HEADER METAL BINDING PROTEIN 13-DEC-23 8XF4 TITLE STRUCTURE OF THE SIDEROPHORE PERIPLASMIC BINDING PROTEIN FTSB FROM TITLE 2 STREPTOCOCCUS PYOGENES WITH BISUCABERIN BOUND COMPND MOL_ID: 1; COMPND 2 MOLECULE: IRON-HYDROXAMATE ABC TRANSPORTER SUBSTRATE-BINDING PROTEIN COMPND 3 FTSB; COMPND 4 CHAIN: A; COMPND 5 SYNONYM: FTSB; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOCOCCUS PYOGENES SSI-1; SOURCE 3 ORGANISM_TAXID: 193567; SOURCE 4 GENE: E0F66_02370; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008 KEYWDS STREPTOCOCCUS PYOGENES, SIDEROPHORE, HYDROXAMATE, FTSB, ABC KEYWDS 2 TRANSPORTER, ALANINE SCANNING, ANTIBIOTIC STRATEGY, BISUCABERIN, KEYWDS 3 METAL BINDING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR J.M.M.CAAVEIRO,J.FERNANDEZ-PEREZ,K.TSUMOTO REVDAT 2 30-OCT-24 8XF4 1 JRNL REVDAT 1 09-OCT-24 8XF4 0 JRNL AUTH J.FERNANDEZ-PEREZ,A.SENOO,J.M.M.CAAVEIRO,M.NAKAKIDO, JRNL AUTH 2 S.DE VEGA,I.NAKAGAWA,K.TSUMOTO JRNL TITL STRUCTURAL BASIS FOR THE LIGAND PROMISCUITY OF THE JRNL TITL 2 HYDROXAMATE SIDEROPHORE BINDING PROTEIN FTSB FROM JRNL TITL 3 STREPTOCOCCUS PYOGENES. JRNL REF STRUCTURE 2024 JRNL REFN ISSN 0969-2126 JRNL PMID 39395422 JRNL DOI 10.1016/J.STR.2024.09.018 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.8.0419 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) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 45.80 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 98.3 REMARK 3 NUMBER OF REFLECTIONS : 17386 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) : 0.199 REMARK 3 FREE R VALUE : 0.234 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.768 REMARK 3 FREE R VALUE TEST SET COUNT : 829 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) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.05 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1175 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 97.39 REMARK 3 BIN R VALUE (WORKING SET) : 0.2900 REMARK 3 BIN FREE R VALUE SET COUNT : 56 REMARK 3 BIN FREE R VALUE : 0.2920 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2183 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 58 REMARK 3 SOLVENT ATOMS : 89 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.56 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -1.52900 REMARK 3 B22 (A**2) : -0.30300 REMARK 3 B33 (A**2) : 1.83200 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.231 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.179 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.158 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 6.084 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.959 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.946 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2286 ; 0.006 ; 0.012 REMARK 3 BOND LENGTHS OTHERS (A): 2243 ; 0.001 ; 0.016 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3086 ; 1.529 ; 1.869 REMARK 3 BOND ANGLES OTHERS (DEGREES): 5203 ; 0.515 ; 1.811 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 273 ; 6.330 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 6 ; 4.682 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 413 ;14.418 ;10.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 342 ; 0.067 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2548 ; 0.006 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 468 ; 0.001 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 482 ; 0.223 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 43 ; 0.216 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 1148 ; 0.185 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 104 ; 0.138 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): 3 ; 0.057 ; 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): 1095 ; 2.388 ; 3.385 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 1095 ; 2.388 ; 3.385 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1367 ; 3.415 ; 6.071 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): 1368 ; 3.415 ; 6.072 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1191 ; 3.317 ; 3.885 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): 1192 ; 3.315 ; 3.886 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 1719 ; 5.310 ; 6.924 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): 1720 ; 5.309 ; 6.925 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 8XF4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 14-DEC-23. REMARK 100 THE DEPOSITION ID IS D_1300043354. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 27-MAY-22 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : PHOTON FACTORY REMARK 200 BEAMLINE : BL-5A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0000 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS3 S 2M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS JAN 10, 2022 BUILT=20220120 REMARK 200 DATA SCALING SOFTWARE : AIMLESS 0.7.13 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17418 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 45.800 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.6 REMARK 200 DATA REDUNDANCY : 13.20 REMARK 200 R MERGE (I) : 0.07500 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 25.2000 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) : 2.05 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.99600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: 8XEU REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 38.06 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.99 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 150 MM KSCN 30% PEG-MME 2000, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 293.15K 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 29.98700 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 33.96300 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 31.04950 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 33.96300 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 29.98700 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 31.04950 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 SER A 28 REMARK 465 ASN A 29 REMARK 465 THR A 30 REMARK 465 ALA A 31 REMARK 465 SER A 32 REMARK 465 LYS A 33 REMARK 465 SER A 34 REMARK 465 GLU A 309 REMARK 465 ASN A 310 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 ARG A 138 -7.75 85.46 REMARK 500 LYS A 155 37.67 -146.23 REMARK 500 GLU A 194 -119.83 55.20 REMARK 500 ASP A 203 37.93 -143.54 REMARK 500 SER A 259 -75.71 1.45 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 FE A 403 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 OX8 A 401 O10 REMARK 620 2 OX8 A 401 O28 83.5 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE A 404 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 OX8 A 401 O23 REMARK 620 2 OX8 A 401 O27 76.5 REMARK 620 3 OX8 A 402 N11 110.8 106.9 REMARK 620 4 OX8 A 402 O10 168.1 100.0 58.9 REMARK 620 5 OX8 A 402 O23 100.5 166.8 86.3 85.3 REMARK 620 6 OX8 A 402 O27 105.6 93.4 141.4 85.8 74.8 REMARK 620 7 OX8 A 402 O28 78.8 101.2 32.0 90.9 90.7 165.3 REMARK 620 N 1 2 3 4 5 6 DBREF1 8XF4 A 28 310 UNP A0A5S4TPK8_STRPY DBREF2 8XF4 A A0A5S4TPK8 28 310 SEQRES 1 A 283 SER ASN THR ALA SER LYS SER LEU SER PRO MET PRO GLN SEQRES 2 A 283 ILE ALA GLY VAL THR TYR TYR GLY ASP ILE PRO LYS GLN SEQRES 3 A 283 PRO LYS ARG VAL VAL SER LEU ALA SER THR TYR THR GLY SEQRES 4 A 283 TYR LEU LYS LYS LEU ASP MET ASN LEU VAL GLY VAL THR SEQRES 5 A 283 SER TYR ASP LYS LYS ASN PRO ILE LEU ALA LYS THR VAL SEQRES 6 A 283 LYS LYS ALA LYS GLN VAL ALA ALA THR ASP LEU GLU ALA SEQRES 7 A 283 ILE THR THR LEU LYS PRO ASP LEU ILE VAL VAL GLY SER SEQRES 8 A 283 THR GLU GLU ASN ILE LYS GLN LEU ALA GLU ILE ALA PRO SEQRES 9 A 283 VAL ILE SER ILE GLU TYR ARG LYS ARG ASP TYR LEU GLN SEQRES 10 A 283 VAL LEU SER ASP PHE GLY ARG ILE PHE ASN LYS GLU GLY SEQRES 11 A 283 LYS ALA LYS LYS TRP LEU LYS ASP TRP LYS THR LYS THR SEQRES 12 A 283 ALA ALA TYR GLU LYS GLU VAL LYS ALA VAL THR GLY ASP SEQRES 13 A 283 LYS ALA THR PHE THR ILE MET GLY LEU TYR GLU LYS ASP SEQRES 14 A 283 VAL TYR LEU PHE GLY LYS ASP TRP GLY ARG GLY GLY GLU SEQRES 15 A 283 ILE ILE HIS GLN ALA PHE HIS TYR ASP ALA PRO GLU LYS SEQRES 16 A 283 VAL LYS THR GLU VAL PHE LYS GLN GLY TYR LEU SER LEU SEQRES 17 A 283 SER GLN GLU VAL LEU PRO ASP TYR ILE GLY ASP TYR VAL SEQRES 18 A 283 VAL ILE ALA ALA GLU ASP ASP LYS THR GLY SER ALA LEU SEQRES 19 A 283 TYR GLU SER LYS LEU TRP GLN SER ILE PRO ALA VAL LYS SEQRES 20 A 283 LYS HIS HIS VAL ILE LYS VAL ASN ALA ASN VAL PHE TYR SEQRES 21 A 283 PHE THR ASP PRO LEU SER LEU GLU TYR GLN LEU GLU THR SEQRES 22 A 283 LEU ARG GLU ALA ILE LEU SER SER GLU ASN HET OX8 A 401 28 HET OX8 A 402 28 HET FE A 403 1 HET FE A 404 1 HETNAM OX8 1,12-BIS(OXIDANYL)-1,6,12,17-TETRAZACYCLODOCOSANE-2,5, HETNAM 2 OX8 13,16-TETRONE HETNAM FE FE (III) ION FORMUL 2 OX8 2(C18 H32 N4 O6) FORMUL 4 FE 2(FE 3+) FORMUL 6 HOH *89(H2 O) HELIX 1 AA1 ALA A 61 LEU A 71 1 11 HELIX 2 AA2 THR A 79 ASN A 85 1 7 HELIX 3 AA3 ILE A 87 LYS A 93 5 7 HELIX 4 AA4 ASP A 102 LEU A 109 1 8 HELIX 5 AA5 ASN A 122 GLU A 128 1 7 HELIX 6 AA6 LEU A 143 PHE A 153 1 11 HELIX 7 AA7 LYS A 155 GLY A 182 1 28 HELIX 8 AA8 GLY A 207 GLN A 213 1 7 HELIX 9 AA9 PRO A 220 VAL A 227 1 8 HELIX 10 AB1 SER A 236 ILE A 244 5 9 HELIX 11 AB2 GLY A 258 GLU A 263 1 6 HELIX 12 AB3 SER A 264 SER A 269 1 6 HELIX 13 AB4 ILE A 270 LYS A 275 1 6 HELIX 14 AB5 ALA A 283 TYR A 287 1 5 HELIX 15 AB6 ASP A 290 SER A 308 1 19 SHEET 1 AA1 6 VAL A 44 TYR A 47 0 SHEET 2 AA1 6 VAL A 132 ILE A 135 -1 O SER A 134 N THR A 45 SHEET 3 AA1 6 LEU A 113 GLY A 117 1 N ILE A 114 O ILE A 133 SHEET 4 AA1 6 VAL A 57 SER A 59 1 N VAL A 58 O LEU A 113 SHEET 5 AA1 6 LEU A 75 VAL A 78 1 O GLY A 77 N SER A 59 SHEET 6 AA1 6 LYS A 96 GLN A 97 1 O LYS A 96 N VAL A 76 SHEET 1 AA2 5 TYR A 232 SER A 234 0 SHEET 2 AA2 5 ASP A 196 PHE A 200 -1 N LEU A 199 O LEU A 233 SHEET 3 AA2 5 PHE A 187 TYR A 193 -1 N TYR A 193 O ASP A 196 SHEET 4 AA2 5 TYR A 247 ALA A 252 1 O VAL A 249 N MET A 190 SHEET 5 AA2 5 VAL A 278 ASN A 282 1 O ILE A 279 N VAL A 248 LINK O10 OX8 A 401 FE FE A 403 1555 1555 1.86 LINK O28 OX8 A 401 FE FE A 403 1555 1555 2.22 LINK O23 OX8 A 401 FE FE A 404 1555 1555 2.12 LINK O27 OX8 A 401 FE FE A 404 1555 1555 1.96 LINK N11 OX8 A 402 FE FE A 404 1555 1555 2.64 LINK O10 OX8 A 402 FE FE A 404 1555 1555 2.10 LINK O23 OX8 A 402 FE FE A 404 1555 1555 2.18 LINK O27 OX8 A 402 FE FE A 404 1555 1555 1.96 LINK O28 OX8 A 402 FE FE A 404 1555 1555 2.02 CRYST1 59.974 62.099 67.926 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 0.016674 0.000000 0.000000 0.00000 SCALE2 0.000000 0.016103 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014722 0.00000