HEADER TRANSFERASE 29-AUG-00 1FP1 TITLE CRYSTAL STRUCTURE ANALYSIS OF CHALCONE O-METHYLTRANSFERASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: ISOLIQUIRITIGENIN 2'-O-METHYLTRANSFERASE; COMPND 3 CHAIN: D; COMPND 4 SYNONYM: CHALCONE O-METHYLTRANSFERASE; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MEDICAGO SATIVA; SOURCE 3 ORGANISM_TAXID: 3879; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PHIS8 KEYWDS PROTEIN-SUBSTRATE, PROTEIN-PRODUCT COMPLEX, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR C.ZUBIETA,R.A.DIXON,J.P.NOEL REVDAT 6 07-FEB-24 1FP1 1 REMARK REVDAT 5 31-JAN-18 1FP1 1 REMARK REVDAT 4 13-JUL-11 1FP1 1 VERSN REVDAT 3 24-FEB-09 1FP1 1 VERSN REVDAT 2 01-APR-03 1FP1 1 JRNL REVDAT 1 07-MAR-01 1FP1 0 JRNL AUTH C.ZUBIETA,X.Z.HE,R.A.DIXON,J.P.NOEL JRNL TITL STRUCTURES OF TWO NATURAL PRODUCT METHYLTRANSFERASES REVEAL JRNL TITL 2 THE BASIS FOR SUBSTRATE SPECIFICITY IN PLANT JRNL TITL 3 O-METHYLTRANSFERASES. JRNL REF NAT.STRUCT.BIOL. V. 8 271 2001 JRNL REFN ISSN 1072-8368 JRNL PMID 11224575 JRNL DOI 10.1038/85029 REMARK 2 REMARK 2 RESOLUTION. 1.82 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) : 1.82 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 36.69 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1481320.390 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 90.5 REMARK 3 NUMBER OF REFLECTIONS : 32682 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 SET) : 0.226 REMARK 3 FREE R VALUE : 0.263 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1656 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.006 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) : 1.82 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.93 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 68.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 3833 REMARK 3 BIN R VALUE (WORKING SET) : 0.3520 REMARK 3 BIN FREE R VALUE : 0.3760 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.80 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 235 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.025 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2628 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 45 REMARK 3 SOLVENT ATOMS : 212 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 24.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 38.60 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 3.23000 REMARK 3 B22 (A**2) : 8.20000 REMARK 3 B33 (A**2) : -11.43000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -1.21000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.26 REMARK 3 ESD FROM SIGMAA (A) : 0.31 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) : 0.30 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.32 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.60 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.770 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) : 1.330 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.010 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.980 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.850 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.38 REMARK 3 BSOL : 59.48 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : THC1_PARA.TXT REMARK 3 PARAMETER FILE 3 : SAH_PARA.TXT REMARK 3 PARAMETER FILE 4 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : THC1_TOPO.TXT REMARK 3 TOPOLOGY FILE 4 : SAH_TOPO.TXT REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1FP1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-SEP-00. REMARK 100 THE DEPOSITION ID IS D_1000011784. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 31-MAR-00 REMARK 200 TEMPERATURE (KELVIN) : 105 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.03 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 32682 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.820 REMARK 200 RESOLUTION RANGE LOW (A) : 99.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.500 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.6 REMARK 200 DATA REDUNDANCY : 2.880 REMARK 200 R MERGE (I) : 0.05000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 25.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.82 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.85 REMARK 200 COMPLETENESS FOR SHELL (%) : 48.5 REMARK 200 DATA REDUNDANCY IN SHELL : 2.10 REMARK 200 R MERGE FOR SHELL (I) : 0.66000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 49.96 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.46 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, AMMONIUM ACETATE, PH 7.5, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 4K, TEMPERATURE 277.0K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z 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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 62.55950 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 26.89650 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 62.55950 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 26.89650 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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A DIMER CONSTRUCTED FROM THE REMARK 300 MONOMER BY A TWO-FOLD ROTATION. 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 10640 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 27150 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -81.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: D 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 -1.000000 0.000000 0.000000 41.09741 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 120.35257 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 D 1 REMARK 465 GLY D 2 REMARK 465 ASN D 3 REMARK 465 SER D 4 REMARK 465 TYR D 5 REMARK 465 ILE D 6 REMARK 465 THR D 7 REMARK 465 LYS D 8 REMARK 465 GLU D 9 REMARK 465 ASP D 10 REMARK 465 ASN D 11 REMARK 465 GLN D 12 REMARK 465 ILE D 13 REMARK 465 SER D 14 REMARK 465 ALA D 15 REMARK 465 THR D 16 REMARK 465 SER D 17 REMARK 465 GLU D 18 REMARK 465 ILE D 160 REMARK 465 ASP D 161 REMARK 465 LEU D 162 REMARK 465 PHE D 163 REMARK 465 LYS D 164 REMARK 465 ASN D 165 REMARK 465 VAL D 166 REMARK 465 HIS D 167 REMARK 465 GLY D 168 REMARK 465 VAL D 169 REMARK 465 THR D 170 REMARK 465 LYS D 171 REMARK 465 TYR D 172 REMARK 465 GLU D 173 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 GLN D 19 CA - C - N ANGL. DEV. = -18.0 DEGREES REMARK 500 GLN D 19 O - C - N ANGL. DEV. = 18.3 DEGREES REMARK 500 THR D 20 O - C - N ANGL. DEV. = 10.0 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 THR D 57 -72.50 -37.73 REMARK 500 GLU D 158 -4.20 -53.52 REMARK 500 MET D 175 -71.42 -64.31 REMARK 500 ASP D 178 82.62 104.39 REMARK 500 SER D 364 -28.22 -160.71 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 SAH D 1699 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HCC D 2000 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1FP2 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE ANALYSIS OF ISOFLAVONE O-METHYLTRANSFERASE REMARK 900 RELATED ID: 1FPX RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE ANALYSIS OF SELENOMETHIONINE SUBSTITUTED IOMT REMARK 900 RELATED ID: 1FPQ RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE ANALYSIS OF SELENOMETHIONINE SUBSTITUTED CHALCONE REMARK 900 O-METHYLTRANSFERASE DBREF 1FP1 D 1 372 UNP P93324 CHOMT_MEDSA 1 372 SEQRES 1 D 372 MET GLY ASN SER TYR ILE THR LYS GLU ASP ASN GLN ILE SEQRES 2 D 372 SER ALA THR SER GLU GLN THR GLU ASP SER ALA CYS LEU SEQRES 3 D 372 SER ALA MET VAL LEU THR THR ASN LEU VAL TYR PRO ALA SEQRES 4 D 372 VAL LEU ASN ALA ALA ILE ASP LEU ASN LEU PHE GLU ILE SEQRES 5 D 372 ILE ALA LYS ALA THR PRO PRO GLY ALA PHE MET SER PRO SEQRES 6 D 372 SER GLU ILE ALA SER LYS LEU PRO ALA SER THR GLN HIS SEQRES 7 D 372 SER ASP LEU PRO ASN ARG LEU ASP ARG MET LEU ARG LEU SEQRES 8 D 372 LEU ALA SER TYR SER VAL LEU THR SER THR THR ARG THR SEQRES 9 D 372 ILE GLU ASP GLY GLY ALA GLU ARG VAL TYR GLY LEU SER SEQRES 10 D 372 MET VAL GLY LYS TYR LEU VAL PRO ASP GLU SER ARG GLY SEQRES 11 D 372 TYR LEU ALA SER PHE THR THR PHE LEU CYS TYR PRO ALA SEQRES 12 D 372 LEU LEU GLN VAL TRP MET ASN PHE LYS GLU ALA VAL VAL SEQRES 13 D 372 ASP GLU ASP ILE ASP LEU PHE LYS ASN VAL HIS GLY VAL SEQRES 14 D 372 THR LYS TYR GLU PHE MET GLY LYS ASP LYS LYS MET ASN SEQRES 15 D 372 GLN ILE PHE ASN LYS SER MET VAL ASP VAL CYS ALA THR SEQRES 16 D 372 GLU MET LYS ARG MET LEU GLU ILE TYR THR GLY PHE GLU SEQRES 17 D 372 GLY ILE SER THR LEU VAL ASP VAL GLY GLY GLY SER GLY SEQRES 18 D 372 ARG ASN LEU GLU LEU ILE ILE SER LYS TYR PRO LEU ILE SEQRES 19 D 372 LYS GLY ILE ASN PHE ASP LEU PRO GLN VAL ILE GLU ASN SEQRES 20 D 372 ALA PRO PRO LEU SER GLY ILE GLU HIS VAL GLY GLY ASP SEQRES 21 D 372 MET PHE ALA SER VAL PRO GLN GLY ASP ALA MET ILE LEU SEQRES 22 D 372 LYS ALA VAL CYS HIS ASN TRP SER ASP GLU LYS CYS ILE SEQRES 23 D 372 GLU PHE LEU SER ASN CYS HIS LYS ALA LEU SER PRO ASN SEQRES 24 D 372 GLY LYS VAL ILE ILE VAL GLU PHE ILE LEU PRO GLU GLU SEQRES 25 D 372 PRO ASN THR SER GLU GLU SER LYS LEU VAL SER THR LEU SEQRES 26 D 372 ASP ASN LEU MET PHE ILE THR VAL GLY GLY ARG GLU ARG SEQRES 27 D 372 THR GLU LYS GLN TYR GLU LYS LEU SER LYS LEU SER GLY SEQRES 28 D 372 PHE SER LYS PHE GLN VAL ALA CYS ARG ALA PHE ASN SER SEQRES 29 D 372 LEU GLY VAL MET GLU PHE TYR LYS HET SAH D1699 26 HET HCC D2000 38 HETNAM SAH S-ADENOSYL-L-HOMOCYSTEINE HETNAM HCC 2',4,4'-TRIHYDROXYCHALCONE FORMUL 2 SAH C14 H20 N6 O5 S FORMUL 3 HCC C15 H12 O4 FORMUL 4 HOH *212(H2 O) HELIX 1 1 THR D 20 ASN D 34 1 15 HELIX 2 2 LEU D 35 LEU D 47 1 13 HELIX 3 3 ASN D 48 LYS D 55 1 8 HELIX 4 4 SER D 64 SER D 70 1 7 HELIX 5 5 LYS D 71 LEU D 72 5 2 HELIX 6 6 PRO D 73 GLN D 77 5 5 HELIX 7 7 ASP D 80 TYR D 95 1 16 HELIX 8 8 VAL D 119 VAL D 124 5 6 HELIX 9 9 ALA D 133 CYS D 140 1 8 HELIX 10 10 TYR D 141 MET D 149 1 9 HELIX 11 11 ASN D 150 ASP D 157 1 8 HELIX 12 12 ASP D 178 TYR D 204 1 27 HELIX 13 13 GLY D 221 TYR D 231 1 11 HELIX 14 14 LEU D 241 GLU D 246 1 6 HELIX 15 15 VAL D 276 TRP D 280 5 5 HELIX 16 16 SER D 281 ALA D 295 1 15 HELIX 17 17 SER D 316 GLY D 334 1 19 HELIX 18 18 GLU D 340 SER D 350 1 11 SHEET 1 A 2 LEU D 98 THR D 104 0 SHEET 2 A 2 ALA D 110 LEU D 116 -1 O GLU D 111 N ARG D 103 SHEET 1 B 7 LYS D 354 ALA D 361 0 SHEET 2 B 7 LEU D 365 TYR D 371 -1 N LEU D 365 O ALA D 361 SHEET 3 B 7 LEU D 296 LEU D 309 -1 O VAL D 302 N PHE D 370 SHEET 4 B 7 GLY D 268 LYS D 274 1 O GLY D 268 N SER D 297 SHEET 5 B 7 THR D 212 VAL D 216 1 O THR D 212 N ALA D 270 SHEET 6 B 7 LYS D 235 ASP D 240 1 O LYS D 235 N LEU D 213 SHEET 7 B 7 ILE D 254 GLY D 258 1 N GLU D 255 O GLY D 236 SHEET 1 C 4 LYS D 354 ALA D 361 0 SHEET 2 C 4 LEU D 365 TYR D 371 -1 N LEU D 365 O ALA D 361 SHEET 3 C 4 LEU D 296 LEU D 309 -1 O VAL D 302 N PHE D 370 SHEET 4 C 4 ARG D 338 THR D 339 1 O ARG D 338 N LEU D 309 SITE 1 AC1 19 GLU D 106 GLY D 217 ASN D 223 ASP D 240 SITE 2 AC1 19 LEU D 241 VAL D 244 ASP D 260 MET D 261 SITE 3 AC1 19 PHE D 262 LYS D 274 ALA D 275 HCC D2000 SITE 4 AC1 19 HOH D2001 HOH D2006 HOH D2031 HOH D2035 SITE 5 AC1 19 HOH D2041 HOH D2057 HOH D2090 SITE 1 AC2 16 MET D 29 PHE D 135 PHE D 185 MET D 189 SITE 2 AC2 16 VAL D 192 CYS D 193 LYS D 274 ALA D 275 SITE 3 AC2 16 HIS D 278 LEU D 328 MET D 329 THR D 332 SITE 4 AC2 16 SAH D1699 HOH D2011 HOH D2018 HOH D2139 CRYST1 125.119 53.793 73.390 90.00 124.92 90.00 C 1 2 1 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 0.007992 0.000000 0.005580 0.00000 SCALE2 0.000000 0.018590 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016618 0.00000