HEADER MEMBRANE PROTEIN 24-JUL-25 9W0R TITLE CRYO-EM STRUCTURE OF APO-T2R46 IN COMPLEX WITH HETEROTRIMERIC G TITLE 2 PROTEIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: TASTE RECEPTOR TYPE 2 MEMBER 46; COMPND 3 CHAIN: R; COMPND 4 SYNONYM: T2R46,TASTE RECEPTOR TYPE 2 MEMBER 54,T2R54; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I) SUBUNIT ALPHA-1; COMPND 8 CHAIN: A; COMPND 9 SYNONYM: ADENYLATE CYCLASE-INHIBITING G ALPHA PROTEIN; COMPND 10 EC: 3.6.5.-; COMPND 11 ENGINEERED: YES; COMPND 12 MUTATION: YES; COMPND 13 MOL_ID: 3; COMPND 14 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I)/G(S)/G(T) SUBUNIT COMPND 15 BETA-1; COMPND 16 CHAIN: B; COMPND 17 SYNONYM: TRANSDUCIN BETA CHAIN 1; COMPND 18 ENGINEERED: YES; COMPND 19 MOL_ID: 4; COMPND 20 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I)/G(S)/G(O) SUBUNIT COMPND 21 GAMMA-2; COMPND 22 CHAIN: C; COMPND 23 SYNONYM: G GAMMA-I; COMPND 24 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: TAS2R46; SOURCE 6 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 7108; SOURCE 8 MOL_ID: 2; SOURCE 9 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 10 ORGANISM_COMMON: HUMAN; SOURCE 11 ORGANISM_TAXID: 9606; SOURCE 12 GENE: GNAI1; SOURCE 13 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 14 EXPRESSION_SYSTEM_TAXID: 7108; SOURCE 15 MOL_ID: 3; SOURCE 16 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 17 ORGANISM_COMMON: HUMAN; SOURCE 18 ORGANISM_TAXID: 9606; SOURCE 19 GENE: GNB1; SOURCE 20 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 21 EXPRESSION_SYSTEM_TAXID: 7108; SOURCE 22 MOL_ID: 4; SOURCE 23 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 24 ORGANISM_COMMON: HUMAN; SOURCE 25 ORGANISM_TAXID: 9606; SOURCE 26 GENE: GNG2; SOURCE 27 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 28 EXPRESSION_SYSTEM_TAXID: 7108 KEYWDS G PROTEIN-COUPLED RECEPTOR, BITTER TASTE RECEPTOR 14, BITTER TASTE KEYWDS 2 RECEPTOR 46, LIGAND BINDING, SIGNAL TRANSDUCTION, MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR Q.TAN,Y.YU,X.HAN,Q.ZHAO,B.WU REVDAT 1 22-APR-26 9W0R 0 JRNL AUTH Q.TAN,Y.YU,X.HAN,K.LIU,S.HAN,M.WANG,Y.ZHU,Q.CHEN,L.MA,C.YI, JRNL AUTH 2 X.CHU,B.WU,Q.ZHAO JRNL TITL LIGAND BINDING MODES OF THE BITTER TASTE RECEPTOR T2R14 AND JRNL TITL 2 T2R46 JRNL REF NAT.STRUCT.MOL.BIOL. 2026 JRNL REFN ESSN 1545-9985 JRNL DOI 10.1038/S41594-026-01786-8 REMARK 2 REMARK 2 RESOLUTION. 2.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : RELION, GCTF, RELION, RELION REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : 7X9A REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : NULL REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 31.780 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) : 2.700 REMARK 3 NUMBER OF PARTICLES : 196866 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 9W0R COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 28-JUL-25. REMARK 100 THE DEPOSITION ID IS D_1300057367. 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 : TERNARY COMPLEX OF T2R14 WITH G REMARK 245 PROTEIN HETEROTRIMERIC REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 2.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : BLOT FOR 1S 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 : 9856 REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : FEI TECNAI F30 REMARK 245 DETECTOR TYPE : GATAN K3 BIOQUANTUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 800.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1500.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : 2.70 REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 6000.00 REMARK 245 ILLUMINATION MODE : FLOOD BEAM 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: TETRAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: R, A, B, C 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 MET R -21 REMARK 465 LYS R -20 REMARK 465 THR R -19 REMARK 465 ILE R -18 REMARK 465 ILE R -17 REMARK 465 ALA R -16 REMARK 465 LEU R -15 REMARK 465 SER R -14 REMARK 465 TYR R -13 REMARK 465 ILE R -12 REMARK 465 PHE R -11 REMARK 465 CYS R -10 REMARK 465 LEU R -9 REMARK 465 VAL R -8 REMARK 465 PHE R -7 REMARK 465 ALA R -6 REMARK 465 ASP R -5 REMARK 465 TYR R -4 REMARK 465 LYS R -3 REMARK 465 ASP R -2 REMARK 465 ASP R -1 REMARK 465 ASP R 0 REMARK 465 MET R 1 REMARK 465 ILE R 2 REMARK 465 THR R 3 REMARK 465 PHE R 4 REMARK 465 LEU R 5 REMARK 465 PRO R 6 REMARK 465 ILE R 7 REMARK 465 ILE R 152 REMARK 465 ILE R 153 REMARK 465 TRP R 154 REMARK 465 THR R 155 REMARK 465 LYS R 156 REMARK 465 GLU R 157 REMARK 465 TYR R 158 REMARK 465 GLU R 159 REMARK 465 GLY R 160 REMARK 465 ASN R 161 REMARK 465 MET R 162 REMARK 465 THR R 163 REMARK 465 TRP R 164 REMARK 465 LYS R 165 REMARK 465 ILE R 166 REMARK 465 LYS R 167 REMARK 465 LEU R 168 REMARK 465 GLU R 253 REMARK 465 SER R 254 REMARK 465 LEU R 255 REMARK 465 GLU R 256 REMARK 465 ASN R 257 REMARK 465 LYS R 258 REMARK 465 PRO R 259 REMARK 465 GLY R 303 REMARK 465 GLU R 304 REMARK 465 PHE R 305 REMARK 465 LEU R 306 REMARK 465 GLU R 307 REMARK 465 VAL R 308 REMARK 465 LEU R 309 REMARK 465 PHE R 310 REMARK 465 GLN R 311 REMARK 465 GLY R 312 REMARK 465 PRO R 313 REMARK 465 TRP R 314 REMARK 465 SER R 315 REMARK 465 HIS R 316 REMARK 465 PRO R 317 REMARK 465 GLN R 318 REMARK 465 PHE R 319 REMARK 465 GLU R 320 REMARK 465 LYS R 321 REMARK 465 GLY R 322 REMARK 465 GLY R 323 REMARK 465 GLY R 324 REMARK 465 SER R 325 REMARK 465 GLY R 326 REMARK 465 GLY R 327 REMARK 465 GLY R 328 REMARK 465 SER R 329 REMARK 465 GLY R 330 REMARK 465 GLY R 331 REMARK 465 SER R 332 REMARK 465 ALA R 333 REMARK 465 TRP R 334 REMARK 465 SER R 335 REMARK 465 HIS R 336 REMARK 465 PRO R 337 REMARK 465 GLN R 338 REMARK 465 PHE R 339 REMARK 465 GLU R 340 REMARK 465 LYS R 341 REMARK 465 MET A 1 REMARK 465 GLY A 2 REMARK 465 CYS A 3 REMARK 465 THR A 4 REMARK 465 LEU A 5 REMARK 465 ILE A 56 REMARK 465 HIS A 57 REMARK 465 GLU A 58 REMARK 465 ALA A 59 REMARK 465 GLY A 60 REMARK 465 TYR A 61 REMARK 465 SER A 62 REMARK 465 GLU A 63 REMARK 465 GLU A 64 REMARK 465 GLU A 65 REMARK 465 CYS A 66 REMARK 465 LYS A 67 REMARK 465 GLN A 68 REMARK 465 TYR A 69 REMARK 465 LYS A 70 REMARK 465 ALA A 71 REMARK 465 VAL A 72 REMARK 465 VAL A 73 REMARK 465 TYR A 74 REMARK 465 SER A 75 REMARK 465 ASN A 76 REMARK 465 THR A 77 REMARK 465 ILE A 78 REMARK 465 GLN A 79 REMARK 465 SER A 80 REMARK 465 ILE A 81 REMARK 465 ILE A 82 REMARK 465 ALA A 83 REMARK 465 ILE A 84 REMARK 465 ILE A 85 REMARK 465 ARG A 86 REMARK 465 ALA A 87 REMARK 465 MET A 88 REMARK 465 GLY A 89 REMARK 465 ARG A 90 REMARK 465 LEU A 91 REMARK 465 LYS A 92 REMARK 465 ILE A 93 REMARK 465 ASP A 94 REMARK 465 PHE A 95 REMARK 465 GLY A 96 REMARK 465 ASP A 97 REMARK 465 SER A 98 REMARK 465 ALA A 99 REMARK 465 ARG A 100 REMARK 465 ALA A 101 REMARK 465 ASP A 102 REMARK 465 ASP A 103 REMARK 465 ALA A 104 REMARK 465 ARG A 105 REMARK 465 GLN A 106 REMARK 465 LEU A 107 REMARK 465 PHE A 108 REMARK 465 VAL A 109 REMARK 465 LEU A 110 REMARK 465 ALA A 111 REMARK 465 GLY A 112 REMARK 465 ALA A 113 REMARK 465 ALA A 114 REMARK 465 GLU A 115 REMARK 465 GLU A 116 REMARK 465 GLY A 117 REMARK 465 PHE A 118 REMARK 465 MET A 119 REMARK 465 THR A 120 REMARK 465 ALA A 121 REMARK 465 GLU A 122 REMARK 465 LEU A 123 REMARK 465 ALA A 124 REMARK 465 GLY A 125 REMARK 465 VAL A 126 REMARK 465 ILE A 127 REMARK 465 LYS A 128 REMARK 465 ARG A 129 REMARK 465 LEU A 130 REMARK 465 TRP A 131 REMARK 465 LYS A 132 REMARK 465 ASP A 133 REMARK 465 SER A 134 REMARK 465 GLY A 135 REMARK 465 VAL A 136 REMARK 465 GLN A 137 REMARK 465 ALA A 138 REMARK 465 CYS A 139 REMARK 465 PHE A 140 REMARK 465 ASN A 141 REMARK 465 ARG A 142 REMARK 465 SER A 143 REMARK 465 ARG A 144 REMARK 465 GLU A 145 REMARK 465 TYR A 146 REMARK 465 GLN A 147 REMARK 465 LEU A 148 REMARK 465 ASN A 149 REMARK 465 ASP A 150 REMARK 465 SER A 151 REMARK 465 ALA A 152 REMARK 465 ALA A 153 REMARK 465 TYR A 154 REMARK 465 TYR A 155 REMARK 465 LEU A 156 REMARK 465 ASN A 157 REMARK 465 ASP A 158 REMARK 465 LEU A 159 REMARK 465 ASP A 160 REMARK 465 ARG A 161 REMARK 465 ILE A 162 REMARK 465 ALA A 163 REMARK 465 GLN A 164 REMARK 465 PRO A 165 REMARK 465 ASN A 166 REMARK 465 TYR A 167 REMARK 465 ILE A 168 REMARK 465 PRO A 169 REMARK 465 THR A 170 REMARK 465 GLN A 171 REMARK 465 GLN A 172 REMARK 465 ASP A 173 REMARK 465 VAL A 174 REMARK 465 LEU A 175 REMARK 465 ARG A 176 REMARK 465 THR A 177 REMARK 465 ARG A 178 REMARK 465 VAL A 179 REMARK 465 LYS A 180 REMARK 465 THR A 181 REMARK 465 LEU A 232 REMARK 465 VAL A 233 REMARK 465 LEU A 234 REMARK 465 ALA A 235 REMARK 465 GLU A 236 REMARK 465 ASP A 237 REMARK 465 GLU A 238 REMARK 465 GLU A 239 REMARK 465 MET B -10 REMARK 465 HIS B -9 REMARK 465 HIS B -8 REMARK 465 HIS B -7 REMARK 465 HIS B -6 REMARK 465 HIS B -5 REMARK 465 HIS B -4 REMARK 465 GLY B -3 REMARK 465 SER B -2 REMARK 465 LEU B -1 REMARK 465 LEU B 0 REMARK 465 GLN B 1 REMARK 465 SER B 2 REMARK 465 GLU B 3 REMARK 465 LEU B 4 REMARK 465 ASP B 5 REMARK 465 GLN B 6 REMARK 465 MET C 1 REMARK 465 ALA C 2 REMARK 465 SER C 3 REMARK 465 ASN C 4 REMARK 465 ASN C 5 REMARK 465 THR C 6 REMARK 465 ALA C 7 REMARK 465 SER C 8 REMARK 465 GLU C 63 REMARK 465 LYS C 64 REMARK 465 LYS C 65 REMARK 465 PHE C 66 REMARK 465 PHE C 67 REMARK 465 CYS C 68 REMARK 465 ALA C 69 REMARK 465 ILE C 70 REMARK 465 LEU C 71 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 PHE R 9 CG CD1 CD2 CE1 CE2 CZ REMARK 470 SER R 10 OG REMARK 470 VAL R 14 CG1 CG2 REMARK 470 VAL R 18 CG1 CG2 REMARK 470 PHE R 22 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LEU R 29 CG CD1 CD2 REMARK 470 PHE R 36 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ARG R 38 CG CD NE CZ NH1 NH2 REMARK 470 GLN R 39 CG CD OE1 NE2 REMARK 470 LYS R 40 CG CD CE NZ REMARK 470 ASN R 65 CG OD1 ND2 REMARK 470 TYR R 67 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ASN R 72 CG OD1 ND2 REMARK 470 PHE R 75 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ASN R 76 CG OD1 ND2 REMARK 470 ARG R 81 CG CD NE CZ NH1 NH2 REMARK 470 PHE R 145 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ARG R 169 CG CD NE CZ NH1 NH2 REMARK 470 SER R 170 OG REMARK 470 MET R 172 CG SD CE REMARK 470 LEU R 174 CG CD1 CD2 REMARK 470 ASN R 176 CG OD1 ND2 REMARK 470 GLN R 217 CG CD OE1 NE2 REMARK 470 LYS R 222 CG CD CE NZ REMARK 470 PHE R 261 CG CD1 CD2 CE1 CE2 CZ REMARK 470 TYR R 299 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LYS R 302 CG CD CE NZ REMARK 470 LYS A 10 CG CD CE NZ REMARK 470 ASP A 26 CG OD1 OD2 REMARK 470 GLU A 43 CG CD OE1 OE2 REMARK 470 LYS A 51 CG CD CE NZ REMARK 470 MET A 53 CG SD CE REMARK 470 LYS A 54 CG CD CE NZ REMARK 470 ILE A 55 CG1 CG2 CD1 REMARK 470 GLU A 186 CG CD OE1 OE2 REMARK 470 ASP A 193 CG OD1 OD2 REMARK 470 THR A 202 CB OG1 CG2 REMARK 470 ASP A 272 CG OD1 OD2 REMARK 470 GLU A 275 CG CD OE1 OE2 REMARK 470 GLU A 276 CG CD OE1 OE2 REMARK 470 LYS A 280 CG CD CE NZ REMARK 470 GLU A 289 CG CD OE1 OE2 REMARK 470 ASP A 315 CG OD1 OD2 REMARK 470 SER A 326 OG REMARK 470 THR A 327 OG1 CG2 REMARK 470 ASP A 328 CG OD1 OD2 REMARK 470 ASP A 350 CG OD1 OD2 REMARK 470 ARG B 8 CG CD NE CZ NH1 NH2 REMARK 470 GLN B 9 CG CD OE1 NE2 REMARK 470 GLU B 12 CG CD OE1 OE2 REMARK 470 GLN B 13 CG CD OE1 NE2 REMARK 470 LYS B 15 CG CD CE NZ REMARK 470 ARG B 19 CG CD NE CZ NH1 NH2 REMARK 470 LYS B 23 CG CD CE NZ REMARK 470 ASN B 36 CG OD1 ND2 REMARK 470 ASP B 38 CG OD1 OD2 REMARK 470 ARG B 42 CG CD NE CZ NH1 NH2 REMARK 470 ARG B 129 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 130 CG CD OE1 OE2 REMARK 470 GLU B 215 CG CD OE1 OE2 REMARK 470 ASP B 312 CG OD1 OD2 REMARK 470 GLN C 11 CG CD OE1 NE2 REMARK 470 ARG C 13 CG CD NE CZ NH1 NH2 REMARK 470 LYS C 14 CG CD CE NZ REMARK 470 GLU C 17 CG CD OE1 OE2 REMARK 470 LYS C 20 CG CD CE NZ REMARK 470 ASP C 26 CG OD1 OD2 REMARK 470 LYS C 29 CG CD CE NZ REMARK 470 GLU C 58 CG CD OE1 OE2 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 ALA R 74 32.35 -140.28 REMARK 500 SER R 77 -124.85 62.33 REMARK 500 ASN R 150 31.21 -96.79 REMARK 500 HIS R 212 -169.49 -78.17 REMARK 500 GLN R 217 -62.40 -95.75 REMARK 500 LYS R 222 -6.67 72.87 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-65513 RELATED DB: EMDB REMARK 900 DIVERSE LIGAND BINDING MODES OF THE BITTER TASTE RECEPTOR T2R14 AND REMARK 900 T2R46 DBREF 9W0R R 1 304 UNP P59540 T2R46_HUMAN 1 304 DBREF 9W0R A 1 354 UNP P63096 GNAI1_HUMAN 1 354 DBREF 9W0R B 2 340 UNP P62873 GBB1_HUMAN 2 340 DBREF 9W0R C 1 71 UNP P59768 GBG2_HUMAN 1 71 SEQADV 9W0R MET R -21 UNP P59540 INITIATING METHIONINE SEQADV 9W0R LYS R -20 UNP P59540 EXPRESSION TAG SEQADV 9W0R THR R -19 UNP P59540 EXPRESSION TAG SEQADV 9W0R ILE R -18 UNP P59540 EXPRESSION TAG SEQADV 9W0R ILE R -17 UNP P59540 EXPRESSION TAG SEQADV 9W0R ALA R -16 UNP P59540 EXPRESSION TAG SEQADV 9W0R LEU R -15 UNP P59540 EXPRESSION TAG SEQADV 9W0R SER R -14 UNP P59540 EXPRESSION TAG SEQADV 9W0R TYR R -13 UNP P59540 EXPRESSION TAG SEQADV 9W0R ILE R -12 UNP P59540 EXPRESSION TAG SEQADV 9W0R PHE R -11 UNP P59540 EXPRESSION TAG SEQADV 9W0R CYS R -10 UNP P59540 EXPRESSION TAG SEQADV 9W0R LEU R -9 UNP P59540 EXPRESSION TAG SEQADV 9W0R VAL R -8 UNP P59540 EXPRESSION TAG SEQADV 9W0R PHE R -7 UNP P59540 EXPRESSION TAG SEQADV 9W0R ALA R -6 UNP P59540 EXPRESSION TAG SEQADV 9W0R ASP R -5 UNP P59540 EXPRESSION TAG SEQADV 9W0R TYR R -4 UNP P59540 EXPRESSION TAG SEQADV 9W0R LYS R -3 UNP P59540 EXPRESSION TAG SEQADV 9W0R ASP R -2 UNP P59540 EXPRESSION TAG SEQADV 9W0R ASP R -1 UNP P59540 EXPRESSION TAG SEQADV 9W0R ASP R 0 UNP P59540 EXPRESSION TAG SEQADV 9W0R PHE R 305 UNP P59540 EXPRESSION TAG SEQADV 9W0R LEU R 306 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLU R 307 UNP P59540 EXPRESSION TAG SEQADV 9W0R VAL R 308 UNP P59540 EXPRESSION TAG SEQADV 9W0R LEU R 309 UNP P59540 EXPRESSION TAG SEQADV 9W0R PHE R 310 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLN R 311 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 312 UNP P59540 EXPRESSION TAG SEQADV 9W0R PRO R 313 UNP P59540 EXPRESSION TAG SEQADV 9W0R TRP R 314 UNP P59540 EXPRESSION TAG SEQADV 9W0R SER R 315 UNP P59540 EXPRESSION TAG SEQADV 9W0R HIS R 316 UNP P59540 EXPRESSION TAG SEQADV 9W0R PRO R 317 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLN R 318 UNP P59540 EXPRESSION TAG SEQADV 9W0R PHE R 319 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLU R 320 UNP P59540 EXPRESSION TAG SEQADV 9W0R LYS R 321 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 322 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 323 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 324 UNP P59540 EXPRESSION TAG SEQADV 9W0R SER R 325 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 326 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 327 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 328 UNP P59540 EXPRESSION TAG SEQADV 9W0R SER R 329 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 330 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLY R 331 UNP P59540 EXPRESSION TAG SEQADV 9W0R SER R 332 UNP P59540 EXPRESSION TAG SEQADV 9W0R ALA R 333 UNP P59540 EXPRESSION TAG SEQADV 9W0R TRP R 334 UNP P59540 EXPRESSION TAG SEQADV 9W0R SER R 335 UNP P59540 EXPRESSION TAG SEQADV 9W0R HIS R 336 UNP P59540 EXPRESSION TAG SEQADV 9W0R PRO R 337 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLN R 338 UNP P59540 EXPRESSION TAG SEQADV 9W0R PHE R 339 UNP P59540 EXPRESSION TAG SEQADV 9W0R GLU R 340 UNP P59540 EXPRESSION TAG SEQADV 9W0R LYS R 341 UNP P59540 EXPRESSION TAG SEQADV 9W0R ASN A 47 UNP P63096 SER 47 ENGINEERED MUTATION SEQADV 9W0R THR A 202 UNP P63096 GLY 202 ENGINEERED MUTATION SEQADV 9W0R ALA A 203 UNP P63096 GLY 203 ENGINEERED MUTATION SEQADV 9W0R ALA A 245 UNP P63096 GLU 245 ENGINEERED MUTATION SEQADV 9W0R SER A 326 UNP P63096 ALA 326 ENGINEERED MUTATION SEQADV 9W0R MET B -10 UNP P62873 INITIATING METHIONINE SEQADV 9W0R HIS B -9 UNP P62873 EXPRESSION TAG SEQADV 9W0R HIS B -8 UNP P62873 EXPRESSION TAG SEQADV 9W0R HIS B -7 UNP P62873 EXPRESSION TAG SEQADV 9W0R HIS B -6 UNP P62873 EXPRESSION TAG SEQADV 9W0R HIS B -5 UNP P62873 EXPRESSION TAG SEQADV 9W0R HIS B -4 UNP P62873 EXPRESSION TAG SEQADV 9W0R GLY B -3 UNP P62873 EXPRESSION TAG SEQADV 9W0R SER B -2 UNP P62873 EXPRESSION TAG SEQADV 9W0R LEU B -1 UNP P62873 EXPRESSION TAG SEQADV 9W0R LEU B 0 UNP P62873 EXPRESSION TAG SEQADV 9W0R GLN B 1 UNP P62873 EXPRESSION TAG SEQRES 1 R 363 MET LYS THR ILE ILE ALA LEU SER TYR ILE PHE CYS LEU SEQRES 2 R 363 VAL PHE ALA ASP TYR LYS ASP ASP ASP MET ILE THR PHE SEQRES 3 R 363 LEU PRO ILE ILE PHE SER ILE LEU ILE VAL VAL THR PHE SEQRES 4 R 363 VAL ILE GLY ASN PHE ALA ASN GLY PHE ILE ALA LEU VAL SEQRES 5 R 363 ASN SER ILE GLU TRP PHE LYS ARG GLN LYS ILE SER PHE SEQRES 6 R 363 ALA ASP GLN ILE LEU THR ALA LEU ALA VAL SER ARG VAL SEQRES 7 R 363 GLY LEU LEU TRP VAL LEU VAL LEU ASN TRP TYR ALA THR SEQRES 8 R 363 GLU LEU ASN PRO ALA PHE ASN SER ILE GLU VAL ARG ILE SEQRES 9 R 363 THR ALA TYR ASN VAL TRP ALA VAL ILE ASN HIS PHE SER SEQRES 10 R 363 ASN TRP LEU ALA THR SER LEU SER ILE PHE TYR LEU LEU SEQRES 11 R 363 LYS ILE ALA ASN PHE SER ASN LEU ILE PHE LEU HIS LEU SEQRES 12 R 363 LYS ARG ARG VAL LYS SER VAL VAL LEU VAL ILE LEU LEU SEQRES 13 R 363 GLY PRO LEU LEU PHE LEU VAL CYS HIS LEU PHE VAL ILE SEQRES 14 R 363 ASN MET ASN GLN ILE ILE TRP THR LYS GLU TYR GLU GLY SEQRES 15 R 363 ASN MET THR TRP LYS ILE LYS LEU ARG SER ALA MET TYR SEQRES 16 R 363 LEU SER ASN THR THR VAL THR ILE LEU ALA ASN LEU VAL SEQRES 17 R 363 PRO PHE THR LEU THR LEU ILE SER PHE LEU LEU LEU ILE SEQRES 18 R 363 CYS SER LEU CYS LYS HIS LEU LYS LYS MET GLN LEU HIS SEQRES 19 R 363 GLY LYS GLY SER GLN ASP PRO SER MET LYS VAL HIS ILE SEQRES 20 R 363 LYS ALA LEU GLN THR VAL THR SER PHE LEU LEU LEU CYS SEQRES 21 R 363 ALA ILE TYR PHE LEU SER ILE ILE MET SER VAL TRP SER SEQRES 22 R 363 PHE GLU SER LEU GLU ASN LYS PRO VAL PHE MET PHE CYS SEQRES 23 R 363 GLU ALA ILE ALA PHE SER TYR PRO SER THR HIS PRO PHE SEQRES 24 R 363 ILE LEU ILE TRP GLY ASN LYS LYS LEU LYS GLN THR PHE SEQRES 25 R 363 LEU SER VAL LEU TRP HIS VAL ARG TYR TRP VAL LYS GLY SEQRES 26 R 363 GLU PHE LEU GLU VAL LEU PHE GLN GLY PRO TRP SER HIS SEQRES 27 R 363 PRO GLN PHE GLU LYS GLY GLY GLY SER GLY GLY GLY SER SEQRES 28 R 363 GLY GLY SER ALA TRP SER HIS PRO GLN PHE GLU LYS SEQRES 1 A 354 MET GLY CYS THR LEU SER ALA GLU ASP LYS ALA ALA VAL SEQRES 2 A 354 GLU ARG SER LYS MET ILE ASP ARG ASN LEU ARG GLU ASP SEQRES 3 A 354 GLY GLU LYS ALA ALA ARG GLU VAL LYS LEU LEU LEU LEU SEQRES 4 A 354 GLY ALA GLY GLU SER GLY LYS ASN THR ILE VAL LYS GLN SEQRES 5 A 354 MET LYS ILE ILE HIS GLU ALA GLY TYR SER GLU GLU GLU SEQRES 6 A 354 CYS LYS GLN TYR LYS ALA VAL VAL TYR SER ASN THR ILE SEQRES 7 A 354 GLN SER ILE ILE ALA ILE ILE ARG ALA MET GLY ARG LEU SEQRES 8 A 354 LYS ILE ASP PHE GLY ASP SER ALA ARG ALA ASP ASP ALA SEQRES 9 A 354 ARG GLN LEU PHE VAL LEU ALA GLY ALA ALA GLU GLU GLY SEQRES 10 A 354 PHE MET THR ALA GLU LEU ALA GLY VAL ILE LYS ARG LEU SEQRES 11 A 354 TRP LYS ASP SER GLY VAL GLN ALA CYS PHE ASN ARG SER SEQRES 12 A 354 ARG GLU TYR GLN LEU ASN ASP SER ALA ALA TYR TYR LEU SEQRES 13 A 354 ASN ASP LEU ASP ARG ILE ALA GLN PRO ASN TYR ILE PRO SEQRES 14 A 354 THR GLN GLN ASP VAL LEU ARG THR ARG VAL LYS THR THR SEQRES 15 A 354 GLY ILE VAL GLU THR HIS PHE THR PHE LYS ASP LEU HIS SEQRES 16 A 354 PHE LYS MET PHE ASP VAL THR ALA GLN ARG SER GLU ARG SEQRES 17 A 354 LYS LYS TRP ILE HIS CYS PHE GLU GLY VAL THR ALA ILE SEQRES 18 A 354 ILE PHE CYS VAL ALA LEU SER ASP TYR ASP LEU VAL LEU SEQRES 19 A 354 ALA GLU ASP GLU GLU MET ASN ARG MET HIS ALA SER MET SEQRES 20 A 354 LYS LEU PHE ASP SER ILE CYS ASN ASN LYS TRP PHE THR SEQRES 21 A 354 ASP THR SER ILE ILE LEU PHE LEU ASN LYS LYS ASP LEU SEQRES 22 A 354 PHE GLU GLU LYS ILE LYS LYS SER PRO LEU THR ILE CYS SEQRES 23 A 354 TYR PRO GLU TYR ALA GLY SER ASN THR TYR GLU GLU ALA SEQRES 24 A 354 ALA ALA TYR ILE GLN CYS GLN PHE GLU ASP LEU ASN LYS SEQRES 25 A 354 ARG LYS ASP THR LYS GLU ILE TYR THR HIS PHE THR CYS SEQRES 26 A 354 SER THR ASP THR LYS ASN VAL GLN PHE VAL PHE ASP ALA SEQRES 27 A 354 VAL THR ASP VAL ILE ILE LYS ASN ASN LEU LYS ASP CYS SEQRES 28 A 354 GLY LEU PHE SEQRES 1 B 351 MET HIS HIS HIS HIS HIS HIS GLY SER LEU LEU GLN SER SEQRES 2 B 351 GLU LEU ASP GLN LEU ARG GLN GLU ALA GLU GLN LEU LYS SEQRES 3 B 351 ASN GLN ILE ARG ASP ALA ARG LYS ALA CYS ALA ASP ALA SEQRES 4 B 351 THR LEU SER GLN ILE THR ASN ASN ILE ASP PRO VAL GLY SEQRES 5 B 351 ARG ILE GLN MET ARG THR ARG ARG THR LEU ARG GLY HIS SEQRES 6 B 351 LEU ALA LYS ILE TYR ALA MET HIS TRP GLY THR ASP SER SEQRES 7 B 351 ARG LEU LEU VAL SER ALA SER GLN ASP GLY LYS LEU ILE SEQRES 8 B 351 ILE TRP ASP SER TYR THR THR ASN LYS VAL HIS ALA ILE SEQRES 9 B 351 PRO LEU ARG SER SER TRP VAL MET THR CYS ALA TYR ALA SEQRES 10 B 351 PRO SER GLY ASN TYR VAL ALA CYS GLY GLY LEU ASP ASN SEQRES 11 B 351 ILE CYS SER ILE TYR ASN LEU LYS THR ARG GLU GLY ASN SEQRES 12 B 351 VAL ARG VAL SER ARG GLU LEU ALA GLY HIS THR GLY TYR SEQRES 13 B 351 LEU SER CYS CYS ARG PHE LEU ASP ASP ASN GLN ILE VAL SEQRES 14 B 351 THR SER SER GLY ASP THR THR CYS ALA LEU TRP ASP ILE SEQRES 15 B 351 GLU THR GLY GLN GLN THR THR THR PHE THR GLY HIS THR SEQRES 16 B 351 GLY ASP VAL MET SER LEU SER LEU ALA PRO ASP THR ARG SEQRES 17 B 351 LEU PHE VAL SER GLY ALA CYS ASP ALA SER ALA LYS LEU SEQRES 18 B 351 TRP ASP VAL ARG GLU GLY MET CYS ARG GLN THR PHE THR SEQRES 19 B 351 GLY HIS GLU SER ASP ILE ASN ALA ILE CYS PHE PHE PRO SEQRES 20 B 351 ASN GLY ASN ALA PHE ALA THR GLY SER ASP ASP ALA THR SEQRES 21 B 351 CYS ARG LEU PHE ASP LEU ARG ALA ASP GLN GLU LEU MET SEQRES 22 B 351 THR TYR SER HIS ASP ASN ILE ILE CYS GLY ILE THR SER SEQRES 23 B 351 VAL SER PHE SER LYS SER GLY ARG LEU LEU LEU ALA GLY SEQRES 24 B 351 TYR ASP ASP PHE ASN CYS ASN VAL TRP ASP ALA LEU LYS SEQRES 25 B 351 ALA ASP ARG ALA GLY VAL LEU ALA GLY HIS ASP ASN ARG SEQRES 26 B 351 VAL SER CYS LEU GLY VAL THR ASP ASP GLY MET ALA VAL SEQRES 27 B 351 ALA THR GLY SER TRP ASP SER PHE LEU LYS ILE TRP ASN SEQRES 1 C 71 MET ALA SER ASN ASN THR ALA SER ILE ALA GLN ALA ARG SEQRES 2 C 71 LYS LEU VAL GLU GLN LEU LYS MET GLU ALA ASN ILE ASP SEQRES 3 C 71 ARG ILE LYS VAL SER LYS ALA ALA ALA ASP LEU MET ALA SEQRES 4 C 71 TYR CYS GLU ALA HIS ALA LYS GLU ASP PRO LEU LEU THR SEQRES 5 C 71 PRO VAL PRO ALA SER GLU ASN PRO PHE ARG GLU LYS LYS SEQRES 6 C 71 PHE PHE CYS ALA ILE LEU HELIX 1 AA1 ILE R 8 ARG R 38 1 31 HELIX 2 AA2 SER R 42 LEU R 71 1 30 HELIX 3 AA3 SER R 77 ALA R 111 1 35 HELIX 4 AA4 ASN R 115 ARG R 124 1 10 HELIX 5 AA5 ARG R 124 ASN R 150 1 27 HELIX 6 AA6 SER R 170 ASN R 176 1 7 HELIX 7 AA7 THR R 177 HIS R 212 1 36 HELIX 8 AA8 HIS R 224 MET R 247 1 24 HELIX 9 AA9 PHE R 261 SER R 270 1 10 HELIX 10 AB1 SER R 270 ASN R 283 1 14 HELIX 11 AB2 ASN R 283 LYS R 302 1 20 HELIX 12 AB3 ALA A 7 ALA A 31 1 25 HELIX 13 AB4 GLU A 207 GLU A 216 5 10 HELIX 14 AB5 ASN A 241 ASN A 255 1 15 HELIX 15 AB6 LYS A 270 ILE A 278 1 9 HELIX 16 AB7 PRO A 282 CYS A 286 5 5 HELIX 17 AB8 THR A 295 ASP A 309 1 15 HELIX 18 AB9 LYS A 330 CYS A 351 1 22 HELIX 19 AC1 ARG B 8 ALA B 26 1 19 HELIX 20 AC2 THR B 29 ILE B 33 5 5 HELIX 21 AC3 ALA C 10 ASN C 24 1 15 HELIX 22 AC4 LYS C 29 HIS C 44 1 16 SHEET 1 AA1 6 VAL A 185 THR A 190 0 SHEET 2 AA1 6 HIS A 195 ASP A 200 -1 O PHE A 196 N PHE A 189 SHEET 3 AA1 6 VAL A 34 GLY A 40 1 N VAL A 34 O HIS A 195 SHEET 4 AA1 6 ALA A 220 ALA A 226 1 O ILE A 222 N LEU A 39 SHEET 5 AA1 6 SER A 263 ASN A 269 1 O PHE A 267 N PHE A 223 SHEET 6 AA1 6 ILE A 319 PHE A 323 1 O TYR A 320 N LEU A 266 SHEET 1 AA2 4 ARG B 46 LEU B 51 0 SHEET 2 AA2 4 LEU B 336 ASN B 340 -1 O LEU B 336 N LEU B 51 SHEET 3 AA2 4 VAL B 327 SER B 331 -1 N THR B 329 O LYS B 337 SHEET 4 AA2 4 VAL B 315 VAL B 320 -1 N CYS B 317 O GLY B 330 SHEET 1 AA3 4 ILE B 58 TRP B 63 0 SHEET 2 AA3 4 LEU B 69 SER B 74 -1 O ALA B 73 N TYR B 59 SHEET 3 AA3 4 LYS B 78 ASP B 83 -1 O TRP B 82 N LEU B 70 SHEET 4 AA3 4 LYS B 89 PRO B 94 -1 O VAL B 90 N ILE B 81 SHEET 1 AA4 4 VAL B 100 TYR B 105 0 SHEET 2 AA4 4 TYR B 111 GLY B 116 -1 O GLY B 115 N MET B 101 SHEET 3 AA4 4 ILE B 120 ASN B 125 -1 O TYR B 124 N VAL B 112 SHEET 4 AA4 4 ARG B 134 ALA B 140 -1 O ARG B 137 N ILE B 123 SHEET 1 AA5 4 LEU B 146 PHE B 151 0 SHEET 2 AA5 4 GLN B 156 SER B 161 -1 O VAL B 158 N ARG B 150 SHEET 3 AA5 4 THR B 165 ASP B 170 -1 O TRP B 169 N ILE B 157 SHEET 4 AA5 4 GLN B 176 PHE B 180 -1 O PHE B 180 N CYS B 166 SHEET 1 AA6 4 VAL B 187 LEU B 192 0 SHEET 2 AA6 4 LEU B 198 ALA B 203 -1 O GLY B 202 N MET B 188 SHEET 3 AA6 4 SER B 207 ASP B 212 -1 O TRP B 211 N PHE B 199 SHEET 4 AA6 4 CYS B 218 THR B 223 -1 O PHE B 222 N ALA B 208 SHEET 1 AA7 4 ILE B 229 PHE B 234 0 SHEET 2 AA7 4 ALA B 240 SER B 245 -1 O ALA B 242 N CYS B 233 SHEET 3 AA7 4 CYS B 250 ASP B 254 -1 O PHE B 253 N PHE B 241 SHEET 4 AA7 4 GLN B 259 TYR B 264 -1 O LEU B 261 N LEU B 252 SHEET 1 AA8 4 ILE B 273 PHE B 278 0 SHEET 2 AA8 4 LEU B 284 TYR B 289 -1 O LEU B 286 N SER B 277 SHEET 3 AA8 4 CYS B 294 ASP B 298 -1 O ASN B 295 N ALA B 287 SHEET 4 AA8 4 ARG B 304 LEU B 308 -1 O GLY B 306 N VAL B 296 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 MASTER 469 0 0 22 34 0 0 6 6650 4 0 89 END