HEADER HYDROLASE 02-NOV-99 1DBI TITLE CRYSTAL STRUCTURE OF A THERMOSTABLE SERINE PROTEASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: AK.1 SERINE PROTEASE; COMPND 3 CHAIN: A SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS SP. AK1; SOURCE 3 ORGANISM_TAXID: 268807; SOURCE 4 STRAIN: AK.1 KEYWDS HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR C.A.SMITH,H.S.TOOGOOD,H.M.BAKER,R.M.DANIEL,E.N.BAKER REVDAT 5 30-OCT-24 1DBI 1 REMARK LINK REVDAT 4 04-OCT-17 1DBI 1 REMARK REVDAT 3 24-FEB-09 1DBI 1 VERSN REVDAT 2 22-DEC-99 1DBI 1 JRNL REVDAT 1 18-NOV-99 1DBI 0 JRNL AUTH C.A.SMITH,H.S.TOOGOOD,H.M.BAKER,R.M.DANIEL,E.N.BAKER JRNL TITL CALCIUM-MEDIATED THERMOSTABILITY IN THE SUBTILISIN JRNL TITL 2 SUPERFAMILY: THE CRYSTAL STRUCTURE OF BACILLUS AK.1 PROTEASE JRNL TITL 3 AT 1.8 A RESOLUTION. JRNL REF J.MOL.BIOL. V. 294 1027 1999 JRNL REFN ISSN 0022-2836 JRNL PMID 10588904 JRNL DOI 10.1006/JMBI.1999.3291 REMARK 2 REMARK 2 RESOLUTION. 1.80 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) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 19473 REMARK 3 REMARK 3 USING DATA ABOVE SIGMA CUTOFF. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.182 REMARK 3 FREE R VALUE : 0.247 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1028 REMARK 3 REMARK 3 USING ALL DATA, NO SIGMA CUTOFF. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL 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) : 19473 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2021 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 4 REMARK 3 SOLVENT ATOMS : 246 REMARK 3 REMARK 3 WILSON B VALUE (FROM FCALC, A**2) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. RMS WEIGHT COUNT REMARK 3 BOND LENGTHS (A) : 0.012 ; NULL ; NULL REMARK 3 BOND ANGLES (DEGREES) : 1.490 ; 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 : NULL REMARK 3 BSOL : NULL REMARK 3 REMARK 3 RESTRAINT LIBRARIES. REMARK 3 STEREOCHEMISTRY : ENGH & HUBER REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1DBI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 03-NOV-99. REMARK 100 THE DEPOSITION ID IS D_1000009949. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 19-MAR-97 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 4.9 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO, ROTAVATA REMARK 200 DATA SCALING SOFTWARE : CCP4 (AGROVATA, ROTAVATA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20847 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 87.4 REMARK 200 DATA REDUNDANCY : 4.700 REMARK 200 R MERGE (I) : 0.07600 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 8.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 20.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 47.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.37200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL 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 (%): 38.65 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.00 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, ACETATE, CALCIUM CHLORIDE, REMARK 280 PH 4.9, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 277K 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 25.84000 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 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 GLY A 166 REMARK 465 SER A 167 REMARK 465 SER A 168 REMARK 465 THR A 169 REMARK 465 THR A 170 REMARK 465 PHE A 171 REMARK 465 GLU A 172 REMARK 465 PRO A 173 REMARK 465 ALA A 174 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 GLN A 9 CG CD OE1 NE2 REMARK 470 ASP A 106 CG OD1 OD2 REMARK 470 ARG A 107 CG CD NE CZ NH1 NH2 REMARK 470 ASN A 108 CG OD1 ND2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP A 58 CB - CG - OD1 ANGL. DEV. = 5.5 DEGREES REMARK 500 ASP A 186 CB - CG - OD1 ANGL. DEV. = 6.1 DEGREES 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 ASP A 39 -146.96 -157.12 REMARK 500 PRO A 66 44.76 -89.45 REMARK 500 ASN A 71 -28.52 127.63 REMARK 500 ALA A 81 54.14 -163.14 REMARK 500 ASP A 106 -159.50 -81.22 REMARK 500 SER A 134 79.50 -101.42 REMARK 500 CYS A 137 -5.22 -144.39 REMARK 500 THR A 265 -54.11 -132.18 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 CA A 701 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 5 OD2 REMARK 620 2 ASP A 48 OD2 147.1 REMARK 620 3 ASP A 48 OD1 156.5 53.4 REMARK 620 4 GLU A 83 O 93.7 103.2 88.9 REMARK 620 5 ASN A 86 OD1 77.1 130.5 79.6 88.8 REMARK 620 6 THR A 88 O 85.2 81.6 89.0 171.9 83.1 REMARK 620 7 ILE A 90 O 77.4 77.1 126.1 82.6 152.4 104.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 704 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 PRO A 47 O REMARK 620 2 ASP A 50 OD1 95.4 REMARK 620 3 GLU A 83 OE2 85.8 75.8 REMARK 620 4 GLU A 83 OE1 91.2 126.7 52.0 REMARK 620 5 HOH A 307 O 173.4 83.4 87.7 84.4 REMARK 620 6 HOH A 308 O 95.6 78.9 154.6 152.8 90.6 REMARK 620 7 HOH A 309 O 81.2 156.8 126.4 76.4 102.4 78.7 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 703 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 58 OD2 REMARK 620 2 ASP A 63 OD1 92.2 REMARK 620 3 ASP A 63 OD2 92.3 48.9 REMARK 620 4 ASP A 65 O 94.2 71.9 120.7 REMARK 620 5 HOH A 304 O 88.9 152.7 158.3 80.8 REMARK 620 6 HOH A 305 O 97.5 128.6 80.3 155.6 78.1 REMARK 620 7 HOH A 306 O 169.3 97.5 90.6 93.2 84.6 72.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 NA A 702 NA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 TYR A 176 O REMARK 620 2 VAL A 179 O 76.7 REMARK 620 3 ASP A 202 OD2 139.3 76.1 REMARK 620 4 HOH A 301 O 83.4 99.3 71.9 REMARK 620 5 HOH A 302 O 106.2 69.9 92.1 162.8 REMARK 620 6 HOH A 303 O 84.2 151.5 130.6 99.3 96.0 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 CA A 701 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA A 702 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 703 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 704 DBREF 1DBI A 1 280 UNP Q45670 THES_BACSJ 122 401 SEQRES 1 A 280 TRP THR PRO ASN ASP THR TYR TYR GLN GLY TYR GLN TYR SEQRES 2 A 280 GLY PRO GLN ASN THR TYR THR ASP TYR ALA TRP ASP VAL SEQRES 3 A 280 THR LYS GLY SER SER GLY GLN GLU ILE ALA VAL ILE ASP SEQRES 4 A 280 THR GLY VAL ASP TYR THR HIS PRO ASP LEU ASP GLY LYS SEQRES 5 A 280 VAL ILE LYS GLY TYR ASP PHE VAL ASP ASN ASP TYR ASP SEQRES 6 A 280 PRO MET ASP LEU ASN ASN HIS GLY THR HIS VAL ALA GLY SEQRES 7 A 280 ILE ALA ALA ALA GLU THR ASN ASN ALA THR GLY ILE ALA SEQRES 8 A 280 GLY MET ALA PRO ASN THR ARG ILE LEU ALA VAL ARG ALA SEQRES 9 A 280 LEU ASP ARG ASN GLY SER GLY THR LEU SER ASP ILE ALA SEQRES 10 A 280 ASP ALA ILE ILE TYR ALA ALA ASP SER GLY ALA GLU VAL SEQRES 11 A 280 ILE ASN LEU SER LEU GLY CYS ASP CYS HIS THR THR THR SEQRES 12 A 280 LEU GLU ASN ALA VAL ASN TYR ALA TRP ASN LYS GLY SER SEQRES 13 A 280 VAL VAL VAL ALA ALA ALA GLY ASN ASN GLY SER SER THR SEQRES 14 A 280 THR PHE GLU PRO ALA SER TYR GLU ASN VAL ILE ALA VAL SEQRES 15 A 280 GLY ALA VAL ASP GLN TYR ASP ARG LEU ALA SER PHE SER SEQRES 16 A 280 ASN TYR GLY THR TRP VAL ASP VAL VAL ALA PRO GLY VAL SEQRES 17 A 280 ASP ILE VAL SER THR ILE THR GLY ASN ARG TYR ALA TYR SEQRES 18 A 280 MET SER GLY THR SER MET ALA SER PRO HIS VAL ALA GLY SEQRES 19 A 280 LEU ALA ALA LEU LEU ALA SER GLN GLY ARG ASN ASN ILE SEQRES 20 A 280 GLU ILE ARG GLN ALA ILE GLU GLN THR ALA ASP LYS ILE SEQRES 21 A 280 SER GLY THR GLY THR TYR PHE LYS TYR GLY ARG ILE ASN SEQRES 22 A 280 SER TYR ASN ALA VAL THR TYR HET CA A 701 1 HET NA A 702 1 HET CA A 703 1 HET CA A 704 1 HETNAM CA CALCIUM ION HETNAM NA SODIUM ION FORMUL 2 CA 3(CA 2+) FORMUL 3 NA NA 1+ FORMUL 6 HOH *246(H2 O) HELIX 1 1 TYR A 7 GLN A 12 1 6 HELIX 2 2 PRO A 15 THR A 18 5 4 HELIX 3 3 TYR A 19 TRP A 24 1 6 HELIX 4 4 ASN A 71 ALA A 82 1 12 HELIX 5 5 THR A 112 SER A 126 1 15 HELIX 6 6 THR A 141 LYS A 154 1 14 HELIX 7 7 GLY A 224 GLN A 242 1 19 HELIX 8 8 ASN A 245 THR A 256 1 12 HELIX 9 9 ASN A 273 THR A 279 1 7 SHEET 1 A 8 VAL A 53 ASP A 58 0 SHEET 2 A 8 ARG A 98 ARG A 103 1 O ILE A 99 N ILE A 54 SHEET 3 A 8 GLU A 34 ASP A 39 1 O ILE A 35 N LEU A 100 SHEET 4 A 8 VAL A 130 LEU A 133 1 O VAL A 130 N ALA A 36 SHEET 5 A 8 VAL A 157 ALA A 161 1 O VAL A 157 N ILE A 131 SHEET 6 A 8 ILE A 180 VAL A 185 1 N ILE A 180 O VAL A 158 SHEET 7 A 8 VAL A 203 PRO A 206 1 O VAL A 203 N GLY A 183 SHEET 8 A 8 GLY A 270 ARG A 271 1 O GLY A 270 N VAL A 204 SHEET 1 B 2 ILE A 210 ILE A 214 0 SHEET 2 B 2 ARG A 218 MET A 222 -1 O ARG A 218 N ILE A 214 SSBOND 1 CYS A 137 CYS A 139 1555 1555 2.04 LINK OD2 ASP A 5 CA CA A 701 1555 1555 2.25 LINK O PRO A 47 CA CA A 704 1555 1555 2.16 LINK OD2 ASP A 48 CA CA A 701 1555 1555 2.48 LINK OD1 ASP A 48 CA CA A 701 1555 1555 2.44 LINK OD1 ASP A 50 CA CA A 704 1555 1555 2.23 LINK OD2 ASP A 58 CA CA A 703 1555 1555 2.17 LINK OD1 ASP A 63 CA CA A 703 1555 1555 2.36 LINK OD2 ASP A 63 CA CA A 703 1555 1555 2.78 LINK O ASP A 65 CA CA A 703 1555 1555 2.34 LINK O GLU A 83 CA CA A 701 1555 1555 2.13 LINK OE2 GLU A 83 CA CA A 704 1555 1555 2.58 LINK OE1 GLU A 83 CA CA A 704 1555 1555 2.40 LINK OD1 ASN A 86 CA CA A 701 1555 1555 2.31 LINK O THR A 88 CA CA A 701 1555 1555 2.08 LINK O ILE A 90 CA CA A 701 1555 1555 2.54 LINK O TYR A 176 NA NA A 702 1555 1555 2.98 LINK O VAL A 179 NA NA A 702 1555 1555 2.61 LINK OD2 ASP A 202 NA NA A 702 1555 1555 2.88 LINK O HOH A 301 NA NA A 702 1555 1555 2.50 LINK O HOH A 302 NA NA A 702 1555 1555 2.72 LINK O HOH A 303 NA NA A 702 1555 1555 2.18 LINK O HOH A 304 CA CA A 703 1555 1555 2.33 LINK O HOH A 305 CA CA A 703 1555 1555 2.42 LINK O HOH A 306 CA CA A 703 1555 1555 2.36 LINK O HOH A 307 CA CA A 704 1555 1555 2.38 LINK O HOH A 308 CA CA A 704 1555 1555 2.30 LINK O HOH A 309 CA CA A 704 1555 1555 2.28 SITE 1 AC1 6 ASP A 5 ASP A 48 GLU A 83 ASN A 86 SITE 2 AC1 6 THR A 88 ILE A 90 SITE 1 AC2 6 TYR A 176 VAL A 179 ASP A 202 HOH A 301 SITE 2 AC2 6 HOH A 302 HOH A 303 SITE 1 AC3 6 ASP A 58 ASP A 63 ASP A 65 HOH A 304 SITE 2 AC3 6 HOH A 305 HOH A 306 SITE 1 AC4 6 PRO A 47 ASP A 50 GLU A 83 HOH A 307 SITE 2 AC4 6 HOH A 308 HOH A 309 CRYST1 44.050 51.680 52.780 90.00 96.10 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 0.022701 0.000000 0.002426 0.00000 SCALE2 0.000000 0.019350 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019054 0.00000