HEADER HYDROLASE 08-FEB-08 3C80 TITLE T4 LYSOZYME MUTANT R96Y AT ROOM TEMPERATURE COMPND MOL_ID: 1; COMPND 2 MOLECULE: LYSOZYME; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: LYSIS PROTEIN, MURAMIDASE, ENDOLYSIN; COMPND 5 EC: 3.2.1.17; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACTERIOPHAGE T4; SOURCE 3 ORGANISM_COMMON: VIRUS; SOURCE 4 GENE: E; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: RR1; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PHS1403 KEYWDS BACTERIOPHAGE T4 LYSOZYME, VIRAL LYSOZYME, MUTATIONAL ANALYSIS, KEYWDS 2 PROTEIN ENGINEERING, THERMAL STABILITY, PROTEIN STABILITY, PROTEIN KEYWDS 3 ELECTROSTATICS, PROTEIN STRUCTURE, CATION BINDING, CHARGE BURIAL, KEYWDS 4 HYDROGEN BONDING, HELIX DIPOLE, PROTEIN CREVICES, STERIC STRAIN, KEYWDS 5 TEMPERATURE-SENSITIVE MUTANT, ANTIMICROBIAL, BACTERIOLYTIC ENZYME, KEYWDS 6 GLYCOSIDASE, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR B.H.M.MOOERS REVDAT 4 30-AUG-23 3C80 1 REMARK REVDAT 3 20-OCT-21 3C80 1 REMARK SEQADV REVDAT 2 05-MAY-09 3C80 1 JRNL REVDAT 1 17-FEB-09 3C80 0 JRNL AUTH B.H.MOOERS,W.A.BAASE,J.W.WRAY,B.W.MATTHEWS JRNL TITL CONTRIBUTIONS OF ALL 20 AMINO ACIDS AT SITE 96 TO THE JRNL TITL 2 STABILITY AND STRUCTURE OF T4 LYSOZYME. JRNL REF PROTEIN SCI. V. 18 871 2009 JRNL REFN ISSN 0961-8368 JRNL PMID 19384988 JRNL DOI 10.1002/PRO.94 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH B.H.MOOERS,D.E.TRONRUD,B.W.MATTHEWS REMARK 1 TITL EVALUATION AT ATOMIC RESOLUTION OF THE ROLE OF STRAIN IN REMARK 1 TITL 2 DESTABILIZING THE TEMPERATURE-SENSITIVE T4 LYSOZYME MUTANT REMARK 1 TITL 3 ARG 96 --> HIS. REMARK 1 REF PROTEIN SCI. V. 18 863 2009 REMARK 1 REFN ISSN 0961-8368 REMARK 1 PMID 19384984 REMARK 1 DOI 10.1002/PRO.93 REMARK 2 REMARK 2 RESOLUTION. 1.99 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : TNT REMARK 3 AUTHORS : TRONRUD,TEN EYCK,MATTHEWS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.99 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.76 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 90.2 REMARK 3 NUMBER OF REFLECTIONS : 13030 REMARK 3 REMARK 3 USING DATA ABOVE SIGMA CUTOFF. REMARK 3 CROSS-VALIDATION METHOD : FWT-FMUT DIFFERENCE MAPS REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.199 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 USING ALL DATA, NO SIGMA CUTOFF. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.1990 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 14040 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1293 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 110 REMARK 3 REMARK 3 WILSON B VALUE (FROM FCALC, A**2) : 22.220 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. RMS WEIGHT COUNT REMARK 3 BOND LENGTHS (A) : 0.010 ; NULL ; NULL REMARK 3 BOND ANGLES (DEGREES) : 1.216 ; NULL ; NULL REMARK 3 TORSION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 TRIGONAL CARBON PLANES (A) : NULL ; NULL ; NULL REMARK 3 GENERAL PLANES (A) : NULL ; NULL ; NULL REMARK 3 ISOTROPIC THERMAL FACTORS (A**2) : NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS (A) : NULL ; NULL ; NULL REMARK 3 REMARK 3 INCORRECT CHIRAL-CENTERS (COUNT) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : 0.85 REMARK 3 BSOL : 97.64 REMARK 3 REMARK 3 RESTRAINT LIBRARIES. REMARK 3 STEREOCHEMISTRY : TNT5G REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NATIVE K = 0.8597 OVERALL B = 0.00000 REMARK 4 REMARK 4 3C80 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 19-FEB-08. REMARK 100 THE DEPOSITION ID IS D_1000046456. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 14-NOV-98 REMARK 200 TEMPERATURE (KELVIN) : 298.0 REMARK 200 PH : 6.70 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 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5414 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13030 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.990 REMARK 200 RESOLUTION RANGE LOW (A) : 19.760 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.2 REMARK 200 DATA REDUNDANCY : 6.100 REMARK 200 R MERGE (I) : 0.04800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 27.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.99 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.10 REMARK 200 COMPLETENESS FOR SHELL (%) : 65.5 REMARK 200 DATA REDUNDANCY IN SHELL : 6.10 REMARK 200 R MERGE FOR SHELL (I) : 0.10300 REMARK 200 R SYM FOR SHELL (I) : 0.10300 REMARK 200 FOR SHELL : 12.80 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: TNT REMARK 200 STARTING MODEL: 1L63 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 55.10 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.74 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 2 M NA/K PHOSPHATE PH 6.7 550 MM NACL REMARK 280 50 MM REDUCED BME, 50 MM OXIDIZED BME , VAPOR DIFFUSION, HANGING REMARK 280 DROP, TEMPERATURE 277K, PH 6.70 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 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+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+1/3 REMARK 290 6555 -X,-X+Y,-Z+2/3 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 64.68867 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 32.34433 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 32.34433 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 64.68867 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 ASN A 163 REMARK 465 LEU A 164 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 ILE A 29 72.47 -105.57 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 CL A 168 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 173 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BME A 600 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1L34 RELATED DB: PDB REMARK 900 MUTANT R96H LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 1L63 RELATED DB: PDB REMARK 900 WILDTYPE T4 LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C7W RELATED DB: PDB REMARK 900 MUTANT R96K LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C7Y RELATED DB: PDB REMARK 900 MUTANT R96A OF T4 LYSOZYME IN WILDTYPE BACKGROUND AT 298K REMARK 900 RELATED ID: 3C7Z RELATED DB: PDB REMARK 900 MUTANT D89A/R96H LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C81 RELATED DB: PDB REMARK 900 MUTANT K85A LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C82 RELATED DB: PDB REMARK 900 MUTANT K85A/R96H LYSOZYME AT ROOM REMARK 900 RELATED ID: 3C83 RELATED DB: PDB REMARK 900 MUTANT D89A LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C8Q RELATED DB: PDB REMARK 900 MUTANT R96D LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C8R RELATED DB: PDB REMARK 900 MUTANT R96G LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3C8S RELATED DB: PDB REMARK 900 MUTANT R96E LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3CDO RELATED DB: PDB REMARK 900 MUTANT R96V LYSOZYME AT LOW TEMPERATURE REMARK 900 RELATED ID: 3CDQ RELATED DB: PDB REMARK 900 MUTANT R96S LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3CDR RELATED DB: PDB REMARK 900 MUTANT R96Q LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3CDT RELATED DB: PDB REMARK 900 MUTANT R96N LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3CDV RELATED DB: PDB REMARK 900 MUTANT R96M LYSOZYME AT ROOM TEMPERATURE REMARK 900 RELATED ID: 3F8V RELATED DB: PDB REMARK 900 R96H AT 1.08 ANG REMARK 900 RELATED ID: 3F9L RELATED DB: PDB REMARK 900 D72A AT 1.19 ANG REMARK 900 RELATED ID: 3FA0 RELATED DB: PDB REMARK 900 WILD TYPE AT 1.09 ANG REMARK 900 RELATED ID: 3FAD RELATED DB: PDB REMARK 900 D72A/R96H AT 1.20 ANG REMARK 900 RELATED ID: 3FI5 RELATED DB: PDB REMARK 900 R96W AT 1.73 ANG DBREF 3C80 A 1 164 UNP P00720 LYS_BPT4 1 164 SEQADV 3C80 TYR A 96 UNP P00720 ARG 96 ENGINEERED MUTATION SEQRES 1 A 164 MET ASN ILE PHE GLU MET LEU ARG ILE ASP GLU GLY LEU SEQRES 2 A 164 ARG LEU LYS ILE TYR LYS ASP THR GLU GLY TYR TYR THR SEQRES 3 A 164 ILE GLY ILE GLY HIS LEU LEU THR LYS SER PRO SER LEU SEQRES 4 A 164 ASN ALA ALA LYS SER GLU LEU ASP LYS ALA ILE GLY ARG SEQRES 5 A 164 ASN CYS ASN GLY VAL ILE THR LYS ASP GLU ALA GLU LYS SEQRES 6 A 164 LEU PHE ASN GLN ASP VAL ASP ALA ALA VAL ARG GLY ILE SEQRES 7 A 164 LEU ARG ASN ALA LYS LEU LYS PRO VAL TYR ASP SER LEU SEQRES 8 A 164 ASP ALA VAL ARG TYR CYS ALA LEU ILE ASN MET VAL PHE SEQRES 9 A 164 GLN MET GLY GLU THR GLY VAL ALA GLY PHE THR ASN SER SEQRES 10 A 164 LEU ARG MET LEU GLN GLN LYS ARG TRP ASP GLU ALA ALA SEQRES 11 A 164 VAL ASN LEU ALA LYS SER ARG TRP TYR ASN GLN THR PRO SEQRES 12 A 164 ASN ARG ALA LYS ARG VAL ILE THR THR PHE ARG THR GLY SEQRES 13 A 164 THR TRP ASP ALA TYR LYS ASN LEU HET CL A 168 1 HET CL A 173 1 HET BME A 600 4 HETNAM CL CHLORIDE ION HETNAM BME BETA-MERCAPTOETHANOL FORMUL 2 CL 2(CL 1-) FORMUL 4 BME C2 H6 O S FORMUL 5 HOH *110(H2 O) HELIX 1 1 ASN A 2 GLY A 12 1 11 HELIX 2 2 SER A 38 GLY A 51 1 14 HELIX 3 3 THR A 59 ASN A 81 1 23 HELIX 4 4 LYS A 83 LEU A 91 1 9 HELIX 5 5 ASP A 92 GLY A 107 1 16 HELIX 6 6 GLY A 107 GLY A 113 1 7 HELIX 7 7 PHE A 114 LYS A 124 1 11 HELIX 8 8 ARG A 125 LYS A 135 1 11 HELIX 9 9 SER A 136 THR A 142 1 7 HELIX 10 10 THR A 142 GLY A 156 1 15 HELIX 11 11 TRP A 158 LYS A 162 5 5 SHEET 1 A 3 ARG A 14 LYS A 19 0 SHEET 2 A 3 TYR A 25 GLY A 28 -1 O THR A 26 N TYR A 18 SHEET 3 A 3 HIS A 31 LEU A 32 -1 O HIS A 31 N ILE A 27 SITE 1 AC1 5 LYS A 124 THR A 142 ASN A 144 ARG A 145 SITE 2 AC1 5 HOH A 209 SITE 1 AC2 2 LYS A 135 HOH A 215 SITE 1 AC3 2 ASP A 72 HOH A 195 CRYST1 60.433 60.433 97.033 90.00 90.00 120.00 P 32 2 1 6 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 0.016547 0.009554 0.000000 0.00000 SCALE2 0.000000 0.019107 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010306 0.00000