PDB Short entry for 1JRS HEADER HYDROLASE/HYDROLASE INHIBITOR 07-FEB-96 1JRS TITLE HEMIACETAL COMPLEX BETWEEN LEUPEPTIN AND TRYPSIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.21.4; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: LEUPEPTIN; COMPND 7 CHAIN: B; COMPND 8 EC: 3.4.21.4; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 MOL_ID: 2; SOURCE 6 SYNTHETIC: YES KEYWDS HYDROLASE, SERINE PROTEASE, DIGESTION, PANCREAS, ZYMOGEN, HYDROLASE KEYWDS 2 (SERINE PROTEASE), HYDROLASE-HYDROLASE INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR I.V.KURINOV,R.W.HARRISON REVDAT 3 13-JUL-11 1JRS 1 VERSN REVDAT 2 24-FEB-09 1JRS 1 VERSN REVDAT 1 14-OCT-96 1JRS 0 JRNL AUTH I.V.KURINOV,R.W.HARRISON JRNL TITL TWO CRYSTAL STRUCTURES OF THE LEUPEPTIN-TRYPSIN COMPLEX. JRNL REF PROTEIN SCI. V. 5 752 1996 JRNL REFN ISSN 0961-8368 JRNL PMID 8845765 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH I.V.KURINOV,R.W.HARRISON REMARK 1 TITL PREDICTION OF NEW SERINE PROTEINASE INHIBITORS REMARK 1 REF NAT.STRUCT.BIOL. V. 1 735 1994 REMARK 1 REFN ISSN 1072-8368 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 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 : 23223 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) : 0.175 REMARK 3 FREE R VALUE : 0.207 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 : 1659 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 170 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 22.20 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) : NULL 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) : 0.013 REMARK 3 BOND ANGLES (DEGREES) : 2.60 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 1JRS COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 19-MAR-94 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 : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : PROCESS REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 78707 REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 88.8 REMARK 200 DATA REDUNDANCY : 3.240 REMARK 200 R MERGE (I) : 0.04400 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> 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 <I/SIGMA(I)> 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 3.1 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.93 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: ORTHORHOMBIC SPACE GROUP; REMARK 280 CRYSTALLIZATION CONDITIONS: 24-26% PEG8000, 0.02M INHIBITOR, 0.2M REMARK 280 (NH4)2 SO4, 50MM TRIS-HCL, ROOM TEMPERATURE, HANGING DROP., VAPOR REMARK 280 DIFFUSION - HANGING DROP REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-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 31.84300 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 31.50650 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 34.68650 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 31.50650 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 31.84300 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 34.68650 REMARK 290 SMTRY3 4 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 1040 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8860 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -16.0 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 400 REMARK 400 COMPOUND REMARK 400 THE LEUPEPTIN IS COVALENTLY CONNECTED REMARK 400 TO ACTIVE_SITE SER 195 OF THE ENZYME TO REMARK 400 FORM A HEMIACETAL. 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 HE22 GLN A 64 HE ARG A 65 1.33 REMARK 500 HE21 GLN A 64 HH21 ARG A 65 1.33 REMARK 500 HG1 THR A 21 HZ1 LYS A 156 1.37 REMARK 500 OG SER A 195 C AR7 B 3 1.42 REMARK 500 HD22 ASN A 72 H ASN A 74 1.42 REMARK 500 HG SER A 37 HZ3 LYS A 60 1.52 REMARK 500 HZ2 LYS A 156 H1 HOH A 1134 1.57 REMARK 500 CA CA A 901 O HOH A 1072 1.67 REMARK 500 OG SER A 195 O AR7 B 3 2.18 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 HIS A 57 NE2 HIS A 57 CD2 -0.074 REMARK 500 HIS A 91 NE2 HIS A 91 CD2 -0.071 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 TRP A 51 CD1 - CG - CD2 ANGL. DEV. = 5.4 DEGREES REMARK 500 TRP A 51 CE2 - CD2 - CG ANGL. DEV. = -5.5 DEGREES REMARK 500 ARG A 65 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 ARG A 65 NE - CZ - NH2 ANGL. DEV. = -3.9 DEGREES REMARK 500 TRP A 141 CD1 - CG - CD2 ANGL. DEV. = 6.5 DEGREES REMARK 500 TRP A 141 CE2 - CD2 - CG ANGL. DEV. = -5.6 DEGREES REMARK 500 TRP A 215 CD1 - CG - CD2 ANGL. DEV. = 5.1 DEGREES REMARK 500 TRP A 215 CE2 - CD2 - CG ANGL. DEV. = -5.2 DEGREES REMARK 500 TRP A 237 CD1 - CG - CD2 ANGL. DEV. = 6.1 DEGREES REMARK 500 TRP A 237 CE2 - CD2 - CG ANGL. DEV. = -5.7 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 71 -76.06 -122.42 REMARK 500 ASN A 79 -3.85 81.82 REMARK 500 ASN A 115 -148.09 -154.55 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 901 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A1033 O REMARK 620 2 VAL A 75 O 86.3 REMARK 620 3 ASN A 72 O 107.8 82.8 REMARK 620 4 GLU A 70 OE1 79.8 162.9 92.0 REMARK 620 5 GLU A 80 OE2 95.3 91.3 155.7 99.7 REMARK 620 N 1 2 3 4 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 901 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN B OF LEUPEPTIN REMARK 999 REMARK 999 SEQUENCE REMARK 999 THERE IS A DISCREPANCY IN THE NORINE AND PDB NUMBERING, AS NORINE REMARK 999 COUNTS ACE AND LEU TOGETHER AS ONE RESIDUE. SO THE DBREF WILL REMARK 999 REPORT 4 PDB RESIDUES MATCHING NORINE 3 RESIDUE DBREF 1JRS A 16 245 UNP P00760 TRY1_BOVIN 21 243 DBREF 1JRS B 1A 3 NOR NOR00487 NOR00487 1 3 SEQRES 1 A 223 ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO SEQRES 2 A 223 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 A 223 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 A 223 HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU SEQRES 5 A 223 ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE SEQRES 6 A 223 SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASN SER SEQRES 7 A 223 ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS SEQRES 8 A 223 SER ALA ALA SER LEU ASN SER ARG VAL ALA SER ILE SER SEQRES 9 A 223 LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU SEQRES 10 A 223 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER SEQRES 11 A 223 TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU SEQRES 12 A 223 SER ASP SER SER CYS LYS SER ALA TYR PRO GLY GLN ILE SEQRES 13 A 223 THR SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY SEQRES 14 A 223 LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL SEQRES 15 A 223 CYS SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER SEQRES 16 A 223 GLY CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS SEQRES 17 A 223 VAL CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA SEQRES 18 A 223 SER ASN SEQRES 1 B 4 ACE LEU LEU AR7 HET ACE B 1A 3 HET AR7 B 3 19 HET CA A 901 1 HETNAM ACE ACETYL GROUP HETNAM AR7 AMINO{[(4S)-4-AMINO-5,5- HETNAM 2 AR7 DIHYDROXYPENTYL]AMINO}METHANIMINIUM HETNAM CA CALCIUM ION FORMUL 2 ACE C2 H4 O FORMUL 2 AR7 C6 H17 N4 O2 1+ FORMUL 3 CA CA 2+ FORMUL 4 HOH *170(H2 O) HELIX 1 1 ALA A 56 CYS A 58 5 3 HELIX 2 2 ASP A 165 ALA A 171 1 7 HELIX 3 3 VAL A 231 SER A 244 5 14 SHEET 1 A 7 GLN A 81 SER A 84 0 SHEET 2 A 7 GLN A 64 LEU A 66 -1 N LEU A 66 O GLN A 81 SHEET 3 A 7 GLN A 30 ASN A 34 -1 N ASN A 34 O GLN A 64 SHEET 4 A 7 HIS A 40 ASN A 48 -1 N GLY A 44 O VAL A 31 SHEET 5 A 7 TRP A 51 SER A 54 -1 N VAL A 53 O SER A 45 SHEET 6 A 7 MET A 104 LEU A 108 -1 N ILE A 106 O VAL A 52 SHEET 7 A 7 ALA A 85 VAL A 90 -1 N ILE A 89 O LEU A 105 SHEET 1 B 2 GLN A 135 GLY A 140 0 SHEET 2 B 2 LYS A 156 PRO A 161 -1 N ALA A 160 O CYS A 136 SHEET 1 C 4 MET A 180 ALA A 183 0 SHEET 2 C 4 GLY A 226 LYS A 230 -1 N TYR A 228 O PHE A 181 SHEET 3 C 4 LYS A 204 TRP A 215 -1 N TRP A 215 O VAL A 227 SHEET 4 C 4 PRO A 198 CYS A 201 -1 N CYS A 201 O LYS A 204 SSBOND 1 CYS A 22 CYS A 157 1555 1555 2.03 SSBOND 2 CYS A 42 CYS A 58 1555 1555 2.02 SSBOND 3 CYS A 128 CYS A 232 1555 1555 2.03 SSBOND 4 CYS A 136 CYS A 201 1555 1555 2.01 SSBOND 5 CYS A 168 CYS A 182 1555 1555 2.02 SSBOND 6 CYS A 191 CYS A 220 1555 1555 2.03 LINK C LEU B 2 N AR7 B 3 1555 1555 1.32 LINK CA CA A 901 O HOH A1033 1555 1555 1.96 LINK O VAL A 75 CA CA A 901 1555 1555 2.12 LINK O ASN A 72 CA CA A 901 1555 1555 2.22 LINK OE1 GLU A 70 CA CA A 901 1555 1555 2.30 LINK OE2 GLU A 80 CA CA A 901 1555 1555 2.37 SITE 1 AC1 6 GLU A 70 ASN A 72 VAL A 75 GLU A 80 SITE 2 AC1 6 HOH A1033 HOH A1072 SITE 1 AC2 16 HIS A 57 LEU A 99 ASP A 189 SER A 190 SITE 2 AC2 16 CYS A 191 GLN A 192 GLY A 193 SER A 195 SITE 3 AC2 16 SER A 214 TRP A 215 GLY A 216 GLY A 219 SITE 4 AC2 16 GLY A 226 HOH A1106 HOH B 107 HOH B 150 CRYST1 63.686 69.373 63.013 90.00 90.00 90.00 P 21 21 21 4 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 0.015702 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014415 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015870 0.00000