HEADER HYDROLASE 03-DEC-07 3BJC TITLE CRYSTAL STRUCTURE OF THE PDE5A CATALYTIC DOMAIN IN COMPLEX WITH A TITLE 2 NOVEL INHIBITOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: CGMP-SPECIFIC 3',5'-CYCLIC PHOSPHODIESTERASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: CGB-PDE, CGMP-BINDING CGMP-SPECIFIC PHOSPHODIESTERASE; COMPND 5 EC: 3.1.4.35; 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: PDE5A, PDE5; 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 PDE5, ERECTILE DYSFUNCTION, INHIBITOR DESIGN, ALLOSTERIC ENZYME, KEYWDS 2 ALTERNATIVE SPLICING, CGMP, CGMP-BINDING, HYDROLASE, MAGNESIUM, KEYWDS 3 METAL-BINDING, NUCLEOTIDE-BINDING, PHOSPHOPROTEIN, POLYMORPHISM, KEYWDS 4 ZINC EXPDTA X-RAY DIFFRACTION AUTHOR G.CHEN,H.WANG,R.HOWARD,J.CAI,Y.WAN,H.KE REVDAT 4 03-APR-24 3BJC 1 REMARK REVDAT 3 21-FEB-24 3BJC 1 REMARK SEQADV LINK REVDAT 2 24-FEB-09 3BJC 1 VERSN REVDAT 1 29-APR-08 3BJC 0 JRNL AUTH G.CHEN,H.WANG,H.ROBINSON,J.CAI,Y.WAN,H.KE JRNL TITL AN INSIGHT INTO THE PHARMACOPHORES OF PHOSPHODIESTERASE-5 JRNL TITL 2 INHIBITORS FROM SYNTHETIC AND CRYSTAL STRUCTURAL STUDIES JRNL REF BIOCHEM.PHARM. V. 75 1717 2008 JRNL REFN ISSN 0006-2952 JRNL PMID 18346713 JRNL DOI 10.1016/J.BCP.2008.01.019 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 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) : 2.00 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) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 25314 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) : 0.197 REMARK 3 FREE R VALUE : 0.221 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 2534 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 : 2521 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 28 REMARK 3 SOLVENT ATOMS : 116 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 38.50 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) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.200 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 3BJC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-DEC-07. REMARK 100 THE DEPOSITION ID IS D_1000045591. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-SEP-06 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 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 : 26266 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 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 (%) : 91.1 REMARK 200 DATA REDUNDANCY : 9.300 REMARK 200 R MERGE (I) : 0.07300 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 11.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.10 REMARK 200 COMPLETENESS FOR SHELL (%) : 49.8 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.35000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.000 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: PDE5 CATALYTIC DOMAIN IN COMPLEX WITH IBMX REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): NULL REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): NULL REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: THE PDE5A1-12 COMPLEX WAS PREPARED BY REMARK 280 MIXING 1 MM COMPOUND 12 WITH 15 MG/ML PDE5A1 THAT WAS STORED IN REMARK 280 A BUFFER OF 20 MM TRIS.BASE, PH 7.5, 50 MM NACL, 1 MM BETA- REMARK 280 MERCAPTOETHANOL, AND 1 MM EDTA. THE PROTEIN DROP WAS PREPARED BY REMARK 280 MIXING PROTEIN WITH WELL BUFFER AND CRYSTALLIZED AGAINST A WELL REMARK 280 BUFFER OF 2.0 M SODIUM FORMATE, 0.1 M SODIUM CITRATE, PH 5.6, 5% REMARK 280 ETHANOL AT 298K, VAPOR DIFFUSION, HANGING DROP REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 44.16967 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 88.33933 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 88.33933 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 44.16967 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: MONOMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC 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 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 -2 REMARK 465 SER A -1 REMARK 465 HIS A 0 REMARK 465 MET A 1 REMARK 465 GLU A 2 REMARK 465 ARG A 3 REMARK 465 ALA A 4 REMARK 465 GLY A 5 REMARK 465 PRO A 6 REMARK 465 SER A 7 REMARK 465 PHE A 8 REMARK 465 GLY A 9 REMARK 465 GLN A 10 REMARK 465 GLN A 11 REMARK 465 ARG A 12 REMARK 465 GLN A 13 REMARK 465 GLN A 14 REMARK 465 GLN A 15 REMARK 465 GLN A 16 REMARK 465 PRO A 17 REMARK 465 GLN A 18 REMARK 465 GLN A 19 REMARK 465 GLN A 20 REMARK 465 LYS A 21 REMARK 465 GLN A 22 REMARK 465 GLN A 23 REMARK 465 GLN A 24 REMARK 465 ARG A 25 REMARK 465 ASP A 26 REMARK 465 GLN A 27 REMARK 465 ASP A 28 REMARK 465 SER A 29 REMARK 465 VAL A 30 REMARK 465 GLU A 31 REMARK 465 ALA A 32 REMARK 465 TRP A 33 REMARK 465 LEU A 34 REMARK 465 ASP A 35 REMARK 465 ASP A 36 REMARK 465 HIS A 37 REMARK 465 TRP A 38 REMARK 465 ASP A 39 REMARK 465 PHE A 40 REMARK 465 THR A 41 REMARK 465 PHE A 42 REMARK 465 SER A 43 REMARK 465 TYR A 44 REMARK 465 PHE A 45 REMARK 465 VAL A 46 REMARK 465 ARG A 47 REMARK 465 LYS A 48 REMARK 465 ALA A 49 REMARK 465 THR A 50 REMARK 465 ARG A 51 REMARK 465 GLU A 52 REMARK 465 MET A 53 REMARK 465 VAL A 54 REMARK 465 ASN A 55 REMARK 465 ALA A 56 REMARK 465 TRP A 57 REMARK 465 PHE A 58 REMARK 465 ALA A 59 REMARK 465 GLU A 60 REMARK 465 ARG A 61 REMARK 465 VAL A 62 REMARK 465 HIS A 63 REMARK 465 THR A 64 REMARK 465 ILE A 65 REMARK 465 PRO A 66 REMARK 465 VAL A 67 REMARK 465 CYS A 68 REMARK 465 LYS A 69 REMARK 465 GLU A 70 REMARK 465 GLY A 71 REMARK 465 ILE A 72 REMARK 465 ARG A 73 REMARK 465 GLY A 74 REMARK 465 HIS A 75 REMARK 465 THR A 76 REMARK 465 GLU A 77 REMARK 465 SER A 78 REMARK 465 CYS A 79 REMARK 465 SER A 80 REMARK 465 CYS A 81 REMARK 465 PRO A 82 REMARK 465 LEU A 83 REMARK 465 GLN A 84 REMARK 465 GLN A 85 REMARK 465 SER A 86 REMARK 465 PRO A 87 REMARK 465 ARG A 88 REMARK 465 ALA A 89 REMARK 465 ASP A 90 REMARK 465 ASN A 91 REMARK 465 SER A 92 REMARK 465 VAL A 93 REMARK 465 PRO A 94 REMARK 465 GLY A 95 REMARK 465 THR A 96 REMARK 465 PRO A 97 REMARK 465 THR A 98 REMARK 465 ARG A 99 REMARK 465 LYS A 100 REMARK 465 ILE A 101 REMARK 465 SER A 102 REMARK 465 ALA A 103 REMARK 465 SER A 104 REMARK 465 GLU A 105 REMARK 465 PHE A 106 REMARK 465 ASP A 107 REMARK 465 ARG A 108 REMARK 465 PRO A 109 REMARK 465 LEU A 110 REMARK 465 ARG A 111 REMARK 465 PRO A 112 REMARK 465 ILE A 113 REMARK 465 VAL A 114 REMARK 465 VAL A 115 REMARK 465 LYS A 116 REMARK 465 ASP A 117 REMARK 465 SER A 118 REMARK 465 GLU A 119 REMARK 465 GLY A 120 REMARK 465 THR A 121 REMARK 465 VAL A 122 REMARK 465 SER A 123 REMARK 465 PHE A 124 REMARK 465 LEU A 125 REMARK 465 SER A 126 REMARK 465 ASP A 127 REMARK 465 SER A 128 REMARK 465 GLU A 129 REMARK 465 LYS A 130 REMARK 465 LYS A 131 REMARK 465 GLU A 132 REMARK 465 GLN A 133 REMARK 465 MET A 134 REMARK 465 PRO A 135 REMARK 465 LEU A 136 REMARK 465 THR A 137 REMARK 465 PRO A 138 REMARK 465 PRO A 139 REMARK 465 ARG A 140 REMARK 465 PHE A 141 REMARK 465 ASP A 142 REMARK 465 HIS A 143 REMARK 465 ASP A 144 REMARK 465 GLU A 145 REMARK 465 GLY A 146 REMARK 465 ASP A 147 REMARK 465 GLN A 148 REMARK 465 CYS A 149 REMARK 465 SER A 150 REMARK 465 ARG A 151 REMARK 465 LEU A 152 REMARK 465 LEU A 153 REMARK 465 GLU A 154 REMARK 465 LEU A 155 REMARK 465 VAL A 156 REMARK 465 LYS A 157 REMARK 465 ASP A 158 REMARK 465 ILE A 159 REMARK 465 SER A 160 REMARK 465 SER A 161 REMARK 465 HIS A 162 REMARK 465 LEU A 163 REMARK 465 ASP A 164 REMARK 465 VAL A 165 REMARK 465 THR A 166 REMARK 465 ALA A 167 REMARK 465 LEU A 168 REMARK 465 CYS A 169 REMARK 465 HIS A 170 REMARK 465 LYS A 171 REMARK 465 ILE A 172 REMARK 465 PHE A 173 REMARK 465 LEU A 174 REMARK 465 HIS A 175 REMARK 465 ILE A 176 REMARK 465 HIS A 177 REMARK 465 GLY A 178 REMARK 465 LEU A 179 REMARK 465 ILE A 180 REMARK 465 SER A 181 REMARK 465 ALA A 182 REMARK 465 ASP A 183 REMARK 465 ARG A 184 REMARK 465 TYR A 185 REMARK 465 SER A 186 REMARK 465 LEU A 187 REMARK 465 PHE A 188 REMARK 465 LEU A 189 REMARK 465 VAL A 190 REMARK 465 CYS A 191 REMARK 465 GLU A 192 REMARK 465 ASP A 193 REMARK 465 SER A 194 REMARK 465 SER A 195 REMARK 465 ASN A 196 REMARK 465 ASP A 197 REMARK 465 LYS A 198 REMARK 465 PHE A 199 REMARK 465 LEU A 200 REMARK 465 ILE A 201 REMARK 465 SER A 202 REMARK 465 ARG A 203 REMARK 465 LEU A 204 REMARK 465 PHE A 205 REMARK 465 ASP A 206 REMARK 465 VAL A 207 REMARK 465 ALA A 208 REMARK 465 GLU A 209 REMARK 465 GLY A 210 REMARK 465 SER A 211 REMARK 465 THR A 212 REMARK 465 LEU A 213 REMARK 465 GLU A 214 REMARK 465 GLU A 215 REMARK 465 VAL A 216 REMARK 465 SER A 217 REMARK 465 ASN A 218 REMARK 465 ASN A 219 REMARK 465 CYS A 220 REMARK 465 ILE A 221 REMARK 465 ARG A 222 REMARK 465 LEU A 223 REMARK 465 GLU A 224 REMARK 465 TRP A 225 REMARK 465 ASN A 226 REMARK 465 LYS A 227 REMARK 465 GLY A 228 REMARK 465 ILE A 229 REMARK 465 VAL A 230 REMARK 465 GLY A 231 REMARK 465 HIS A 232 REMARK 465 VAL A 233 REMARK 465 ALA A 234 REMARK 465 ALA A 235 REMARK 465 LEU A 236 REMARK 465 GLY A 237 REMARK 465 GLU A 238 REMARK 465 PRO A 239 REMARK 465 LEU A 240 REMARK 465 ASN A 241 REMARK 465 ILE A 242 REMARK 465 LYS A 243 REMARK 465 ASP A 244 REMARK 465 ALA A 245 REMARK 465 TYR A 246 REMARK 465 GLU A 247 REMARK 465 ASP A 248 REMARK 465 PRO A 249 REMARK 465 ARG A 250 REMARK 465 PHE A 251 REMARK 465 ASN A 252 REMARK 465 ALA A 253 REMARK 465 GLU A 254 REMARK 465 VAL A 255 REMARK 465 ASP A 256 REMARK 465 GLN A 257 REMARK 465 ILE A 258 REMARK 465 THR A 259 REMARK 465 GLY A 260 REMARK 465 TYR A 261 REMARK 465 LYS A 262 REMARK 465 THR A 263 REMARK 465 GLN A 264 REMARK 465 SER A 265 REMARK 465 ILE A 266 REMARK 465 LEU A 267 REMARK 465 CYS A 268 REMARK 465 MET A 269 REMARK 465 PRO A 270 REMARK 465 ILE A 271 REMARK 465 LYS A 272 REMARK 465 ASN A 273 REMARK 465 HIS A 274 REMARK 465 ARG A 275 REMARK 465 GLU A 276 REMARK 465 GLU A 277 REMARK 465 VAL A 278 REMARK 465 VAL A 279 REMARK 465 GLY A 280 REMARK 465 VAL A 281 REMARK 465 ALA A 282 REMARK 465 GLN A 283 REMARK 465 ALA A 284 REMARK 465 ILE A 285 REMARK 465 ASN A 286 REMARK 465 LYS A 287 REMARK 465 LYS A 288 REMARK 465 SER A 289 REMARK 465 GLY A 290 REMARK 465 ASN A 291 REMARK 465 GLY A 292 REMARK 465 GLY A 293 REMARK 465 THR A 294 REMARK 465 PHE A 295 REMARK 465 THR A 296 REMARK 465 GLU A 297 REMARK 465 LYS A 298 REMARK 465 ASP A 299 REMARK 465 GLU A 300 REMARK 465 LYS A 301 REMARK 465 ASP A 302 REMARK 465 PHE A 303 REMARK 465 ALA A 304 REMARK 465 ALA A 305 REMARK 465 TYR A 306 REMARK 465 LEU A 307 REMARK 465 ALA A 308 REMARK 465 PHE A 309 REMARK 465 CYS A 310 REMARK 465 GLY A 311 REMARK 465 ILE A 312 REMARK 465 VAL A 313 REMARK 465 LEU A 314 REMARK 465 HIS A 315 REMARK 465 ASN A 316 REMARK 465 ALA A 317 REMARK 465 GLN A 318 REMARK 465 LEU A 319 REMARK 465 TYR A 320 REMARK 465 GLU A 321 REMARK 465 THR A 322 REMARK 465 SER A 323 REMARK 465 LEU A 324 REMARK 465 LEU A 325 REMARK 465 GLU A 326 REMARK 465 ASN A 327 REMARK 465 LYS A 328 REMARK 465 ARG A 329 REMARK 465 ASN A 330 REMARK 465 GLN A 331 REMARK 465 VAL A 332 REMARK 465 LEU A 333 REMARK 465 LEU A 334 REMARK 465 ASP A 335 REMARK 465 LEU A 336 REMARK 465 ALA A 337 REMARK 465 SER A 338 REMARK 465 LEU A 339 REMARK 465 ILE A 340 REMARK 465 PHE A 341 REMARK 465 GLU A 342 REMARK 465 GLU A 343 REMARK 465 GLN A 344 REMARK 465 GLN A 345 REMARK 465 SER A 346 REMARK 465 LEU A 347 REMARK 465 GLU A 348 REMARK 465 VAL A 349 REMARK 465 ILE A 350 REMARK 465 LEU A 351 REMARK 465 LYS A 352 REMARK 465 LYS A 353 REMARK 465 ILE A 354 REMARK 465 ALA A 355 REMARK 465 ALA A 356 REMARK 465 THR A 357 REMARK 465 ILE A 358 REMARK 465 ILE A 359 REMARK 465 SER A 360 REMARK 465 PHE A 361 REMARK 465 MET A 362 REMARK 465 GLN A 363 REMARK 465 VAL A 364 REMARK 465 GLN A 365 REMARK 465 LYS A 366 REMARK 465 CYS A 367 REMARK 465 THR A 368 REMARK 465 ILE A 369 REMARK 465 PHE A 370 REMARK 465 ILE A 371 REMARK 465 VAL A 372 REMARK 465 ASP A 373 REMARK 465 GLU A 374 REMARK 465 ASP A 375 REMARK 465 CYS A 376 REMARK 465 SER A 377 REMARK 465 ASP A 378 REMARK 465 SER A 379 REMARK 465 PHE A 380 REMARK 465 SER A 381 REMARK 465 SER A 382 REMARK 465 VAL A 383 REMARK 465 PHE A 384 REMARK 465 HIS A 385 REMARK 465 MET A 386 REMARK 465 GLU A 387 REMARK 465 CYS A 388 REMARK 465 GLU A 389 REMARK 465 GLU A 390 REMARK 465 LEU A 391 REMARK 465 GLU A 392 REMARK 465 LYS A 393 REMARK 465 SER A 394 REMARK 465 SER A 395 REMARK 465 ASP A 396 REMARK 465 THR A 397 REMARK 465 LEU A 398 REMARK 465 THR A 399 REMARK 465 ARG A 400 REMARK 465 GLU A 401 REMARK 465 HIS A 402 REMARK 465 ASP A 403 REMARK 465 ALA A 404 REMARK 465 ASN A 405 REMARK 465 LYS A 406 REMARK 465 ILE A 407 REMARK 465 ASN A 408 REMARK 465 TYR A 409 REMARK 465 MET A 410 REMARK 465 TYR A 411 REMARK 465 ALA A 412 REMARK 465 GLN A 413 REMARK 465 TYR A 414 REMARK 465 VAL A 415 REMARK 465 LYS A 416 REMARK 465 ASN A 417 REMARK 465 THR A 418 REMARK 465 MET A 419 REMARK 465 GLU A 420 REMARK 465 PRO A 421 REMARK 465 LEU A 422 REMARK 465 ASN A 423 REMARK 465 ILE A 424 REMARK 465 PRO A 425 REMARK 465 ASP A 426 REMARK 465 VAL A 427 REMARK 465 SER A 428 REMARK 465 LYS A 429 REMARK 465 ASP A 430 REMARK 465 LYS A 431 REMARK 465 ARG A 432 REMARK 465 PHE A 433 REMARK 465 PRO A 434 REMARK 465 TRP A 435 REMARK 465 THR A 436 REMARK 465 THR A 437 REMARK 465 GLU A 438 REMARK 465 ASN A 439 REMARK 465 THR A 440 REMARK 465 GLY A 441 REMARK 465 ASN A 442 REMARK 465 VAL A 443 REMARK 465 ASN A 444 REMARK 465 GLN A 445 REMARK 465 GLN A 446 REMARK 465 CYS A 447 REMARK 465 ILE A 448 REMARK 465 ARG A 449 REMARK 465 SER A 450 REMARK 465 LEU A 451 REMARK 465 LEU A 452 REMARK 465 CYS A 453 REMARK 465 THR A 454 REMARK 465 PRO A 455 REMARK 465 ILE A 456 REMARK 465 LYS A 457 REMARK 465 ASN A 458 REMARK 465 GLY A 459 REMARK 465 LYS A 460 REMARK 465 LYS A 461 REMARK 465 ASN A 462 REMARK 465 LYS A 463 REMARK 465 VAL A 464 REMARK 465 ILE A 465 REMARK 465 GLY A 466 REMARK 465 VAL A 467 REMARK 465 CYS A 468 REMARK 465 GLN A 469 REMARK 465 LEU A 470 REMARK 465 VAL A 471 REMARK 465 ASN A 472 REMARK 465 LYS A 473 REMARK 465 MET A 474 REMARK 465 GLU A 475 REMARK 465 GLU A 476 REMARK 465 ASN A 477 REMARK 465 THR A 478 REMARK 465 GLY A 479 REMARK 465 LYS A 480 REMARK 465 VAL A 481 REMARK 465 LYS A 482 REMARK 465 PRO A 483 REMARK 465 PHE A 484 REMARK 465 ASN A 485 REMARK 465 ARG A 486 REMARK 465 ASN A 487 REMARK 465 ASP A 488 REMARK 465 GLU A 489 REMARK 465 GLN A 490 REMARK 465 PHE A 491 REMARK 465 LEU A 492 REMARK 465 GLU A 493 REMARK 465 ALA A 494 REMARK 465 PHE A 495 REMARK 465 VAL A 496 REMARK 465 ILE A 497 REMARK 465 PHE A 498 REMARK 465 CYS A 499 REMARK 465 GLY A 500 REMARK 465 LEU A 501 REMARK 465 GLY A 502 REMARK 465 ILE A 503 REMARK 465 GLN A 504 REMARK 465 ASN A 505 REMARK 465 THR A 506 REMARK 465 GLN A 507 REMARK 465 MET A 508 REMARK 465 TYR A 509 REMARK 465 GLU A 510 REMARK 465 ALA A 511 REMARK 465 VAL A 512 REMARK 465 GLU A 513 REMARK 465 ARG A 514 REMARK 465 ALA A 515 REMARK 465 MET A 516 REMARK 465 ALA A 517 REMARK 465 LYS A 518 REMARK 465 GLN A 519 REMARK 465 MET A 520 REMARK 465 VAL A 521 REMARK 465 THR A 522 REMARK 465 LEU A 523 REMARK 465 GLU A 524 REMARK 465 VAL A 525 REMARK 465 LEU A 526 REMARK 465 SER A 527 REMARK 465 TYR A 528 REMARK 465 HIS A 529 REMARK 465 ALA A 530 REMARK 465 SER A 531 REMARK 465 ALA A 532 REMARK 465 ALA A 533 REMARK 465 GLU A 534 REMARK 465 GLU A 793 REMARK 465 ARG A 794 REMARK 465 LYS A 795 REMARK 465 GLU A 796 REMARK 465 LEU A 797 REMARK 465 ASN A 798 REMARK 465 ILE A 799 REMARK 465 GLU A 800 REMARK 465 PRO A 801 REMARK 465 THR A 802 REMARK 465 ASP A 803 REMARK 465 LEU A 804 REMARK 465 MET A 805 REMARK 465 ASN A 806 REMARK 465 ARG A 807 REMARK 465 GLU A 861 REMARK 465 LYS A 862 REMARK 465 MET A 863 REMARK 465 LEU A 864 REMARK 465 ILE A 865 REMARK 465 ASN A 866 REMARK 465 GLY A 867 REMARK 465 GLU A 868 REMARK 465 SER A 869 REMARK 465 GLY A 870 REMARK 465 GLN A 871 REMARK 465 ALA A 872 REMARK 465 LYS A 873 REMARK 465 ARG A 874 REMARK 465 ASN A 875 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 LYS A 630 -74.34 -86.37 REMARK 500 ASN A 661 41.53 -99.08 REMARK 500 GLN A 859 115.55 66.97 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 ZN A 876 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 617 NE2 REMARK 620 2 HIS A 653 NE2 109.4 REMARK 620 3 ASP A 654 OD2 96.6 87.8 REMARK 620 4 ASP A 764 OD1 82.7 87.9 175.2 REMARK 620 5 HOH A 903 O 129.9 120.2 92.2 92.0 REMARK 620 N 1 2 3 4 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 876 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 877 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE WAN A 901 DBREF 3BJC A 1 875 UNP O76074 PDE5A_HUMAN 1 875 SEQADV 3BJC GLY A -2 UNP O76074 EXPRESSION TAG SEQADV 3BJC SER A -1 UNP O76074 EXPRESSION TAG SEQADV 3BJC HIS A 0 UNP O76074 EXPRESSION TAG SEQRES 1 A 878 GLY SER HIS MET GLU ARG ALA GLY PRO SER PHE GLY GLN SEQRES 2 A 878 GLN ARG GLN GLN GLN GLN PRO GLN GLN GLN LYS GLN GLN SEQRES 3 A 878 GLN ARG ASP GLN ASP SER VAL GLU ALA TRP LEU ASP ASP SEQRES 4 A 878 HIS TRP ASP PHE THR PHE SER TYR PHE VAL ARG LYS ALA SEQRES 5 A 878 THR ARG GLU MET VAL ASN ALA TRP PHE ALA GLU ARG VAL SEQRES 6 A 878 HIS THR ILE PRO VAL CYS LYS GLU GLY ILE ARG GLY HIS SEQRES 7 A 878 THR GLU SER CYS SER CYS PRO LEU GLN GLN SER PRO ARG SEQRES 8 A 878 ALA ASP ASN SER VAL PRO GLY THR PRO THR ARG LYS ILE SEQRES 9 A 878 SER ALA SER GLU PHE ASP ARG PRO LEU ARG PRO ILE VAL SEQRES 10 A 878 VAL LYS ASP SER GLU GLY THR VAL SER PHE LEU SER ASP SEQRES 11 A 878 SER GLU LYS LYS GLU GLN MET PRO LEU THR PRO PRO ARG SEQRES 12 A 878 PHE ASP HIS ASP GLU GLY ASP GLN CYS SER ARG LEU LEU SEQRES 13 A 878 GLU LEU VAL LYS ASP ILE SER SER HIS LEU ASP VAL THR SEQRES 14 A 878 ALA LEU CYS HIS LYS ILE PHE LEU HIS ILE HIS GLY LEU SEQRES 15 A 878 ILE SER ALA ASP ARG TYR SER LEU PHE LEU VAL CYS GLU SEQRES 16 A 878 ASP SER SER ASN ASP LYS PHE LEU ILE SER ARG LEU PHE SEQRES 17 A 878 ASP VAL ALA GLU GLY SER THR LEU GLU GLU VAL SER ASN SEQRES 18 A 878 ASN CYS ILE ARG LEU GLU TRP ASN LYS GLY ILE VAL GLY SEQRES 19 A 878 HIS VAL ALA ALA LEU GLY GLU PRO LEU ASN ILE LYS ASP SEQRES 20 A 878 ALA TYR GLU ASP PRO ARG PHE ASN ALA GLU VAL ASP GLN SEQRES 21 A 878 ILE THR GLY TYR LYS THR GLN SER ILE LEU CYS MET PRO SEQRES 22 A 878 ILE LYS ASN HIS ARG GLU GLU VAL VAL GLY VAL ALA GLN SEQRES 23 A 878 ALA ILE ASN LYS LYS SER GLY ASN GLY GLY THR PHE THR SEQRES 24 A 878 GLU LYS ASP GLU LYS ASP PHE ALA ALA TYR LEU ALA PHE SEQRES 25 A 878 CYS GLY ILE VAL LEU HIS ASN ALA GLN LEU TYR GLU THR SEQRES 26 A 878 SER LEU LEU GLU ASN LYS ARG ASN GLN VAL LEU LEU ASP SEQRES 27 A 878 LEU ALA SER LEU ILE PHE GLU GLU GLN GLN SER LEU GLU SEQRES 28 A 878 VAL ILE LEU LYS LYS ILE ALA ALA THR ILE ILE SER PHE SEQRES 29 A 878 MET GLN VAL GLN LYS CYS THR ILE PHE ILE VAL ASP GLU SEQRES 30 A 878 ASP CYS SER ASP SER PHE SER SER VAL PHE HIS MET GLU SEQRES 31 A 878 CYS GLU GLU LEU GLU LYS SER SER ASP THR LEU THR ARG SEQRES 32 A 878 GLU HIS ASP ALA ASN LYS ILE ASN TYR MET TYR ALA GLN SEQRES 33 A 878 TYR VAL LYS ASN THR MET GLU PRO LEU ASN ILE PRO ASP SEQRES 34 A 878 VAL SER LYS ASP LYS ARG PHE PRO TRP THR THR GLU ASN SEQRES 35 A 878 THR GLY ASN VAL ASN GLN GLN CYS ILE ARG SER LEU LEU SEQRES 36 A 878 CYS THR PRO ILE LYS ASN GLY LYS LYS ASN LYS VAL ILE SEQRES 37 A 878 GLY VAL CYS GLN LEU VAL ASN LYS MET GLU GLU ASN THR SEQRES 38 A 878 GLY LYS VAL LYS PRO PHE ASN ARG ASN ASP GLU GLN PHE SEQRES 39 A 878 LEU GLU ALA PHE VAL ILE PHE CYS GLY LEU GLY ILE GLN SEQRES 40 A 878 ASN THR GLN MET TYR GLU ALA VAL GLU ARG ALA MET ALA SEQRES 41 A 878 LYS GLN MET VAL THR LEU GLU VAL LEU SER TYR HIS ALA SEQRES 42 A 878 SER ALA ALA GLU GLU GLU THR ARG GLU LEU GLN SER LEU SEQRES 43 A 878 ALA ALA ALA VAL VAL PRO SER ALA GLN THR LEU LYS ILE SEQRES 44 A 878 THR ASP PHE SER PHE SER ASP PHE GLU LEU SER ASP LEU SEQRES 45 A 878 GLU THR ALA LEU CYS THR ILE ARG MET PHE THR ASP LEU SEQRES 46 A 878 ASN LEU VAL GLN ASN PHE GLN MET LYS HIS GLU VAL LEU SEQRES 47 A 878 CYS ARG TRP ILE LEU SER VAL LYS LYS ASN TYR ARG LYS SEQRES 48 A 878 ASN VAL ALA TYR HIS ASN TRP ARG HIS ALA PHE ASN THR SEQRES 49 A 878 ALA GLN CYS MET PHE ALA ALA LEU LYS ALA GLY LYS ILE SEQRES 50 A 878 GLN ASN LYS LEU THR ASP LEU GLU ILE LEU ALA LEU LEU SEQRES 51 A 878 ILE ALA ALA LEU SER HIS ASP LEU ASP HIS ARG GLY VAL SEQRES 52 A 878 ASN ASN SER TYR ILE GLN ARG SER GLU HIS PRO LEU ALA SEQRES 53 A 878 GLN LEU TYR CYS HIS SER ILE MET GLU HIS HIS HIS PHE SEQRES 54 A 878 ASP GLN CYS LEU MET ILE LEU ASN SER PRO GLY ASN GLN SEQRES 55 A 878 ILE LEU SER GLY LEU SER ILE GLU GLU TYR LYS THR THR SEQRES 56 A 878 LEU LYS ILE ILE LYS GLN ALA ILE LEU ALA THR ASP LEU SEQRES 57 A 878 ALA LEU TYR ILE LYS ARG ARG GLY GLU PHE PHE GLU LEU SEQRES 58 A 878 ILE ARG LYS ASN GLN PHE ASN LEU GLU ASP PRO HIS GLN SEQRES 59 A 878 LYS GLU LEU PHE LEU ALA MET LEU MET THR ALA CYS ASP SEQRES 60 A 878 LEU SER ALA ILE THR LYS PRO TRP PRO ILE GLN GLN ARG SEQRES 61 A 878 ILE ALA GLU LEU VAL ALA THR GLU PHE PHE ASP GLN GLY SEQRES 62 A 878 ASP ARG GLU ARG LYS GLU LEU ASN ILE GLU PRO THR ASP SEQRES 63 A 878 LEU MET ASN ARG GLU LYS LYS ASN LYS ILE PRO SER MET SEQRES 64 A 878 GLN VAL GLY PHE ILE ASP ALA ILE CYS LEU GLN LEU TYR SEQRES 65 A 878 GLU ALA LEU THR HIS VAL SER GLU ASP CYS PHE PRO LEU SEQRES 66 A 878 LEU ASP GLY CYS ARG LYS ASN ARG GLN LYS TRP GLN ALA SEQRES 67 A 878 LEU ALA GLU GLN GLN GLU LYS MET LEU ILE ASN GLY GLU SEQRES 68 A 878 SER GLY GLN ALA LYS ARG ASN HET ZN A 876 1 HET MG A 877 1 HET WAN A 901 26 HETNAM ZN ZINC ION HETNAM MG MAGNESIUM ION HETNAM WAN 5-ETHOXY-4-(1-METHYL-7-OXO-3-PROPYL-6,7-DIHYDRO-1H- HETNAM 2 WAN PYRAZOLO[4,3-D]PYRIMIDIN-5-YL)THIOPHENE-2-SULFONAMIDE FORMUL 2 ZN ZN 2+ FORMUL 3 MG MG 2+ FORMUL 4 WAN C15 H19 N5 O4 S2 FORMUL 5 HOH *116(H2 O) HELIX 1 1 GLU A 536 ALA A 546 1 11 HELIX 2 2 SER A 550 LYS A 555 1 6 HELIX 3 3 SER A 567 LEU A 582 1 16 HELIX 4 4 ASN A 583 PHE A 588 1 6 HELIX 5 5 LYS A 591 ASN A 605 1 15 HELIX 6 6 ASN A 614 ALA A 631 1 18 HELIX 7 7 ILE A 634 LEU A 638 5 5 HELIX 8 8 THR A 639 HIS A 653 1 15 HELIX 9 9 TYR A 664 SER A 668 5 5 HELIX 10 10 LEU A 672 CYS A 677 1 6 HELIX 11 11 SER A 679 ASN A 694 1 16 HELIX 12 12 SER A 705 ALA A 722 1 18 HELIX 13 13 ASP A 724 LYS A 741 1 18 HELIX 14 14 ASP A 748 LEU A 765 1 18 HELIX 15 15 SER A 766 LYS A 770 5 5 HELIX 16 16 PRO A 771 ASP A 788 1 18 HELIX 17 17 GLU A 808 ILE A 824 1 17 HELIX 18 18 ILE A 824 SER A 836 1 13 HELIX 19 19 CYS A 839 GLU A 858 1 20 LINK NE2 HIS A 617 ZN ZN A 876 1555 1555 2.19 LINK NE2 HIS A 653 ZN ZN A 876 1555 1555 2.19 LINK OD2 ASP A 654 ZN ZN A 876 1555 1555 2.05 LINK OD1 ASP A 654 MG MG A 877 1555 1555 2.16 LINK OD1 ASP A 764 ZN ZN A 876 1555 1555 2.06 LINK ZN ZN A 876 O HOH A 903 1555 1555 2.20 SITE 1 AC1 5 HIS A 617 HIS A 653 ASP A 654 ASP A 764 SITE 2 AC1 5 HOH A 903 SITE 1 AC2 4 ASP A 654 HIS A 657 HOH A 903 HOH A 905 SITE 1 AC3 13 HIS A 613 GLU A 669 HIS A 670 PRO A 671 SITE 2 AC3 13 LEU A 672 TYR A 676 ALA A 783 PHE A 786 SITE 3 AC3 13 MET A 816 GLN A 817 PHE A 820 HOH A 914 SITE 4 AC3 13 HOH A 934 CRYST1 73.755 73.755 132.509 90.00 90.00 120.00 P 31 2 1 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 0.013558 0.007828 0.000000 0.00000 SCALE2 0.000000 0.015656 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007547 0.00000