HEADER MEMBRANE PROTEIN/IMMUNE SYSTEM 04-MAY-25 9UTO TITLE CRYO-EM STRUCTURE OF THE OXYTOCIN RECEPTOR BOUND TO NANOBODY NB2B1 COMPND MOL_ID: 1; COMPND 2 MOLECULE: OXYTOCIN RECEPTOR; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: OT-R; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: NB2B1; COMPND 8 CHAIN: B; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: OXTR; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 8 MOL_ID: 2; SOURCE 9 ORGANISM_SCIENTIFIC: VICUGNA PACOS; SOURCE 10 ORGANISM_TAXID: 30538; SOURCE 11 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 12 EXPRESSION_SYSTEM_TAXID: 9606 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 9UTO 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. 3.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, PHENIX, 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) : 3.000 REMARK 3 NUMBER OF PARTICLES : 181185 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 9UTO COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 08-MAY-25. REMARK 100 THE DEPOSITION ID IS D_1300059089. 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 NB2B1 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 ARG A 146 REMARK 465 SER A 147 REMARK 465 LEU A 148 REMARK 465 ARG A 149 REMARK 465 SER A 224 REMARK 465 PHE A 225 REMARK 465 LYS A 226 REMARK 465 ILE A 227 REMARK 465 TRP A 228 REMARK 465 GLN A 229 REMARK 465 ASN A 230 REMARK 465 LEU A 231 REMARK 465 ARG A 232 REMARK 465 LEU A 233 REMARK 465 LYS A 234 REMARK 465 THR A 235 REMARK 465 ALA A 236 REMARK 465 ALA A 237 REMARK 465 ALA A 238 REMARK 465 ALA A 239 REMARK 465 ALA A 240 REMARK 465 ALA A 241 REMARK 465 GLU A 242 REMARK 465 ALA A 243 REMARK 465 PRO A 244 REMARK 465 GLU A 245 REMARK 465 GLY A 246 REMARK 465 ALA A 247 REMARK 465 ALA A 248 REMARK 465 ALA A 249 REMARK 465 GLY A 250 REMARK 465 ASP A 251 REMARK 465 GLY A 252 REMARK 465 GLY A 253 REMARK 465 ARG A 254 REMARK 465 VAL A 255 REMARK 465 ALA A 256 REMARK 465 LEU A 257 REMARK 465 ALA A 258 REMARK 465 ARG A 259 REMARK 465 VAL A 260 REMARK 465 SER A 261 REMARK 465 SER A 262 REMARK 465 VAL A 263 REMARK 465 LYS A 264 REMARK 465 LEU A 265 REMARK 465 ILE A 266 REMARK 465 SER A 267 REMARK 465 LYS A 268 REMARK 465 ALA A 269 REMARK 465 LYS A 270 REMARK 465 ILE A 271 REMARK 465 TRP A 300 REMARK 465 ASP A 301 REMARK 465 ALA A 302 REMARK 465 ASN A 303 REMARK 465 GLN B 1 REMARK 465 VAL B 2 REMARK 465 GLN B 3 REMARK 465 GLY B 10 REMARK 465 LEU B 11 REMARK 465 VAL B 12 REMARK 465 GLN B 13 REMARK 465 ALA B 14 REMARK 465 GLY B 15 REMARK 465 GLY B 16 REMARK 465 SER B 17 REMARK 465 ALA B 40 REMARK 465 PRO B 41 REMARK 465 GLY B 42 REMARK 465 LYS B 43 REMARK 465 GLU B 44 REMARK 465 ASN B 83 REMARK 465 SER B 84 REMARK 465 LEU B 85 REMARK 465 LYS B 86 REMARK 465 PRO B 87 REMARK 465 GLU B 88 REMARK 465 ASP B 89 REMARK 465 THR B 90 REMARK 465 VAL B 124 REMARK 465 SER B 125 REMARK 465 SER B 126 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 GLU A 36 CG CD OE1 OE2 REMARK 470 LEU A 38 CG CD1 CD2 REMARK 470 ARG A 40 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 70 CG CD CE NZ REMARK 470 HIS A 71 CG ND1 CD2 CE1 NE2 REMARK 470 ARG A 104 CG CD NE CZ NH1 NH2 REMARK 470 CYS A 112 SG REMARK 470 LYS A 116 CG CD CE NZ REMARK 470 CYS A 138 SG REMARK 470 CYS A 142 SG REMARK 470 GLN A 143 CG CD OE1 NE2 REMARK 470 PRO A 144 CG CD REMARK 470 LEU A 145 CG CD1 CD2 REMARK 470 ARG A 150 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 151 CG CD NE CZ NH1 NH2 REMARK 470 LEU A 162 CG CD1 CD2 REMARK 470 GLU A 179 CG CD OE1 OE2 REMARK 470 CYS A 187 SG 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 VAL A 213 CG1 CG2 REMARK 470 THR A 289 OG1 CG2 REMARK 470 PHE A 292 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LYS A 306 CG CD CE NZ REMARK 470 GLU A 307 CG CD OE1 OE2 REMARK 470 TRP A1005 CG CD1 CD2 NE1 CE2 CE3 CZ2 REMARK 470 TRP A1005 CZ3 CH2 REMARK 470 LYS A1012 CG CD CE NZ REMARK 470 GLU A1013 CG CD OE1 OE2 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 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 LEU A1092 CG CD1 CD2 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 LEU B 18 CG CD1 CD2 REMARK 470 ARG B 45 CG CD NE CZ NH1 NH2 REMARK 470 TYR B 53 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ASP B 72 CG OD1 OD2 REMARK 470 ARG B 103 CG CD NE CZ NH1 NH2 REMARK 470 TYR B 114 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 TRP B 116 CG CD1 CD2 NE1 CE2 CE3 CZ2 REMARK 470 TRP B 116 CZ3 CH2 REMARK 470 GLN B 118 CG CD OE1 NE2 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 ARG A 68 19.78 56.11 REMARK 500 LYS A 70 -159.22 -147.91 REMARK 500 ALA A 308 50.22 -91.25 REMARK 500 ILE B 56 43.54 34.53 REMARK 500 SER B 98 7.07 -69.47 REMARK 500 ALA B 99 -150.61 65.06 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-64495 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF THE OXYTOCIN RECEPTOR BOUND TO NANOBODY NB2B1 DBREF 9UTO A 35 332 UNP P30559 OXYR_HUMAN 35 332 DBREF 9UTO B 1 126 PDB 9UTO 9UTO 1 126 SEQADV 9UTO HIS A 65 UNP P30559 ARG 65 CONFLICT SEQADV 9UTO ALA A 153 UNP P30559 ASP 153 CONFLICT SEQADV 9UTO LYS A 325 UNP P30559 ASN 325 CONFLICT SEQADV 9UTO ALA A 1001 UNP P30559 EXPRESSION TAG SEQADV 9UTO PHE A 1002 UNP P30559 EXPRESSION TAG SEQADV 9UTO LYS A 1003 UNP P30559 EXPRESSION TAG SEQADV 9UTO ILE A 1004 UNP P30559 EXPRESSION TAG SEQADV 9UTO TRP A 1005 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLN A 1006 UNP P30559 EXPRESSION TAG SEQADV 9UTO ASN A 1007 UNP P30559 EXPRESSION TAG SEQADV 9UTO SER A 1008 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1009 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1010 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1011 UNP P30559 EXPRESSION TAG SEQADV 9UTO LYS A 1012 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLU A 1013 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1014 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1015 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1016 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1065 UNP P30559 EXPRESSION TAG SEQADV 9UTO ILE A 1066 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1067 UNP P30559 EXPRESSION TAG SEQADV 9UTO ARG A 1068 UNP P30559 EXPRESSION TAG SEQADV 9UTO ILE A 1069 UNP P30559 EXPRESSION TAG SEQADV 9UTO SER A 1070 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1071 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1072 UNP P30559 EXPRESSION TAG SEQADV 9UTO CYS A 1073 UNP P30559 EXPRESSION TAG SEQADV 9UTO TYR A 1074 UNP P30559 EXPRESSION TAG SEQADV 9UTO ILE A 1075 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1076 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1077 UNP P30559 EXPRESSION TAG SEQADV 9UTO ASP A 1078 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1079 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1080 UNP P30559 EXPRESSION TAG SEQADV 9UTO LYS A 1081 UNP P30559 EXPRESSION TAG SEQADV 9UTO ARG A 1082 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1083 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1084 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLU A 1085 UNP P30559 EXPRESSION TAG SEQADV 9UTO PRO A 1086 UNP P30559 EXPRESSION TAG SEQADV 9UTO VAL A 1087 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1088 UNP P30559 EXPRESSION TAG SEQADV 9UTO ILE A 1089 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1090 UNP P30559 EXPRESSION TAG SEQADV 9UTO THR A 1091 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1092 UNP P30559 EXPRESSION TAG SEQADV 9UTO SER A 1093 UNP P30559 EXPRESSION TAG SEQADV 9UTO PHE A 1094 UNP P30559 EXPRESSION TAG SEQADV 9UTO LYS A 1095 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1119 UNP P30559 EXPRESSION TAG SEQADV 9UTO TYR A 1120 UNP P30559 EXPRESSION TAG SEQADV 9UTO LYS A 1121 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1122 UNP P30559 EXPRESSION TAG SEQADV 9UTO LEU A 1123 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLU A 1124 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLU A 1125 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1126 UNP P30559 EXPRESSION TAG SEQADV 9UTO SER A 1127 UNP P30559 EXPRESSION TAG SEQADV 9UTO LYS A 1128 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1129 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLY A 1130 UNP P30559 EXPRESSION TAG SEQADV 9UTO GLU A 1131 UNP P30559 EXPRESSION TAG SEQADV 9UTO ALA A 1132 UNP P30559 EXPRESSION TAG SEQADV 9UTO THR A 1133 UNP P30559 EXPRESSION TAG SEQADV 9UTO MET A 1134 UNP P30559 EXPRESSION TAG SEQRES 1 A 361 ASN GLU ALA LEU ALA ARG VAL GLU VAL ALA VAL LEU CYS SEQRES 2 A 361 LEU ILE LEU LEU LEU ALA LEU SER GLY ASN ALA CYS VAL SEQRES 3 A 361 LEU LEU ALA LEU HIS THR THR ARG GLN LYS HIS SER ARG SEQRES 4 A 361 LEU PHE PHE PHE MET LYS HIS LEU SER ILE ALA ASP LEU SEQRES 5 A 361 VAL VAL ALA VAL PHE GLN VAL LEU PRO GLN LEU LEU TRP SEQRES 6 A 361 ASP ILE THR PHE ARG PHE TYR GLY PRO ASP LEU LEU CYS SEQRES 7 A 361 ARG LEU VAL LYS TYR LEU GLN VAL VAL GLY MET PHE ALA SEQRES 8 A 361 SER THR TYR LEU LEU LEU LEU MET SER LEU ASP ARG CYS SEQRES 9 A 361 LEU ALA ILE CYS GLN PRO LEU ARG SER LEU ARG ARG ARG SEQRES 10 A 361 THR ALA ARG LEU ALA VAL LEU ALA THR TRP LEU GLY CYS SEQRES 11 A 361 LEU VAL ALA SER ALA PRO GLN VAL HIS ILE PHE SER LEU SEQRES 12 A 361 ARG GLU VAL ALA ASP GLY VAL PHE ASP CYS TRP ALA VAL SEQRES 13 A 361 PHE ILE GLN PRO TRP GLY PRO LYS ALA TYR ILE THR TRP SEQRES 14 A 361 ILE THR LEU ALA VAL TYR ILE VAL PRO VAL ILE VAL LEU SEQRES 15 A 361 ALA ALA CYS TYR GLY LEU ILE SER PHE LYS ILE TRP GLN SEQRES 16 A 361 ASN LEU ARG LEU LYS THR ALA ALA ALA ALA ALA ALA GLU SEQRES 17 A 361 ALA PRO GLU GLY ALA ALA ALA GLY ASP GLY GLY ARG VAL SEQRES 18 A 361 ALA LEU ALA ARG VAL SER SER VAL LYS LEU ILE SER LYS SEQRES 19 A 361 ALA LYS ILE ARG THR VAL LYS MET THR PHE ILE ILE VAL SEQRES 20 A 361 LEU ALA PHE ILE VAL CYS TRP THR PRO PHE PHE PHE VAL SEQRES 21 A 361 GLN MET TRP SER VAL TRP ASP ALA ASN ALA PRO LYS GLU SEQRES 22 A 361 ALA SER ALA PHE ILE ILE VAL MET LEU LEU ALA SER LEU SEQRES 23 A 361 ASN SER CYS CYS LYS PRO TRP ILE TYR MET LEU PHE ALA SEQRES 24 A 361 PHE LYS ILE TRP GLN ASN SER ALA LEU GLY LYS GLU LEU SEQRES 25 A 361 ALA ALA LEU ILE GLY ARG ILE SER ALA ALA CYS TYR ILE SEQRES 26 A 361 LEU ALA ASP GLY ALA LYS ARG LEU GLY GLU PRO VAL ALA SEQRES 27 A 361 ILE LEU THR LEU SER PHE LYS ALA TYR LYS GLY LEU GLU SEQRES 28 A 361 GLU GLY SER LYS ALA GLY GLU ALA THR MET SEQRES 1 B 126 GLN VAL GLN LEU GLN GLU SER GLY GLY GLY LEU VAL GLN SEQRES 2 B 126 ALA GLY GLY SER LEU ARG LEU SER CYS ALA ALA SER GLY SEQRES 3 B 126 SER ILE SER ASP ASP ALA VAL MET GLY TRP TYR ARG GLN SEQRES 4 B 126 ALA PRO GLY LYS GLU ARG GLU LEU VAL ALA THR ILE SER SEQRES 5 B 126 TYR GLY ALA ILE THR ASN TYR ALA ASP SER VAL LYS GLY SEQRES 6 B 126 ARG PHE THR ILE SER ARG ASP ASN ALA LYS ASN THR VAL SEQRES 7 B 126 TYR LEU GLN MET ASN SER LEU LYS PRO GLU ASP THR ALA SEQRES 8 B 126 VAL TYR TYR CYS ALA ALA SER ALA ALA TYR TYR ARG LEU SEQRES 9 B 126 GLU THR GLN TYR TRP ARG PHE LEU PHE TYR TYR TRP GLY SEQRES 10 B 126 GLN GLY THR GLN VAL THR VAL SER SER HELIX 1 AA1 ASN A 35 HIS A 65 1 31 HELIX 2 AA2 SER A 72 THR A 102 1 31 HELIX 3 AA3 PRO A 108 CYS A 142 1 35 HELIX 4 AA4 ARG A 151 SER A 168 1 18 HELIX 5 AA5 ALA A 169 PHE A 175 1 7 HELIX 6 AA6 PRO A 194 TYR A 209 1 16 HELIX 7 AA7 TYR A 209 LEU A 222 1 14 HELIX 8 AA8 THR A 273 TRP A 297 1 25 HELIX 9 AA9 ALA A 310 SER A 319 1 10 HELIX 10 AB1 SER A 319 PHE A 332 1 14 HELIX 11 AB2 PHE A 1002 ALA A 1016 1 15 HELIX 12 AB3 ILE A 1066 ALA A 1077 1 12 HELIX 13 AB4 GLY A 1084 LYS A 1095 1 12 HELIX 14 AB5 TYR A 1120 MET A 1134 1 15 HELIX 15 AB6 ARG B 103 TYR B 108 1 6 SHEET 1 AA1 2 SER A 176 ALA A 181 0 SHEET 2 AA1 2 VAL A 184 TRP A 188 -1 O ASP A 186 N ARG A 178 SHEET 1 AA2 3 ARG B 19 LEU B 20 0 SHEET 2 AA2 3 THR B 77 GLN B 81 -1 O LEU B 80 N LEU B 20 SHEET 3 AA2 3 THR B 68 ASP B 72 -1 N SER B 70 O TYR B 79 SHEET 1 AA3 3 GLU B 46 ILE B 51 0 SHEET 2 AA3 3 MET B 34 ARG B 38 -1 N MET B 34 O ILE B 51 SHEET 3 AA3 3 TYR B 93 CYS B 95 -1 O TYR B 94 N TYR B 37 SSBOND 1 CYS B 22 CYS B 95 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 2279 2730 CONECT 2730 2279 MASTER 278 0 0 15 8 0 0 6 2949 2 2 38 END