HEADER MEMBRANE PROTEIN 19-APR-22 7XK2 TITLE CRYO-EM STRUCTURE OF HUMAN NIACIN RECEPTOR HCA2-GI PROTEIN COMPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I) SUBUNIT ALPHA-1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ADENYLATE CYCLASE-INHIBITING G ALPHA PROTEIN; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I)/G(S)/G(T) SUBUNIT COMPND 8 BETA-1; COMPND 9 CHAIN: B; COMPND 10 SYNONYM: TRANSDUCIN BETA CHAIN 1; COMPND 11 ENGINEERED: YES; COMPND 12 MOL_ID: 3; COMPND 13 MOLECULE: HYDROXYCARBOXYLIC ACID RECEPTOR 2; COMPND 14 CHAIN: R; COMPND 15 SYNONYM: G-PROTEIN COUPLED RECEPTOR 109A,G-PROTEIN COUPLED RECEPTOR COMPND 16 HM74A,NIACIN RECEPTOR 1,NICOTINIC ACID RECEPTOR; COMPND 17 ENGINEERED: YES; COMPND 18 MOL_ID: 4; COMPND 19 MOLECULE: SCFV16; COMPND 20 CHAIN: S; COMPND 21 ENGINEERED: YES; COMPND 22 MOL_ID: 5; COMPND 23 MOLECULE: GUANINE NUCLEOTIDE-BINDING PROTEIN G(I)/G(S)/G(O) SUBUNIT COMPND 24 GAMMA-2; COMPND 25 CHAIN: C; COMPND 26 SYNONYM: G GAMMA-I; COMPND 27 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: GNAI1; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 8 EXPRESSION_SYSTEM_CELL_LINE: HEK293; SOURCE 9 MOL_ID: 2; SOURCE 10 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 11 ORGANISM_COMMON: HUMAN; SOURCE 12 ORGANISM_TAXID: 9606; SOURCE 13 GENE: GNB1; SOURCE 14 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 15 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 16 EXPRESSION_SYSTEM_CELL_LINE: HEK293; SOURCE 17 MOL_ID: 3; SOURCE 18 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 19 ORGANISM_COMMON: HUMAN; SOURCE 20 ORGANISM_TAXID: 9606; SOURCE 21 GENE: HCAR2; SOURCE 22 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 23 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 24 EXPRESSION_SYSTEM_CELL_LINE: HEK293; SOURCE 25 MOL_ID: 4; SOURCE 26 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 27 ORGANISM_TAXID: 9606; SOURCE 28 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 29 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 30 EXPRESSION_SYSTEM_CELL_LINE: HEK293; SOURCE 31 MOL_ID: 5; SOURCE 32 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 33 ORGANISM_COMMON: HUMAN; SOURCE 34 ORGANISM_TAXID: 9606; SOURCE 35 GENE: GNG2; SOURCE 36 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 37 EXPRESSION_SYSTEM_TAXID: 9606; SOURCE 38 EXPRESSION_SYSTEM_CELL_LINE: HEK293 KEYWDS NIACIN RECEPTOR, HYDROXYCARBOXYLIC ACID RECEPTOR 2, HCA2, GI COMPLEX, KEYWDS 2 MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR Y.YANG,H.J.KANG,R.G.GAO,J.J.WANG,G.W.HAN,J.F.DIBERTO,L.J.WU,J.H.TONG, AUTHOR 2 L.QU,Y.R.WU,R.PILESKI,X.M.LI,X.C.ZHANG,S.W.ZHAO,T.KENAKIN,Q.WANG, AUTHOR 3 R.C.STEVENS,W.PENG,B.L.ROTH,Z.H.RAO,Z.J.LIU REVDAT 3 06-DEC-23 7XK2 1 JRNL REVDAT 2 12-APR-23 7XK2 1 JRNL REVDAT 1 22-FEB-23 7XK2 0 JRNL AUTH Y.YANG,H.J.KANG,R.GAO,J.WANG,G.W.HAN,J.F.DIBERTO,L.WU, JRNL AUTH 2 J.TONG,L.QU,Y.WU,R.PILESKI,X.LI,X.C.ZHANG,S.ZHAO,T.KENAKIN, JRNL AUTH 3 Q.WANG,R.C.STEVENS,W.PENG,B.L.ROTH,Z.RAO,Z.J.LIU JRNL TITL STRUCTURAL INSIGHTS INTO THE HUMAN NIACIN RECEPTOR HCA2-G I JRNL TITL 2 SIGNALLING COMPLEX. JRNL REF NAT COMMUN V. 14 1692 2023 JRNL REFN ESSN 2041-1723 JRNL PMID 36973264 JRNL DOI 10.1038/S41467-023-37177-6 REMARK 2 REMARK 2 RESOLUTION. 3.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : 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) : 3.100 REMARK 3 NUMBER OF PARTICLES : 273841 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 7XK2 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 26-APR-22. REMARK 100 THE DEPOSITION ID IS D_1300028936. 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 : NIACIN RECEPTOR HCA2-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 : 7.50 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 : FEI TITAN KRIOS REMARK 245 DETECTOR TYPE : GATAN K2 QUANTUM (4K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1000.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2000.00 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) : 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: PENTAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, R, S, 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 GLY A -1 REMARK 465 SER A 0 REMARK 465 MET A 1 REMARK 465 GLY A 2 REMARK 465 CYS A 3 REMARK 465 THR A 4 REMARK 465 ILE A 55 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 MET B 1 REMARK 465 SER B 2 REMARK 465 MET R 1 REMARK 465 ASN R 2 REMARK 465 ARG R 3 REMARK 465 HIS R 4 REMARK 465 HIS R 5 REMARK 465 LEU R 6 REMARK 465 GLN R 7 REMARK 465 ASP R 8 REMARK 465 HIS R 9 REMARK 465 PHE R 10 REMARK 465 LEU R 11 REMARK 465 GLU R 12 REMARK 465 ILE R 13 REMARK 465 ASP R 14 REMARK 465 PRO R 299 REMARK 465 SER R 300 REMARK 465 PHE R 301 REMARK 465 PRO R 302 REMARK 465 ASN R 303 REMARK 465 PHE R 304 REMARK 465 PHE R 305 REMARK 465 SER R 306 REMARK 465 THR R 307 REMARK 465 LEU R 308 REMARK 465 ILE R 309 REMARK 465 ASN R 310 REMARK 465 ARG R 311 REMARK 465 CYS R 312 REMARK 465 LEU R 313 REMARK 465 GLN R 314 REMARK 465 ARG R 315 REMARK 465 LYS R 316 REMARK 465 MET R 317 REMARK 465 THR R 318 REMARK 465 GLY R 319 REMARK 465 GLU R 320 REMARK 465 PRO R 321 REMARK 465 ASP R 322 REMARK 465 ASN R 323 REMARK 465 ASN R 324 REMARK 465 ARG R 325 REMARK 465 ASP S 1 REMARK 465 VAL S 2 REMARK 465 GLN S 3 REMARK 465 LEU S 4 REMARK 465 SER S 121 REMARK 465 GLY S 122 REMARK 465 GLY S 123 REMARK 465 GLY S 124 REMARK 465 GLY S 125 REMARK 465 SER S 126 REMARK 465 GLY S 127 REMARK 465 GLY S 128 REMARK 465 GLY S 129 REMARK 465 GLY S 130 REMARK 465 SER S 131 REMARK 465 GLY S 132 REMARK 465 GLY S 133 REMARK 465 GLY S 134 REMARK 465 GLY S 135 REMARK 465 GLU S 246 REMARK 465 LEU S 247 REMARK 465 LYS S 248 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 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 GLU B 215 CG CD OE1 OE2 REMARK 470 SER B 331 OG REMARK 470 ASP R 23 CG OD1 OD2 REMARK 470 PHE R 25 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ILE R 26 CG1 CG2 CD1 REMARK 470 LEU R 34 CG CD1 CD2 REMARK 470 LEU R 36 CG CD1 CD2 REMARK 470 GLU R 37 CG CD OE1 OE2 REMARK 470 PHE R 38 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ILE R 39 CG1 CG2 CD1 REMARK 470 LEU R 42 CG CD1 CD2 REMARK 470 LEU R 43 CG CD1 CD2 REMARK 470 ASN R 45 CG OD1 ND2 REMARK 470 LEU R 47 CG CD1 CD2 REMARK 470 LEU R 49 CG CD1 CD2 REMARK 470 ILE R 51 CG1 CG2 CD1 REMARK 470 PHE R 52 CG CD1 CD2 CE1 CE2 CZ REMARK 470 CYS R 53 SG REMARK 470 HIS R 55 CG ND1 CD2 CE1 NE2 REMARK 470 LEU R 56 CG CD1 CD2 REMARK 470 LYS R 57 CG CD CE NZ REMARK 470 SER R 58 OG REMARK 470 TRP R 59 CG CD1 CD2 NE1 CE2 CE3 CZ2 REMARK 470 TRP R 59 CZ3 CH2 REMARK 470 LYS R 60 CG CD CE NZ REMARK 470 ILE R 77 CG1 CG2 CD1 REMARK 470 ILE R 78 CG1 CG2 CD1 REMARK 470 ASP R 85 CG OD1 OD2 REMARK 470 ASN R 86 CG OD1 ND2 REMARK 470 VAL R 88 CG1 CG2 REMARK 470 LYS R 166 NZ REMARK 470 LYS S 76 CG CD CE NZ REMARK 470 GLU S 153 CG CD OE1 OE2 REMARK 470 MET S 192 CG SD CE REMARK 470 ARG S 218 CG CD NE CZ NH1 NH2 REMARK 470 GLU S 220 CG CD OE1 OE2 REMARK 470 GLU S 222 CG CD OE1 OE2 REMARK 470 ARG C 13 CG CD NE CZ NH1 NH2 REMARK 470 ASP C 48 CG OD1 OD2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP B 153 CB - CG - OD1 ANGL. DEV. = 7.7 DEGREES REMARK 500 ASP B 228 CB - CG - OD2 ANGL. DEV. = 7.8 DEGREES REMARK 500 LEU R 80 CA - CB - CG ANGL. DEV. = 14.8 DEGREES 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 GLN A 52 41.21 -99.54 REMARK 500 ASP A 231 -11.89 72.99 REMARK 500 LEU A 234 -6.65 65.43 REMARK 500 ALA A 235 -54.08 -121.51 REMARK 500 MET A 240 65.98 60.30 REMARK 500 PHE A 259 52.59 -92.53 REMARK 500 LEU A 266 125.82 -38.11 REMARK 500 TYR A 287 78.08 53.13 REMARK 500 ARG B 52 40.11 -102.92 REMARK 500 GLN B 75 47.60 -89.92 REMARK 500 ALA B 203 -169.97 -118.96 REMARK 500 SER B 281 -1.23 69.33 REMARK 500 ASP B 291 51.24 -92.74 REMARK 500 ALA B 305 -159.31 -83.82 REMARK 500 TYR R 87 42.24 -103.42 REMARK 500 ARG R 89 -71.23 -87.57 REMARK 500 ARG R 90 -58.55 -123.95 REMARK 500 TRP R 91 89.59 -158.61 REMARK 500 ALA R 135 -0.41 66.21 REMARK 500 LYS R 138 49.81 -92.03 REMARK 500 SER R 179 50.42 -94.23 REMARK 500 ALA R 224 -170.00 -126.36 REMARK 500 PHE R 296 30.36 -94.94 REMARK 500 VAL S 48 -56.94 -120.47 REMARK 500 TYR S 102 -167.04 -125.80 REMARK 500 LEU S 165 49.89 -90.26 REMARK 500 LEU S 188 -62.55 -93.71 REMARK 500 ARG S 191 -166.49 -165.92 REMARK 500 PRO S 236 77.71 -67.86 REMARK 500 ASN C 24 34.02 -97.91 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-33241 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF HUMAN NIACIN RECEPTOR HCA2-GI PROTEIN COMPLEX DBREF 7XK2 A 1 354 UNP P63096 GNAI1_HUMAN 1 354 DBREF 7XK2 B 1 340 UNP P62873 GBB1_HUMAN 1 340 DBREF 7XK2 R 1 325 UNP Q8TDS4 HCAR2_HUMAN 1 325 DBREF 7XK2 S 1 248 PDB 7XK2 7XK2 1 248 DBREF 7XK2 C 1 71 UNP P59768 GBG2_HUMAN 1 71 SEQADV 7XK2 GLY A -1 UNP P63096 EXPRESSION TAG SEQADV 7XK2 SER A 0 UNP P63096 EXPRESSION TAG SEQRES 1 A 356 GLY SER MET GLY CYS THR LEU SER ALA GLU ASP LYS ALA SEQRES 2 A 356 ALA VAL GLU ARG SER LYS MET ILE ASP ARG ASN LEU ARG SEQRES 3 A 356 GLU ASP GLY GLU LYS ALA ALA ARG GLU VAL LYS LEU LEU SEQRES 4 A 356 LEU LEU GLY ALA GLY GLU SER GLY LYS SER THR ILE VAL SEQRES 5 A 356 LYS GLN MET LYS ILE ILE HIS GLU ALA GLY TYR SER GLU SEQRES 6 A 356 GLU GLU CYS LYS GLN TYR LYS ALA VAL VAL TYR SER ASN SEQRES 7 A 356 THR ILE GLN SER ILE ILE ALA ILE ILE ARG ALA MET GLY SEQRES 8 A 356 ARG LEU LYS ILE ASP PHE GLY ASP SER ALA ARG ALA ASP SEQRES 9 A 356 ASP ALA ARG GLN LEU PHE VAL LEU ALA GLY ALA ALA GLU SEQRES 10 A 356 GLU GLY PHE MET THR ALA GLU LEU ALA GLY VAL ILE LYS SEQRES 11 A 356 ARG LEU TRP LYS ASP SER GLY VAL GLN ALA CYS PHE ASN SEQRES 12 A 356 ARG SER ARG GLU TYR GLN LEU ASN ASP SER ALA ALA TYR SEQRES 13 A 356 TYR LEU ASN ASP LEU ASP ARG ILE ALA GLN PRO ASN TYR SEQRES 14 A 356 ILE PRO THR GLN GLN ASP VAL LEU ARG THR ARG VAL LYS SEQRES 15 A 356 THR THR GLY ILE VAL GLU THR HIS PHE THR PHE LYS ASP SEQRES 16 A 356 LEU HIS PHE LYS MET PHE ASP VAL GLY GLY GLN ARG SER SEQRES 17 A 356 GLU ARG LYS LYS TRP ILE HIS CYS PHE GLU GLY VAL THR SEQRES 18 A 356 ALA ILE ILE PHE CYS VAL ALA LEU SER ASP TYR ASP LEU SEQRES 19 A 356 VAL LEU ALA GLU ASP GLU GLU MET ASN ARG MET HIS GLU SEQRES 20 A 356 SER MET LYS LEU PHE ASP SER ILE CYS ASN ASN LYS TRP SEQRES 21 A 356 PHE THR ASP THR SER ILE ILE LEU PHE LEU ASN LYS LYS SEQRES 22 A 356 ASP LEU PHE GLU GLU LYS ILE LYS LYS SER PRO LEU THR SEQRES 23 A 356 ILE CYS TYR PRO GLU TYR ALA GLY SER ASN THR TYR GLU SEQRES 24 A 356 GLU ALA ALA ALA TYR ILE GLN CYS GLN PHE GLU ASP LEU SEQRES 25 A 356 ASN LYS ARG LYS ASP THR LYS GLU ILE TYR THR HIS PHE SEQRES 26 A 356 THR CYS ALA THR ASP THR LYS ASN VAL GLN PHE VAL PHE SEQRES 27 A 356 ASP ALA VAL THR ASP VAL ILE ILE LYS ASN ASN LEU LYS SEQRES 28 A 356 ASP CYS GLY LEU PHE SEQRES 1 B 340 MET SER GLU LEU ASP GLN LEU ARG GLN GLU ALA GLU GLN SEQRES 2 B 340 LEU LYS ASN GLN ILE ARG ASP ALA ARG LYS ALA CYS ALA SEQRES 3 B 340 ASP ALA THR LEU SER GLN ILE THR ASN ASN ILE ASP PRO SEQRES 4 B 340 VAL GLY ARG ILE GLN MET ARG THR ARG ARG THR LEU ARG SEQRES 5 B 340 GLY HIS LEU ALA LYS ILE TYR ALA MET HIS TRP GLY THR SEQRES 6 B 340 ASP SER ARG LEU LEU VAL SER ALA SER GLN ASP GLY LYS SEQRES 7 B 340 LEU ILE ILE TRP ASP SER TYR THR THR ASN LYS VAL HIS SEQRES 8 B 340 ALA ILE PRO LEU ARG SER SER TRP VAL MET THR CYS ALA SEQRES 9 B 340 TYR ALA PRO SER GLY ASN TYR VAL ALA CYS GLY GLY LEU SEQRES 10 B 340 ASP ASN ILE CYS SER ILE TYR ASN LEU LYS THR ARG GLU SEQRES 11 B 340 GLY ASN VAL ARG VAL SER ARG GLU LEU ALA GLY HIS THR SEQRES 12 B 340 GLY TYR LEU SER CYS CYS ARG PHE LEU ASP ASP ASN GLN SEQRES 13 B 340 ILE VAL THR SER SER GLY ASP THR THR CYS ALA LEU TRP SEQRES 14 B 340 ASP ILE GLU THR GLY GLN GLN THR THR THR PHE THR GLY SEQRES 15 B 340 HIS THR GLY ASP VAL MET SER LEU SER LEU ALA PRO ASP SEQRES 16 B 340 THR ARG LEU PHE VAL SER GLY ALA CYS ASP ALA SER ALA SEQRES 17 B 340 LYS LEU TRP ASP VAL ARG GLU GLY MET CYS ARG GLN THR SEQRES 18 B 340 PHE THR GLY HIS GLU SER ASP ILE ASN ALA ILE CYS PHE SEQRES 19 B 340 PHE PRO ASN GLY ASN ALA PHE ALA THR GLY SER ASP ASP SEQRES 20 B 340 ALA THR CYS ARG LEU PHE ASP LEU ARG ALA ASP GLN GLU SEQRES 21 B 340 LEU MET THR TYR SER HIS ASP ASN ILE ILE CYS GLY ILE SEQRES 22 B 340 THR SER VAL SER PHE SER LYS SER GLY ARG LEU LEU LEU SEQRES 23 B 340 ALA GLY TYR ASP ASP PHE ASN CYS ASN VAL TRP ASP ALA SEQRES 24 B 340 LEU LYS ALA ASP ARG ALA GLY VAL LEU ALA GLY HIS ASP SEQRES 25 B 340 ASN ARG VAL SER CYS LEU GLY VAL THR ASP ASP GLY MET SEQRES 26 B 340 ALA VAL ALA THR GLY SER TRP ASP SER PHE LEU LYS ILE SEQRES 27 B 340 TRP ASN SEQRES 1 R 325 MET ASN ARG HIS HIS LEU GLN ASP HIS PHE LEU GLU ILE SEQRES 2 R 325 ASP LYS LYS ASN CYS CYS VAL PHE ARG ASP ASP PHE ILE SEQRES 3 R 325 VAL LYS VAL LEU PRO PRO VAL LEU GLY LEU GLU PHE ILE SEQRES 4 R 325 PHE GLY LEU LEU GLY ASN GLY LEU ALA LEU TRP ILE PHE SEQRES 5 R 325 CYS PHE HIS LEU LYS SER TRP LYS SER SER ARG ILE PHE SEQRES 6 R 325 LEU PHE ASN LEU ALA VAL ALA ASP PHE LEU LEU ILE ILE SEQRES 7 R 325 CYS LEU PRO PHE LEU MET ASP ASN TYR VAL ARG ARG TRP SEQRES 8 R 325 ASP TRP LYS PHE GLY ASP ILE PRO CYS ARG LEU MET LEU SEQRES 9 R 325 PHE MET LEU ALA MET ASN ARG GLN GLY SER ILE ILE PHE SEQRES 10 R 325 LEU THR VAL VAL ALA VAL ASP ARG TYR PHE ARG VAL VAL SEQRES 11 R 325 HIS PRO HIS HIS ALA LEU ASN LYS ILE SER ASN ARG THR SEQRES 12 R 325 ALA ALA ILE ILE SER CYS LEU LEU TRP GLY ILE THR ILE SEQRES 13 R 325 GLY LEU THR VAL HIS LEU LEU LYS LYS LYS MET PRO ILE SEQRES 14 R 325 GLN ASN GLY GLY ALA ASN LEU CYS SER SER PHE SER ILE SEQRES 15 R 325 CYS HIS THR PHE GLN TRP HIS GLU ALA MET PHE LEU LEU SEQRES 16 R 325 GLU PHE PHE LEU PRO LEU GLY ILE ILE LEU PHE CYS SER SEQRES 17 R 325 ALA ARG ILE ILE TRP SER LEU ARG GLN ARG GLN MET ASP SEQRES 18 R 325 ARG HIS ALA LYS ILE LYS ARG ALA ILE THR PHE ILE MET SEQRES 19 R 325 VAL VAL ALA ILE VAL PHE VAL ILE CYS PHE LEU PRO SER SEQRES 20 R 325 VAL VAL VAL ARG ILE ARG ILE PHE TRP LEU LEU HIS THR SEQRES 21 R 325 SER GLY THR GLN ASN CYS GLU VAL TYR ARG SER VAL ASP SEQRES 22 R 325 LEU ALA PHE PHE ILE THR LEU SER PHE THR TYR MET ASN SEQRES 23 R 325 SER MET LEU ASP PRO VAL VAL TYR TYR PHE SER SER PRO SEQRES 24 R 325 SER PHE PRO ASN PHE PHE SER THR LEU ILE ASN ARG CYS SEQRES 25 R 325 LEU GLN ARG LYS MET THR GLY GLU PRO ASP ASN ASN ARG SEQRES 1 S 248 ASP VAL GLN LEU VAL GLU SER GLY GLY GLY LEU VAL GLN SEQRES 2 S 248 PRO GLY GLY SER ARG LYS LEU SER CYS SER ALA SER GLY SEQRES 3 S 248 PHE ALA PHE SER SER PHE GLY MET HIS TRP VAL ARG GLN SEQRES 4 S 248 ALA PRO GLU LYS GLY LEU GLU TRP VAL ALA TYR ILE SER SEQRES 5 S 248 SER GLY SER GLY THR ILE TYR TYR ALA ASP THR VAL LYS SEQRES 6 S 248 GLY ARG PHE THR ILE SER ARG ASP ASP PRO LYS ASN THR SEQRES 7 S 248 LEU PHE LEU GLN MET THR SER LEU ARG SER GLU ASP THR SEQRES 8 S 248 ALA MET TYR TYR CYS VAL ARG SER ILE TYR TYR TYR GLY SEQRES 9 S 248 SER SER PRO PHE ASP PHE TRP GLY GLN GLY THR THR LEU SEQRES 10 S 248 THR VAL SER SER GLY GLY GLY GLY SER GLY GLY GLY GLY SEQRES 11 S 248 SER GLY GLY GLY GLY SER ASP ILE VAL MET THR GLN ALA SEQRES 12 S 248 THR SER SER VAL PRO VAL THR PRO GLY GLU SER VAL SER SEQRES 13 S 248 ILE SER CYS ARG SER SER LYS SER LEU LEU HIS SER ASN SEQRES 14 S 248 GLY ASN THR TYR LEU TYR TRP PHE LEU GLN ARG PRO GLY SEQRES 15 S 248 GLN SER PRO GLN LEU LEU ILE TYR ARG MET SER ASN LEU SEQRES 16 S 248 ALA SER GLY VAL PRO ASP ARG PHE SER GLY SER GLY SER SEQRES 17 S 248 GLY THR ALA PHE THR LEU THR ILE SER ARG LEU GLU ALA SEQRES 18 S 248 GLU ASP VAL GLY VAL TYR TYR CYS MET GLN HIS LEU GLU SEQRES 19 S 248 TYR PRO LEU THR PHE GLY ALA GLY THR LYS LEU GLU LEU SEQRES 20 S 248 LYS 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 HET FI7 R 401 28 HETNAM FI7 2-[[2,2-DIMETHYL-3-[3-(5-OXIDANYLPYRIDIN-2-YL)-1,2,4- HETNAM 2 FI7 OXADIAZOL-5-YL]PROPANOYL]AMINO]CYCLOHEXENE-1- HETNAM 3 FI7 CARBOXYLIC ACID FORMUL 6 FI7 C19 H22 N4 O5 HELIX 1 AA1 SER A 6 ARG A 32 1 27 HELIX 2 AA2 GLY A 45 GLN A 52 1 8 HELIX 3 AA3 GLU A 207 GLU A 216 5 10 HELIX 4 AA4 ASN A 241 ASN A 255 1 15 HELIX 5 AA5 LEU A 273 SER A 281 1 9 HELIX 6 AA6 THR A 295 ASP A 309 1 15 HELIX 7 AA7 LYS A 330 CYS A 351 1 22 HELIX 8 AA8 LEU B 4 ALA B 26 1 23 HELIX 9 AA9 THR B 29 THR B 34 1 6 HELIX 10 AB1 LYS B 280 GLY B 282 5 3 HELIX 11 AB2 PHE R 25 CYS R 53 1 29 HELIX 12 AB3 LYS R 60 LEU R 80 1 21 HELIX 13 AB4 PRO R 81 ASN R 86 1 6 HELIX 14 AB5 ASP R 97 VAL R 130 1 34 HELIX 15 AB6 SER R 140 LEU R 158 1 19 HELIX 16 AB7 VAL R 160 LYS R 165 1 6 HELIX 17 AB8 TRP R 188 ARG R 218 1 31 HELIX 18 AB9 ILE R 226 SER R 261 1 36 HELIX 19 AC1 SER R 271 ASP R 290 1 20 HELIX 20 AC2 PRO R 291 TYR R 294 5 4 HELIX 21 AC3 ALA S 28 PHE S 32 5 5 HELIX 22 AC4 ASP S 74 LYS S 76 5 3 HELIX 23 AC5 GLU S 220 VAL S 224 5 5 HELIX 24 AC6 SER C 8 ASN C 24 1 17 HELIX 25 AC7 LYS C 29 HIS C 44 1 16 HELIX 26 AC8 ALA C 45 ASP C 48 5 4 SHEET 1 AA1 5 VAL A 185 THR A 187 0 SHEET 2 AA1 5 HIS A 195 ASP A 200 -1 O ASP A 200 N VAL A 185 SHEET 3 AA1 5 GLU A 33 GLY A 40 1 N LEU A 38 O PHE A 199 SHEET 4 AA1 5 ALA A 220 VAL A 225 1 O ILE A 222 N LEU A 39 SHEET 5 AA1 5 SER A 263 ILE A 264 1 O SER A 263 N ILE A 221 SHEET 1 AA2 6 VAL A 185 THR A 187 0 SHEET 2 AA2 6 HIS A 195 ASP A 200 -1 O ASP A 200 N VAL A 185 SHEET 3 AA2 6 GLU A 33 GLY A 40 1 N LEU A 38 O PHE A 199 SHEET 4 AA2 6 ALA A 220 VAL A 225 1 O ILE A 222 N LEU A 39 SHEET 5 AA2 6 PHE A 267 LEU A 268 1 O PHE A 267 N PHE A 223 SHEET 6 AA2 6 HIS A 322 PHE A 323 1 O HIS A 322 N LEU A 268 SHEET 1 AA3 4 ARG B 46 LEU B 51 0 SHEET 2 AA3 4 LEU B 336 ASN B 340 -1 O ILE B 338 N ARG B 49 SHEET 3 AA3 4 VAL B 327 SER B 331 -1 N THR B 329 O LYS B 337 SHEET 4 AA3 4 VAL B 315 VAL B 320 -1 N CYS B 317 O GLY B 330 SHEET 1 AA4 4 ALA B 60 TRP B 63 0 SHEET 2 AA4 4 LEU B 69 ALA B 73 -1 O VAL B 71 N HIS B 62 SHEET 3 AA4 4 LYS B 78 ASP B 83 -1 O ILE B 80 N SER B 72 SHEET 4 AA4 4 ASN B 88 PRO B 94 -1 O ASN B 88 N ASP B 83 SHEET 1 AA5 4 VAL B 100 TYR B 105 0 SHEET 2 AA5 4 TYR B 111 GLY B 116 -1 O GLY B 115 N MET B 101 SHEET 3 AA5 4 CYS B 121 ASN B 125 -1 O TYR B 124 N VAL B 112 SHEET 4 AA5 4 ARG B 134 LEU B 139 -1 O LEU B 139 N CYS B 121 SHEET 1 AA6 4 LEU B 146 PHE B 151 0 SHEET 2 AA6 4 ILE B 157 SER B 161 -1 O SER B 160 N CYS B 148 SHEET 3 AA6 4 CYS B 166 TRP B 169 -1 O TRP B 169 N ILE B 157 SHEET 4 AA6 4 GLN B 176 PHE B 180 -1 O THR B 178 N LEU B 168 SHEET 1 AA7 4 SER B 189 LEU B 192 0 SHEET 2 AA7 4 LEU B 198 GLY B 202 -1 O VAL B 200 N SER B 191 SHEET 3 AA7 4 ALA B 208 ASP B 212 -1 O TRP B 211 N PHE B 199 SHEET 4 AA7 4 CYS B 218 PHE B 222 -1 O ARG B 219 N LEU B 210 SHEET 1 AA8 4 ILE B 229 PHE B 234 0 SHEET 2 AA8 4 ALA B 240 SER B 245 -1 O GLY B 244 N ASN B 230 SHEET 3 AA8 4 CYS B 250 ASP B 254 -1 O PHE B 253 N PHE B 241 SHEET 4 AA8 4 GLN B 259 TYR B 264 -1 O LEU B 261 N LEU B 252 SHEET 1 AA9 4 ILE B 273 PHE B 278 0 SHEET 2 AA9 4 LEU B 284 TYR B 289 -1 O GLY B 288 N THR B 274 SHEET 3 AA9 4 CYS B 294 ASP B 298 -1 O TRP B 297 N LEU B 285 SHEET 4 AA9 4 ARG B 304 VAL B 307 -1 O ALA B 305 N VAL B 296 SHEET 1 AB1 4 GLU S 6 SER S 7 0 SHEET 2 AB1 4 ARG S 18 ALA S 24 -1 O SER S 23 N SER S 7 SHEET 3 AB1 4 THR S 78 MET S 83 -1 O LEU S 81 N LEU S 20 SHEET 4 AB1 4 PHE S 68 ASP S 73 -1 N ASP S 73 O THR S 78 SHEET 1 AB2 4 ILE S 58 TYR S 60 0 SHEET 2 AB2 4 ALA S 49 ILE S 51 -1 N TYR S 50 O TYR S 59 SHEET 3 AB2 4 GLY S 33 HIS S 35 -1 N MET S 34 O ILE S 51 SHEET 4 AB2 4 VAL S 97 SER S 99 -1 O VAL S 97 N HIS S 35 SHEET 1 AB3 2 ARG S 38 GLN S 39 0 SHEET 2 AB3 2 LEU S 45 GLU S 46 -1 O GLU S 46 N ARG S 38 SHEET 1 AB4 2 ALA S 92 MET S 93 0 SHEET 2 AB4 2 THR S 116 LEU S 117 -1 O LEU S 117 N ALA S 92 SHEET 1 AB5 3 SER S 156 CYS S 159 0 SHEET 2 AB5 3 PHE S 212 ILE S 216 -1 O LEU S 214 N ILE S 157 SHEET 3 AB5 3 PHE S 203 SER S 204 -1 N SER S 204 O THR S 215 SHEET 1 AB6 4 GLN S 186 ILE S 189 0 SHEET 2 AB6 4 LEU S 174 GLN S 179 -1 N LEU S 178 O GLN S 186 SHEET 3 AB6 4 VAL S 226 GLN S 231 -1 O VAL S 226 N GLN S 179 SHEET 4 AB6 4 THR S 243 LYS S 244 -1 O THR S 243 N TYR S 227 SSBOND 1 CYS R 18 CYS R 183 1555 1555 2.03 SSBOND 2 CYS R 19 CYS R 266 1555 1555 2.03 SSBOND 3 CYS R 100 CYS R 177 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