HEADER ANTIVIRAL PROTEIN 31-DEC-23 8XO3 TITLE CRYSTAL STRUCTURE OF MEASLES VIRUS FUSION INHIBITOR M1 COMPLEXED WITH TITLE 2 F PROTEIN HR1 (HR1-47) (P321 SPACE GROUP) COMPND MOL_ID: 1; COMPND 2 MOLECULE: FUSION GLYCOPROTEIN F1; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: FUSION GLYCOPROTEIN F1; COMPND 7 CHAIN: B; COMPND 8 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: MEASLES VIRUS STRAIN EDMONSTON; SOURCE 4 ORGANISM_TAXID: 11235; SOURCE 5 MOL_ID: 2; SOURCE 6 SYNTHETIC: YES; SOURCE 7 ORGANISM_SCIENTIFIC: MEASLES VIRUS STRAIN EDMONSTON; SOURCE 8 ORGANISM_TAXID: 11235 KEYWDS FUSION PROTEIN, FUSION INHIBITOR, SIX-HELIX BUNDLE, ANTIVIRAL PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR S.OISHI,A.TAKAHARA,T.NAKATSU REVDAT 2 05-MAR-25 8XO3 1 JRNL REVDAT 1 01-JAN-25 8XO3 0 JRNL AUTH A.TAKAHARA,T.NAKATSU,K.HIRATA,H.HAYASHI,K.KAWAJI,K.AOKI, JRNL AUTH 2 S.INUKI,H.OHNO,H.KATO,E.KODAMA,S.OISHI JRNL TITL ELUCIDATION OF POSTFUSION STRUCTURES OF THE MEASLES VIRUS F JRNL TITL 2 PROTEIN FOR THE STRUCTURE-BASED DESIGN OF FUSION INHIBITORS. JRNL REF J.MED.CHEM. V. 68 3123 2025 JRNL REFN ISSN 0022-2623 JRNL PMID 39887040 JRNL DOI 10.1021/ACS.JMEDCHEM.4C02337 REMARK 2 REMARK 2 RESOLUTION. 1.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.8.0258 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 41.53 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 99.0 REMARK 3 NUMBER OF REFLECTIONS : 32301 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : FREE R-VALUE REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.213 REMARK 3 FREE R VALUE : 0.235 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1615 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.13 REMARK 3 REFLECTION IN BIN (WORKING SET) : 2053 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 90.15 REMARK 3 BIN R VALUE (WORKING SET) : 0.4310 REMARK 3 BIN FREE R VALUE SET COUNT : 108 REMARK 3 BIN FREE R VALUE : 0.4060 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 636 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 110 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.38 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.75400 REMARK 3 B22 (A**2) : 0.75400 REMARK 3 B33 (A**2) : -2.44500 REMARK 3 B12 (A**2) : 0.37700 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.041 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.043 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.036 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.778 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.965 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.959 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 697 ; 0.014 ; 0.013 REMARK 3 BOND LENGTHS OTHERS (A): 654 ; 0.001 ; 0.017 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 952 ; 1.773 ; 1.629 REMARK 3 BOND ANGLES OTHERS (DEGREES): 1539 ; 1.633 ; 1.572 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 97 ; 3.756 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 43 ;30.238 ;24.070 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 141 ;12.426 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 4 ;12.491 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 100 ; 0.092 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 817 ; 0.008 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 119 ; 0.001 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 170 ; 0.230 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 61 ; 0.177 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 346 ; 0.168 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 67 ; 0.176 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): 5 ; 0.231 ; 0.200 REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 355 ; 1.874 ; 2.210 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 353 ; 1.853 ; 2.204 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 447 ; 2.448 ; 3.301 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): 447 ; 2.432 ; 3.299 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 340 ; 2.828 ; 2.623 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): 340 ; 2.798 ; 2.622 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 496 ; 4.409 ; 3.833 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): 497 ; 4.415 ; 3.837 REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK BULK SOLVENT REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THEIR REMARK 3 RIDING POSITIONS REMARK 4 REMARK 4 8XO3 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 04-JAN-24. REMARK 100 THE DEPOSITION ID IS D_1300043873. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 18-JUL-19 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SPRING-8 REMARK 200 BEAMLINE : BL45XU REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.000000 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS3 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 32332 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.104 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 (%) : 99.1 REMARK 200 DATA REDUNDANCY : 8.660 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 13.0200 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.17 REMARK 200 COMPLETENESS FOR SHELL (%) : 94.3 REMARK 200 DATA REDUNDANCY IN SHELL : 5.25 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 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: MOLREP REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.71 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 200 MM CA ACETATE, 15% (W/V) PEG 3350, REMARK 280 100 MM BIS-TRIS (PH 6.5), VAPOR DIFFUSION, SITTING DROP, REMARK 280 TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 3 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 REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z REMARK 290 6555 -X,-X+Y,-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 -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 0.00000 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 0.00000 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 0.00000 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 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: HEXAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEXAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 13680 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 12730 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -121.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 -0.500000 -0.866025 0.000000 32.89900 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 -0.500000 0.866025 0.000000 16.44950 REMARK 350 BIOMT2 3 -0.866025 -0.500000 0.000000 28.49137 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 203 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 208 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 242 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 644 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 657 LIES ON A SPECIAL POSITION. REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 OD2 ASP A 148 OD2 ASP A 148 4555 2.05 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 CA B 501 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 204 O REMARK 620 2 ASP B 472 OD1 146.6 REMARK 620 3 HOH B 602 O 135.6 77.4 REMARK 620 4 HOH B 608 O 76.9 113.1 77.7 REMARK 620 5 HOH B 614 O 110.4 76.7 78.5 151.3 REMARK 620 6 HOH B 617 O 80.3 70.4 130.5 81.6 126.5 REMARK 620 N 1 2 3 4 5 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 8XNE RELATED DB: PDB REMARK 900 RELATED ID: 8XO2 RELATED DB: PDB DBREF 8XO3 A 138 184 UNP P69353 FUS_MEASE 138 184 DBREF 8XO3 B 452 486 UNP P69353 FUS_MEASE 452 486 SEQADV 8XO3 ACE A 137 UNP P69353 ACETYLATION SEQADV 8XO3 NH2 A 185 UNP P69353 AMIDATION SEQADV 8XO3 ACE B 451 UNP P69353 ACETYLATION SEQADV 8XO3 NH2 B 487 UNP P69353 AMIDATION SEQRES 1 A 49 ACE HIS GLN SER MET LEU ASN SER GLN ALA ILE ASP ASN SEQRES 2 A 49 LEU ARG ALA SER LEU GLU THR THR ASN GLN ALA ILE GLU SEQRES 3 A 49 ALA ILE ARG GLN ALA GLY GLN GLU MET ILE LEU ALA VAL SEQRES 4 A 49 GLN GLY VAL GLN ASP TYR ILE ASN ASN NH2 SEQRES 1 B 37 ACE ILE SER LEU GLU ARG LEU ASP VAL GLY THR ASN LEU SEQRES 2 B 37 GLY ASN ALA ILE ALA LYS LEU GLU ASP ALA LYS GLU LEU SEQRES 3 B 37 LEU GLU SER SER ASP GLN ILE LEU ARG SER NH2 HET ACE A 137 3 HET NH2 A 185 1 HET ACE B 451 3 HET NH2 B 487 1 HET CA B 501 1 HETNAM ACE ACETYL GROUP HETNAM NH2 AMINO GROUP HETNAM CA CALCIUM ION FORMUL 1 ACE 2(C2 H4 O) FORMUL 1 NH2 2(H2 N) FORMUL 3 CA CA 2+ FORMUL 4 HOH *110(H2 O) HELIX 1 AA1 HIS A 138 ASN A 183 1 46 HELIX 2 AA2 VAL B 459 SER B 486 1 28 LINK C ACE A 137 N HIS A 138 1555 1555 1.37 LINK C ASN A 184 N NH2 A 185 1555 1555 1.26 LINK C ACE B 451 N ILE B 452 1555 1555 1.35 LINK C SER B 486 N NH2 B 487 1555 1555 1.28 LINK O HOH A 204 CA CA B 501 3565 1555 2.39 LINK OD1 ASP B 472 CA CA B 501 1555 1555 2.29 LINK CA CA B 501 O HOH B 602 1555 1555 2.17 LINK CA CA B 501 O HOH B 608 1555 1555 2.30 LINK CA CA B 501 O HOH B 614 1555 1555 1.99 LINK CA CA B 501 O HOH B 617 1555 1555 2.41 CRYST1 32.899 32.899 124.596 90.00 90.00 120.00 P 3 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 0.030396 0.017549 0.000000 0.00000 SCALE2 0.000000 0.035098 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008026 0.00000 CONECT 1 2 3 4 CONECT 2 1 CONECT 3 1 CONECT 4 1 CONECT 379 385 CONECT 385 379 CONECT 387 388 389 390 CONECT 388 387 CONECT 389 387 CONECT 390 387 CONECT 561 689 CONECT 683 687 CONECT 687 683 CONECT 689 561 744 750 756 CONECT 689 759 CONECT 744 689 CONECT 750 689 CONECT 756 689 CONECT 759 689 MASTER 304 0 5 2 0 0 0 6 747 2 19 7 END