HEADER SERINE PROTEASE 10-NOV-95 1RTF TITLE COMPLEX OF BENZAMIDINE WITH THE CATALYTIC DOMAIN OF HUMAN TWO CHAIN TITLE 2 TISSUE PLASMINOGEN ACTIVATOR [(TC)-T-PA] COMPND MOL_ID: 1; COMPND 2 MOLECULE: TWO CHAIN TISSUE PLASMINOGEN ACTIVATOR; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: CATALYTIC DOMAIN; COMPND 5 SYNONYM: (TC)-T-PA; COMPND 6 EC: 3.4.21.68; COMPND 7 ENGINEERED: YES; COMPND 8 MOL_ID: 2; COMPND 9 MOLECULE: TWO CHAIN TISSUE PLASMINOGEN ACTIVATOR; COMPND 10 CHAIN: B; COMPND 11 FRAGMENT: CATALYTIC DOMAIN; COMPND 12 SYNONYM: (TC)-T-PA; COMPND 13 EC: 3.4.21.68; COMPND 14 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 MOL_ID: 2; SOURCE 8 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 9 ORGANISM_COMMON: HUMAN; SOURCE 10 ORGANISM_TAXID: 9606; SOURCE 11 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 12 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS SERINE PROTEASE, FIBRINOLYTIC ENZYMES EXPDTA X-RAY DIFFRACTION AUTHOR W.BODE,D.LAMBA REVDAT 3 30-OCT-24 1RTF 1 REMARK REVDAT 2 24-FEB-09 1RTF 1 VERSN REVDAT 1 11-JAN-97 1RTF 0 JRNL AUTH D.LAMBA,M.BAUER,R.HUBER,S.FISCHER,R.RUDOLPH,U.KOHNERT,W.BODE JRNL TITL THE 2.3 A CRYSTAL STRUCTURE OF THE CATALYTIC DOMAIN OF JRNL TITL 2 RECOMBINANT TWO-CHAIN HUMAN TISSUE-TYPE PLASMINOGEN JRNL TITL 3 ACTIVATOR JRNL REF J.MOL.BIOL. V. 258 117 1996 JRNL REFN ISSN 0022-2836 JRNL PMID 8613982 JRNL DOI 10.1006/JMBI.1996.0238 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 11836 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING SET) : 0.184 REMARK 3 FREE R VALUE : 0.265 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1965 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 14 REMARK 3 SOLVENT ATOMS : 56 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.40 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.23 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL 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 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1RTF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000176216. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL 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 : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 12894 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.06600 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) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL 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: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.28 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 45.44333 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 90.88667 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 90.88667 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 45.44333 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: 1500 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 11410 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -5.0 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 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 SER A -3 REMARK 465 TYR A -2 REMARK 465 GLN A -1 REMARK 465 SER A 0 REMARK 465 GLN A 8 REMARK 465 ARG A 9 REMARK 465 GLN A 10 REMARK 465 ARG A 11 REMARK 465 ARG A 12 REMARK 465 ARG B 37B REMARK 465 SER B 37C REMARK 465 PRO B 37D REMARK 465 GLY B 186C REMARK 465 GLY B 186D REMARK 465 PRO B 186E REMARK 465 GLN B 186F REMARK 465 ALA B 186G 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 SER A 7 CA C O CB OG REMARK 470 ARG B 37A CA C O CB CG CD NE REMARK 470 ARG B 37A CZ NH1 NH2 REMARK 470 SER B 186B CA C O CB OG REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 ARG B 60B CG CD NE CZ NH1 NH2 REMARK 480 GLU B 78 CG CD OE1 OE2 REMARK 480 LYS B 82 CE NZ REMARK 480 LYS B 92 CG CD CE NZ REMARK 480 ASP B 96 CG OD1 OD2 REMARK 480 GLN B 113 CG CD OE1 NE2 REMARK 480 GLN B 129 CG CD OE1 NE2 REMARK 480 GLU B 145 CG CD OE1 OE2 REMARK 480 GLN B 169B CG CD OE1 NE2 REMARK 480 ASN B 186H CG OD1 ND2 REMARK 480 ASP B 204 CG OD1 OD2 REMARK 480 LYS B 222 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 HH12 ARG B 73 H1 HOH B 286 1.34 REMARK 500 REMARK 500 REMARK: NULL 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 LEU B 181 CA - CB - CG ANGL. DEV. = 13.9 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 GLN A 5 98.84 -67.76 REMARK 500 LEU B 41 -65.97 -98.78 REMARK 500 CYS B 111 -82.66 -114.02 REMARK 500 ASP B 127 38.27 -99.29 REMARK 500 CYS B 168 66.47 -112.71 REMARK 500 ARG B 186A -153.62 -142.92 REMARK 500 ASP B 223 -6.41 68.19 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 PO4 B 1 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BEN B 245 DBREF 1RTF B 16 244 UNP P00750 TPA_HUMAN 311 562 DBREF 1RTF A -3 12 PDB 1RTF 1RTF -3 12 SEQRES 1 A 17 SER TYR GLN SER THR CYS GLY LEU ARG GLN TYR SER GLN SEQRES 2 A 17 ARG GLN ARG ARG SEQRES 1 B 252 ILE LYS GLY GLY LEU PHE ALA ASP ILE ALA SER HIS PRO SEQRES 2 B 252 TRP GLN ALA ALA ILE PHE ALA LYS HIS ARG ARG SER PRO SEQRES 3 B 252 GLY GLU ARG PHE LEU CYS GLY GLY ILE LEU ILE SER SER SEQRES 4 B 252 CYS TRP ILE LEU SER ALA ALA HIS CYS PHE GLN GLU ARG SEQRES 5 B 252 PHE PRO PRO HIS HIS LEU THR VAL ILE LEU GLY ARG THR SEQRES 6 B 252 TYR ARG VAL VAL PRO GLY GLU GLU GLU GLN LYS PHE GLU SEQRES 7 B 252 VAL GLU LYS TYR ILE VAL HIS LYS GLU PHE ASP ASP ASP SEQRES 8 B 252 THR TYR ASP ASN ASP ILE ALA LEU LEU GLN LEU LYS SER SEQRES 9 B 252 ASP SER SER ARG CYS ALA GLN GLU SER SER VAL VAL ARG SEQRES 10 B 252 THR VAL CYS LEU PRO PRO ALA ASP LEU GLN LEU PRO ASP SEQRES 11 B 252 TRP THR GLU CYS GLU LEU SER GLY TYR GLY LYS HIS GLU SEQRES 12 B 252 ALA LEU SER PRO PHE TYR SER GLU ARG LEU LYS GLU ALA SEQRES 13 B 252 HIS VAL ARG LEU TYR PRO SER SER ARG CYS THR SER GLN SEQRES 14 B 252 HIS LEU LEU ASN ARG THR VAL THR ASP ASN MET LEU CYS SEQRES 15 B 252 ALA GLY ASP THR ARG SER GLY GLY PRO GLN ALA ASN LEU SEQRES 16 B 252 HIS ASP ALA CYS GLN GLY ASP SER GLY GLY PRO LEU VAL SEQRES 17 B 252 CYS LEU ASN ASP GLY ARG MET THR LEU VAL GLY ILE ILE SEQRES 18 B 252 SER TRP GLY LEU GLY CYS GLY GLN LYS ASP VAL PRO GLY SEQRES 19 B 252 VAL TYR THR LYS VAL THR ASN TYR LEU ASP TRP ILE ARG SEQRES 20 B 252 ASP ASN MET ARG PRO HET PO4 B 1 5 HET BEN B 245 13 HETNAM PO4 PHOSPHATE ION HETNAM BEN BENZAMIDINE FORMUL 3 PO4 O4 P 3- FORMUL 4 BEN C7 H8 N2 FORMUL 5 HOH *56(H2 O) HELIX 1 1 ILE B 24 SER B 26 5 3 HELIX 2 2 ALA B 56 PHE B 59 5 4 HELIX 3 3 PRO B 61 HIS B 63 5 3 HELIX 4 4 SER B 165 ARG B 167 5 3 HELIX 5 5 VAL B 231 ASN B 241 5 11 SHEET 1 A 7 GLN B 81 GLU B 84 0 SHEET 2 A 7 LEU B 64 LEU B 68 -1 N LEU B 68 O GLN B 81 SHEET 3 A 7 GLN B 30 ALA B 35 -1 N PHE B 34 O THR B 65 SHEET 4 A 7 ARG B 39 SER B 48 -1 N GLY B 44 O ALA B 31 SHEET 5 A 7 TRP B 51 SER B 54 -1 N LEU B 53 O ILE B 45 SHEET 6 A 7 ALA B 104 LEU B 108 -1 N LEU B 106 O ILE B 52 SHEET 7 A 7 VAL B 85 VAL B 90 -1 N ILE B 89 O LEU B 105 SHEET 1 B 2 GLU B 135 GLY B 140 0 SHEET 2 B 2 LYS B 156 ARG B 161 -1 N VAL B 160 O CYS B 136 SHEET 1 C 4 MET B 180 ALA B 183 0 SHEET 2 C 4 GLY B 226 LYS B 230 -1 N TYR B 228 O LEU B 181 SHEET 3 C 4 ARG B 206 TRP B 215 -1 N TRP B 215 O VAL B 227 SHEET 4 C 4 PRO B 198 ASN B 203 -1 N ASN B 203 O ARG B 206 SSBOND 1 CYS A 1 CYS B 122 1555 1555 2.03 SSBOND 2 CYS B 42 CYS B 58 1555 1555 2.02 SSBOND 3 CYS B 50 CYS B 111 1555 1555 2.03 SSBOND 4 CYS B 136 CYS B 201 1555 1555 2.02 SSBOND 5 CYS B 168 CYS B 182 1555 1555 2.03 SSBOND 6 CYS B 191 CYS B 220 1555 1555 2.03 SITE 1 AC1 8 CYS B 42 HIS B 57 GLN B 192 GLY B 193 SITE 2 AC1 8 SER B 195 ARG B 243 BEN B 245 HOH B 297 SITE 1 AC2 9 PO4 B 1 ASP B 189 ALA B 190 GLN B 192 SITE 2 AC2 9 SER B 195 TRP B 215 GLY B 219 GLY B 226 SITE 3 AC2 9 HOH B 261 CRYST1 59.200 59.200 136.330 90.00 90.00 120.00 P 31 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 0.016892 0.009753 0.000000 0.00000 SCALE2 0.000000 0.019505 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007335 0.00000