINGLE PARTICLE REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : PARTICLE REMARK 245 PARTICLE TYPE : POINT REMARK 245 NAME OF SAMPLE : CRYO-EM STRUCTURE OF THE REMARK 245 OXYTOCIN RECEPTOR BOUND TO REMARK 245 NANOBODY NB2G5 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 : 7.50 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : NULL REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : TFS KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 (6K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1100.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1800.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : NULL REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 5000.00 REMARK 245 ILLUMINATION MODE : SPOT SCAN REMARK 245 NOMINAL MAGNIFICATION : NULL 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 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 ASP A -7 REMARK 465 TYR A -6 REMARK 465 LYS A -5 REMARK 465 ASP A -4 REMARK 465 ASP A -3 REMARK 465 ASP A -2 REMARK 465 ASP A -1 REMARK 465 ALA A 0 REMARK 465 MET A 1 REMARK 465 GLU A 2 REMARK 465 GLY A 3 REMARK 465 ALA A 4 REMARK 465 LEU A 5 REMARK 465 ALA A 6 REMARK 465 ALA A 7 REMARK 465 ASN A 8 REMARK 465 TRP A 9 REMARK 465 SER A 10 REMARK 465 ALA A 11 REMARK 465 GLU A 12 REMARK 465 ALA A 13 REMARK 465 ALA A 14 REMARK 465 ASN A 15 REMARK 465 ALA A 16 REMARK 465 SER A 17 REMARK 465 ALA A 18 REMARK 465 ALA A 19 REMARK 465 PRO A 20 REMARK 465 PRO A 21 REMARK 465 GLY A 22 REMARK 465 ALA A 23 REMARK 465 GLU A 24 REMARK 465 GLY A 25 REMARK 465 ASN A 26 REMARK 465 ARG A 27 REMARK 465 THR A 28 REMARK 465 ALA A 29 REMARK 465 GLY A 30 REMARK 465 PRO A 31 REMARK 465 PRO A 32 REMARK 465 ARG A 33 REMARK 465 ARG A 34 REMARK 465 ASN A 35 REMARK 465 GLU A 36 REMARK 465 ALA A 37 REMARK 465 LEU A 38 REMARK 465 ILE A 141 REMARK 465 CYS A 142 REMARK 465 GLN A 143 REMARK 465 PRO A 144 REMARK 465 LEU A 145 REMARK 465 ARG A 146 REMARK 465 SER A 147 REMARK 465 LEU A 148 REMARK 465 ALA A 1001 REMARK 465 ALA A 1017 REMARK 465 PHE A 1018 REMARK 465 ARG A 1019 REMARK 465 LYS A 1020 REMARK 465 GLU A 1021 REMARK 465 MET A 1022 REMARK 465 SER A 1023 REMARK 465 LEU A 1024 REMARK 465 GLU A 1025 REMARK 465 GLU A 1026 REMARK 465 TYR A 1027 REMARK 465 LYS A 1028 REMARK 465 GLU A 1029 REMARK 465 LEU A 1030 REMARK 465 LEU A 1031 REMARK 465 ASN A 1032 REMARK 465 ALA A 1033 REMARK 465 LEU A 1034 REMARK 465 ALA A 1035 REMARK 465 GLU A 1036 REMARK 465 ARG A 1037 REMARK 465 VAL A 1038 REMARK 465 GLY A 1039 REMARK 465 ALA A 1040 REMARK 465 SER A 1041 REMARK 465 GLU A 1042 REMARK 465 GLU A 1043 REMARK 465 ALA A 1044 REMARK 465 ILE A 1045 REMARK 465 GLU A 1046 REMARK 465 LYS A 1047 REMARK 465 ALA A 1048 REMARK 465 LYS A 1049 REMARK 465 LYS A 1050 REMARK 465 LEU A 1051 REMARK 465 LEU A 1052 REMARK 465 GLU A 1053 REMARK 465 THR A 1054 REMARK 465 TYR A 1055 REMARK 465 GLY A 1056 REMARK 465 ALA A 1057 REMARK 465 LYS A 1058 REMARK 465 LYS A 1059 REMARK 465 THR A 1060 REMARK 465 PRO A 1061 REMARK 465 GLU A 1062 REMARK 465 GLU A 1063 REMARK 465 ILE A 1064 REMARK 465 ASN A 1096 REMARK 465 ASN A 1097 REMARK 465 LEU A 1098 REMARK 465 SER A 1099 REMARK 465 PRO A 1100 REMARK 465 GLU A 1101 REMARK 465 ASP A 1102 REMARK 465 LEU A 1103 REMARK 465 GLU A 1104 REMARK 465 LEU A 1105 REMARK 465 LEU A 1106 REMARK 465 LYS A 1107 REMARK 465 LYS A 1108 REMARK 465 ALA A 1109 REMARK 465 GLY A 1110 REMARK 465 GLU A 1111 REMARK 465 GLU A 1112 REMARK 465 ASP A 1113 REMARK 465 GLU A 1114 REMARK 465 LEU A 1115 REMARK 465 ALA A 1116 REMARK 465 GLY A 1117 REMARK 465 GLU A 1118 REMARK 465 ARG A 272 REMARK 465 MET A 333 REMARK 465 GLY A 334 REMARK 465 HIS A 335 REMARK 465 LEU A 336 REMARK 465 PHE A 337 REMARK 465 HIS A 338 REMARK 465 GLU A 339 REMARK 465 LEU A 340 REMARK 465 VAL A 341 REMARK 465 GLN A 342 REMARK 465 ARG A 343 REMARK 465 PHE A 344 REMARK 465 LEU A 345 REMARK 465 CYS A 346 REMARK 465 CYS A 347 REMARK 465 SER A 348 REMARK 465 ALA A 349 REMARK 465 SER A 350 REMARK 465 TYR A 351 REMARK 465 LEU A 352 REMARK 465 LYS A 353 REMARK 465 GLY A 354 REMARK 465 ARG A 355 REMARK 465 ARG A 356 REMARK 465 LEU A 357 REMARK 465 GLY A 358 REMARK 465 GLU A 359 REMARK 465 THR A 360 REMARK 465 SER A 361 REMARK 465 ALA A 362 REMARK 465 SER A 363 REMARK 465 LYS A 364 REMARK 465 LYS A 365 REMARK 465 SER A 366 REMARK 465 ASN A 367 REMARK 465 SER A 368 REMARK 465 SER A 369 REMARK 465 SER A 370 REMARK 465 PHE A 371 REMARK 465 VAL A 372 REMARK 465 LEU A 373 REMARK 465 SER A 374 REMARK 465 HIS A 375 REMARK 465 ARG A 376 REMARK 465 SER A 377 REMARK 465 SER A 378 REMARK 465 SER A 379 REMARK 465 GLN A 380 REMARK 465 ARG A 381 REMARK 465 SER A 382 REMARK 465 CYS A 383 REMARK 465 SER A 384 REMARK 465 GLN A 385 REMARK 465 PRO A 386 REMARK 465 SER A 387 REMARK 465 THR A 388 REMARK 465 ALA A 389 REMARK 465 HIS A 390 REMARK 465 HIS A 391 REMARK 465 HIS A 392 REMARK 465 HIS A 393 REMARK 465 HIS A 394 REMARK 465 HIS A 395 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 GLN B 5 CG CD OE1 NE2 REMARK 470 GLU B 6 CG CD OE1 OE2 REMARK 470 SER B 17 OG REMARK 470 ILE B 28 CG1 CG2 CD1 REMARK 470 PRO B 30 CG CD REMARK 470 TYR B 32 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 GLN B 39 CG CD OE1 NE2 REMARK 470 PRO B 41 CG CD REMARK 470 LYS B 43 CG CD CE NZ REMARK 470 GLU B 44 CG CD OE1 OE2 REMARK 470 ARG B 45 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 46 CG CD OE1 OE2 REMARK 470 ILE B 51 CG1 CG2 CD1 REMARK 470 ASP B 52 CG OD1 OD2 REMARK 470 THR B 57 OG1 CG2 REMARK 470 TYR B 59 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ASP B 61 CG OD1 OD2 REMARK 470 ARG B 66 CG CD NE CZ NH1 NH2 REMARK 470 ASN B 73 CG OD1 ND2 REMARK 470 LYS B 75 CG CD CE NZ REMARK 470 GLN B 100 CG CD OE1 NE2 REMARK 470 GLN B 114 CG CD OE1 NE2 REMARK 470 GLN B 117 CG CD OE1 NE2 REMARK 470 GLU A 42 CG CD OE1 OE2 REMARK 470 CYS A 47 SG REMARK 470 GLN A 69 CG CD OE1 NE2 REMARK 470 HIS A 71 CG ND1 CD2 CE1 NE2 REMARK 470 ASP A 109 CG OD1 OD2 REMARK 470 ASP A 136 CG OD1 OD2 REMARK 470 ARG A 149 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 150 CG CD NE CZ NH1 NH2 REMARK 470 VAL A 184 CG1 CG2 REMARK 470 ASP A 186 CG OD1 OD2 REMARK 470 ILE A 192 CG1 CG2 CD1 REMARK 470 GLN A 193 CG CD OE1 NE2 REMARK 470 LYS A 198 CG CD CE NZ REMARK 470 LEU A 216 CG CD1 CD2 REMARK 470 CYS A 219 SG REMARK 470 TYR A 220 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LYS A1003 CG CD CE NZ REMARK 470 TRP A1005 CG CD1 CD2 NE1 CE2 CE3 CZ2 REMARK 470 TRP A1005 CZ3 CH2 REMARK 470 LEU A1010 CG CD1 CD2 REMARK 470 LYS A1012 CG CD CE NZ REMARK 470 GLU A1013 CG CD OE1 OE2 REMARK 470 LEU A1014 CG CD1 CD2 REMARK 470 LEU A1065 CG CD1 CD2 REMARK 470 ILE A1066 CG1 CG2 CD1 REMARK 470 ARG A1068 CG CD NE CZ NH1 NH2 REMARK 470 ILE A1069 CG1 CG2 CD1 REMARK 470 SER A1070 OG REMARK 470 CYS A1073 SG REMARK 470 TYR A1074 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ILE A1075 CG1 CG2 CD1 REMARK 470 LEU A1076 CG CD1 CD2 REMARK 470 ASP A1078 CG OD1 OD2 REMARK 470 LYS A1081 CG CD CE NZ REMARK 470 ARG A1082 CG CD NE CZ NH1 NH2 REMARK 470 LEU A1083 CG CD1 CD2 REMARK 470 GLU A1085 CG CD OE1 OE2 REMARK 470 THR A1091 OG1 CG2 REMARK 470 LEU A1092 CG CD1 CD2 REMARK 470 PHE A1094 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LYS A1095 CG CD CE NZ REMARK 470 TYR A1120 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LYS A1121 CG CD CE NZ REMARK 470 GLU A1124 CG CD OE1 OE2 REMARK 470 GLU A1125 CG CD OE1 OE2 REMARK 470 LYS A1128 CG CD CE NZ REMARK 470 GLU A1131 CG CD OE1 OE2 REMARK 470 PHE A 278 CG CD1 CD2 CE1 CE2 CZ REMARK 470 PHE A 292 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LYS A 306 CG CD CE NZ 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 PRO B 30 -115.23 53.29 REMARK 500 GLN B 100 -121.89 61.48 REMARK 500 ALA B 102 -156.31 -150.85 REMARK 500 TYR B 103 60.47 65.45 REMARK 500 TYR B 105 -8.26 75.36 REMARK 500 VAL A 41 -55.94 -124.53 REMARK 500 LYS A 306 5.79 -69.26 REMARK 500 GLU A 307 -118.91 60.49 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-64382 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF THE OXYTOCIN RECEPTOR BOUND TO NANOBODY NB2G5 DBREF 9UOT B 3 117 PDB 9UOT 9UOT 3 117 DBREF 9UOT A 1 223 UNP P30559 OXYR_HUMAN 1 223 DBREF 9UOT A 1001 1134 PDB 9UOT 9UOT 1001 1134 DBREF 9UOT A 272 389 UNP P30559 OXYR_HUMAN 272 389 SEQADV 9UOT ASP A -7 UNP P30559 EXPRESSION TAG SEQADV 9UOT TYR A -6 UNP P30559 EXPRESSION TAG SEQADV 9UOT LYS A -5 UNP P30559 EXPRESSION TAG SEQADV 9UOT ASP A -4 UNP P30559 EXPRESSION TAG SEQADV 9UOT ASP A -3 UNP P30559 EXPRESSION TAG SEQADV 9UOT ASP A -2 UNP P30559 EXPRESSION TAG SEQADV 9UOT ASP A -1 UNP P30559 EXPRESSION TAG SEQADV 9UOT ALA A 0 UNP P30559 EXPRESSION TAG SEQADV 9UOT HIS A 65 UNP P30559 ARG 65 CONFLICT SEQADV 9UOT ALA A 153 UNP P30559 ASP 153 CONFLICT SEQADV 9UOT LYS A 325 UNP P30559 ASN 325 CONFLICT SEQADV 9UOT MET A 333 UNP P30559 THR 333 CONFLICT SEQADV 9UOT HIS A 390 UNP P30559 EXPRESSION TAG SEQADV 9UOT HIS A 391 UNP P30559 EXPRESSION TAG SEQADV 9UOT HIS A 392 UNP P30559 EXPRESSION TAG SEQADV 9UOT HIS A 393 UNP P30559 EXPRESSION TAG SEQADV 9UOT HIS A 394 UNP P30559 EXPRESSION TAG SEQADV 9UOT HIS A 395 UNP P30559 EXPRESSION TAG SEQRES 1 B 97 GLN LEU GLN GLU SER GLY GLY GLY SER LEU ARG LEU SER SEQRES 2 B 97 CYS ALA ALA SER GLY SER ILE SER PRO GLY TYR TRP MET SEQRES 3 B 97 GLY TRP TYR ARG GLN ALA PRO LYS GLU ARG GLU PHE VAL SEQRES 4 B 97 ALA SER ILE ASP LEU GLY GLY THR THR TYR TYR ALA ASP SEQRES 5 B 97 SER ARG PHE THR ILE SER ARG ASP ASN ALA LYS ASN THR SEQRES 6 B 97 VAL TYR LEU GLN MET ASN VAL TYR TYR CYS ALA ALA ARG SEQRES 7 B 97 ILE GLN TYR ALA TYR ASP TYR LEU GLY THR HIS GLY TYR SEQRES 8 B 97 TRP GLY GLN GLY THR GLN SEQRES 1 A 489 ASP TYR LYS ASP ASP ASP ASP ALA MET GLU GLY ALA LEU SEQRES 2 A 489 ALA ALA ASN TRP SER ALA GLU ALA ALA ASN ALA SER ALA SEQRES 3 A 489 ALA PRO PRO GLY ALA GLU GLY ASN ARG THR ALA GLY PRO SEQRES 4 A 489 PRO ARG ARG ASN GLU ALA LEU ALA ARG VAL GLU VAL ALA SEQRES 5 A 489 VAL LEU CYS LEU ILE LEU LEU LEU ALA LEU SER GLY ASN SEQRES 6 A 489 ALA CYS VAL LEU LEU ALA LEU HIS THR THR ARG GLN LYS SEQRES 7 A 489 HIS SER ARG LEU PHE PHE PHE MET LYS HIS LEU SER ILE SEQRES 8 A 489 ALA ASP LEU VAL VAL ALA VAL PHE GLN VAL LEU PRO GLN SEQRES 9 A 489 LEU LEU TRP ASP ILE THR PHE ARG PHE TYR GLY PRO ASP SEQRES 10 A 489 LEU LEU CYS ARG LEU VAL LYS TYR LEU GLN VAL VAL GLY SEQRES 11 A 489 MET PHE ALA SER THR TYR LEU LEU LEU LEU MET SER LEU SEQRES 12 A 489 ASP ARG CYS LEU ALA ILE CYS GLN PRO LEU ARG SER LEU SEQRES 13 A 489 ARG ARG ARG THR ALA ARG LEU ALA VAL LEU ALA THR TRP SEQRES 14 A 489 LEU GLY CYS LEU VAL ALA SER ALA PRO GLN VAL HIS ILE SEQRES 15 A 489 PHE SER LEU ARG GLU VAL ALA ASP GLY VAL PHE ASP CYS SEQRES 16 A 489 TRP ALA VAL PHE ILE GLN PRO TRP GLY PRO LYS ALA TYR SEQRES 17 A 489 ILE THR TRP ILE THR LEU ALA VAL TYR ILE VAL PRO VAL SEQRES 18 A 489 ILE VAL LEU ALA ALA CYS TYR GLY LEU ILE ALA PHE LYS SEQRES 19 A 489 ILE TRP GLN ASN SER ALA LEU GLY LYS GLU LEU ALA ALA SEQRES 20 A 489 ALA PHE ARG LYS GLU MET SER LEU GLU GLU TYR LYS GLU SEQRES 21 A 489 LEU LEU ASN ALA LEU ALA GLU ARG VAL GLY ALA SER GLU SEQRES 22 A 489 GLU ALA ILE GLU LYS ALA LYS LYS LEU LEU GLU THR TYR SEQRES 23 A 489 GLY ALA LYS LYS THR PRO GLU GLU ILE LEU ILE GLY ARG SEQRES 24 A 489 ILE SER ALA ALA CYS TYR ILE LEU ALA ASP GLY ALA LYS SEQRES 25 A 489 ARG LEU GLY GLU PRO VAL ALA ILE LEU THR LEU SER PHE SEQRES 26 A 489 LYS ASN ASN LEU SER PRO GLU ASP LEU GLU LEU LEU LYS SEQRES 27 A 489 LYS ALA GLY GLU GLU ASP GLU LEU ALA GLY GLU ALA TYR SEQRES 28 A 489 LYS GLY LEU GLU GLU GLY SER LYS ALA GLY GLU ALA THR SEQRES 29 A 489 MET ARG THR VAL LYS MET THR PHE ILE ILE VAL LEU ALA SEQRES 30 A 489 PHE ILE VAL CYS TRP THR PRO PHE PHE PHE VAL GLN MET SEQRES 31 A 489 TRP SER VAL TRP ASP ALA ASN ALA PRO LYS GLU ALA SER SEQRES 32 A 489 ALA PHE ILE ILE VAL MET LEU LEU ALA SER LEU ASN SER SEQRES 33 A 489 CYS CYS LYS PRO TRP ILE TYR MET LEU PHE MET GLY HIS SEQRES 34 A 489 LEU PHE HIS GLU LEU VAL GLN ARG PHE LEU CYS CYS SER SEQRES 35 A 489 ALA SER TYR LEU LYS GLY ARG ARG LEU GLY GLU THR SER SEQRES 36 A 489 ALA SER LYS LYS SER ASN SER SER SER PHE VAL LEU SER SEQRES 37 A 489 HIS ARG SER SER SER GLN ARG SER CYS SER GLN PRO SER SEQRES 38 A 489 THR ALA HIS HIS HIS HIS HIS HIS HELIX 1 AA1 VAL A 41 THR A 67 1 27 HELIX 2 AA2 SER A 72 VAL A 90 1 19 HELIX 3 AA3 GLN A 92 PHE A 103 1 12 HELIX 4 AA4 PRO A 108 ALA A 140 1 33 HELIX 5 AA5 ARG A 150 SER A 168 1 19 HELIX 6 AA6 SER A 168 ILE A 174 1 7 HELIX 7 AA7 PRO A 194 VAL A 208 1 15 HELIX 8 AA8 TYR A 209 ILE A 223 1 15 HELIX 9 AA9 LYS A 1003 ALA A 1016 1 14 HELIX 10 AB1 ILE A 1066 ALA A 1077 1 12 HELIX 11 AB2 GLY A 1084 LYS A 1095 1 12 HELIX 12 AB3 TYR A 1120 MET A 1134 1 15 HELIX 13 AB4 VAL A 274 CYS A 287 1 14 HELIX 14 AB5 TRP A 288 ASP A 301 1 14 HELIX 15 AB6 ALA A 310 PHE A 332 1 23 SHEET 1 AA1 4 GLN B 5 GLU B 6 0 SHEET 2 AA1 4 LEU B 20 ALA B 23 -1 O ALA B 23 N GLN B 5 SHEET 3 AA1 4 THR B 77 LEU B 80 -1 O LEU B 80 N LEU B 20 SHEET 4 AA1 4 ILE B 69 ASP B 72 -1 N SER B 70 O TYR B 79 SHEET 1 AA2 2 PHE A 175 ALA A 181 0 SHEET 2 AA2 2 VAL A 184 ALA A 189 -1 O ASP A 186 N ARG A 178 SSBOND 1 CYS B 22 CYS B 95 1555 1555 2.03 SSBOND 2 CYS A 112 CYS A 187 1555 1555 2.03 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 89 513 CONECT 513 89 CONECT 1254 1758 CONECT 1758 1254 MASTER 399 0 0 15 6 0 0 6 2837 2 4 46 END