HEADER TRANSFERASE 11-AUG-10 3ODG TITLE CRYSTAL STRUCTURE OF XANTHOSINE PHOSPHORYLASE BOUND WITH XANTHINE FROM TITLE 2 YERSINIA PSEUDOTUBERCULOSIS COMPND MOL_ID: 1; COMPND 2 MOLECULE: XANTHOSINE PHOSPHORYLASE; COMPND 3 CHAIN: A; COMPND 4 EC: 2.4.2.-; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: YERSINIA PSEUDOTUBERCULOSIS; SOURCE 3 ORGANISM_TAXID: 633; SOURCE 4 GENE: PNDA, XAPA, YPTB1201; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: LIC-PET30A KEYWDS STRUCTURAL GENOMICS, PSI-2, PROTEIN STRUCTURE INITIATIVE, NEW YORK KEYWDS 2 SGX RESEARCH CENTER FOR STRUCTURAL GENOMICS, NYSGXRC, PURINE KEYWDS 3 NUCLEOSIDE PHOSPHORYLASE, PURINE NUCLEOSIDE BINDING, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR J.KIM,U.A.RAMAGOPAL,S.K.BURLEY,S.C.ALMO,NEW YORK SGX RESEARCH CENTER AUTHOR 2 FOR STRUCTURAL GENOMICS (NYSGXRC) REVDAT 3 06-SEP-23 3ODG 1 REMARK REVDAT 2 10-FEB-21 3ODG 1 AUTHOR REMARK REVDAT 1 25-AUG-10 3ODG 0 JRNL AUTH J.KIM,U.A.RAMAGOPAL,S.C.ALMO JRNL TITL CRYSTAL STRUCTURE OF XANTHOSINE PHOSPHORYLASE BOUND WITH JRNL TITL 2 XANTHINE FROM YERSINIA PSEUDOTUBERCULOSIS JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.64 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.5.0109 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.64 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 48.24 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.0 REMARK 3 NUMBER OF REFLECTIONS : 29504 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.157 REMARK 3 R VALUE (WORKING SET) : 0.155 REMARK 3 FREE R VALUE : 0.187 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1560 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.64 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.68 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1711 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 76.98 REMARK 3 BIN R VALUE (WORKING SET) : 0.2350 REMARK 3 BIN FREE R VALUE SET COUNT : 91 REMARK 3 BIN FREE R VALUE : 0.2640 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2059 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 12 REMARK 3 SOLVENT ATOMS : 252 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 26.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 24.43 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.07000 REMARK 3 B22 (A**2) : -0.07000 REMARK 3 B33 (A**2) : 0.10000 REMARK 3 B12 (A**2) : -0.03000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): 0.089 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.065 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.259 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.973 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.964 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2125 ; 0.015 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 2881 ; 1.448 ; 1.988 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 274 ; 5.613 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 79 ;37.551 ;24.684 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 358 ;13.534 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 7 ;14.618 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 329 ; 0.111 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1585 ; 0.010 ; 0.021 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 1362 ; 0.991 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2202 ; 1.703 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 763 ; 2.859 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 679 ; 4.779 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A -10 A 9999 REMARK 3 ORIGIN FOR THE GROUP (A): -28.1020 -19.9580 -0.1070 REMARK 3 T TENSOR REMARK 3 T11: 0.0046 T22: 0.0117 REMARK 3 T33: 0.3068 T12: 0.0028 REMARK 3 T13: 0.0009 T23: -0.0144 REMARK 3 L TENSOR REMARK 3 L11: 0.8557 L22: 0.8319 REMARK 3 L33: 0.3095 L12: -0.0526 REMARK 3 L13: -0.0176 L23: 0.1633 REMARK 3 S TENSOR REMARK 3 S11: -0.0122 S12: -0.0260 S13: 0.0671 REMARK 3 S21: 0.0330 S22: 0.0464 S23: -0.1531 REMARK 3 S31: 0.0044 S32: 0.0477 S33: -0.0342 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 3ODG COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-AUG-10. REMARK 100 THE DEPOSITION ID IS D_1000060976. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 09-OCT-09 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X29A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0750 REMARK 200 MONOCHROMATOR : DOUBLE SILICON(111) CRYSTAL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 31056 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.640 REMARK 200 RESOLUTION RANGE LOW (A) : 48.240 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 200 DATA REDUNDANCY : 11.70 REMARK 200 R MERGE (I) : 0.09600 REMARK 200 R SYM (I) : 0.07600 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 24.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.64 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.70 REMARK 200 COMPLETENESS FOR SHELL (%) : 81.1 REMARK 200 DATA REDUNDANCY IN SHELL : 10.20 REMARK 200 R MERGE FOR SHELL (I) : 0.56200 REMARK 200 R SYM FOR SHELL (I) : 0.48300 REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP 10.2.23 REMARK 200 STARTING MODEL: 1YQQ REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.06 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.12 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M TRIS-HCL PH 8.5, 0.2M SODIUM REMARK 280 ACETATE, 30% PEG4000, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE REMARK 280 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/2 REMARK 290 6555 X-Y,X,Z+1/2 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 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 24.45300 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 24.45300 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 24.45300 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 7360 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 29860 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -67.0 KCAL/MOL 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 -0.500000 -0.866025 0.000000 -96.47000 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 -0.500000 0.866025 0.000000 -48.23500 REMARK 350 BIOMT2 3 -0.866025 -0.500000 0.000000 -83.54547 REMARK 350 BIOMT3 3 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 THR A 2 REMARK 465 THR A 3 REMARK 465 VAL A 4 REMARK 465 ASN A 5 REMARK 465 SER A 6 REMARK 465 ASN A 7 REMARK 465 ILE A 8 REMARK 465 ASN A 9 REMARK 465 VAL A 10 REMARK 465 ASP A 11 REMARK 465 ALA A 12 REMARK 465 LEU A 286 REMARK 465 ARG A 287 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 SER A 224 -149.64 -135.02 REMARK 500 VAL A 225 -62.72 74.92 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XAN A 288 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 289 DBREF 3ODG A 1 287 UNP Q66D48 Q66D48_YERPS 1 287 SEQRES 1 A 287 MET THR THR VAL ASN SER ASN ILE ASN VAL ASP ALA ASP SEQRES 2 A 287 PHE ASN GLU LEU PRO PHE GLN ALA VAL LYS TYR ILE GLN SEQRES 3 A 287 LYS ILE LYS PRO GLY PHE LYS PRO GLN ILE ALA PHE ILE SEQRES 4 A 287 LEU GLY SER GLY LEU GLY ASP LEU VAL ASP GLN ILE THR SEQRES 5 A 287 ASN ASP THR THR ILE SER TYR ALA ASP ILE PRO GLY PHE SEQRES 6 A 287 PRO VAL SER SER VAL HIS GLY HIS ALA GLY GLU LEU VAL SEQRES 7 A 287 LEU GLY ASP LEU CYS GLY VAL PRO VAL MET CYS MET LYS SEQRES 8 A 287 GLY ARG GLY HIS PHE TYR GLU GLY LYS GLY MET SER ILE SEQRES 9 A 287 MET THR ASN PRO VAL ARG THR PHE LYS LEU MET GLY CYS SEQRES 10 A 287 GLU PHE LEU PHE CYS THR ASN ALA ALA GLY SER LEU ARG SEQRES 11 A 287 PRO GLU VAL LEU PRO GLY SER VAL VAL MET LEU LYS ASP SEQRES 12 A 287 HIS ILE ASN THR MET PRO GLY THR PRO LEU VAL GLY PRO SEQRES 13 A 287 ASN ASP ASP ARG PHE GLY PRO ARG PHE PHE SER LEU ALA SEQRES 14 A 287 ASN ALA TYR ASP LYS ASP LEU ARG ALA ASP MET ALA LYS SEQRES 15 A 287 ILE ALA GLN GLN LEU ASP ILE PRO LEU THR GLU GLY VAL SEQRES 16 A 287 PHE VAL SER TYR PRO GLY PRO CYS PHE GLU THR PRO ALA SEQRES 17 A 287 GLU ILE ARG MET MET GLN ILE ILE GLY GLY ASP VAL VAL SEQRES 18 A 287 GLY MET SER VAL VAL PRO GLU VAL LEU SER ALA ALA HIS SEQRES 19 A 287 CYS GLY LEU LYS VAL ILE ALA LEU THR ALA ILE THR ASN SEQRES 20 A 287 LEU ALA GLU GLY LEU SER ASP VAL VAL LEU SER HIS GLU SEQRES 21 A 287 GLN THR LEU LYS PHE ALA LYS VAL ALA SER VAL ASN PHE SEQRES 22 A 287 THR LYS LEU ILE GLU ALA PHE LEU LYS SER LYS ALA LEU SEQRES 23 A 287 ARG HET XAN A 288 11 HET CL A 289 1 HETNAM XAN XANTHINE HETNAM CL CHLORIDE ION FORMUL 2 XAN C5 H4 N4 O2 FORMUL 3 CL CL 1- FORMUL 4 HOH *252(H2 O) HELIX 1 1 ASP A 13 ASN A 15 5 3 HELIX 2 2 GLU A 16 LYS A 29 1 14 HELIX 3 3 LEU A 44 ILE A 51 5 8 HELIX 4 4 ALA A 60 ILE A 62 5 3 HELIX 5 5 HIS A 95 GLY A 99 5 5 HELIX 6 6 GLY A 101 ILE A 104 5 4 HELIX 7 7 MET A 105 MET A 115 1 11 HELIX 8 8 ASP A 173 ASP A 188 1 16 HELIX 9 9 THR A 206 ILE A 216 1 11 HELIX 10 10 VAL A 225 GLY A 236 1 12 HELIX 11 11 SER A 258 ALA A 285 1 28 SHEET 1 A10 THR A 52 SER A 58 0 SHEET 2 A10 GLU A 76 LEU A 82 -1 O LEU A 77 N ILE A 57 SHEET 3 A10 VAL A 85 LYS A 91 -1 O LYS A 91 N GLU A 76 SHEET 4 A10 ILE A 36 LEU A 40 1 N PHE A 38 O MET A 90 SHEET 5 A10 PHE A 119 SER A 128 1 O PHE A 121 N ALA A 37 SHEET 6 A10 LYS A 238 LEU A 248 1 O ILE A 240 N CYS A 122 SHEET 7 A10 VAL A 138 ILE A 145 -1 N LEU A 141 O ALA A 241 SHEET 8 A10 THR A 192 SER A 198 1 O THR A 192 N MET A 140 SHEET 9 A10 VAL A 220 GLY A 222 1 O VAL A 220 N VAL A 197 SHEET 10 A10 PHE A 119 SER A 128 -1 N GLY A 127 O VAL A 221 CISPEP 1 GLY A 201 PRO A 202 0 3.01 SITE 1 AC1 12 ALA A 125 ALA A 126 GLY A 127 GLU A 205 SITE 2 AC1 12 VAL A 221 GLY A 222 MET A 223 THR A 246 SITE 3 AC1 12 ASN A 247 THR A 262 HOH A 306 HOH A 358 SITE 1 AC2 6 SER A 42 ASN A 124 ALA A 125 HOH A 348 SITE 2 AC2 6 HOH A 433 HOH A 469 CRYST1 96.470 96.470 48.906 90.00 90.00 120.00 P 63 6 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 0.010366 0.005985 0.000000 0.00000 SCALE2 0.000000 0.011970 0.000000 0.00000 SCALE3 0.000000 0.000000 0.020447 0.00000