HEADER TRANSFERASE 27-JUL-09 3IGG TITLE NOVEL CDK-5 INHIBITORS - CRYSTAL STRUCTURE OF INHIBITOR EFQ TITLE 2 WITH CDK-2 COMPND MOL_ID: 1; COMPND 2 MOLECULE: CELL DIVISION PROTEIN KINASE 2; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: P33 PROTEIN KINASE; COMPND 5 EC: 2.7.11.22; 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_TAXID: 7108 KEYWDS PROTEIN KINASE, TRANSFERASE, SERINE/THREONINE PROTEIN KEYWDS 2 KINASE, INHIBITOR, ATP-BINDING, CELL CYCLE, CELL DIVISION, KEYWDS 3 KINASE, MITOSIS, NUCLEOTIDE-BINDING, PHOSPHOPROTEIN, KEYWDS 4 POLYMORPHISM, SERINE/THREONINE-PROTEIN KINASE EXPDTA X-RAY DIFFRACTION AUTHOR J.PANDIT REVDAT 2 13-OCT-09 3IGG 1 JRNL REVDAT 1 08-SEP-09 3IGG 0 JRNL AUTH C.J.HELAL,Z.KANG,J.C.LUCAS,T.GANT,M.K.AHLIJANIAN, JRNL AUTH 2 J.B.SCHACHTER,K.E.RICHTER,J.M.COOK,F.S.MENNITI, JRNL AUTH 3 K.KELLY,S.MENTE,J.PANDIT,N.HOSEA JRNL TITL POTENT AND CELLULARLY ACTIVE 4-AMINOIMIDAZOLE JRNL TITL 2 INHIBITORS OF CYCLIN-DEPENDENT KINASE 5/P25 FOR THE JRNL TITL 3 TREATMENT OF ALZHEIMER'S DISEASE. JRNL REF BIOORG.MED.CHEM.LETT. V. 19 5703 2009 JRNL REFN ISSN 0960-894X JRNL PMID 19700321 JRNL DOI 10.1016/J.BMCL.2009.08.019 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC5 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 18.72 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 24375 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.209 REMARK 3 R VALUE (WORKING SET) : 0.209 REMARK 3 FREE R VALUE : 0.257 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1294 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2338 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 22 REMARK 3 SOLVENT ATOMS : 119 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 32.60 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): NULL REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): NULL REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : NULL ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL 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 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 3IGG COMPLIES WITH FORMAT V. 3.20, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-JUL-09. REMARK 100 THE RCSB ID CODE IS RCSB054379. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 25669 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL 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: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.76 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.04 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 26.73500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 36.02000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 36.02000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 36.02000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 26.73500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 36.02000 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 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 ARG A 36 REMARK 465 LEU A 37 REMARK 465 ASP A 38 REMARK 465 THR A 39 REMARK 465 GLU A 40 REMARK 465 THR A 41 REMARK 465 GLU A 42 REMARK 465 GLY A 43 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ARG A 22 NE - CZ - NH2 ANGL. DEV. = -3.1 DEGREES REMARK 500 ARG A 126 NE - CZ - NH1 ANGL. DEV. = 4.4 DEGREES REMARK 500 ARG A 157 NE - CZ - NH2 ANGL. DEV. = -4.7 DEGREES REMARK 500 ARG A 214 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 ARG A 214 NE - CZ - NH2 ANGL. DEV. = -4.3 DEGREES REMARK 500 ARG A 217 CD - NE - CZ ANGL. DEV. = 9.4 DEGREES REMARK 500 ARG A 274 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 ARG A 274 NE - CZ - NH2 ANGL. DEV. = -4.4 DEGREES 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 15 -5.21 85.41 REMARK 500 ASN A 74 46.91 27.55 REMARK 500 ARG A 126 -17.84 81.55 REMARK 500 THR A 158 -173.30 -68.00 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CHIRAL CENTERS REMARK 500 REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY REMARK 500 M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (11X,I3,1X,A3,1X,A1,I4,A1,6X,F5.1,6X,A1,10X,A1,3X,A16) REMARK 500 REMARK 500 M RES CSSEQI IMPROPER EXPECTED FOUND DETAILS REMARK 500 ASN A 74 24.0 L L OUTSIDE RANGE 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 EFQ A 999 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3IG7 RELATED DB: PDB REMARK 900 SAME PROTEIN BOUND TO INHIBITOR EFP DBREF 3IGG A 1 298 UNP P24941 CDK2_HUMAN 1 298 SEQRES 1 A 299 ACE MET GLU ASN PHE GLN LYS VAL GLU LYS ILE GLY GLU SEQRES 2 A 299 GLY THR TYR GLY VAL VAL TYR LYS ALA ARG ASN LYS LEU SEQRES 3 A 299 THR GLY GLU VAL VAL ALA LEU LYS LYS ILE ARG LEU ASP SEQRES 4 A 299 THR GLU THR GLU GLY VAL PRO SER THR ALA ILE ARG GLU SEQRES 5 A 299 ILE SER LEU LEU LYS GLU LEU ASN HIS PRO ASN ILE VAL SEQRES 6 A 299 LYS LEU LEU ASP VAL ILE HIS THR GLU ASN LYS LEU TYR SEQRES 7 A 299 LEU VAL PHE GLU PHE LEU HIS GLN ASP LEU LYS LYS PHE SEQRES 8 A 299 MET ASP ALA SER ALA LEU THR GLY ILE PRO LEU PRO LEU SEQRES 9 A 299 ILE LYS SER TYR LEU PHE GLN LEU LEU GLN GLY LEU ALA SEQRES 10 A 299 PHE CYS HIS SER HIS ARG VAL LEU HIS ARG ASP LEU LYS SEQRES 11 A 299 PRO GLN ASN LEU LEU ILE ASN THR GLU GLY ALA ILE LYS SEQRES 12 A 299 LEU ALA ASP PHE GLY LEU ALA ARG ALA PHE GLY VAL PRO SEQRES 13 A 299 VAL ARG THR TYR THR HIS GLU VAL VAL THR LEU TRP TYR SEQRES 14 A 299 ARG ALA PRO GLU ILE LEU LEU GLY CYS LYS TYR TYR SER SEQRES 15 A 299 THR ALA VAL ASP ILE TRP SER LEU GLY CYS ILE PHE ALA SEQRES 16 A 299 GLU MET VAL THR ARG ARG ALA LEU PHE PRO GLY ASP SER SEQRES 17 A 299 GLU ILE ASP GLN LEU PHE ARG ILE PHE ARG THR LEU GLY SEQRES 18 A 299 THR PRO ASP GLU VAL VAL TRP PRO GLY VAL THR SER MET SEQRES 19 A 299 PRO ASP TYR LYS PRO SER PHE PRO LYS TRP ALA ARG GLN SEQRES 20 A 299 ASP PHE SER LYS VAL VAL PRO PRO LEU ASP GLU ASP GLY SEQRES 21 A 299 ARG SER LEU LEU SER GLN MET LEU HIS TYR ASP PRO ASN SEQRES 22 A 299 LYS ARG ILE SER ALA LYS ALA ALA LEU ALA HIS PRO PHE SEQRES 23 A 299 PHE GLN ASP VAL THR LYS PRO VAL PRO HIS LEU ARG LEU HET ACE A 0 3 HET EFQ A 999 22 HETNAM ACE ACETYL GROUP HETNAM EFQ N-[1-(CIS-3-HYDROXYCYCLOBUTYL)-1H-IMIDAZOL-4-YL]-2-(4- HETNAM 2 EFQ METHOXYPHENYL)ACETAMIDE FORMUL 1 ACE C2 H4 O FORMUL 2 EFQ C16 H19 N3 O3 FORMUL 3 HOH *119(H2 O) HELIX 1 1 PRO A 45 LYS A 56 1 12 HELIX 2 2 LEU A 87 SER A 94 1 8 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 GLY A 147 PHE A 152 1 6 HELIX 6 6 ALA A 170 LEU A 175 1 6 HELIX 7 7 THR A 182 ARG A 199 1 18 HELIX 8 8 SER A 207 GLY A 220 1 14 HELIX 9 9 GLY A 229 MET A 233 5 5 HELIX 10 10 ASP A 247 VAL A 252 1 6 HELIX 11 11 ASP A 256 LEU A 267 1 12 HELIX 12 12 SER A 276 ALA A 282 1 7 HELIX 13 13 HIS A 283 GLN A 287 5 5 SHEET 1 A 5 PHE A 4 GLY A 11 0 SHEET 2 A 5 VAL A 17 ASN A 23 -1 O LYS A 20 N GLU A 8 SHEET 3 A 5 VAL A 29 ILE A 35 -1 O LYS A 34 N VAL A 17 SHEET 4 A 5 LYS A 75 GLU A 81 -1 O PHE A 80 N ALA A 31 SHEET 5 A 5 LEU A 66 THR A 72 -1 N ASP A 68 O VAL A 79 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 LINK C ACE A 0 N MET A 1 1555 1555 1.33 SITE 1 AC1 16 GLU A 8 ILE A 10 VAL A 18 ALA A 31 SITE 2 AC1 16 LYS A 33 PHE A 80 GLU A 81 PHE A 82 SITE 3 AC1 16 LEU A 83 HIS A 84 LYS A 89 LEU A 134 SITE 4 AC1 16 ALA A 144 ASP A 145 HOH A 323 HOH A 378 CRYST1 53.470 72.040 72.040 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 0.018702 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013881 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013881 0.00000 HETATM 1 C ACE A 0 -14.351 33.775 -2.759 1.00 45.90 C HETATM 2 O ACE A 0 -13.680 34.764 -3.067 1.00 42.94 O HETATM 3 CH3 ACE A 0 -15.634 33.898 -2.016 1.00 48.96 C