1K0Z - Header Asymmetric Unit

HEADER HYDROLASE 21-SEP-01 1K0Z

TITLE CRYSTAL STRUCTURE OF THE PVUII ENDONUCLEASE WITH PR3+ AND TITLE 2 SO4 IONS BOUND IN THE ACTIVE SITE AT 2.05A.

COMPND MOL_ID: 1; COMPND 2 MOLECULE: TYPE II RESTRICTION ENZYME PVUII; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: ENDONUCLEASE PVUII, R.PVUII; COMPND 5 EC: 3.1.21.4; COMPND 6 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: PROTEUS VULGARIS; SOURCE 3 ORGANISM_TAXID: 585; SOURCE 4 GENE: PVUIIR; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: HB101; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PPVU1 (PUC18 DERIVATIVE)

KEYWDS PVUII, ENDONUCLEASE, RESTRICTION ENZYME, CATALYSIS, IONS, KEYWDS 2 XRAYS, LANTHANADES, HYDROLASE

EXPDTA X-RAY DIFFRACTION

AUTHOR A.SPYRIDAKI,A.ATHANASIADIS,C.MATZEN,T.LANIO,A.JELTSCH, AUTHOR 2 A.SIMONCSITS,E.SCHEURING-VANAMEE,M.KOKKINIDIS,A.PINGOUD

REVDAT 3 24-FEB-09 1K0Z 1 VERSN REVDAT 2 28-FEB-06 1K0Z 1 JRNL REMARK REVDAT 1 17-JUN-03 1K0Z 0

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.ATHANASIADIS,M.VLASSI,D.KOTSIFAKI,P.A.TUCKER, REMARK 1 AUTH 2 K.S.WILSON,M.KOKKINIDIS REMARK 1 TITL CRYSTAL STRUCTURE OF PVUII ENDONUCLEASE REVEALS REMARK 1 TITL 2 EXTENSIVE STRUCTURAL HOMOLOGIES TO ECORV REMARK 1 REF NAT.STRUCT.BIOL. V. 1 469 1994 REMARK 1 REFN ISSN 1072-8368

REMARK 2 REMARK 2 RESOLUTION. 2.05 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) : 2.05 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 21.43 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1549630.950 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 79.1 REMARK 3 NUMBER OF REFLECTIONS : 21465 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) : 0.190 REMARK 3 FREE R VALUE : 0.236 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.100 REMARK 3 FREE R VALUE TEST SET COUNT : 2176 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 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) : 2.05 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.18 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 69.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2744 REMARK 3 BIN R VALUE (WORKING SET) : 0.2710 REMARK 3 BIN FREE R VALUE : 0.2850 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 11.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 339 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.015 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2521 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 12 REMARK 3 SOLVENT ATOMS : 189 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 26.71 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 34.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 4.85000 REMARK 3 B22 (A**2) : -1.25000 REMARK 3 B33 (A**2) : -3.60000 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 COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.24 REMARK 3 ESD FROM SIGMAA (A) : 0.27 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) : 0.28 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.28 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.30 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.20 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.76 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) : 1.560 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.590 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.290 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.580 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.32 REMARK 3 BSOL : 50.94 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 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1K0Z COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-SEP-01. REMARK 100 THE RCSB ID CODE IS RCSB014423.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 23-AUG-95 REMARK 200 TEMPERATURE (KELVIN) : 277 REMARK 200 PH : 5.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ELETTRA REMARK 200 BEAMLINE : 5.2R REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0 REMARK 200 MONOCHROMATOR : SI111/SI220 REMARK 200 OPTICS : MONOCHROMATOR REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 24251 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.050 REMARK 200 RESOLUTION RANGE LOW (A) : 21.430 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 89.3 REMARK 200 DATA REDUNDANCY : 4.400 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.08900 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 7.2000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.05 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.11 REMARK 200 COMPLETENESS FOR SHELL (%) : 92.3 REMARK 200 DATA REDUNDANCY IN SHELL : 4.30 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.65700 REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: XTALVIEW REMARK 200 STARTING MODEL: PDB ENTRY 1PVU REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 57.23 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.88 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULFATE, AMMONIUM ACETATE, REMARK 280 PH 5.0, VAPOR DIFFUSION, TEMPERATURE 291K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 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 42.37000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 52.81500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 42.37000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 52.81500 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 4020 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 15540 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -88.0 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 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 234 LIES ON A SPECIAL POSITION.

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 2 REMARK 465 HIS A 3 REMARK 465 PRO A 4 REMARK 465 ARG A 54 REMARK 465 GLU A 55 REMARK 465 ARG B 54 REMARK 465 GLU B 55

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 O HOH A 219 O HOH A 219 2665 1.58 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 A 82 -85.50 -120.52 REMARK 500 HIS A 85 60.75 -113.19 REMARK 500 ASN A 141 73.93 21.66 REMARK 500 THR B 82 -88.96 -126.12 REMARK 500 ASP B 134 9.93 -67.44 REMARK 500 ASN B 141 70.21 39.25 REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH B 253 DISTANCE = 5.78 ANGSTROMS REMARK 525 HOH A 267 DISTANCE = 5.31 ANGSTROMS REMARK 525 HOH A 270 DISTANCE = 5.84 ANGSTROMS REMARK 525 HOH B 273 DISTANCE = 5.22 ANGSTROMS REMARK 525 HOH B 290 DISTANCE = 5.88 ANGSTROMS REMARK 525 HOH B 297 DISTANCE = 5.41 ANGSTROMS REMARK 525 HOH B 300 DISTANCE = 7.19 ANGSTROMS

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PR A 201 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 202 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PR B 203 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 204

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PVU RELATED DB: PDB REMARK 900 STRUCTURE OF THE FREE PVUII AT 2.4A REMARK 900 RELATED ID: 1PVI RELATED DB: PDB REMARK 900 STRUCTURE OF PVUII ENDONUCLEASE WITH COGNATE DNA. REMARK 900 RELATED ID: 1FOO RELATED DB: PDB REMARK 900 PVUII ENDONUCLEASE/COGNATE DNA COMPLEX (GLUTARALDEHYDE- REMARK 900 CROSSLINKED CRYSTAL) AT PH 7.5 WITH TWO CALCIUM IONS AT REMARK 900 EACH ACTIVE SITE REMARK 900 RELATED ID: 2PVI RELATED DB: PDB REMARK 900 PVUII ENDONUCLEASE COMPLEXED TO AN IODINATED COGNATE DNA REMARK 900 RELATED ID: 3PVI RELATED DB: PDB REMARK 900 D34G MUTANT OF PVUII ENDONUCLEASE COMPLEXED WITH COGNATE REMARK 900 DNA SHOWS THAT ASP34 IS DIRECTLY INVOLVED IN DNA REMARK 900 RECOGNITION AND INDIRECTLY INVOLVED IN CATALYSIS REMARK 900 RELATED ID: 1EYU RELATED DB: PDB REMARK 900 HIGH RESOLUTION STRUCTURE OF THE PVUII ENDONCULEASE/COGNATE REMARK 900 DNA COMPLEX AT PH 4.6

DBREF 1K0Z A 2 157 UNP P23657 T2P2_PROVU 2 157 DBREF 1K0Z B 2 157 UNP P23657 T2P2_PROVU 2 157

SEQRES 1 A 156 SER HIS PRO ASP LEU ASN LYS LEU LEU GLU LEU TRP PRO SEQRES 2 A 156 HIS ILE GLN GLU TYR GLN ASP LEU ALA LEU LYS HIS GLY SEQRES 3 A 156 ILE ASN ASP ILE PHE GLN ASP ASN GLY GLY LYS LEU LEU SEQRES 4 A 156 GLN VAL LEU LEU ILE THR GLY LEU THR VAL LEU PRO GLY SEQRES 5 A 156 ARG GLU GLY ASN ASP ALA VAL ASP ASN ALA GLY GLN GLU SEQRES 6 A 156 TYR GLU LEU LYS SER ILE ASN ILE ASP LEU THR LYS GLY SEQRES 7 A 156 PHE SER THR HIS HIS HIS MET ASN PRO VAL ILE ILE ALA SEQRES 8 A 156 LYS TYR ARG GLN VAL PRO TRP ILE PHE ALA ILE TYR ARG SEQRES 9 A 156 GLY ILE ALA ILE GLU ALA ILE TYR ARG LEU GLU PRO LYS SEQRES 10 A 156 ASP LEU GLU PHE TYR TYR ASP LYS TRP GLU ARG LYS TRP SEQRES 11 A 156 TYR SER ASP GLY HIS LYS ASP ILE ASN ASN PRO LYS ILE SEQRES 12 A 156 PRO VAL LYS TYR VAL MET GLU HIS GLY THR LYS ILE TYR SEQRES 1 B 156 SER HIS PRO ASP LEU ASN LYS LEU LEU GLU LEU TRP PRO SEQRES 2 B 156 HIS ILE GLN GLU TYR GLN ASP LEU ALA LEU LYS HIS GLY SEQRES 3 B 156 ILE ASN ASP ILE PHE GLN ASP ASN GLY GLY LYS LEU LEU SEQRES 4 B 156 GLN VAL LEU LEU ILE THR GLY LEU THR VAL LEU PRO GLY SEQRES 5 B 156 ARG GLU GLY ASN ASP ALA VAL ASP ASN ALA GLY GLN GLU SEQRES 6 B 156 TYR GLU LEU LYS SER ILE ASN ILE ASP LEU THR LYS GLY SEQRES 7 B 156 PHE SER THR HIS HIS HIS MET ASN PRO VAL ILE ILE ALA SEQRES 8 B 156 LYS TYR ARG GLN VAL PRO TRP ILE PHE ALA ILE TYR ARG SEQRES 9 B 156 GLY ILE ALA ILE GLU ALA ILE TYR ARG LEU GLU PRO LYS SEQRES 10 B 156 ASP LEU GLU PHE TYR TYR ASP LYS TRP GLU ARG LYS TRP SEQRES 11 B 156 TYR SER ASP GLY HIS LYS ASP ILE ASN ASN PRO LYS ILE SEQRES 12 B 156 PRO VAL LYS TYR VAL MET GLU HIS GLY THR LYS ILE TYR

HET PR A 201 1 HET SO4 A 202 5 HET PR B 203 1 HET SO4 B 204 5

HETNAM PR PRASEODYMIUM ION HETNAM SO4 SULFATE ION

FORMUL 3 PR 2(PR 3+) FORMUL 4 SO4 2(O4 S 2-) FORMUL 7 HOH *189(H2 O)

HELIX 1 1 ASP A 5 HIS A 26 1 22 HELIX 2 2 ASN A 35 GLY A 47 1 13 HELIX 3 3 ASN A 87 GLN A 96 1 10 HELIX 4 4 GLU A 116 ASP A 134 1 19 HELIX 5 5 VAL A 146 GLY A 153 1 8 HELIX 6 6 ASP B 5 HIS B 26 1 22 HELIX 7 7 ASN B 35 GLY B 47 1 13 HELIX 8 8 ASN B 87 ARG B 95 1 9 HELIX 9 9 GLU B 116 ASP B 134 1 19 HELIX 10 10 VAL B 146 GLY B 153 1 8

SHEET 1 A 6 THR A 49 VAL A 50 0 SHEET 2 A 6 ALA A 59 VAL A 60 -1 O VAL A 60 N THR A 49 SHEET 3 A 6 GLU A 66 ASN A 73 -1 O TYR A 67 N ALA A 59 SHEET 4 A 6 TRP A 99 ARG A 105 1 O ILE A 100 N GLU A 68 SHEET 5 A 6 ALA A 108 LEU A 115 -1 O GLU A 110 N ILE A 103 SHEET 6 A 6 THR A 154 TYR A 157 -1 O THR A 154 N ARG A 114 SHEET 1 B 2 GLY A 79 PHE A 80 0 SHEET 2 B 2 ILE A 144 PRO A 145 -1 O ILE A 144 N PHE A 80 SHEET 1 C 6 THR B 49 VAL B 50 0 SHEET 2 C 6 ALA B 59 VAL B 60 -1 O VAL B 60 N THR B 49 SHEET 3 C 6 GLU B 66 ASN B 73 -1 O TYR B 67 N ALA B 59 SHEET 4 C 6 TRP B 99 ARG B 105 1 O ILE B 100 N GLU B 68 SHEET 5 C 6 ALA B 108 LEU B 115 -1 O GLU B 110 N ILE B 103 SHEET 6 C 6 THR B 154 TYR B 157 -1 O TYR B 157 N ILE B 112 SHEET 1 D 2 GLY B 79 PHE B 80 0 SHEET 2 D 2 ILE B 144 PRO B 145 -1 O ILE B 144 N PHE B 80

SITE 1 AC1 5 GLY A 56 ASP A 58 GLU A 68 SO4 A 202 SITE 2 AC1 5 HOH A 281 SITE 1 AC2 7 GLY A 56 GLU A 68 LYS A 70 THR A 82 SITE 2 AC2 7 HIS A 83 TYR A 94 PR A 201 SITE 1 AC3 6 GLY B 56 ASP B 58 GLU B 68 SO4 B 204 SITE 2 AC3 6 HOH B 233 HOH B 296 SITE 1 AC4 6 GLY B 56 GLU B 68 LYS B 70 THR B 82 SITE 2 AC4 6 TYR B 94 PR B 203

CRYST1 84.740 105.630 46.900 90.00 90.00 90.00 P 21 21 2 8

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 0.011801 0.000000 0.000000 0.00000

SCALE2 0.000000 0.009467 0.000000 0.00000

SCALE3 0.000000 0.000000 0.021322 0.00000