HEADER HYDROLASE 15-AUG-07 2QYL TITLE CRYSTAL STRUCTURE OF PDE4B2B IN COMPLEX WITH INHIBITOR NPV COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHOSPHODIESTERASE 4B, CAMP-SPECIFIC; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: THE CATALYTIC DOMAIN OF PDE4B2B WITH RESIDUES COMPND 5 152-487; 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: PDE4B; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET15B KEYWDS PDE4B STRUCTURE, SELECTIVE INHIBITOR NVP, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR H.KE REVDAT 2 24-FEB-09 2QYL 1 VERSN REVDAT 1 08-APR-08 2QYL 0 JRNL AUTH H.WANG,M.S.PENG,Y.CHEN,J.GENG,H.ROBINSON, JRNL AUTH 2 M.D.HOUSLAY,J.CAI,H.KE JRNL TITL STRUCTURES OF THE FOUR SUBFAMILIES OF JRNL TITL 2 PHOSPHODIESTERASE-4 PROVIDE INSIGHT INTO THE JRNL TITL 3 SELECTIVITY OF THEIR INHIBITORS. JRNL REF BIOCHEM.J. V. 408 193 2007 JRNL REFN ISSN 0264-6021 JRNL PMID 17727341 JRNL DOI 10.1042/BJ20070970 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 1.95 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.2 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 88.2 REMARK 3 NUMBER OF REFLECTIONS : 27655 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.213 REMARK 3 FREE R VALUE : 0.239 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 2750 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2706 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 31 REMARK 3 SOLVENT ATOMS : 68 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 42.90 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.07 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : ISOTROPIC REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2QYL COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-SEP-07. REMARK 100 THE RCSB ID CODE IS RCSB044207. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 23-JAN-07 REMARK 200 TEMPERATURE (KELVIN) : 277 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) : 1.1 REMARK 200 MONOCHROMATOR : NULL 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 : 28299 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.950 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 89.8 REMARK 200 DATA REDUNDANCY : 13.300 REMARK 200 R MERGE (I) : 0.06400 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 13.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.95 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.02 REMARK 200 COMPLETENESS FOR SHELL (%) : 61.6 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.32000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 5.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDE4B REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 54.97 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.73 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 12% PEG3350, 0.1M TRIS HCL PH 8.5, REMARK 280 35% ETHYLENE GLYCOL, 200 MM MGCL2, VAPOR DIFFUSION, HANGING REMARK 280 DROP, TEMPERATURE 277K 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 43.91350 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 43.91350 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 45.87900 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 52.67650 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 45.87900 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 52.67650 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 43.91350 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 45.87900 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 52.67650 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 43.91350 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 45.87900 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 52.67650 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 300 REMARK: THE ASYMMETRIC UNIT CONTAINS ONE CATALYTIC DOMAIN OF REMARK 300 PDE4B2B 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: MONOMERIC 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 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 GLN A 486 REMARK 465 SER A 487 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 A 257 13.32 59.24 REMARK 500 LEU A 393 40.43 -108.64 REMARK 500 MET A 431 -17.24 82.75 REMARK 500 THR A 436 11.80 -142.38 REMARK 500 ILE A 450 -57.53 -122.15 REMARK 500 REMARK 500 REMARK: NULL 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 MG A 503 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 228 NE2 REMARK 620 2 ASP A 277 OD1 88.5 REMARK 620 3 HOH A 514 O 172.1 87.8 REMARK 620 4 HOH A 516 O 85.3 84.7 87.3 REMARK 620 5 HOH A 513 O 79.7 167.6 104.3 97.9 REMARK 620 6 HOH A 515 O 83.6 83.3 102.9 163.9 91.6 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 501 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 238 NE2 REMARK 620 2 HIS A 274 NE2 88.7 REMARK 620 3 ASP A 275 OD2 86.3 87.2 REMARK 620 4 ASP A 392 OD1 86.2 88.5 171.5 REMARK 620 5 HOH A 504 O 164.1 104.6 102.7 85.6 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 502 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 275 OD1 REMARK 620 2 HOH A 509 O 80.7 REMARK 620 3 HOH A 506 O 163.2 88.0 REMARK 620 4 HOH A 507 O 84.3 84.7 82.4 REMARK 620 5 HOH A 508 O 98.4 166.1 89.5 81.4 REMARK 620 6 HOH A 504 O 109.5 99.7 84.5 166.0 93.7 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 501 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 502 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 503 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NPV A 1 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2QYK RELATED DB: PDB REMARK 900 RELATED ID: 2QYM RELATED DB: PDB REMARK 900 RELATED ID: 2QYN RELATED DB: PDB DBREF 2QYL A 152 487 UNP Q5T3Z8 Q5T3Z8_HUMAN 152 487 SEQADV 2QYL MET A 151 UNP Q5T3Z8 INITIATING METHIONINE SEQRES 1 A 337 MET SER ILE SER ARG PHE GLY VAL ASN THR GLU ASN GLU SEQRES 2 A 337 ASP HIS LEU ALA LYS GLU LEU GLU ASP LEU ASN LYS TRP SEQRES 3 A 337 GLY LEU ASN ILE PHE ASN VAL ALA GLY TYR SER HIS ASN SEQRES 4 A 337 ARG PRO LEU THR CYS ILE MET TYR ALA ILE PHE GLN GLU SEQRES 5 A 337 ARG ASP LEU LEU LYS THR PHE ARG ILE SER SER ASP THR SEQRES 6 A 337 PHE ILE THR TYR MET MET THR LEU GLU ASP HIS TYR HIS SEQRES 7 A 337 SER ASP VAL ALA TYR HIS ASN SER LEU HIS ALA ALA ASP SEQRES 8 A 337 VAL ALA GLN SER THR HIS VAL LEU LEU SER THR PRO ALA SEQRES 9 A 337 LEU ASP ALA VAL PHE THR ASP LEU GLU ILE LEU ALA ALA SEQRES 10 A 337 ILE PHE ALA ALA ALA ILE HIS ASP VAL ASP HIS PRO GLY SEQRES 11 A 337 VAL SER ASN GLN PHE LEU ILE ASN THR ASN SER GLU LEU SEQRES 12 A 337 ALA LEU MET TYR ASN ASP GLU SER VAL LEU GLU ASN HIS SEQRES 13 A 337 HIS LEU ALA VAL GLY PHE LYS LEU LEU GLN GLU GLU HIS SEQRES 14 A 337 CYS ASP ILE PHE MET ASN LEU THR LYS LYS GLN ARG GLN SEQRES 15 A 337 THR LEU ARG LYS MET VAL ILE ASP MET VAL LEU ALA THR SEQRES 16 A 337 ASP MET SER LYS HIS MET SER LEU LEU ALA ASP LEU LYS SEQRES 17 A 337 THR MET VAL GLU THR LYS LYS VAL THR SER SER GLY VAL SEQRES 18 A 337 LEU LEU LEU ASP ASN TYR THR ASP ARG ILE GLN VAL LEU SEQRES 19 A 337 ARG ASN MET VAL HIS CYS ALA ASP LEU SER ASN PRO THR SEQRES 20 A 337 LYS SER LEU GLU LEU TYR ARG GLN TRP THR ASP ARG ILE SEQRES 21 A 337 MET GLU GLU PHE PHE GLN GLN GLY ASP LYS GLU ARG GLU SEQRES 22 A 337 ARG GLY MET GLU ILE SER PRO MET CYS ASP LYS HIS THR SEQRES 23 A 337 ALA SER VAL GLU LYS SER GLN VAL GLY PHE ILE ASP TYR SEQRES 24 A 337 ILE VAL HIS PRO LEU TRP GLU THR TRP ALA ASP LEU VAL SEQRES 25 A 337 GLN PRO ASP ALA GLN ASP ILE LEU ASP THR LEU GLU ASP SEQRES 26 A 337 ASN ARG ASN TRP TYR GLN SER MET ILE PRO GLN SER HET ZN A 501 1 HET MG A 502 1 HET MG A 503 1 HET NPV A 1 28 HETNAM ZN ZINC ION HETNAM MG MAGNESIUM ION HETNAM NPV 4-[8-(3-NITROPHENYL)-1,7-NAPHTHYRIDIN-6-YL]BENZOIC HETNAM 2 NPV ACID FORMUL 2 ZN ZN 2+ FORMUL 3 MG 2(MG 2+) FORMUL 5 NPV C21 H13 N3 O4 FORMUL 6 HOH *68(H2 O) HELIX 1 1 MET A 151 GLY A 157 1 7 HELIX 2 2 ASN A 162 LEU A 170 1 9 HELIX 3 3 GLU A 171 LEU A 173 5 3 HELIX 4 4 ASN A 179 TYR A 186 1 8 HELIX 5 5 ARG A 190 ASP A 204 1 15 HELIX 6 6 ASP A 204 PHE A 209 1 6 HELIX 7 7 SER A 212 HIS A 226 1 15 HELIX 8 8 ASN A 235 SER A 251 1 17 HELIX 9 9 THR A 252 ASP A 256 5 5 HELIX 10 10 THR A 260 HIS A 274 1 15 HELIX 11 11 SER A 282 THR A 289 1 8 HELIX 12 12 SER A 291 TYR A 297 1 7 HELIX 13 13 SER A 301 LEU A 315 1 15 HELIX 14 14 THR A 327 ALA A 344 1 18 HELIX 15 15 THR A 345 SER A 348 5 4 HELIX 16 16 LYS A 349 THR A 363 1 15 HELIX 17 17 ASN A 376 LEU A 393 1 18 HELIX 18 18 SER A 394 LYS A 398 5 5 HELIX 19 19 SER A 399 ARG A 424 1 26 HELIX 20 20 SER A 438 ILE A 450 1 13 HELIX 21 21 ILE A 450 VAL A 462 1 13 HELIX 22 22 ALA A 466 MET A 483 1 18 LINK NE2 HIS A 228 MG MG A 503 1555 1555 2.40 LINK NE2 HIS A 238 ZN ZN A 501 1555 1555 2.26 LINK NE2 HIS A 274 ZN ZN A 501 1555 1555 2.36 LINK OD1 ASP A 275 MG MG A 502 1555 1555 2.19 LINK OD2 ASP A 275 ZN ZN A 501 1555 1555 2.26 LINK OD1 ASP A 277 MG MG A 503 1555 1555 2.30 LINK OD1 ASP A 392 ZN ZN A 501 1555 1555 2.27 LINK ZN ZN A 501 O HOH A 504 1555 1555 2.19 LINK MG MG A 502 O HOH A 509 1555 1555 2.41 LINK MG MG A 502 O HOH A 506 1555 1555 2.41 LINK MG MG A 502 O HOH A 507 1555 1555 2.44 LINK MG MG A 502 O HOH A 508 1555 1555 2.31 LINK MG MG A 502 O HOH A 504 1555 1555 2.26 LINK MG MG A 503 O HOH A 514 1555 1555 2.34 LINK MG MG A 503 O HOH A 516 1555 1555 2.32 LINK MG MG A 503 O HOH A 513 1555 1555 2.32 LINK MG MG A 503 O HOH A 515 1555 1555 2.33 CISPEP 1 GLN A 463 PRO A 464 0 0.04 SITE 1 AC1 6 HIS A 238 HIS A 274 ASP A 275 ASP A 392 SITE 2 AC1 6 HOH A 504 HOH A 505 SITE 1 AC2 6 ASP A 275 HOH A 504 HOH A 506 HOH A 507 SITE 2 AC2 6 HOH A 508 HOH A 509 SITE 1 AC3 7 HIS A 228 ASP A 277 ASN A 290 HOH A 513 SITE 2 AC3 7 HOH A 514 HOH A 515 HOH A 516 SITE 1 AC4 10 MET A 347 ASN A 395 ILE A 410 PHE A 414 SITE 2 AC4 10 MET A 431 GLN A 443 PHE A 446 HOH A 508 SITE 3 AC4 10 HOH A 549 HOH A 562 CRYST1 91.758 105.353 87.827 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 0.010898 0.000000 0.000000 0.00000 SCALE2 0.000000 0.009492 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011386 0.00000 MASTER 314 0 4 22 0 0 9 6 0 0 0 26 END