PDB Short entry for 2B52 HEADER TRANSFERASE 27-SEP-05 2B52 TITLE HUMAN CYCLIN DEPENDENT KINASE 2 (CDK2) COMPLEXED WITH DPH- TITLE 2 042562 COMPND MOL_ID: 1; COMPND 2 MOLECULE: CELL DIVISION PROTEIN KINASE 2; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: P33 PROTEIN KINASE, CDK2; COMPND 5 EC: 2.7.1.37; 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: CDK2; SOURCE 6 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 7 EXPRESSION_SYSTEM_COMMON: FALL ARMYWORM; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 7108; SOURCE 9 EXPRESSION_SYSTEM_CELL_LINE: SF9; SOURCE 10 EXPRESSION_SYSTEM_VECTOR: BACULOVIRUS KEYWDS PROTEIN KINASE, CELL CYCLE, PHOSPHORYLATION, CELL DIVISION, KEYWDS 2 MITOSIS, INHIBITION, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR J.MUCKELBAUER REVDAT 2 24-FEB-09 2B52 1 VERSN REVDAT 1 11-OCT-05 2B52 0 JRNL AUTH E.W.YUE,S.V.DIMEO,C.A.HIGLEY,J.A.MARKWALDER, JRNL AUTH 2 C.R.BURTON,P.A.BENFIELD,R.H.GRAFSTROM,S.COX, JRNL AUTH 3 J.K.MUCKELBAUER,A.SMALLWOOD,H.CHEN,C.-H.CHANG, JRNL AUTH 4 G.L.TRAINOR,S.P.SEITZ JRNL TITL SYNTHESIS AND EVALUATION OF INDENOPYRAZOLES AS JRNL TITL 2 CYCLIN-DEPENDENT KINASE INHIBITORS. PART 4: JRNL TITL 3 HETEROCYCLES AT C3 JRNL REF BIOORG.MED.CHEM.LETT. V. 14 343 2004 JRNL REFN ISSN 0960-894X JRNL PMID 14698155 JRNL DOI 10.1016/J.BMCL.2003.11.008 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 1.88 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNX 2002 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN,ACCELRYS REMARK 3 : SOFTWARE INC.(BADGER,BERARD,KUMAR,SZALMA, REMARK 3 : YIP,DZAKULA) REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.88 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 18.71 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 342487.410 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 86.8 REMARK 3 NUMBER OF REFLECTIONS : 20200 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) : NULL REMARK 3 R VALUE (WORKING SET) : 0.219 REMARK 3 FREE R VALUE : 0.275 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 7.900 REMARK 3 FREE R VALUE TEST SET COUNT : 1603 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 ESTIMATED ERROR OF FREE R VALUE (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.88 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.00 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 64.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2296 REMARK 3 BIN R VALUE (WORKING SET) : 0.3080 REMARK 3 BIN FREE R VALUE : 0.2880 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 7.80 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 195 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.021 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2277 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 31 REMARK 3 SOLVENT ATOMS : 60 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 17.40 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 42.10 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -8.42000 REMARK 3 B22 (A**2) : 7.30000 REMARK 3 B33 (A**2) : 1.12000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.27 REMARK 3 ESD FROM SIGMAA (A) : 0.29 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.31 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.20 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.70 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.84 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.470 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.590 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.840 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.000 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 56.65 REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : PROTEIN_REP.P REMARK 3 PARAMETER FILE 2 : WATER_REP.PAR REMARK 3 PARAMETER FILE 5 : A523.XPRM REMARK 3 TOPOLOGY FILE 1 : WATER.TOP REMARK 3 TOPOLOGY FILE 2 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2B52 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 28-SEP-05. REMARK 100 THE RCSB ID CODE IS RCSB034684. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-DEC-00 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.4 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 5ID-B REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MAR CCD 165 MM REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 23208 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.880 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 7.200 REMARK 200 R MERGE (I) : 0.06600 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 21.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.88 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.95 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 6.40 REMARK 200 R MERGE FOR SHELL (I) : 0.74700 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: EPMR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.73 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.04 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 100MM HEPES PH 7.4, 50MM AMMONIUM REMARK 280 ACETATE, 2MM DTT, 4-14% PEG 4000 , VAPOR DIFFUSION, SITTING REMARK 280 DROP, TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 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 36.01500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 26.75000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 36.00500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 26.75000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 36.01500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 36.00500 REMARK 290 SMTRY3 4 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: 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 LEU A 37 REMARK 465 ASP A 38 REMARK 465 THR A 39 REMARK 465 GLU A 40 REMARK 465 ARG A 150 REMARK 465 ALA A 151 REMARK 465 PHE A 152 REMARK 465 GLY A 153 REMARK 465 VAL A 154 REMARK 465 PRO A 155 REMARK 465 VAL A 156 REMARK 465 ARG A 157 REMARK 465 THR A 158 REMARK 465 TYR A 159 REMARK 465 THR A 160 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 6 97.67 -57.95 REMARK 500 VAL A 44 102.71 73.51 REMARK 500 LEU A 55 -37.94 -39.33 REMARK 500 HIS A 71 70.77 -115.82 REMARK 500 ARG A 126 -21.10 80.09 REMARK 500 ASP A 127 51.78 -143.47 REMARK 500 LEU A 148 48.89 -91.22 REMARK 500 GLU A 162 -122.58 -76.74 REMARK 500 VAL A 163 74.27 -159.99 REMARK 500 TYR A 179 55.51 -94.39 REMARK 500 PRO A 254 65.80 -102.46 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 D42 A 299 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2B53 RELATED DB: PDB REMARK 900 RELATED ID: 2B54 RELATED DB: PDB REMARK 900 RELATED ID: 2B55 RELATED DB: PDB DBREF 2B52 A 1 298 UNP P24941 CDK2_HUMAN 1 298 SEQRES 1 A 298 MET GLU ASN PHE GLN LYS VAL GLU LYS ILE GLY GLU GLY SEQRES 2 A 298 THR TYR GLY VAL VAL TYR LYS ALA ARG ASN LYS LEU THR SEQRES 3 A 298 GLY GLU VAL VAL ALA LEU LYS LYS ILE ARG LEU ASP THR SEQRES 4 A 298 GLU THR GLU GLY VAL PRO SER THR ALA ILE ARG GLU ILE SEQRES 5 A 298 SER LEU LEU LYS GLU LEU ASN HIS PRO ASN ILE VAL LYS SEQRES 6 A 298 LEU LEU ASP VAL ILE HIS THR GLU ASN LYS LEU TYR LEU SEQRES 7 A 298 VAL PHE GLU PHE LEU HIS GLN ASP LEU LYS LYS PHE MET SEQRES 8 A 298 ASP ALA SER ALA LEU THR GLY ILE PRO LEU PRO LEU ILE SEQRES 9 A 298 LYS SER TYR LEU PHE GLN LEU LEU GLN GLY LEU ALA PHE SEQRES 10 A 298 CYS HIS SER HIS ARG VAL LEU HIS ARG ASP LEU LYS PRO SEQRES 11 A 298 GLN ASN LEU LEU ILE ASN THR GLU GLY ALA ILE LYS LEU SEQRES 12 A 298 ALA ASP PHE GLY LEU ALA ARG ALA PHE GLY VAL PRO VAL SEQRES 13 A 298 ARG THR TYR THR HIS GLU VAL VAL THR LEU TRP TYR ARG SEQRES 14 A 298 ALA PRO GLU ILE LEU LEU GLY CYS LYS TYR TYR SER THR SEQRES 15 A 298 ALA VAL ASP ILE TRP SER LEU GLY CYS ILE PHE ALA GLU SEQRES 16 A 298 MET VAL THR ARG ARG ALA LEU PHE PRO GLY ASP SER GLU SEQRES 17 A 298 ILE ASP GLN LEU PHE ARG ILE PHE ARG THR LEU GLY THR SEQRES 18 A 298 PRO ASP GLU VAL VAL TRP PRO GLY VAL THR SER MET PRO SEQRES 19 A 298 ASP TYR LYS PRO SER PHE PRO LYS TRP ALA ARG GLN ASP SEQRES 20 A 298 PHE SER LYS VAL VAL PRO PRO LEU ASP GLU ASP GLY ARG SEQRES 21 A 298 SER LEU LEU SER GLN MET LEU HIS TYR ASP PRO ASN LYS SEQRES 22 A 298 ARG ILE SER ALA LYS ALA ALA LEU ALA HIS PRO PHE PHE SEQRES 23 A 298 GLN ASP VAL THR LYS PRO VAL PRO HIS LEU ARG LEU HET D42 A 299 31 HETNAM D42 1-(3-(2,4-DIMETHYLTHIAZOL-5-YL)-4-OXO-2,4- HETNAM 2 D42 DIHYDROINDENO[1,2-C]PYRAZOL-5-YL)-3-(4- HETNAM 3 D42 METHYLPIPERAZIN-1-YL)UREA HETSYN D42 DPH-042562 FORMUL 2 D42 C21 H23 N7 O2 S FORMUL 3 HOH *60(H2 O) HELIX 1 1 THR A 47 LYS A 56 1 10 HELIX 2 2 LEU A 87 ALA A 95 1 9 HELIX 3 3 PRO A 100 HIS A 121 1 22 HELIX 4 4 LYS A 129 GLN A 131 5 3 HELIX 5 5 ALA A 170 LEU A 175 1 6 HELIX 6 6 THR A 182 ARG A 199 1 18 HELIX 7 7 SER A 207 GLY A 220 1 14 HELIX 8 8 GLY A 229 MET A 233 5 5 HELIX 9 9 ASP A 247 VAL A 252 1 6 HELIX 10 10 ASP A 256 LEU A 267 1 12 HELIX 11 11 SER A 276 ALA A 282 1 7 HELIX 12 12 HIS A 283 GLN A 287 5 5 SHEET 1 A 5 PHE A 4 GLU A 12 0 SHEET 2 A 5 GLY A 16 ASN A 23 -1 O LYS A 20 N GLU A 8 SHEET 3 A 5 VAL A 29 ILE A 35 -1 O VAL A 30 N ALA A 21 SHEET 4 A 5 LYS A 75 GLU A 81 -1 O LEU A 76 N ILE A 35 SHEET 5 A 5 LEU A 66 THR A 72 -1 N ILE A 70 O TYR A 77 SHEET 1 B 3 GLN A 85 ASP A 86 0 SHEET 2 B 3 LEU A 133 ILE A 135 -1 O ILE A 135 N GLN A 85 SHEET 3 B 3 ILE A 141 LEU A 143 -1 O LYS A 142 N LEU A 134 CISPEP 1 PRO A 253 PRO A 254 0 0.63 SITE 1 AC1 15 ILE A 10 GLY A 13 VAL A 18 ALA A 31 SITE 2 AC1 15 VAL A 64 PHE A 80 GLU A 81 PHE A 82 SITE 3 AC1 15 LEU A 83 HIS A 84 ASP A 86 GLN A 131 SITE 4 AC1 15 ASN A 132 LEU A 134 ASP A 145 CRYST1 72.030 72.010 53.500 90.00 90.00 90.00 P 21 21 21 4 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 0.013883 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013887 0.000000 0.00000 SCALE3 0.000000 0.000000 0.018692 0.00000