HEADER IMMUNE SYSTEM 30-OCT-25 9XGR TITLE CRYSTAL STRUCTURE OF STING-CTD COMPLEX WITH SMALL MOLECULE 09-B11 COMPND MOL_ID: 1; COMPND 2 MOLECULE: STIMULATOR OF INTERFERON GENES PROTEIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: HSTING,ENDOPLASMIC RETICULUM INTERFERON STIMULATOR,ERIS, COMPND 5 MEDIATOR OF IRF3 ACTIVATION,HMITA,TRANSMEMBRANE PROTEIN 173; COMPND 6 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: STING1, ERIS, MITA, STING, TMEM173; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS INHIBITOR, COMPLEX, IMMUNE SYSTEM EXPDTA X-RAY DIFFRACTION AUTHOR W.J.BIAN,M.LI REVDAT 1 04-NOV-26 9XGR 0 JRNL AUTH W.J.BIAN JRNL TITL CRYSTAL STRUCTURE OF STING-CTD COMPLEX WITH SMALL MOLECULE JRNL TITL 2 09-B11 JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 2.27 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.20.1_4487: ???) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.27 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 26.13 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.350 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 13060 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.230 REMARK 3 R VALUE (WORKING SET) : 0.226 REMARK 3 FREE R VALUE : 0.265 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.980 REMARK 3 FREE R VALUE TEST SET COUNT : 1303 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 26.1300 - 4.7100 1.00 1387 153 0.1989 0.2141 REMARK 3 2 4.7100 - 3.7500 1.00 1326 148 0.1887 0.2303 REMARK 3 3 3.7400 - 3.2700 1.00 1309 146 0.2323 0.2828 REMARK 3 4 3.2700 - 2.9700 1.00 1298 144 0.2680 0.2851 REMARK 3 5 2.9700 - 2.7600 1.00 1308 145 0.2752 0.3748 REMARK 3 6 2.7600 - 2.6000 1.00 1293 143 0.2847 0.3305 REMARK 3 7 2.6000 - 2.4700 1.00 1265 141 0.2919 0.4171 REMARK 3 8 2.4700 - 2.3600 1.00 1294 141 0.2978 0.3284 REMARK 3 9 2.3600 - 2.2700 1.00 1277 142 0.3532 0.4088 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.360 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 34.730 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.005 1495 REMARK 3 ANGLE : 0.802 2033 REMARK 3 CHIRALITY : 0.043 223 REMARK 3 PLANARITY : 0.008 266 REMARK 3 DIHEDRAL : 6.197 207 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 9XGR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 02-NOV-25. REMARK 100 THE DEPOSITION ID IS D_1300065345. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-OCT-25 REMARK 200 TEMPERATURE (KELVIN) : 289.15 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRF REMARK 200 BEAMLINE : BL18U1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97853 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS3 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13092 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.270 REMARK 200 RESOLUTION RANGE LOW (A) : 28.740 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 12.90 REMARK 200 R MERGE (I) : 0.05800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 24.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.27 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.33 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : 13.10 REMARK 200 R MERGE FOR SHELL (I) : 1.92400 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHENIX REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 51.50 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.54 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 14.4%PEG8000 80MM SODIUM REMARK 280 CACODYLATE/HYDROCHLORIC ACID PH6.5 160MM CALCIUM ACETATE 20% REMARK 280 GLYCEROL, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 289.15K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 X+1/2,-Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 36.57000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 36.57000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 40.87500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 46.05000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 40.87500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 46.05000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 36.57000 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 40.87500 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 46.05000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 36.57000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 40.87500 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 46.05000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL 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 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 36.57000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 CA CA A 402 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 519 LIES ON A SPECIAL POSITION. 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 139 REMARK 465 ALA A 140 REMARK 465 PRO A 141 REMARK 465 ALA A 142 REMARK 465 GLU A 143 REMARK 465 ILE A 144 REMARK 465 SER A 145 REMARK 465 ALA A 146 REMARK 465 VAL A 147 REMARK 465 CYS A 148 REMARK 465 GLU A 149 REMARK 465 LYS A 150 REMARK 465 GLY A 151 REMARK 465 ASN A 152 REMARK 465 ARG A 197 REMARK 465 ASP A 231 REMARK 465 ARG A 232 REMARK 465 ALA A 233 REMARK 465 GLY A 234 REMARK 465 ILE A 235 REMARK 465 LYS A 236 REMARK 465 ASP A 237 REMARK 465 ARG A 238 REMARK 465 GLY A 344 REMARK 465 SER A 345 REMARK 465 LEU A 346 REMARK 465 LYS A 347 REMARK 465 THR A 348 REMARK 465 SER A 349 REMARK 465 ALA A 350 REMARK 465 VAL A 351 REMARK 465 PRO A 352 REMARK 465 SER A 353 REMARK 465 THR A 354 REMARK 465 SER A 355 REMARK 465 THR A 356 REMARK 465 MET A 357 REMARK 465 SER A 358 REMARK 465 GLN A 359 REMARK 465 GLU A 360 REMARK 465 PRO A 361 REMARK 465 GLU A 362 REMARK 465 LEU A 363 REMARK 465 LEU A 364 REMARK 465 ILE A 365 REMARK 465 SER A 366 REMARK 465 GLY A 367 REMARK 465 MET A 368 REMARK 465 GLU A 369 REMARK 465 LYS A 370 REMARK 465 PRO A 371 REMARK 465 LEU A 372 REMARK 465 PRO A 373 REMARK 465 LEU A 374 REMARK 465 ARG A 375 REMARK 465 THR A 376 REMARK 465 ASP A 377 REMARK 465 PHE A 378 REMARK 465 SER A 379 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 174 CG CD OE1 OE2 REMARK 470 ARG A 180 CG CD NE CZ NH1 NH2 REMARK 470 LEU A 190 CG CD1 CD2 REMARK 470 MET A 214 CG SD CE REMARK 470 ASP A 319 CG OD1 OD2 REMARK 470 ASP A 320 CG OD1 OD2 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 NH1 ARG A 178 O HOH A 501 2.12 REMARK 500 OH TYR A 199 OE1 GLU A 336 2.17 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 OG SER A 162 O30 DH2 A 401 3555 1.96 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 TYR A 167 -58.01 -125.45 REMARK 500 ALA A 193 137.95 -170.45 REMARK 500 GLU A 304 -0.62 64.41 REMARK 500 ASP A 320 3.21 -65.01 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 523 DISTANCE = 6.32 ANGSTROMS REMARK 525 HOH A 524 DISTANCE = 6.37 ANGSTROMS REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 403 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 TYR A 274 O REMARK 620 2 PHE A 279 O 140.7 REMARK 620 N 1 DBREF 9XGR A 140 379 UNP Q86WV6 STING_HUMAN 140 379 SEQADV 9XGR MET A 139 UNP Q86WV6 INITIATING METHIONINE SEQADV 9XGR ARG A 232 UNP Q86WV6 HIS 232 VARIANT SEQRES 1 A 241 MET ALA PRO ALA GLU ILE SER ALA VAL CYS GLU LYS GLY SEQRES 2 A 241 ASN PHE ASN VAL ALA HIS GLY LEU ALA TRP SER TYR TYR SEQRES 3 A 241 ILE GLY TYR LEU ARG LEU ILE LEU PRO GLU LEU GLN ALA SEQRES 4 A 241 ARG ILE ARG THR TYR ASN GLN HIS TYR ASN ASN LEU LEU SEQRES 5 A 241 ARG GLY ALA VAL SER GLN ARG LEU TYR ILE LEU LEU PRO SEQRES 6 A 241 LEU ASP CYS GLY VAL PRO ASP ASN LEU SER MET ALA ASP SEQRES 7 A 241 PRO ASN ILE ARG PHE LEU ASP LYS LEU PRO GLN GLN THR SEQRES 8 A 241 GLY ASP ARG ALA GLY ILE LYS ASP ARG VAL TYR SER ASN SEQRES 9 A 241 SER ILE TYR GLU LEU LEU GLU ASN GLY GLN ARG ALA GLY SEQRES 10 A 241 THR CYS VAL LEU GLU TYR ALA THR PRO LEU GLN THR LEU SEQRES 11 A 241 PHE ALA MET SER GLN TYR SER GLN ALA GLY PHE SER ARG SEQRES 12 A 241 GLU ASP ARG LEU GLU GLN ALA LYS LEU PHE CYS ARG THR SEQRES 13 A 241 LEU GLU ASP ILE LEU ALA ASP ALA PRO GLU SER GLN ASN SEQRES 14 A 241 ASN CYS ARG LEU ILE ALA TYR GLN GLU PRO ALA ASP ASP SEQRES 15 A 241 SER SER PHE SER LEU SER GLN GLU VAL LEU ARG HIS LEU SEQRES 16 A 241 ARG GLN GLU GLU LYS GLU GLU VAL THR VAL GLY SER LEU SEQRES 17 A 241 LYS THR SER ALA VAL PRO SER THR SER THR MET SER GLN SEQRES 18 A 241 GLU PRO GLU LEU LEU ILE SER GLY MET GLU LYS PRO LEU SEQRES 19 A 241 PRO LEU ARG THR ASP PHE SER HET DH2 A 401 32 HET CA A 402 1 HET CA A 403 1 HETNAM DH2 (2S,3S)-2-(3,4-DIHYDROXYPHENYL)-3,5,7-TRIHYDROXY-2,3- HETNAM 2 DH2 DIHYDRO-4H-CHROMEN-4-ONE HETNAM CA CALCIUM ION HETSYN DH2 (2S,3S)-TRANS-DIHYDROQUERCETIN FORMUL 2 DH2 C15 H12 O7 FORMUL 3 CA 2(CA 2+) FORMUL 5 HOH *24(H2 O) HELIX 1 AA1 ASN A 154 TYR A 167 1 14 HELIX 2 AA2 TYR A 167 ARG A 191 1 25 HELIX 3 AA3 ASN A 211 ASP A 216 1 6 HELIX 4 AA4 THR A 263 GLN A 273 1 11 HELIX 5 AA5 TYR A 274 GLY A 278 5 5 HELIX 6 AA6 SER A 280 ASP A 301 1 22 HELIX 7 AA7 GLU A 304 CYS A 309 1 6 HELIX 8 AA8 SER A 324 VAL A 343 1 20 SHEET 1 AA1 5 ILE A 219 LYS A 224 0 SHEET 2 AA1 5 SER A 243 GLU A 249 -1 O ILE A 244 N ASP A 223 SHEET 3 AA1 5 GLN A 252 TYR A 261 -1 O ALA A 254 N LEU A 247 SHEET 4 AA1 5 TYR A 199 PRO A 203 1 N LEU A 201 O GLU A 260 SHEET 5 AA1 5 ARG A 310 TYR A 314 1 O ARG A 310 N ILE A 200 LINK O TYR A 274 CA CA A 403 1555 1555 2.74 LINK O PHE A 279 CA CA A 403 1555 1555 3.08 CRYST1 81.750 92.100 73.140 90.00 90.00 90.00 C 2 2 21 8 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 0.012232 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010858 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013672 0.00000 CONECT 886 1479 CONECT 922 1479 CONECT 1446 1447 1451 1468 CONECT 1447 1446 1448 1467 CONECT 1448 1447 1449 1452 CONECT 1449 1448 1450 1461 CONECT 1450 1449 1451 1469 CONECT 1451 1446 1450 1466 CONECT 1452 1448 1453 1462 CONECT 1453 1452 1454 1465 CONECT 1454 1453 1455 1461 CONECT 1455 1454 1456 1460 CONECT 1456 1455 1457 1470 CONECT 1457 1456 1458 1471 CONECT 1458 1457 1459 1464 CONECT 1459 1458 1460 1463 CONECT 1460 1455 1459 1472 CONECT 1461 1449 1454 CONECT 1462 1452 CONECT 1463 1459 1473 CONECT 1464 1458 1474 CONECT 1465 1453 1475 CONECT 1466 1451 1476 CONECT 1467 1447 1477 CONECT 1468 1446 CONECT 1469 1450 CONECT 1470 1456 CONECT 1471 1457 CONECT 1472 1460 CONECT 1473 1463 CONECT 1474 1464 CONECT 1475 1465 CONECT 1476 1466 CONECT 1477 1467 CONECT 1479 886 922 MASTER 380 0 3 8 5 0 0 6 1492 1 35 19 END