HEADER HYDROLASE 08-MAY-07 2PU3 TITLE STRUCTURAL ADAPTATION OF ENDONUCLEASE I FROM THE COLD-ADAPTED AND TITLE 2 HALOPHILIC BACTERIUM VIBRIO SALMONICIDA COMPND MOL_ID: 1; COMPND 2 MOLECULE: ENDONUCLEASE I; COMPND 3 CHAIN: A; COMPND 4 EC: 3.1.21.1; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: VIBRIO SALMONICIDA; SOURCE 3 ORGANISM_TAXID: 316275; SOURCE 4 STRAIN: LFI1238; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: TOP10; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PBAD/GIII KEYWDS COLD ADAPTATION, SALT ADAPTATION, PSYCHROPHILIC ENZYMES, ENDONUCLEASE KEYWDS 2 I, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR B.ALTERMARK,R.HELLAND,E.MOE,N.P.WILLASSEN,A.O.SMALAS REVDAT 5 30-AUG-23 2PU3 1 REMARK LINK REVDAT 4 13-JUL-11 2PU3 1 VERSN REVDAT 3 24-FEB-09 2PU3 1 VERSN REVDAT 2 27-MAY-08 2PU3 1 JRNL REVDAT 1 18-MAR-08 2PU3 0 JRNL AUTH B.ALTERMARK,R.HELLAND,E.MOE,N.P.WILLASSEN,A.O.SMALAS JRNL TITL STRUCTURAL ADAPTATION OF ENDONUCLEASE I FROM THE JRNL TITL 2 COLD-ADAPTED AND HALOPHILIC BACTERIUM VIBRIO SALMONICIDA. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 64 368 2008 JRNL REFN ISSN 0907-4449 JRNL PMID 18391403 JRNL DOI 10.1107/S0907444908000097 REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0019 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 33.92 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 3 NUMBER OF REFLECTIONS : 30823 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 + TEST SET) : 0.167 REMARK 3 R VALUE (WORKING SET) : 0.166 REMARK 3 FREE R VALUE : 0.185 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1549 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) : 1.50 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.54 REMARK 3 REFLECTION IN BIN (WORKING SET) : 2024 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 95.47 REMARK 3 BIN R VALUE (WORKING SET) : 0.1670 REMARK 3 BIN FREE R VALUE SET COUNT : 128 REMARK 3 BIN FREE R VALUE : 0.1980 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1704 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 259 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 10.24 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 10.92 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.11000 REMARK 3 B22 (A**2) : -0.11000 REMARK 3 B33 (A**2) : 0.22000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.04000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.079 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.075 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.040 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.015 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.953 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.939 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1826 ; 0.008 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 2472 ; 1.142 ; 1.911 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 224 ; 5.771 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 96 ;35.534 ;23.750 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 324 ;10.953 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 14 ;14.561 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 237 ; 0.082 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1445 ; 0.005 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 884 ; 0.190 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 1261 ; 0.305 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 175 ; 0.093 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 46 ; 0.168 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 30 ; 0.083 ; 0.200 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): 1105 ; 0.750 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1742 ; 1.207 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 836 ; 1.797 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 730 ; 2.897 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL 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 REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 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 THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 2PU3 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 22-MAY-07. REMARK 100 THE DEPOSITION ID IS D_1000042776. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 02-MAY-05 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.2 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : ID29 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0707 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 210 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 30823 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 33.923 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 200 DATA REDUNDANCY : 4.000 REMARK 200 R MERGE (I) : 0.04700 REMARK 200 R SYM (I) : 0.04700 REMARK 200 FOR THE DATA SET : 9.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.58 REMARK 200 COMPLETENESS FOR SHELL (%) : 97.6 REMARK 200 DATA REDUNDANCY IN SHELL : 3.70 REMARK 200 R MERGE FOR SHELL (I) : 0.07400 REMARK 200 R SYM FOR SHELL (I) : 0.07400 REMARK 200 FOR SHELL : 14.00 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: PDB ENTRY 1OUO REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.01 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.02 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30 % PEG 3350, 0.1 M TRIS, 0.25 M REMARK 280 SODIUM ACETATE, PH 8.2, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 22.47400 REMARK 290 SMTRY3 2 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 ALA A 19 REMARK 465 PRO A 20 REMARK 465 PRO A 21 REMARK 465 SER A 22 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 53 -27.79 -144.83 REMARK 500 LYS A 68 -31.54 -151.02 REMARK 500 LYS A 96 43.36 -93.86 REMARK 500 SER A 131 -131.07 53.39 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 MG A 300 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 79 OE1 REMARK 620 2 ASN A 127 OD1 87.2 REMARK 620 3 HOH A 506 O 99.9 84.8 REMARK 620 4 HOH A 509 O 85.4 172.5 95.9 REMARK 620 5 HOH A 553 O 171.9 97.4 87.3 90.1 REMARK 620 6 HOH A 556 O 89.3 91.4 169.8 89.2 83.8 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 MG A 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 302 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2G7E RELATED DB: PDB REMARK 900 ENDONUCLEASE I FROM VIBRIO CHOLERAE REMARK 900 RELATED ID: 2G7F RELATED DB: PDB REMARK 900 ENDONUCLEASE I FROM VIBRIO CHOLERAE REMARK 999 REMARK 999 SEQUENCE REMARK 999 THE RESIDUE NUMBERS IN THE ENTRY FOLLOW THAT REMARK 999 OF VIBRIO VULNIFICUS (PDB 1OUO) DBREF 2PU3 A 19 228 UNP Q2XSL7 Q2XSL7_9VIBR 22 232 SEQRES 1 A 211 ALA PRO PRO SER SER PHE SER LYS ALA LYS LYS GLU ALA SEQRES 2 A 211 VAL LYS ILE TYR LEU ASP TYR PRO THR SER PHE TYR CYS SEQRES 3 A 211 GLY CYS ASP ILE THR TRP LYS ASN LYS LYS LYS GLY ILE SEQRES 4 A 211 PRO GLU LEU GLU SER CYS GLY TYR GLN VAL ARG LYS GLN SEQRES 5 A 211 GLU LYS ARG ALA SER ARG ILE GLU TRP GLU HIS VAL VAL SEQRES 6 A 211 PRO ALA TRP GLN PHE GLY HIS GLN ARG GLN CYS TRP GLN SEQRES 7 A 211 LYS GLY GLY ARG LYS ASN CYS THR ARG ASN ASP LYS GLN SEQRES 8 A 211 PHE LYS SER MET GLU ALA ASP LEU HIS ASN LEU VAL PRO SEQRES 9 A 211 ALA ILE GLY GLU VAL ASN GLY ASP ARG SER ASN PHE ARG SEQRES 10 A 211 PHE SER GLN TRP ASN GLY SER LYS GLY ALA PHE TYR GLY SEQRES 11 A 211 GLN CYS ALA PHE LYS VAL ASP PHE LYS GLY ARG VAL ALA SEQRES 12 A 211 GLU PRO PRO ALA GLN SER ARG GLY ALA ILE ALA ARG THR SEQRES 13 A 211 TYR LEU TYR MET ASN ASN GLU TYR LYS PHE ASN LEU SER SEQRES 14 A 211 LYS ALA GLN ARG GLN LEU MET GLU ALA TRP ASN LYS GLN SEQRES 15 A 211 TYR PRO VAL SER THR TRP GLU CYS THR ARG ASP GLU ARG SEQRES 16 A 211 ILE ALA LYS ILE GLN GLY ASN HIS ASN GLN PHE VAL TYR SEQRES 17 A 211 LYS ALA CYS HET MG A 300 1 HET CL A 301 1 HET CL A 302 1 HETNAM MG MAGNESIUM ION HETNAM CL CHLORIDE ION FORMUL 2 MG MG 2+ FORMUL 3 CL 2(CL 1-) FORMUL 5 HOH *259(H2 O) HELIX 1 1 SER A 23 LEU A 36 1 14 HELIX 2 2 ASN A 52 LYS A 53 5 3 HELIX 3 3 GLN A 69 SER A 74 1 6 HELIX 4 4 PRO A 83 HIS A 89 1 7 HELIX 5 5 ARG A 91 LYS A 96 1 6 HELIX 6 6 GLY A 97 ASP A 106 1 10 HELIX 7 7 ASP A 106 ASP A 115 1 10 HELIX 8 8 GLY A 124 SER A 131 1 8 HELIX 9 9 PRO A 163 TYR A 181 1 19 HELIX 10 10 SER A 186 TYR A 200 1 15 HELIX 11 11 SER A 203 GLY A 218 1 16 HELIX 12 12 ASN A 221 LYS A 226 1 6 SHEET 1 A 2 ASP A 47 LYS A 51 0 SHEET 2 A 2 LYS A 54 GLU A 58 -1 O GLU A 58 N ASP A 47 SHEET 1 B 2 ILE A 76 HIS A 80 0 SHEET 2 B 2 LEU A 119 ILE A 123 -1 O VAL A 120 N GLU A 79 SHEET 1 C 3 ARG A 134 PHE A 135 0 SHEET 2 C 3 VAL A 159 GLU A 161 1 O ALA A 160 N ARG A 134 SHEET 3 C 3 LYS A 152 ASP A 154 -1 N ASP A 154 O VAL A 159 SSBOND 1 CYS A 44 CYS A 149 1555 1555 2.05 SSBOND 2 CYS A 46 CYS A 62 1555 1555 2.04 SSBOND 3 CYS A 93 CYS A 102 1555 1555 2.06 SSBOND 4 CYS A 207 CYS A 228 1555 1555 2.03 LINK OE1 GLU A 79 MG MG A 300 1555 1555 2.02 LINK OD1 ASN A 127 MG MG A 300 1555 1555 2.02 LINK MG MG A 300 O HOH A 506 1555 1555 2.07 LINK MG MG A 300 O HOH A 509 1555 1555 2.08 LINK MG MG A 300 O HOH A 553 1555 1555 2.11 LINK MG MG A 300 O HOH A 556 1555 1555 2.16 SITE 1 AC1 6 GLU A 79 ASN A 127 HOH A 506 HOH A 509 SITE 2 AC1 6 HOH A 553 HOH A 556 SITE 1 AC2 4 SER A 41 TYR A 43 CYS A 44 ILE A 123 SITE 1 AC3 2 GLN A 86 SER A 186 CRYST1 42.078 44.948 51.746 90.00 92.66 90.00 P 1 21 1 2 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 0.023765 0.000000 0.001103 0.00000 SCALE2 0.000000 0.022248 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019346 0.00000