HEADER SERINE PROTEINASE 18-JUN-99 1QIX TITLE PORCINE PANCREATIC ELASTASE COMPLEXED WITH HUMAN BETA-CASOMORPHIN-7 COMPND MOL_ID: 1; COMPND 2 MOLECULE: BETA-CASOMORPHIN-7; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: ELASTASE; COMPND 7 CHAIN: B; COMPND 8 SYNONYM: PPE; COMPND 9 EC: 3.4.21.11; COMPND 10 OTHER_DETAILS: PORCINE PANCREATIC ELASTASE SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 4 ORGANISM_COMMON: HUMAN; SOURCE 5 ORGANISM_TAXID: 9606; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 8 ORGANISM_COMMON: PIG; SOURCE 9 ORGANISM_TAXID: 9823; SOURCE 10 ORGAN: PANCREAS KEYWDS SERINE PROTEINASE, HYDROLASE (SERINE PROTEINASE) EXPDTA X-RAY DIFFRACTION AUTHOR R.C.WILMOUTH,I.J.CLIFTON,J.HAJDU,C.J.SCHOFIELD REVDAT 3 13-DEC-23 1QIX 1 REMARK DBREF LINK REVDAT 2 24-FEB-09 1QIX 1 VERSN REVDAT 1 14-DEC-99 1QIX 0 JRNL AUTH R.C.WILMOUTH,I.J.CLIFTON,C.V.ROBINSON,P.L.ROACH,R.T.APLIN, JRNL AUTH 2 N.J.WESTWOOD,J.HAJDU,C.J.SCHOFIELD JRNL TITL STRUCTURE OF A SPECIFIC ACYL-ENZYME COMPLEX FORMED BETWEEN JRNL TITL 2 BETA-CASOMORPHIN-7 AND PORCINE PANCREATIC ELASTASE JRNL REF NAT.STRUCT.BIOL. V. 4 456 1997 JRNL REFN ISSN 1072-8368 JRNL PMID 9187653 JRNL DOI 10.1038/NSB0697-456 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.MEYER,G.COLE,R.RADHAKRISHNAN,O.EPP REMARK 1 TITL STRUCTURE OF NATIVE PORCINE PANCREATIC ELASTASE AT 1.65A REMARK 1 TITL 2 RESOLUTION REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V. 44 26 1988 REMARK 1 REFN ISSN 0108-7681 REMARK 1 PMID 3271103 REMARK 1 DOI 10.1107/S0108768187007559 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.GREENBERG,M.L.GROVES,H.J.DOWER REMARK 1 TITL HUMAN BETA-CASEIN REMARK 1 REF J.BIOL.CHEM. V. 259 5132 1984 REMARK 1 REFN ISSN 0021-9258 REMARK 1 PMID 6715339 REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 38.50 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 18368 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 + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.172 REMARK 3 FREE R VALUE : 0.219 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.000 REMARK 3 FREE R VALUE TEST SET COUNT : 772 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1833 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 116 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 15.29 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 17.52 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.149 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.141 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.087 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.881 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.014 ; 0.020 REMARK 3 ANGLE DISTANCE (A) : 0.031 ; 0.040 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.032 ; 0.050 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.023 ; 0.030 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.150 ; 0.150 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.173 ; 0.300 REMARK 3 MULTIPLE TORSION (A) : 0.257 ; 0.300 REMARK 3 H-BOND (X...Y) (A) : 0.136 ; 0.300 REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : 15.000; NULL REMARK 3 PLANAR (DEGREES) : 3.700 ; 7.000 REMARK 3 STAGGERED (DEGREES) : 13.300; 15.000 REMARK 3 TRANSVERSE (DEGREES) : 18.800; 20.000 REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.820 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.497 ; 3.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.340 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.643 ; 3.000 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: CNS ALSO USED. THIS STRUCTURE HAS BEEN REMARK 3 RE-PROCESSED SINCE THE ORIGINAL PAPER WAS PUBLISHED AND REMARK 3 THEREFORE SOME OF THE DISTANCES AND ANGLES BETWEEN THE ATOMS IN REMARK 3 THIS PDB ENTRY MAY NOT EXACTLY AGREE WITH THOSE QUOTED REMARK 4 REMARK 4 1QIX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 18-JUN-99. REMARK 100 THE DEPOSITION ID IS D_1290001030. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-NOV-95 REMARK 200 TEMPERATURE (KELVIN) : 290.0 REMARK 200 PH : 5.00 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) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM V. 6.0 REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 18368 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 38.500 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 4.100 REMARK 200 R MERGE (I) : 0.07700 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 19.4800 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.1 REMARK 200 DATA REDUNDANCY IN SHELL : 4.00 REMARK 200 R MERGE FOR SHELL (I) : 0.28500 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.560 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 3EST REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 33.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLISED FROM 25MM SODIUM REMARK 280 SULPHATE, 25MM SODIUM ACETATE (PH 5.0), 25 MG/ML PPE AND 25 MG/ REMARK 280 ML BCM7., PH 5.00 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 25.64100 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.71850 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 29.12000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.71850 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.64100 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 29.12000 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PQS REMARK 350 TOTAL BURIED SURFACE AREA: 780 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 12370 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -8.1 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 THERE IS AN ESTER BOND BETWEEN THE CARBOXYL TERMINUS OF THE REMARK 400 BETA-CASOMORPHIN-7 PEPTIDE AND THE HYDROXYL SIDE CHAIN OF REMARK 400 SER-195 REMARK 400 REMARK 400 THE RESIDUE NUMBERING SCHEME USED FOR ELASTASE WAS CHOSEN REMARK 400 TO MAXIMISE HOMOLOGY WITH THE NUMBERING FOR REMARK 400 CHYMOTRYPSINOGEN A. 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 TYR A 1 REMARK 465 PRO A 2 REMARK 465 PHE A 3 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 B 23 CG CD OE1 NE2 REMARK 470 GLN B 110 CG CD OE1 NE2 REMARK 470 ARG B 125 CG CD NE CZ NH1 NH2 REMARK 470 ARG B 217A CG CD NE CZ NH1 NH2 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 C ILE A 7 OG SER B 195 1.42 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 SER B 195 CB SER B 195 OG 0.082 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 ARG B 48 NE - CZ - NH2 ANGL. DEV. = -5.1 DEGREES REMARK 500 ARG B 61 CD - NE - CZ ANGL. DEV. = 10.5 DEGREES REMARK 500 TYR B 137 CB - CG - CD2 ANGL. DEV. = -5.0 DEGREES REMARK 500 TYR B 159 CB - CG - CD1 ANGL. DEV. = -4.1 DEGREES REMARK 500 LEU B 160 CA - CB - CG ANGL. DEV. = 14.5 DEGREES REMARK 500 ARG B 188A CD - NE - CZ ANGL. DEV. = -9.2 DEGREES REMARK 500 ARG B 230 NE - CZ - NH1 ANGL. DEV. = 5.2 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 HIS B 71 -54.96 -137.79 REMARK 500 ASN B 115 -160.09 -162.19 REMARK 500 TYR B 171 -115.46 -96.38 REMARK 500 SER B 189 168.60 179.58 REMARK 500 SER B 195 138.24 -39.96 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 B 260 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU B 70 OE2 REMARK 620 2 GLU B 70 OE1 39.7 REMARK 620 3 ASN B 72 O 80.0 79.6 REMARK 620 4 GLN B 75 O 143.2 162.2 84.0 REMARK 620 5 ASN B 77 OD1 115.7 76.2 85.8 95.8 REMARK 620 6 GLU B 80 OE2 102.5 99.6 175.1 96.1 89.3 REMARK 620 7 HOH B2028 O 64.6 104.2 90.8 82.8 176.4 94.1 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA B 260 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 270 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3EST RELATED DB: PDB DBREF 1QIX A 1 7 PDB 1QIX 1QIX 1 7 DBREF 1QIX B 16 245 UNP P00772 EL1_PIG 27 266 SEQRES 1 A 7 TYR PRO PHE VAL GLU PRO ILE SEQRES 1 B 240 VAL VAL GLY GLY THR GLU ALA GLN ARG ASN SER TRP PRO SEQRES 2 B 240 SER GLN ILE SER LEU GLN TYR ARG SER GLY SER SER TRP SEQRES 3 B 240 ALA HIS THR CYS GLY GLY THR LEU ILE ARG GLN ASN TRP SEQRES 4 B 240 VAL MET THR ALA ALA HIS CYS VAL ASP ARG GLU LEU THR SEQRES 5 B 240 PHE ARG VAL VAL VAL GLY GLU HIS ASN LEU ASN GLN ASN SEQRES 6 B 240 ASN GLY THR GLU GLN TYR VAL GLY VAL GLN LYS ILE VAL SEQRES 7 B 240 VAL HIS PRO TYR TRP ASN THR ASP ASP VAL ALA ALA GLY SEQRES 8 B 240 TYR ASP ILE ALA LEU LEU ARG LEU ALA GLN SER VAL THR SEQRES 9 B 240 LEU ASN SER TYR VAL GLN LEU GLY VAL LEU PRO ARG ALA SEQRES 10 B 240 GLY THR ILE LEU ALA ASN ASN SER PRO CYS TYR ILE THR SEQRES 11 B 240 GLY TRP GLY LEU THR ARG THR ASN GLY GLN LEU ALA GLN SEQRES 12 B 240 THR LEU GLN GLN ALA TYR LEU PRO THR VAL ASP TYR ALA SEQRES 13 B 240 ILE CYS SER SER SER SER TYR TRP GLY SER THR VAL LYS SEQRES 14 B 240 ASN SER MET VAL CYS ALA GLY GLY ASP GLY VAL ARG SER SEQRES 15 B 240 GLY CYS GLN GLY ASP SER GLY GLY PRO LEU HIS CYS LEU SEQRES 16 B 240 VAL ASN GLY GLN TYR ALA VAL HIS GLY VAL THR SER PHE SEQRES 17 B 240 VAL SER ARG LEU GLY CYS ASN VAL THR ARG LYS PRO THR SEQRES 18 B 240 VAL PHE THR ARG VAL SER ALA TYR ILE SER TRP ILE ASN SEQRES 19 B 240 ASN VAL ILE ALA SER ASN HET CA B 260 1 HET SO4 B 270 5 HETNAM CA CALCIUM ION HETNAM SO4 SULFATE ION FORMUL 3 CA CA 2+ FORMUL 4 SO4 O4 S 2- FORMUL 5 HOH *116(H2 O) HELIX 1 1 ALA B 55 VAL B 59 5 5 HELIX 2 2 ASP B 98 GLY B 100 5 5 HELIX 3 3 ASP B 164 SER B 169 1 6 HELIX 4 4 TRP B 172 VAL B 176 5 5 HELIX 5 5 TYR B 234 ASN B 245 1 12 SHEET 1 A 7 GLN B 81 GLY B 84 0 SHEET 2 A 7 PHE B 65 VAL B 68 -1 N VAL B 68 O GLN B 81 SHEET 3 A 7 GLN B 30 SER B 36A-1 N GLN B 34 O ARG B 65A SHEET 4 A 7 SER B 37 ARG B 48 -1 N GLY B 44 O ILE B 31 SHEET 5 A 7 TRP B 51 THR B 54 -1 N MET B 53 O THR B 45 SHEET 6 A 7 ALA B 104 LEU B 108 -1 N LEU B 106 O VAL B 52 SHEET 7 A 7 VAL B 85 VAL B 90 -1 N VAL B 89 O LEU B 105 SHEET 1 B 6 GLN B 156 TYR B 159 0 SHEET 2 B 6 CYS B 136 GLY B 140 -1 N GLY B 140 O GLN B 156 SHEET 3 B 6 PRO B 198 VAL B 203 -1 N HIS B 200 O TYR B 137 SHEET 4 B 6 GLN B 206 PHE B 215 -1 N GLY B 211 O LEU B 199 SHEET 5 B 6 THR B 226 ARG B 230 -1 N THR B 229 O VAL B 212 SHEET 6 B 6 MET B 180 ALA B 183 -1 N ALA B 183 O THR B 226 SSBOND 1 CYS B 42 CYS B 58 1555 1555 2.04 SSBOND 2 CYS B 136 CYS B 201 1555 1555 2.00 SSBOND 3 CYS B 168 CYS B 182 1555 1555 2.03 SSBOND 4 CYS B 191 CYS B 220 1555 1555 2.02 LINK OE2 GLU B 70 CA CA B 260 1555 1555 3.35 LINK OE1 GLU B 70 CA CA B 260 1555 1555 2.33 LINK O ASN B 72 CA CA B 260 1555 1555 2.33 LINK O GLN B 75 CA CA B 260 1555 1555 2.32 LINK OD1 ASN B 77 CA CA B 260 1555 1555 2.28 LINK OE2 GLU B 80 CA CA B 260 1555 1555 2.30 LINK CA CA B 260 O HOH B2028 1555 1555 2.37 SITE 1 AC1 6 GLU B 70 ASN B 72 GLN B 75 ASN B 77 SITE 2 AC1 6 GLU B 80 HOH B2028 SITE 1 AC2 6 GLY B 127 ARG B 145 ARG B 230 SER B 232 SITE 2 AC2 6 ALA B 233 HOH B2061 CRYST1 51.282 58.240 75.437 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 0.019500 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017170 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013256 0.00000