HEADER HYDROLASE 30-APR-04 1T4M TITLE STRUCTURE OF A THERMOSTABLE DOUBLE MUTANT OF BACILLUS SUBTILIS LIPASE TITLE 2 OBTAINED THROUGH DIRECTED EVOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: LIPASE A; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: TRIACYLGLYCEROL LIPASE; COMPND 5 EC: 3.1.1.3; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS SUBTILIS; SOURCE 3 ORGANISM_TAXID: 1423; SOURCE 4 GENE: LIP A; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET-21B KEYWDS ALPHA/BETA HYDROLASE, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR E.RAJAKUMARA,R.SANKARANARAYANAN REVDAT 5 23-AUG-23 1T4M 1 REMARK REVDAT 4 27-OCT-21 1T4M 1 REMARK SEQADV LINK REVDAT 3 31-JAN-18 1T4M 1 REMARK REVDAT 2 24-FEB-09 1T4M 1 VERSN REVDAT 1 23-NOV-04 1T4M 0 JRNL AUTH P.ACHARYA,E.RAJAKUMARA,R.SANKARANARAYANAN,N.M.RAO JRNL TITL STRUCTURAL BASIS OF SELECTION AND THERMOSTABILITY OF JRNL TITL 2 LABORATORY EVOLVED BACILLUS SUBTILIS LIPASE JRNL REF J.MOL.BIOL. V. 341 1271 2004 JRNL REFN ISSN 0022-2836 JRNL PMID 15321721 JRNL DOI 10.1016/J.JMB.2004.06.059 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.RAJAKUMARA,P.ACHARYA,S.AHAMAD,V.M.SHANMUGAM,N.M.RAO, REMARK 1 AUTH 2 R.SANKARANARAYANAN REMARK 1 TITL CRYSTALLIZATION AND PRELIMINARY X-RAY CRYSTALLOGRAPHIC REMARK 1 TITL 2 INVESTIGATIONS ON SEVERAL THERMOSTABLE FORMS OF A BACILLUS REMARK 1 TITL 3 SUBTILIS LIPASE REMARK 1 REF ACTA CRYSTALLOGR.,SECT.D V. 60 160 2004 REMARK 1 REFN ISSN 0907-4449 REMARK 2 REMARK 2 RESOLUTION. 2.00 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 : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 24.19 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1544171.680 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 94.2 REMARK 3 NUMBER OF REFLECTIONS : 14102 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) : 0.206 REMARK 3 FREE R VALUE : 0.257 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 712 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.010 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 10 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.07 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 61.50 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 873 REMARK 3 BIN R VALUE (WORKING SET) : 0.3200 REMARK 3 BIN FREE R VALUE : 0.3520 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.50 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 51 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.049 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1358 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 183 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 27.90 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 32.20 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 3.80000 REMARK 3 B22 (A**2) : 3.80000 REMARK 3 B33 (A**2) : -7.60000 REMARK 3 B12 (A**2) : 3.77000 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) : 0.27 REMARK 3 ESD FROM SIGMAA (A) : 0.24 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) : 0.33 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.28 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.700 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 : 0.34 REMARK 3 BSOL : 77.42 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 : CNS_ION.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE ION PRESENT IN THE COORDINATES WAS REMARK 3 NAMED POTASSIUM BASED ON THE B-FACTOR DURING REFINEMENT REMARK 4 REMARK 4 1T4M COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-APR-04. REMARK 100 THE DEPOSITION ID IS D_1000022305. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 03-APR-03 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 9.5 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 : OSMIC REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 14102 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 25.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.0 REMARK 200 DATA REDUNDANCY : 2.100 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04400 REMARK 200 FOR THE DATA SET : 19.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 63.2 REMARK 200 DATA REDUNDANCY IN SHELL : 1.90 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.24100 REMARK 200 FOR SHELL : 2.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP CCP4 REMARK 200 STARTING MODEL: PDB ENTRY 1I6W REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 58.90 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.00 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 3350, ETHANOLAMINE, N-OCTYL-BETA-D REMARK 280 -GLUCOSIDE, SODIUM SULFATE., PH 9.5, VAPOR DIFFUSION, HANGING REMARK 280 DROP, TEMPERATURE 100K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 X+2/3,Y+1/3,Z+1/3 REMARK 290 5555 -Y+2/3,X-Y+1/3,Z+1/3 REMARK 290 6555 -X+Y+2/3,-X+1/3,Z+1/3 REMARK 290 7555 X+1/3,Y+2/3,Z+2/3 REMARK 290 8555 -Y+1/3,X-Y+2/3,Z+2/3 REMARK 290 9555 -X+Y+1/3,-X+2/3,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 0.00000 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 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 38.00750 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 21.94364 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 34.36433 REMARK 290 SMTRY1 5 -0.500000 -0.866025 0.000000 38.00750 REMARK 290 SMTRY2 5 0.866025 -0.500000 0.000000 21.94364 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 34.36433 REMARK 290 SMTRY1 6 -0.500000 0.866025 0.000000 38.00750 REMARK 290 SMTRY2 6 -0.866025 -0.500000 0.000000 21.94364 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 34.36433 REMARK 290 SMTRY1 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 43.88728 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 68.72867 REMARK 290 SMTRY1 8 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 8 0.866025 -0.500000 0.000000 43.88728 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 68.72867 REMARK 290 SMTRY1 9 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 -0.500000 0.000000 43.88728 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 68.72867 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 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 1 REMARK 465 GLU A 2 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 SER A 77 -124.02 52.80 REMARK 500 LEU A 90 -141.37 -114.17 REMARK 500 ARG A 107 1.38 -67.27 REMARK 500 ASN A 179 92.09 -166.11 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 K A 184 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 MET A 134 N REMARK 620 2 HIS A 156 N 102.3 REMARK 620 3 HOH A 190 O 158.5 63.6 REMARK 620 4 HOH A 287 O 123.5 100.6 76.7 REMARK 620 N 1 2 3 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 184 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1T2N RELATED DB: PDB REMARK 900 STRUCTURE OF A THERMOSTABLE TRIPLE MUTANT OF BACILLUS SUBTILIS REMARK 900 LIPASE OBTAINED THROUGH DIRECTED EVOLUTION. DBREF 1T4M A 1 181 UNP P37957 LIP_BACSU 33 213 SEQADV 1T4M ALA A 1 UNP P37957 ASP 33 ENGINEERED MUTATION SEQADV 1T4M TYR A 166 UNP P37957 ASN 198 ENGINEERED MUTATION SEQRES 1 A 181 ALA GLU HIS ASN PRO VAL VAL MET VAL HIS GLY ILE GLY SEQRES 2 A 181 GLY ALA SER PHE ASN PHE ALA GLY ILE LYS SER TYR LEU SEQRES 3 A 181 VAL SER GLN GLY TRP SER ARG ASP LYS LEU TYR ALA VAL SEQRES 4 A 181 ASP PHE TRP ASP LYS THR GLY THR ASN TYR ASN ASN GLY SEQRES 5 A 181 PRO VAL LEU SER ARG PHE VAL GLN LYS VAL LEU ASP GLU SEQRES 6 A 181 THR GLY ALA LYS LYS VAL ASP ILE VAL ALA HIS SER MET SEQRES 7 A 181 GLY GLY ALA ASN THR LEU TYR TYR ILE LYS ASN LEU ASP SEQRES 8 A 181 GLY GLY ASN LYS VAL ALA ASN VAL VAL THR LEU GLY GLY SEQRES 9 A 181 ALA ASN ARG LEU THR THR GLY LYS ALA LEU PRO GLY THR SEQRES 10 A 181 ASP PRO ASN GLN LYS ILE LEU TYR THR SER ILE TYR SER SEQRES 11 A 181 SER ASP ASP MET ILE VAL MET ASN TYR LEU SER ARG LEU SEQRES 12 A 181 ASP GLY ALA ARG ASN VAL GLN ILE HIS GLY VAL GLY HIS SEQRES 13 A 181 ILE GLY LEU LEU TYR SER SER GLN VAL TYR SER LEU ILE SEQRES 14 A 181 LYS GLU GLY LEU ASN GLY GLY GLY GLN ASN THR ASN HET K A 184 1 HETNAM K POTASSIUM ION FORMUL 2 K K 1+ FORMUL 3 HOH *183(H2 O) HELIX 1 1 ALA A 15 ASN A 18 5 4 HELIX 2 2 PHE A 19 GLN A 29 1 11 HELIX 3 3 SER A 32 ASP A 34 5 3 HELIX 4 4 THR A 47 GLY A 67 1 21 HELIX 5 5 MET A 78 LEU A 90 1 13 HELIX 6 6 ASP A 91 ASN A 94 5 4 HELIX 7 7 ALA A 105 THR A 109 5 5 HELIX 8 8 MET A 137 ARG A 142 1 6 HELIX 9 9 ILE A 157 TYR A 161 5 5 HELIX 10 10 SER A 162 ASN A 174 1 13 SHEET 1 A 6 LEU A 36 ALA A 38 0 SHEET 2 A 6 VAL A 6 VAL A 9 1 N VAL A 6 O TYR A 37 SHEET 3 A 6 VAL A 71 HIS A 76 1 O ASP A 72 N VAL A 7 SHEET 4 A 6 VAL A 96 LEU A 102 1 O LEU A 102 N ALA A 75 SHEET 5 A 6 LEU A 124 SER A 130 1 O ILE A 128 N THR A 101 SHEET 6 A 6 ARG A 147 ILE A 151 1 O VAL A 149 N SER A 127 LINK N MET A 134 K K A 184 1555 1555 3.20 LINK N HIS A 156 K K A 184 1555 1555 3.32 LINK K K A 184 O HOH A 190 1555 3665 3.27 LINK K K A 184 O HOH A 287 1555 3665 3.50 SITE 1 AC1 2 MET A 134 HIS A 156 CRYST1 76.015 76.015 103.093 90.00 90.00 120.00 H 3 9 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 0.013155 0.007595 0.000000 0.00000 SCALE2 0.000000 0.015190 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009700 0.00000