HEADER TOXIN 28-MAY-07 2Q2J TITLE CRYSTAL STRUCTURE OF PRTX-I, A PLA2 HOMOLOG FROM BOTHROPS PIRAJAI COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHOSPHOLIPASE A2 HOMOLOG 1; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: PIRATOXIN-I, PRTX-I, MYOTOXIN SIV-SP5 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOTHROPS PIRAJAI; SOURCE 3 ORGANISM_COMMON: SNAKE; SOURCE 4 ORGANISM_TAXID: 113192 KEYWDS MYOTOXIN, PLA2 LIKE, LYS49-PLA2, PHOSPHOLIPASE A2, TOXIN EXPDTA X-RAY DIFFRACTION AUTHOR J.I.DOS SANTOS,M.R.FONTES REVDAT 4 30-OCT-24 2Q2J 1 REMARK REVDAT 3 22-SEP-09 2Q2J 1 JRNL REVDAT 2 24-FEB-09 2Q2J 1 VERSN REVDAT 1 10-JUN-08 2Q2J 0 JRNL AUTH J.I.DOS SANTOS,A.M.SOARES,M.R.FONTES JRNL TITL COMPARATIVE STRUCTURAL STUDIES ON LYS49-PHOSPHOLIPASES A(2) JRNL TITL 2 FROM BOTHROPS GENUS REVEAL THEIR MYOTOXIC SITE. JRNL REF J.STRUCT.BIOL. V. 167 106 2009 JRNL REFN ISSN 1047-8477 JRNL PMID 19401234 JRNL DOI 10.1016/J.JSB.2009.04.003 REMARK 2 REMARK 2 RESOLUTION. 1.65 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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 : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.65 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 31.99 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1242775.980 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.7 REMARK 3 NUMBER OF REFLECTIONS : 28331 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) : 0.214 REMARK 3 FREE R VALUE : 0.258 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.900 REMARK 3 FREE R VALUE TEST SET COUNT : 1379 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 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) : 1.65 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.75 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 99.10 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4416 REMARK 3 BIN R VALUE (WORKING SET) : 0.2880 REMARK 3 BIN FREE R VALUE : 0.3370 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.10 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 235 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.022 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1848 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 21 REMARK 3 SOLVENT ATOMS : 400 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 32.30 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 34.40 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -1.15000 REMARK 3 B22 (A**2) : -1.15000 REMARK 3 B33 (A**2) : 2.30000 REMARK 3 B12 (A**2) : -1.17000 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) : 0.22 REMARK 3 ESD FROM SIGMAA (A) : 0.17 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) : 0.27 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.21 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.014 REMARK 3 BOND ANGLES (DEGREES) : 2.000 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.50 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.220 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) : 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 : FLAT MODEL REMARK 3 KSOL : 0.36 REMARK 3 BSOL : 65.10 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 : TMN_PAR.TXT REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER_REP.TOP REMARK 3 TOPOLOGY FILE 3 : TMN_PAR.TOP REMARK 3 TOPOLOGY FILE 4 : ION.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 2Q2J COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-MAY-07. REMARK 100 THE DEPOSITION ID IS D_1000043067. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-AUG-06 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.8 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : LNLS REMARK 200 BEAMLINE : D03B-MX1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.427 REMARK 200 MONOCHROMATOR : MIRRORS REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MAR CCD 165 MM REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 25830 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.650 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.65 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.71 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.23 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.09 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M TRIS HCL, 30% PEG 4000, 0.2M REMARK 280 LITHIUM SULFATE, PH 7.8, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 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+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 42.63767 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 85.27533 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 85.27533 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 42.63767 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: 1950 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 12130 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -24.5 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 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 PHE A 3 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LYS A 69 CG CD CE NZ REMARK 470 LYS A 70 CG CD CE NZ REMARK 470 GLU A 86 CB CG CD OE1 OE2 REMARK 470 PHE A 125 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ARG B 34 CG CD NE CZ NH1 NH2 REMARK 470 LYS B 53 CG CD CE NZ REMARK 470 LYS B 57 CG CD CE NZ REMARK 470 LYS B 70 CB CG CD CE NZ REMARK 470 LYS B 115 CG CD CE NZ REMARK 470 LYS B 116 CG CD CE NZ REMARK 470 LYS B 127 CG CD CE NZ REMARK 470 LYS B 129 CG CD CE NZ REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O HOH A 609 O HOH A 667 2.03 REMARK 500 REMARK 500 REMARK: NULL 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 B 616 O HOH B 616 5675 1.11 REMARK 500 O HOH B 589 O HOH B 589 5675 2.02 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 ALA A 24 76.34 -157.85 REMARK 500 ASN A 87 -129.67 46.33 REMARK 500 LYS A 122 128.49 -35.33 REMARK 500 ASP A 132 149.94 82.90 REMARK 500 VAL B 31 178.45 -54.74 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 500 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE TRS A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE TRS B 502 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PA0 RELATED DB: PDB REMARK 900 RELATED ID: 1PC9 RELATED DB: PDB REMARK 900 RELATED ID: 1OS4 RELATED DB: PDB REMARK 900 RELATED ID: 1XXS RELATED DB: PDB REMARK 900 RELATED ID: 1Y4L RELATED DB: PDB REMARK 900 RELATED ID: 1QLL RELATED DB: PDB REMARK 999 REMARK 999 SEQUENCE REMARK 999 AUTHORS STATE THAT ELECTRON DENSITY SHOWS REMARK 999 THAT RESIDUE AT POSITION 116 IS INDEED LYS. DBREF 2Q2J A 1 133 UNP P58399 PA21B_BOTPI 1 121 DBREF 2Q2J B 1 133 UNP P58399 PA21B_BOTPI 1 121 SEQADV 2Q2J LYS A 116 UNP P58399 LEU 106 SEE REMARK 999 SEQADV 2Q2J LYS B 116 UNP P58399 LEU 106 SEE REMARK 999 SEQRES 1 A 121 SER LEU PHE GLU LEU GLY LYS MET ILE LEU GLN GLU THR SEQRES 2 A 121 GLY LYS ASN PRO ALA LYS SER TYR GLY ALA TYR GLY CYS SEQRES 3 A 121 ASN CYS GLY VAL LEU GLY ARG GLY LYS PRO LYS ASP ALA SEQRES 4 A 121 THR ASP ARG CYS CYS TYR VAL HIS LYS CYS CYS TYR LYS SEQRES 5 A 121 LYS LEU THR GLY CYS ASN PRO LYS LYS ASP ARG TYR SER SEQRES 6 A 121 TYR SER TRP LYS ASP LYS THR ILE VAL CYS GLY GLU ASN SEQRES 7 A 121 ASN PRO CYS LEU LYS GLU LEU CYS GLU CYS ASP LYS ALA SEQRES 8 A 121 VAL ALA ILE CYS LEU ARG GLU ASN LEU GLY THR TYR ASN SEQRES 9 A 121 LYS LYS TYR ARG TYR HIS LEU LYS PRO PHE CYS LYS LYS SEQRES 10 A 121 ALA ASP ASP CYS SEQRES 1 B 121 SER LEU PHE GLU LEU GLY LYS MET ILE LEU GLN GLU THR SEQRES 2 B 121 GLY LYS ASN PRO ALA LYS SER TYR GLY ALA TYR GLY CYS SEQRES 3 B 121 ASN CYS GLY VAL LEU GLY ARG GLY LYS PRO LYS ASP ALA SEQRES 4 B 121 THR ASP ARG CYS CYS TYR VAL HIS LYS CYS CYS TYR LYS SEQRES 5 B 121 LYS LEU THR GLY CYS ASN PRO LYS LYS ASP ARG TYR SER SEQRES 6 B 121 TYR SER TRP LYS ASP LYS THR ILE VAL CYS GLY GLU ASN SEQRES 7 B 121 ASN PRO CYS LEU LYS GLU LEU CYS GLU CYS ASP LYS ALA SEQRES 8 B 121 VAL ALA ILE CYS LEU ARG GLU ASN LEU GLY THR TYR ASN SEQRES 9 B 121 LYS LYS TYR ARG TYR HIS LEU LYS PRO PHE CYS LYS LYS SEQRES 10 B 121 ALA ASP ASP CYS HET SO4 A 500 5 HET TRS A 501 8 HET TRS B 502 8 HETNAM SO4 SULFATE ION HETNAM TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL HETSYN TRS TRIS BUFFER FORMUL 3 SO4 O4 S 2- FORMUL 4 TRS 2(C4 H12 N O3 1+) FORMUL 6 HOH *400(H2 O) HELIX 1 1 SER A 1 GLY A 15 1 14 HELIX 2 2 ASN A 17 GLY A 23 1 7 HELIX 3 3 ASP A 39 LEU A 58 1 17 HELIX 4 4 TRP A 77 THR A 81 5 5 HELIX 5 5 ASN A 88 ASN A 109 1 21 HELIX 6 6 LEU A 110 TYR A 113 5 4 HELIX 7 7 ASN A 114 ARG A 118 5 5 HELIX 8 8 SER B 1 GLY B 15 1 14 HELIX 9 9 ASN B 17 GLY B 23 1 7 HELIX 10 10 ASP B 39 LYS B 57 1 16 HELIX 11 11 ASN B 88 ASN B 109 1 21 HELIX 12 12 ASN B 114 ARG B 118 5 5 HELIX 13 13 LEU B 121 CYS B 126 5 5 SHEET 1 A 2 ALA A 24 TYR A 25 0 SHEET 2 A 2 CYS A 29 GLY A 30 -1 O CYS A 29 N TYR A 25 SHEET 1 B 2 TYR A 75 SER A 76 0 SHEET 2 B 2 VAL A 83 CYS A 84 -1 O VAL A 83 N SER A 76 SHEET 1 C 2 TYR B 75 LYS B 78 0 SHEET 2 C 2 THR B 81 CYS B 84 -1 O VAL B 83 N SER B 76 SSBOND 1 CYS A 27 CYS A 126 1555 1555 2.04 SSBOND 2 CYS A 29 CYS A 45 1555 1555 1.98 SSBOND 3 CYS A 44 CYS A 105 1555 1555 2.01 SSBOND 4 CYS A 50 CYS A 133 1555 1555 2.04 SSBOND 5 CYS A 51 CYS A 98 1555 1555 2.01 SSBOND 6 CYS A 61 CYS A 91 1555 1555 2.04 SSBOND 7 CYS A 84 CYS A 96 1555 1555 2.03 SSBOND 8 CYS B 27 CYS B 126 1555 1555 2.02 SSBOND 9 CYS B 29 CYS B 45 1555 1555 2.03 SSBOND 10 CYS B 44 CYS B 105 1555 1555 2.03 SSBOND 11 CYS B 50 CYS B 133 1555 1555 2.01 SSBOND 12 CYS B 51 CYS B 98 1555 1555 2.03 SSBOND 13 CYS B 61 CYS B 91 1555 1555 2.00 SSBOND 14 CYS B 84 CYS B 96 1555 1555 2.03 SITE 1 AC1 3 LYS A 20 LYS A 115 ARG A 118 SITE 1 AC2 6 LYS A 16 ASN A 17 SER A 21 HOH A 595 SITE 2 AC2 6 HOH A 635 HOH B 544 SITE 1 AC3 9 LYS A 7 HOH A 543 GLY B 15 LYS B 16 SITE 2 AC3 9 ASN B 17 LYS B 20 SER B 21 HOH B 646 SITE 3 AC3 9 HOH B 659 CRYST1 55.883 55.883 127.913 90.00 90.00 120.00 P 31 2 1 12 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 0.017895 0.010331 0.000000 0.00000 SCALE2 0.000000 0.020663 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007818 0.00000