HEADER METAL TRANSPORT 04-SEP-00 1FQF TITLE CRYSTAL STRUCTURES OF MUTANT (K296A) THAT ABOLISH THE DILYSINE TITLE 2 INTERACTION IN THE N-LOBE OF HUMAN TRANSFERRIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: SEROTRANSFERRIN; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: N-LOBE; COMPND 5 SYNONYM: SERUM TRANSFERRIN; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 EXPRESSION_SYSTEM: MESOCRICETUS AURATUS; SOURCE 6 EXPRESSION_SYSTEM_COMMON: GOLDEN HAMSTER; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 10036; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PNUT-BHK KEYWDS IRON TRANSPORT, TRANSFERRIN, N-LOBE, IRON-RELEASE, DILYSINE KEYWDS 2 INTERACTION, METAL TRANSPORT EXPDTA X-RAY DIFFRACTION AUTHOR D.NURIZZO,H.M.BAKER,E.N.BAKER REVDAT 5 20-NOV-24 1FQF 1 REMARK REVDAT 4 03-NOV-21 1FQF 1 REMARK SEQADV LINK REVDAT 3 01-FEB-17 1FQF 1 AUTHOR VERSN REVDAT 2 24-FEB-09 1FQF 1 VERSN REVDAT 1 16-MAY-01 1FQF 0 JRNL AUTH D.NURIZZO,H.M.BAKER,Q.Y.HE,R.T.MACGILLIVRAY,A.B.MASON, JRNL AUTH 2 R.C.WOODWORTH,E.N.BAKER JRNL TITL CRYSTAL STRUCTURES AND IRON RELEASE PROPERTIES OF MUTANTS JRNL TITL 2 (K206A AND K296A) THAT ABOLISH THE DILYSINE INTERACTION IN JRNL TITL 3 THE N-LOBE OF HUMAN TRANSFERRIN. JRNL REF BIOCHEMISTRY V. 40 1616 2001 JRNL REFN ISSN 0006-2960 JRNL PMID 11327820 JRNL DOI 10.1021/BI002050M REMARK 2 REMARK 2 RESOLUTION. 2.10 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) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 95.0 REMARK 3 NUMBER OF REFLECTIONS : 19092 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.212 REMARK 3 FREE R VALUE : 0.295 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 761 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL 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) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2547 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 5 REMARK 3 SOLVENT ATOMS : 278 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 33.03 REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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 COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : 1.180 REMARK 3 IMPROPER ANGLES (DEGREES) : 23.20 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL 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.PARAM REMARK 3 PARAMETER FILE 2 : CARBONATE.PARAM REMARK 3 PARAMETER FILE 3 : WATER.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1FQF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-SEP-00. REMARK 100 THE DEPOSITION ID IS D_1000011818. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-FEB-00 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 7.4 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 RU300 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 : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALA, CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 19129 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.100 REMARK 200 RESOLUTION RANGE LOW (A) : 15.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.200 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.0 REMARK 200 DATA REDUNDANCY : 2.900 REMARK 200 R MERGE (I) : 0.06200 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 8.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.21 REMARK 200 COMPLETENESS FOR SHELL (%) : 87.1 REMARK 200 DATA REDUNDANCY IN SHELL : 2.20 REMARK 200 R MERGE FOR SHELL (I) : 0.30100 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 (%): 46.03 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.28 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 18% POLYETHYLENEGLYCOL 3350, 100MM REMARK 280 POTASSIUM ACETATE, PH 7.4, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 293K 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 22.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 66.45000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 28.50000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 66.45000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 22.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 28.50000 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 REMARK 300 MONOMER CONSTITUTED BY TWO REMARK 300 DOMAINS IN BETWEEN THE IRON REMARK 300 AND ITS CARBONATE COUNTERPART REMARK 300 ARE LINKED. 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 VAL A 1 REMARK 465 PRO A 2 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 PRO A 307 C - N - CA ANGL. DEV. = 9.3 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 LYS A 4 51.86 -107.99 REMARK 500 SER A 12 -177.33 84.63 REMARK 500 SER A 12 -177.70 84.63 REMARK 500 TYR A 85 -169.87 -114.81 REMARK 500 THR A 93 42.68 -90.32 REMARK 500 SER A 125 -86.33 -48.81 REMARK 500 TRP A 128 -53.24 -138.25 REMARK 500 SER A 155 46.10 -109.94 REMARK 500 CYS A 161 -6.49 82.87 REMARK 500 PRO A 175 126.33 -37.00 REMARK 500 CYS A 179 40.91 -94.99 REMARK 500 VAL A 205 -165.68 -128.26 REMARK 500 GLU A 237 55.17 -98.14 REMARK 500 CYS A 241 71.89 -105.92 REMARK 500 SER A 287 146.84 -173.11 REMARK 500 LEU A 294 -51.14 70.37 REMARK 500 PRO A 306 154.63 -49.75 REMARK 500 GLU A 328 -143.20 -81.06 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 500 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 63 OD1 REMARK 620 2 TYR A 95 OH 95.2 REMARK 620 3 TYR A 188 OH 173.7 90.9 REMARK 620 4 HIS A 249 NE2 93.2 96.9 87.5 REMARK 620 5 CO3 A 600 O3 88.3 96.1 89.6 166.7 REMARK 620 6 CO3 A 600 O2 79.8 157.6 93.9 105.1 62.1 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE A 500 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CO3 A 600 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1FQF RELATED DB: PDB REMARK 900 1FQF CONTAINS K206A HUMAN SERUM TRANSFERRIN. REMARK 900 RELATED ID: 1A8E RELATED DB: PDB REMARK 900 1A8E CONTAINS WILDTYPE HUMAN SERUM TRANSFERRIN. DBREF 1FQF A 1 331 UNP P02787 TRFE_HUMAN 20 350 SEQADV 1FQF ALA A 296 UNP P02787 LYS 315 ENGINEERED MUTATION SEQRES 1 A 331 VAL PRO ASP LYS THR VAL ARG TRP CYS ALA VAL SER GLU SEQRES 2 A 331 HIS GLU ALA THR LYS CYS GLN SER PHE ARG ASP HIS MET SEQRES 3 A 331 LYS SER VAL ILE PRO SER ASP GLY PRO SER VAL ALA CYS SEQRES 4 A 331 VAL LYS LYS ALA SER TYR LEU ASP CYS ILE ARG ALA ILE SEQRES 5 A 331 ALA ALA ASN GLU ALA ASP ALA VAL THR LEU ASP ALA GLY SEQRES 6 A 331 LEU VAL TYR ASP ALA TYR LEU ALA PRO ASN ASN LEU LYS SEQRES 7 A 331 PRO VAL VAL ALA GLU PHE TYR GLY SER LYS GLU ASP PRO SEQRES 8 A 331 GLN THR PHE TYR TYR ALA VAL ALA VAL VAL LYS LYS ASP SEQRES 9 A 331 SER GLY PHE GLN MET ASN GLN LEU ARG GLY LYS LYS SER SEQRES 10 A 331 CYS HIS THR GLY LEU GLY ARG SER ALA GLY TRP ASN ILE SEQRES 11 A 331 PRO ILE GLY LEU LEU TYR CYS ASP LEU PRO GLU PRO ARG SEQRES 12 A 331 LYS PRO LEU GLU LYS ALA VAL ALA ASN PHE PHE SER GLY SEQRES 13 A 331 SER CYS ALA PRO CYS ALA ASP GLY THR ASP PHE PRO GLN SEQRES 14 A 331 LEU CYS GLN LEU CYS PRO GLY CYS GLY CYS SER THR LEU SEQRES 15 A 331 ASN GLN TYR PHE GLY TYR SER GLY ALA PHE LYS CYS LEU SEQRES 16 A 331 LYS ASP GLY ALA GLY ASP VAL ALA PHE VAL LYS HIS SER SEQRES 17 A 331 THR ILE PHE GLU ASN LEU ALA ASN LYS ALA ASP ARG ASP SEQRES 18 A 331 GLN TYR GLU LEU LEU CYS LEU ASP ASN THR ARG LYS PRO SEQRES 19 A 331 VAL ASP GLU TYR LYS ASP CYS HIS LEU ALA GLN VAL PRO SEQRES 20 A 331 SER HIS THR VAL VAL ALA ARG SER MET GLY GLY LYS GLU SEQRES 21 A 331 ASP LEU ILE TRP GLU LEU LEU ASN GLN ALA GLN GLU HIS SEQRES 22 A 331 PHE GLY LYS ASP LYS SER LYS GLU PHE GLN LEU PHE SER SEQRES 23 A 331 SER PRO HIS GLY LYS ASP LEU LEU PHE ALA ASP SER ALA SEQRES 24 A 331 HIS GLY PHE LEU LYS VAL PRO PRO ARG MET ASP ALA LYS SEQRES 25 A 331 MET TYR LEU GLY TYR GLU TYR VAL THR ALA ILE ARG ASN SEQRES 26 A 331 LEU ARG GLU GLY THR CYS HET FE A 500 1 HET CO3 A 600 4 HETNAM FE FE (III) ION HETNAM CO3 CARBONATE ION FORMUL 2 FE FE 3+ FORMUL 3 CO3 C O3 2- FORMUL 4 HOH *278(H2 O) HELIX 1 1 SER A 12 ILE A 30 1 19 HELIX 2 2 SER A 44 ALA A 54 1 11 HELIX 3 3 ASP A 63 LEU A 72 1 10 HELIX 4 4 GLN A 108 LEU A 112 5 5 HELIX 5 5 TRP A 128 TYR A 136 1 9 HELIX 6 6 CYS A 137 LEU A 139 5 3 HELIX 7 7 PRO A 145 PHE A 154 1 10 HELIX 8 8 PHE A 167 GLN A 172 5 6 HELIX 9 9 GLY A 187 ASP A 197 1 11 HELIX 10 10 SER A 208 LEU A 214 1 7 HELIX 11 11 ASN A 216 ASP A 221 1 6 HELIX 12 12 LYS A 259 GLY A 275 1 17 HELIX 13 13 ASP A 310 GLY A 316 1 7 HELIX 14 14 GLY A 316 GLU A 328 1 13 SHEET 1 A 2 THR A 5 VAL A 11 0 SHEET 2 A 2 SER A 36 LYS A 42 1 O SER A 36 N VAL A 6 SHEET 1 B 4 VAL A 60 LEU A 62 0 SHEET 2 B 4 THR A 250 ARG A 254 -1 O THR A 250 N LEU A 62 SHEET 3 B 4 LEU A 77 GLY A 86 -1 N LYS A 78 O ALA A 253 SHEET 4 B 4 PRO A 91 GLN A 92 -1 N GLN A 92 O TYR A 85 SHEET 1 C 4 VAL A 60 LEU A 62 0 SHEET 2 C 4 THR A 250 ARG A 254 -1 O THR A 250 N LEU A 62 SHEET 3 C 4 LEU A 77 GLY A 86 -1 N LYS A 78 O ALA A 253 SHEET 4 C 4 GLY A 301 LYS A 304 -1 O GLY A 301 N PHE A 84 SHEET 1 D 6 SER A 157 CYS A 158 0 SHEET 2 D 6 SER A 117 HIS A 119 1 O SER A 117 N CYS A 158 SHEET 3 D 6 VAL A 202 LYS A 206 1 O VAL A 202 N CYS A 118 SHEET 4 D 6 PHE A 94 LYS A 102 -1 N VAL A 98 O VAL A 205 SHEET 5 D 6 TYR A 223 LEU A 226 -1 N GLU A 224 O VAL A 101 SHEET 6 D 6 ARG A 232 PRO A 234 -1 O LYS A 233 N LEU A 225 SHEET 1 E 5 SER A 157 CYS A 158 0 SHEET 2 E 5 SER A 117 HIS A 119 1 O SER A 117 N CYS A 158 SHEET 3 E 5 VAL A 202 LYS A 206 1 O VAL A 202 N CYS A 118 SHEET 4 E 5 PHE A 94 LYS A 102 -1 N VAL A 98 O VAL A 205 SHEET 5 E 5 ALA A 244 PRO A 247 -1 O ALA A 244 N ALA A 97 SSBOND 1 CYS A 9 CYS A 48 1555 1555 2.02 SSBOND 2 CYS A 19 CYS A 39 1555 1555 2.03 SSBOND 3 CYS A 118 CYS A 194 1555 1555 2.03 SSBOND 4 CYS A 137 CYS A 331 1555 1555 2.03 SSBOND 5 CYS A 158 CYS A 174 1555 1555 2.03 SSBOND 6 CYS A 161 CYS A 179 1555 1555 2.03 SSBOND 7 CYS A 171 CYS A 177 1555 1555 2.04 SSBOND 8 CYS A 227 CYS A 241 1555 1555 2.03 LINK OD1 ASP A 63 FE FE A 500 1555 1555 1.94 LINK OH TYR A 95 FE FE A 500 1555 1555 2.02 LINK OH TYR A 188 FE FE A 500 1555 1555 2.05 LINK NE2 HIS A 249 FE FE A 500 1555 1555 2.09 LINK FE FE A 500 O3 CO3 A 600 1555 1555 2.01 LINK FE FE A 500 O2 CO3 A 600 1555 1555 2.37 CISPEP 1 ALA A 73 PRO A 74 0 -0.63 CISPEP 2 GLU A 141 PRO A 142 0 -0.17 CISPEP 3 LYS A 144 PRO A 145 0 -0.47 SITE 1 AC1 5 ASP A 63 TYR A 95 TYR A 188 HIS A 249 SITE 2 AC1 5 CO3 A 600 SITE 1 AC2 10 ASP A 63 TYR A 95 THR A 120 ARG A 124 SITE 2 AC2 10 SER A 125 ALA A 126 GLY A 127 TYR A 188 SITE 3 AC2 10 HIS A 249 FE A 500 CRYST1 44.000 57.000 132.900 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 0.022727 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017544 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007524 0.00000