HEADER MEMBRANE PROTEIN/IMMUNE SYSTEM 11-SEP-24 9JID TITLE CRYO-EM STRUCTURE OF THE NIACIN-HCAR3-GI COMPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: HYDROXYCARBOXYLIC ACID RECEPTOR 3; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: G-PROTEIN COUPLED RECEPTOR 109B,G-PROTEIN COUPLED RECEPTOR COMPND 5 HM74,G-PROTEIN COUPLED RECEPTOR HM74B,NIACIN RECEPTOR 2,NICOTINIC COMPND 6 ACID RECEPTOR 2; COMPND 7 ENGINEERED: YES; COMPND 8 MOL_ID: 2; COMPND 9 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I) SUBUNIT ALPHA-1; COMPND 10 CHAIN: C; COMPND 11 SYNONYM: ADENYLATE CYCLASE-INHIBITING G ALPHA PROTEIN; COMPND 12 ENGINEERED: YES; COMPND 13 MUTATION: YES; COMPND 14 MOL_ID: 3; COMPND 15 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I)/G(S)/G(T) SUBUNIT COMPND 16 BETA-1; COMPND 17 CHAIN: B; 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: G; COMPND 23 SYNONYM: G GAMMA-I; COMPND 24 ENGINEERED: YES; COMPND 25 MOL_ID: 5; COMPND 26 MOLECULE: SCFV16; COMPND 27 CHAIN: S; COMPND 28 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: HCAR3, GPR109B, HCA3, HM74B, NIACR2; 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; SOURCE 29 MOL_ID: 5; SOURCE 30 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 31 ORGANISM_COMMON: HUMAN; SOURCE 32 ORGANISM_TAXID: 9606; SOURCE 33 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 34 EXPRESSION_SYSTEM_TAXID: 7108 KEYWDS COMPLEX, MEMBRANE PROTEIN/IMMUNE SYSTEM, MEMBRANE PROTEIN-IMMUNE KEYWDS 2 SYSTEM COMPLEX EXPDTA ELECTRON MICROSCOPY AUTHOR Y.FANG,Y.FANG REVDAT 1 17-DEC-25 9JID 0 JRNL AUTH F.YE,X.PAN,Z.ZHANG,X.XIANG,X.LI,B.ZHANG,P.NING,A.LIU,Q.WANG, JRNL AUTH 2 K.GONG,J.LI,L.ZHU,C.QIAN,G.CHEN,Y.DU JRNL TITL STRUCTURAL BASIS FOR LIGAND RECOGNITION OF THE HUMAN JRNL TITL 2 HYDROXYCARBOXYLIC ACID RECEPTOR HCAR3. JRNL REF CELL REP V. 43 14895 2024 JRNL REFN ESSN 2211-1247 JRNL PMID 39427321 JRNL DOI 10.1016/J.CELREP.2024.114895 REMARK 2 REMARK 2 RESOLUTION. 2.78 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) : 2.780 REMARK 3 NUMBER OF PARTICLES : 356213 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING AND AMPLITUDE REMARK 3 CORRECTION REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 9JID COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 19-SEP-24. REMARK 100 THE DEPOSITION ID IS D_1300051425. 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 APO REMARK 245 HCAR3-GI COMPLEX 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 : 7.40 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 : FEI MORGAGNI REMARK 245 DETECTOR TYPE : GATAN K3 BIOCONTINUUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1000.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1400.00 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) : 340.00 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: PENTAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, C, B, G, S 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 A 1 REMARK 465 ASN A 2 REMARK 465 ARG A 3 REMARK 465 HIS A 4 REMARK 465 HIS A 5 REMARK 465 LEU A 6 REMARK 465 GLN A 7 REMARK 465 ASP A 8 REMARK 465 HIS A 9 REMARK 465 PHE A 10 REMARK 465 LEU A 11 REMARK 465 GLU A 12 REMARK 465 ILE A 13 REMARK 465 ASP A 14 REMARK 465 PHE A 304 REMARK 465 PHE A 305 REMARK 465 SER A 306 REMARK 465 THR A 307 REMARK 465 LEU A 308 REMARK 465 ILE A 309 REMARK 465 ASN A 310 REMARK 465 ARG A 311 REMARK 465 CYS A 312 REMARK 465 LEU A 313 REMARK 465 GLN A 314 REMARK 465 ARG A 315 REMARK 465 LYS A 316 REMARK 465 ILE A 317 REMARK 465 THR A 318 REMARK 465 GLY A 319 REMARK 465 GLU A 320 REMARK 465 PRO A 321 REMARK 465 ASP A 322 REMARK 465 ASN A 323 REMARK 465 ASN A 324 REMARK 465 ARG A 325 REMARK 465 SER A 326 REMARK 465 THR A 327 REMARK 465 SER A 328 REMARK 465 VAL A 329 REMARK 465 GLU A 330 REMARK 465 LEU A 331 REMARK 465 THR A 332 REMARK 465 GLY A 333 REMARK 465 ASP A 334 REMARK 465 PRO A 335 REMARK 465 ASN A 336 REMARK 465 LYS A 337 REMARK 465 THR A 338 REMARK 465 ARG A 339 REMARK 465 GLY A 340 REMARK 465 ALA A 341 REMARK 465 PRO A 342 REMARK 465 GLU A 343 REMARK 465 ALA A 344 REMARK 465 LEU A 345 REMARK 465 ILE A 346 REMARK 465 ALA A 347 REMARK 465 ASN A 348 REMARK 465 SER A 349 REMARK 465 GLY A 350 REMARK 465 GLU A 351 REMARK 465 PRO A 352 REMARK 465 TRP A 353 REMARK 465 SER A 354 REMARK 465 PRO A 355 REMARK 465 SER A 356 REMARK 465 TYR A 357 REMARK 465 LEU A 358 REMARK 465 GLY A 359 REMARK 465 PRO A 360 REMARK 465 THR A 361 REMARK 465 SER A 362 REMARK 465 ASN A 363 REMARK 465 ASN A 364 REMARK 465 HIS A 365 REMARK 465 SER A 366 REMARK 465 LYS A 367 REMARK 465 LYS A 368 REMARK 465 GLY A 369 REMARK 465 HIS A 370 REMARK 465 CYS A 371 REMARK 465 HIS A 372 REMARK 465 GLN A 373 REMARK 465 GLU A 374 REMARK 465 PRO A 375 REMARK 465 ALA A 376 REMARK 465 SER A 377 REMARK 465 LEU A 378 REMARK 465 GLU A 379 REMARK 465 LYS A 380 REMARK 465 GLN A 381 REMARK 465 LEU A 382 REMARK 465 GLY A 383 REMARK 465 CYS A 384 REMARK 465 CYS A 385 REMARK 465 ILE A 386 REMARK 465 GLU A 387 REMARK 465 LYS C 54 REMARK 465 ILE C 55 REMARK 465 ILE C 56 REMARK 465 HIS C 57 REMARK 465 GLU C 58 REMARK 465 ALA C 59 REMARK 465 GLY C 60 REMARK 465 TYR C 61 REMARK 465 SER C 62 REMARK 465 GLU C 63 REMARK 465 GLU C 64 REMARK 465 GLU C 65 REMARK 465 CYS C 66 REMARK 465 LYS C 67 REMARK 465 GLN C 68 REMARK 465 TYR C 69 REMARK 465 LYS C 70 REMARK 465 ALA C 71 REMARK 465 VAL C 72 REMARK 465 VAL C 73 REMARK 465 TYR C 74 REMARK 465 SER C 75 REMARK 465 ASN C 76 REMARK 465 THR C 77 REMARK 465 ILE C 78 REMARK 465 GLN C 79 REMARK 465 SER C 80 REMARK 465 ILE C 81 REMARK 465 ILE C 82 REMARK 465 ALA C 83 REMARK 465 ILE C 84 REMARK 465 ILE C 85 REMARK 465 ARG C 86 REMARK 465 ALA C 87 REMARK 465 MET C 88 REMARK 465 GLY C 89 REMARK 465 ARG C 90 REMARK 465 LEU C 91 REMARK 465 LYS C 92 REMARK 465 ILE C 93 REMARK 465 ASP C 94 REMARK 465 PHE C 95 REMARK 465 GLY C 96 REMARK 465 ASP C 97 REMARK 465 SER C 98 REMARK 465 ALA C 99 REMARK 465 ARG C 100 REMARK 465 ALA C 101 REMARK 465 ASP C 102 REMARK 465 ASP C 103 REMARK 465 ALA C 104 REMARK 465 ARG C 105 REMARK 465 GLN C 106 REMARK 465 LEU C 107 REMARK 465 PHE C 108 REMARK 465 VAL C 109 REMARK 465 LEU C 110 REMARK 465 ALA C 111 REMARK 465 GLY C 112 REMARK 465 ALA C 113 REMARK 465 ALA C 114 REMARK 465 GLU C 115 REMARK 465 GLU C 116 REMARK 465 GLY C 117 REMARK 465 PHE C 118 REMARK 465 MET C 119 REMARK 465 THR C 120 REMARK 465 ALA C 121 REMARK 465 GLU C 122 REMARK 465 LEU C 123 REMARK 465 ALA C 124 REMARK 465 GLY C 125 REMARK 465 VAL C 126 REMARK 465 ILE C 127 REMARK 465 LYS C 128 REMARK 465 ARG C 129 REMARK 465 LEU C 130 REMARK 465 TRP C 131 REMARK 465 LYS C 132 REMARK 465 ASP C 133 REMARK 465 SER C 134 REMARK 465 GLY C 135 REMARK 465 VAL C 136 REMARK 465 GLN C 137 REMARK 465 ALA C 138 REMARK 465 CYS C 139 REMARK 465 PHE C 140 REMARK 465 ASN C 141 REMARK 465 ARG C 142 REMARK 465 SER C 143 REMARK 465 ARG C 144 REMARK 465 GLU C 145 REMARK 465 TYR C 146 REMARK 465 GLN C 147 REMARK 465 LEU C 148 REMARK 465 ASN C 149 REMARK 465 ASP C 150 REMARK 465 SER C 151 REMARK 465 ALA C 152 REMARK 465 ALA C 153 REMARK 465 TYR C 154 REMARK 465 TYR C 155 REMARK 465 LEU C 156 REMARK 465 ASN C 157 REMARK 465 ASP C 158 REMARK 465 LEU C 159 REMARK 465 ASP C 160 REMARK 465 ARG C 161 REMARK 465 ILE C 162 REMARK 465 ALA C 163 REMARK 465 GLN C 164 REMARK 465 PRO C 165 REMARK 465 ASN C 166 REMARK 465 TYR C 167 REMARK 465 ILE C 168 REMARK 465 PRO C 169 REMARK 465 THR C 170 REMARK 465 GLN C 171 REMARK 465 GLN C 172 REMARK 465 ASP C 173 REMARK 465 VAL C 174 REMARK 465 LEU C 175 REMARK 465 ARG C 176 REMARK 465 THR C 177 REMARK 465 ARG C 178 REMARK 465 VAL C 179 REMARK 465 LYS C 180 REMARK 465 THR C 181 REMARK 465 LEU C 234 REMARK 465 ALA C 235 REMARK 465 GLU C 236 REMARK 465 ASP C 237 REMARK 465 GLU C 238 REMARK 465 GLU C 239 REMARK 465 MET C 240 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 LYS A 15 CG CD CE NZ REMARK 470 LYS A 16 CG CD CE NZ REMARK 470 ASN A 17 CG OD1 ND2 REMARK 470 ARG A 22 CG CD NE CZ NH1 NH2 REMARK 470 ASP A 23 CG OD1 OD2 REMARK 470 LYS A 28 CG CD CE NZ REMARK 470 LEU A 36 CG CD1 CD2 REMARK 470 PHE A 40 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LEU A 43 CG CD1 CD2 REMARK 470 LEU A 56 CG CD1 CD2 REMARK 470 LYS A 57 CG CD CE NZ REMARK 470 LYS A 164 CG CD CE NZ REMARK 470 LYS A 165 CG CD CE NZ REMARK 470 LYS A 166 CG CD CE NZ REMARK 470 LEU A 168 CG CD1 CD2 REMARK 470 ILE A 169 CG1 CG2 CD1 REMARK 470 GLN A 170 CG CD OE1 NE2 REMARK 470 ASN A 171 CG OD1 ND2 REMARK 470 THR A 173 OG1 CG2 REMARK 470 LEU A 258 CG CD1 CD2 REMARK 470 ASN A 265 CG OD1 ND2 REMARK 470 GLU A 267 CG CD OE1 OE2 REMARK 470 ASP C 193 CG OD1 OD2 REMARK 470 ALA C 203 CB REMARK 470 ASP C 229 CG OD1 OD2 REMARK 470 LEU C 232 CG CD1 CD2 REMARK 470 VAL C 233 CG1 CG2 REMARK 470 ASP C 272 CG OD1 OD2 REMARK 470 LYS C 280 CG CD CE NZ REMARK 470 GLU C 289 CG CD OE1 OE2 REMARK 470 GLU C 297 CG CD OE1 OE2 REMARK 470 SER C 326 OG REMARK 470 THR C 327 OG1 CG2 REMARK 470 PHE C 354 C O REMARK 470 ARG B 8 CG CD NE CZ NH1 NH2 REMARK 470 ARG B 214 CG CD NE CZ NH1 NH2 REMARK 470 ASP B 312 CG OD1 OD2 REMARK 470 GLU G 63 C O REMARK 470 SER S 17 OG REMARK 470 GLU S 42 CG CD OE1 OE2 REMARK 470 SER S 52 OG REMARK 470 ASP S 73 CG OD1 OD2 REMARK 470 GLU S 89 CG CD OE1 OE2 REMARK 470 SER S 121 OG REMARK 470 SER S 124 OG REMARK 470 GLU S 141 CG CD OE1 OE2 REMARK 470 LEU S 207 CG CD1 CD2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 OG SER B 331 OD1 ASP B 333 2.10 REMARK 500 OG SER B 245 OD1 ASP B 247 2.16 REMARK 500 OG SER B 161 OD1 ASP B 163 2.17 REMARK 500 O LEU A 280 OG1 THR A 283 2.19 REMARK 500 REMARK 500 REMARK: NULL 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 ASP A 24 -63.49 64.42 REMARK 500 PHE A 54 22.50 48.36 REMARK 500 ASP A 85 -63.70 -141.55 REMARK 500 TYR A 86 16.17 -68.76 REMARK 500 TYR A 87 -50.23 -121.90 REMARK 500 ARG A 90 -92.08 48.37 REMARK 500 SER A 91 111.22 -160.27 REMARK 500 THR A 173 18.20 55.96 REMARK 500 GLU C 43 46.07 39.14 REMARK 500 PHE C 215 34.41 -99.75 REMARK 500 ASP C 231 50.98 -95.81 REMARK 500 LYS C 314 49.05 -81.81 REMARK 500 HIS G 44 51.42 -92.63 REMARK 500 SER G 57 -31.05 -131.36 REMARK 500 GLN S 39 -169.69 -124.15 REMARK 500 VAL S 48 -57.41 -125.35 REMARK 500 SER S 142 137.10 72.38 REMARK 500 MET S 180 -12.42 73.22 REMARK 500 SER S 181 -37.55 -130.68 REMARK 500 ASP S 189 4.10 -68.53 REMARK 500 SER S 196 -74.18 -108.11 REMARK 500 THR S 198 -3.51 -140.60 REMARK 500 GLU S 208 -150.57 53.08 REMARK 500 PRO S 224 75.25 -69.26 REMARK 500 GLU S 234 -148.63 57.36 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-61502 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF THE NIACIN-HCAR3-GI COMPLEX DBREF 9JID A 1 387 UNP P49019 HCAR3_HUMAN 1 387 DBREF 9JID C 4 354 UNP P63096 GNAI1_HUMAN 4 354 DBREF 9JID B 4 340 UNP P62873 GBB1_HUMAN 4 340 DBREF 9JID G 8 63 UNP P59768 GBG2_HUMAN 8 63 DBREF 9JID S 1 235 PDB 9JID 9JID 1 235 SEQADV 9JID ALA C 203 UNP P63096 GLY 203 ENGINEERED MUTATION SEQADV 9JID SER C 326 UNP P63096 ALA 326 ENGINEERED MUTATION SEQRES 1 A 387 MET ASN ARG HIS HIS LEU GLN ASP HIS PHE LEU GLU ILE SEQRES 2 A 387 ASP LYS LYS ASN CYS CYS VAL PHE ARG ASP ASP PHE ILE SEQRES 3 A 387 ALA LYS VAL LEU PRO PRO VAL LEU GLY LEU GLU PHE ILE SEQRES 4 A 387 PHE GLY LEU LEU GLY ASN GLY LEU ALA LEU TRP ILE PHE SEQRES 5 A 387 CYS PHE HIS LEU LYS SER TRP LYS SER SER ARG ILE PHE SEQRES 6 A 387 LEU PHE ASN LEU ALA VAL ALA ASP PHE LEU LEU ILE ILE SEQRES 7 A 387 CYS LEU PRO PHE VAL MET ASP TYR TYR VAL ARG ARG SER SEQRES 8 A 387 ASP TRP LYS PHE GLY ASP ILE PRO CYS ARG LEU VAL LEU SEQRES 9 A 387 PHE MET PHE ALA MET ASN ARG GLN GLY SER ILE ILE PHE SEQRES 10 A 387 LEU THR VAL VAL ALA VAL ASP ARG TYR PHE ARG VAL VAL SEQRES 11 A 387 HIS PRO HIS HIS ALA LEU ASN LYS ILE SER ASN TRP THR SEQRES 12 A 387 ALA ALA ILE ILE SER CYS LEU LEU TRP GLY ILE THR VAL SEQRES 13 A 387 GLY LEU THR VAL HIS LEU LEU LYS LYS LYS LEU LEU ILE SEQRES 14 A 387 GLN ASN GLY THR ALA ASN VAL CYS ILE SER PHE SER ILE SEQRES 15 A 387 CYS HIS THR PHE ARG TRP HIS GLU ALA MET PHE LEU LEU SEQRES 16 A 387 GLU PHE PHE LEU PRO LEU GLY ILE ILE LEU PHE CYS SER SEQRES 17 A 387 ALA ARG ILE ILE TRP SER LEU ARG GLN ARG GLN MET ASP SEQRES 18 A 387 ARG HIS ALA LYS ILE LYS ARG ALA ILE THR PHE ILE MET SEQRES 19 A 387 VAL VAL ALA ILE VAL PHE VAL ILE CYS PHE LEU PRO SER SEQRES 20 A 387 VAL VAL VAL ARG ILE HIS ILE PHE TRP LEU LEU HIS THR SEQRES 21 A 387 SER GLY THR GLN ASN CYS GLU VAL TYR ARG SER VAL ASP SEQRES 22 A 387 LEU ALA PHE PHE ILE THR LEU SER PHE THR TYR MET ASN SEQRES 23 A 387 SER MET LEU ASP PRO VAL VAL TYR TYR PHE SER SER PRO SEQRES 24 A 387 SER PHE PRO ASN PHE PHE SER THR LEU ILE ASN ARG CYS SEQRES 25 A 387 LEU GLN ARG LYS ILE THR GLY GLU PRO ASP ASN ASN ARG SEQRES 26 A 387 SER THR SER VAL GLU LEU THR GLY ASP PRO ASN LYS THR SEQRES 27 A 387 ARG GLY ALA PRO GLU ALA LEU ILE ALA ASN SER GLY GLU SEQRES 28 A 387 PRO TRP SER PRO SER TYR LEU GLY PRO THR SER ASN ASN SEQRES 29 A 387 HIS SER LYS LYS GLY HIS CYS HIS GLN GLU PRO ALA SER SEQRES 30 A 387 LEU GLU LYS GLN LEU GLY CYS CYS ILE GLU SEQRES 1 C 351 THR LEU SER ALA GLU ASP LYS ALA ALA VAL GLU ARG SER SEQRES 2 C 351 LYS MET ILE ASP ARG ASN LEU ARG GLU ASP GLY GLU LYS SEQRES 3 C 351 ALA ALA ARG GLU VAL LYS LEU LEU LEU LEU GLY ALA GLY SEQRES 4 C 351 GLU SER GLY LYS SER THR ILE VAL LYS GLN MET LYS ILE SEQRES 5 C 351 ILE HIS GLU ALA GLY TYR SER GLU GLU GLU CYS LYS GLN SEQRES 6 C 351 TYR LYS ALA VAL VAL TYR SER ASN THR ILE GLN SER ILE SEQRES 7 C 351 ILE ALA ILE ILE ARG ALA MET GLY ARG LEU LYS ILE ASP SEQRES 8 C 351 PHE GLY ASP SER ALA ARG ALA ASP ASP ALA ARG GLN LEU SEQRES 9 C 351 PHE VAL LEU ALA GLY ALA ALA GLU GLU GLY PHE MET THR SEQRES 10 C 351 ALA GLU LEU ALA GLY VAL ILE LYS ARG LEU TRP LYS ASP SEQRES 11 C 351 SER GLY VAL GLN ALA CYS PHE ASN ARG SER ARG GLU TYR SEQRES 12 C 351 GLN LEU ASN ASP SER ALA ALA TYR TYR LEU ASN ASP LEU SEQRES 13 C 351 ASP ARG ILE ALA GLN PRO ASN TYR ILE PRO THR GLN GLN SEQRES 14 C 351 ASP VAL LEU ARG THR ARG VAL LYS THR THR GLY ILE VAL SEQRES 15 C 351 GLU THR HIS PHE THR PHE LYS ASP LEU HIS PHE LYS MET SEQRES 16 C 351 PHE ASP VAL GLY ALA GLN ARG SER GLU ARG LYS LYS TRP SEQRES 17 C 351 ILE HIS CYS PHE GLU GLY VAL THR ALA ILE ILE PHE CYS SEQRES 18 C 351 VAL ALA LEU SER ASP TYR ASP LEU VAL LEU ALA GLU ASP SEQRES 19 C 351 GLU GLU MET ASN ARG MET HIS GLU SER MET LYS LEU PHE SEQRES 20 C 351 ASP SER ILE CYS ASN ASN LYS TRP PHE THR ASP THR SER SEQRES 21 C 351 ILE ILE LEU PHE LEU ASN LYS LYS ASP LEU PHE GLU GLU SEQRES 22 C 351 LYS ILE LYS LYS SER PRO LEU THR ILE CYS TYR PRO GLU SEQRES 23 C 351 TYR ALA GLY SER ASN THR TYR GLU GLU ALA ALA ALA TYR SEQRES 24 C 351 ILE GLN CYS GLN PHE GLU ASP LEU ASN LYS ARG LYS ASP SEQRES 25 C 351 THR LYS GLU ILE TYR THR HIS PHE THR CYS SER THR ASP SEQRES 26 C 351 THR LYS ASN VAL GLN PHE VAL PHE ASP ALA VAL THR ASP SEQRES 27 C 351 VAL ILE ILE LYS ASN ASN LEU LYS ASP CYS GLY LEU PHE SEQRES 1 B 337 LEU ASP GLN LEU ARG GLN GLU ALA GLU GLN LEU LYS ASN SEQRES 2 B 337 GLN ILE ARG ASP ALA ARG LYS ALA CYS ALA ASP ALA THR SEQRES 3 B 337 LEU SER GLN ILE THR ASN ASN ILE ASP PRO VAL GLY ARG SEQRES 4 B 337 ILE GLN MET ARG THR ARG ARG THR LEU ARG GLY HIS LEU SEQRES 5 B 337 ALA LYS ILE TYR ALA MET HIS TRP GLY THR ASP SER ARG SEQRES 6 B 337 LEU LEU VAL SER ALA SER GLN ASP GLY LYS LEU ILE ILE SEQRES 7 B 337 TRP ASP SER TYR THR THR ASN LYS VAL HIS ALA ILE PRO SEQRES 8 B 337 LEU ARG SER SER TRP VAL MET THR CYS ALA TYR ALA PRO SEQRES 9 B 337 SER GLY ASN TYR VAL ALA CYS GLY GLY LEU ASP ASN ILE SEQRES 10 B 337 CYS SER ILE TYR ASN LEU LYS THR ARG GLU GLY ASN VAL SEQRES 11 B 337 ARG VAL SER ARG GLU LEU ALA GLY HIS THR GLY TYR LEU SEQRES 12 B 337 SER CYS CYS ARG PHE LEU ASP ASP ASN GLN ILE VAL THR SEQRES 13 B 337 SER SER GLY ASP THR THR CYS ALA LEU TRP ASP ILE GLU SEQRES 14 B 337 THR GLY GLN GLN THR THR THR PHE THR GLY HIS THR GLY SEQRES 15 B 337 ASP VAL MET SER LEU SER LEU ALA PRO ASP THR ARG LEU SEQRES 16 B 337 PHE VAL SER GLY ALA CYS ASP ALA SER ALA LYS LEU TRP SEQRES 17 B 337 ASP VAL ARG GLU GLY MET CYS ARG GLN THR PHE THR GLY SEQRES 18 B 337 HIS GLU SER ASP ILE ASN ALA ILE CYS PHE PHE PRO ASN SEQRES 19 B 337 GLY ASN ALA PHE ALA THR GLY SER ASP ASP ALA THR CYS SEQRES 20 B 337 ARG LEU PHE ASP LEU ARG ALA ASP GLN GLU LEU MET THR SEQRES 21 B 337 TYR SER HIS ASP ASN ILE ILE CYS GLY ILE THR SER VAL SEQRES 22 B 337 SER PHE SER LYS SER GLY ARG LEU LEU LEU ALA GLY TYR SEQRES 23 B 337 ASP ASP PHE ASN CYS ASN VAL TRP ASP ALA LEU LYS ALA SEQRES 24 B 337 ASP ARG ALA GLY VAL LEU ALA GLY HIS ASP ASN ARG VAL SEQRES 25 B 337 SER CYS LEU GLY VAL THR ASP ASP GLY MET ALA VAL ALA SEQRES 26 B 337 THR GLY SER TRP ASP SER PHE LEU LYS ILE TRP ASN SEQRES 1 G 56 SER ILE ALA GLN ALA ARG LYS LEU VAL GLU GLN LEU LYS SEQRES 2 G 56 MET GLU ALA ASN ILE ASP ARG ILE LYS VAL SER LYS ALA SEQRES 3 G 56 ALA ALA ASP LEU MET ALA TYR CYS GLU ALA HIS ALA LYS SEQRES 4 G 56 GLU ASP PRO LEU LEU THR PRO VAL PRO ALA SER GLU ASN SEQRES 5 G 56 PRO PHE ARG GLU SEQRES 1 S 233 ASP VAL GLN LEU VAL GLU SER GLY GLY GLY LEU VAL GLN SEQRES 2 S 233 PRO GLY GLY SER ARG LYS LEU SER CYS SER ALA SER GLY SEQRES 3 S 233 PHE ALA PHE SER SER PHE GLY MET HIS TRP VAL ARG GLN SEQRES 4 S 233 ALA PRO GLU LYS GLY LEU GLU TRP VAL ALA TYR ILE SER SEQRES 5 S 233 SER GLY SER GLY THR ILE TYR TYR ALA ASP THR VAL LYS SEQRES 6 S 233 GLY ARG PHE THR ILE SER ARG ASP ASP PRO LYS ASN THR SEQRES 7 S 233 LEU PHE LEU GLN MET THR SER LEU ARG SER GLU ASP THR SEQRES 8 S 233 ALA MET TYR TYR CYS VAL ARG SER ILE TYR TYR TYR GLY SEQRES 9 S 233 SER SER PRO PHE ASP PHE TRP GLY GLN GLY THR THR LEU SEQRES 10 S 233 THR VAL SER SER SER ASP ILE VAL MET THR GLN ALA THR SEQRES 11 S 233 SER SER VAL PRO VAL THR PRO GLY GLU SER VAL SER ILE SEQRES 12 S 233 SER CYS ARG SER SER LYS SER LEU LEU HIS SER ASN GLY SEQRES 13 S 233 ASN THR TYR LEU TYR TRP PHE LEU GLN ARG PRO GLY GLN SEQRES 14 S 233 SER PRO GLN LEU LEU ILE TYR ARG MET SER ASN LEU ALA SEQRES 15 S 233 SER GLY VAL PRO ASP ARG PHE SER GLY SER GLY SER GLY SEQRES 16 S 233 THR ALA PHE THR LEU THR ILE SER ARG LEU GLU ALA GLU SEQRES 17 S 233 ASP VAL GLY VAL TYR TYR CYS MET GLN HIS LEU GLU TYR SEQRES 18 S 233 PRO LEU THR PHE GLY ALA GLY THR LYS LEU GLU LEU HET NIO A 401 9 HETNAM NIO NICOTINIC ACID FORMUL 6 NIO C6 H5 N O2 HELIX 1 AA1 ASP A 24 CYS A 53 1 30 HELIX 2 AA2 LYS A 60 CYS A 79 1 20 HELIX 3 AA3 LEU A 80 MET A 84 5 5 HELIX 4 AA4 GLY A 96 VAL A 130 1 35 HELIX 5 AA5 HIS A 134 LYS A 138 5 5 HELIX 6 AA6 SER A 140 VAL A 160 1 21 HELIX 7 AA7 VAL A 160 LYS A 165 1 6 HELIX 8 AA8 ARG A 187 ARG A 218 1 32 HELIX 9 AA9 HIS A 223 SER A 261 1 39 HELIX 10 AB1 ASN A 265 ARG A 270 5 6 HELIX 11 AB2 SER A 271 TYR A 295 1 25 HELIX 12 AB3 SER C 6 ALA C 31 1 26 HELIX 13 AB4 GLY C 45 MET C 53 1 9 HELIX 14 AB5 GLU C 207 GLU C 216 5 10 HELIX 15 AB6 SER C 228 TYR C 230 5 3 HELIX 16 AB7 ARG C 242 ASN C 255 1 14 HELIX 17 AB8 LYS C 270 SER C 281 1 12 HELIX 18 AB9 THR C 295 ALA C 301 1 7 HELIX 19 AC1 ILE C 303 LEU C 310 1 8 HELIX 20 AC2 LYS C 330 CYS C 351 1 22 HELIX 21 AC3 ASP B 5 CYS B 25 1 21 HELIX 22 AC4 THR B 29 THR B 34 1 6 HELIX 23 AC5 ILE G 9 ASN G 24 1 16 HELIX 24 AC6 LYS G 29 HIS G 44 1 16 HELIX 25 AC7 ALA S 28 PHE S 32 5 5 HELIX 26 AC8 ARG S 87 THR S 91 5 5 SHEET 1 AA1 6 VAL C 185 THR C 190 0 SHEET 2 AA1 6 HIS C 195 ASP C 200 -1 O PHE C 196 N PHE C 189 SHEET 3 AA1 6 VAL C 34 GLY C 40 1 N LEU C 36 O LYS C 197 SHEET 4 AA1 6 ALA C 220 ALA C 226 1 O ILE C 222 N LEU C 37 SHEET 5 AA1 6 SER C 263 ASN C 269 1 O ILE C 265 N ILE C 221 SHEET 6 AA1 6 ILE C 319 HIS C 322 1 O TYR C 320 N LEU C 266 SHEET 1 AA2 4 THR B 47 LEU B 51 0 SHEET 2 AA2 4 LEU B 336 TRP B 339 -1 O LEU B 336 N LEU B 51 SHEET 3 AA2 4 VAL B 327 SER B 331 -1 N VAL B 327 O TRP B 339 SHEET 4 AA2 4 VAL B 315 VAL B 320 -1 N GLY B 319 O ALA B 328 SHEET 1 AA3 4 ILE B 58 TRP B 63 0 SHEET 2 AA3 4 LEU B 69 SER B 74 -1 O VAL B 71 N HIS B 62 SHEET 3 AA3 4 LYS B 78 ASP B 83 -1 O TRP B 82 N LEU B 70 SHEET 4 AA3 4 ASN B 88 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 CYS B 121 ASN B 125 -1 O TYR B 124 N VAL B 112 SHEET 4 AA4 4 ARG B 134 LEU B 139 -1 O LEU B 139 N CYS B 121 SHEET 1 AA5 4 LEU B 146 PHE B 151 0 SHEET 2 AA5 4 GLN B 156 SER B 161 -1 O SER B 160 N SER B 147 SHEET 3 AA5 4 CYS B 166 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 PHE B 222 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 TYR B 264 N CYS B 250 SHEET 1 AA8 4 ILE B 273 PHE B 278 0 SHEET 2 AA8 4 LEU B 284 TYR B 289 -1 O GLY B 288 N THR B 274 SHEET 3 AA8 4 CYS B 294 ASP B 298 -1 O TRP B 297 N LEU B 285 SHEET 4 AA8 4 ARG B 304 VAL B 307 -1 O ALA B 305 N VAL B 296 SHEET 1 AA9 4 GLN S 3 SER S 7 0 SHEET 2 AA9 4 SER S 17 SER S 25 -1 O SER S 23 N VAL S 5 SHEET 3 AA9 4 THR S 78 THR S 84 -1 O MET S 83 N ARG S 18 SHEET 4 AA9 4 PHE S 68 ASP S 73 -1 N ASP S 73 O THR S 78 SHEET 1 AB1 6 GLY S 10 VAL S 12 0 SHEET 2 AB1 6 THR S 116 VAL S 119 1 O THR S 118 N VAL S 12 SHEET 3 AB1 6 ALA S 92 SER S 99 -1 N ALA S 92 O LEU S 117 SHEET 4 AB1 6 GLY S 33 ARG S 38 -1 N VAL S 37 O TYR S 95 SHEET 5 AB1 6 GLU S 46 ILE S 51 -1 O GLU S 46 N ARG S 38 SHEET 6 AB1 6 ILE S 58 TYR S 60 -1 O TYR S 59 N TYR S 50 SHEET 1 AB2 4 GLY S 10 VAL S 12 0 SHEET 2 AB2 4 THR S 116 VAL S 119 1 O THR S 118 N VAL S 12 SHEET 3 AB2 4 ALA S 92 SER S 99 -1 N ALA S 92 O LEU S 117 SHEET 4 AB2 4 PHE S 110 TRP S 111 -1 O PHE S 110 N ARG S 98 SHEET 1 AB3 3 VAL S 143 ARG S 148 0 SHEET 2 AB3 3 ALA S 199 ILE S 204 -1 O LEU S 202 N ILE S 145 SHEET 3 AB3 3 PHE S 191 GLY S 195 -1 N SER S 194 O THR S 201 SHEET 1 AB4 5 ASN S 182 LEU S 183 0 SHEET 2 AB4 5 PRO S 173 TYR S 178 -1 N TYR S 178 O ASN S 182 SHEET 3 AB4 5 LEU S 162 GLN S 167 -1 N LEU S 166 O GLN S 174 SHEET 4 AB4 5 CYS S 217 GLN S 219 -1 O MET S 218 N TYR S 163 SHEET 5 AB4 5 THR S 226 PHE S 227 -1 O THR S 226 N GLN S 219 SSBOND 1 CYS A 18 CYS A 183 1555 1555 2.03 SSBOND 2 CYS A 19 CYS A 266 1555 1555 2.03 SSBOND 3 CYS A 100 CYS A 177 1555 1555 2.03 SSBOND 4 CYS S 22 CYS S 96 1555 1555 2.04 SSBOND 5 CYS S 147 CYS S 217 1555 1555 2.04 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 TER 2289 ASN A 303 TER 4000 PHE C 354 TER 6578 ASN B 340 TER 7010 GLU G 63 TER 8780 LEU S 235 HETATM 8781 N NIO A 401 125.823 143.827 98.406 1.00 74.42 N HETATM 8782 C1 NIO A 401 126.632 143.326 99.315 1.00 74.42 C HETATM 8783 C2 NIO A 401 127.815 143.967 99.627 1.00 74.42 C HETATM 8784 C3 NIO A 401 128.141 145.144 98.983 1.00 74.42 C HETATM 8785 C4 NIO A 401 127.322 145.597 98.030 1.00 74.42 C HETATM 8786 C5 NIO A 401 126.146 144.929 97.754 1.00 74.42 C HETATM 8787 C6 NIO A 401 128.746 143.400 100.689 1.00 74.42 C HETATM 8788 O1 NIO A 401 128.427 142.358 101.309 1.00 74.42 O HETATM 8789 O2 NIO A 401 129.835 143.972 100.940 1.00 74.42 O CONECT 21 1294 CONECT 27 1985 CONECT 665 1249 CONECT 1249 665 CONECT 1294 21 CONECT 1985 27 CONECT 7160 7734 CONECT 7734 7160 CONECT 8092 8636 CONECT 8636 8092 CONECT 8781 8782 8786 CONECT 8782 8781 8783 CONECT 8783 8782 8784 8787 CONECT 8784 8783 8785 CONECT 8785 8784 8786 CONECT 8786 8781 8785 CONECT 8787 8783 8788 8789 CONECT 8788 8787 CONECT 8789 8787 MASTER 447 0 1 26 56 0 0 6 8784 5 19 106 END