HEADER HYDROLASE 07-SEP-01 1JXK TITLE ROLE OF ETHE MOBILE LOOP IN THE MEHANISM OF HUMAN SALIVARY AMYLASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-AMYLASE, SALIVARY; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: LACKING THE LOOP RESIDUES 306-310; COMPND 5 SYNONYM: SALIVARY ALPHA-AMYALSE; 1,4-ALPHA-D-GLUCAN GLUCANOHYDROLASE; COMPND 6 EC: 3.2.1.1; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 ORGAN: SALIVARY GLANDS; SOURCE 6 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 7 EXPRESSION_SYSTEM_COMMON: FALL ARMYWORM; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 7108 KEYWDS AMYLASE, MUTAGENESIS, CATALYSIS, HUMAN, SALIVARY, ENZYME, MOBILE KEYWDS 2 LOOP, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR N.RAMASUBBU,C.RAGUNATH,Z.WANG REVDAT 6 16-AUG-23 1JXK 1 REMARK LINK REVDAT 5 25-DEC-19 1JXK 1 SEQADV SEQRES LINK REVDAT 4 04-OCT-17 1JXK 1 REMARK REVDAT 3 24-FEB-09 1JXK 1 VERSN REVDAT 2 27-MAY-03 1JXK 1 JRNL REMARK REVDAT 1 14-SEP-01 1JXK 0 JRNL AUTH N.RAMASUBBU,C.RAGUNATH,P.J.MISHRA JRNL TITL PROBING THE ROLE OF A MOBILE LOOP IN SUBSTRATE BINDING AND JRNL TITL 2 ENZYME ACTIVITY OF HUMAN SALIVARY AMYLASE JRNL REF J.MOL.BIOL. V. 325 1061 2003 JRNL REFN ISSN 0022-2836 JRNL PMID 12527308 JRNL DOI 10.1016/S0022-2836(02)01326-8 REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.0 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 67.42 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.3 REMARK 3 NUMBER OF REFLECTIONS : 38401 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) : 0.176 REMARK 3 R VALUE (WORKING SET) : 0.173 REMARK 3 FREE R VALUE : 0.200 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.100 REMARK 3 FREE R VALUE TEST SET COUNT : 4300 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.95 REMARK 3 REFLECTION IN BIN (WORKING SET) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.1960 REMARK 3 BIN FREE R VALUE SET COUNT : 327 REMARK 3 BIN FREE R VALUE : 0.2440 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3923 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 323 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 16.86 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 16.86 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.00000 REMARK 3 B22 (A**2) : 0.00000 REMARK 3 B33 (A**2) : 0.00000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.100 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.100 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.000 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.800 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.952 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 4043 ; 0.008 ; 0.000 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 5493 ; 1.320 ; 1.900 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 490 ; 4.249 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 662 ;17.794 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 551 ; 0.096 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 3212 ; 0.005 ; 0.000 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 3212 ; 0.005 ; 0.000 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 2026 ; 0.215 ; 0.300 REMARK 3 H-BOND (X...Y) OTHERS (A): 426 ; 0.123 ; 0.500 REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 2429 ; 0.594 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 3910 ; 1.121 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1614 ; 1.635 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 1583 ; 2.589 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : NULL REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : NULL REMARK 3 ION PROBE RADIUS : NULL REMARK 3 SHRINKAGE RADIUS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: MAXIMUM LIKELIHOOD RESTRAINED REMARK 4 REMARK 4 1JXK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-SEP-01. REMARK 100 THE DEPOSITION ID IS D_1000014302. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-OCT-00 REMARK 200 TEMPERATURE (KELVIN) : 200 REMARK 200 PH : 9.0 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 : MIRRORS REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 38401 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 67.420 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.3 REMARK 200 DATA REDUNDANCY : 3.500 REMARK 200 R MERGE (I) : 0.05700 REMARK 200 R SYM (I) : 0.05700 REMARK 200 FOR THE DATA SET : 21.9000 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) : 1.95 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.05700 REMARK 200 R SYM FOR SHELL (I) : 0.15500 REMARK 200 FOR SHELL : 8.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: 1SMD REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.30 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.27 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MPD, CALCIUM CHLORIDE, PH 9.0, VAPOR REMARK 280 DIFFUSION, HANGING DROP AT 298K 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 26.45000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 67.27700 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.86850 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 67.27700 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 26.45000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.86850 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: 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 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 TYR A 31 -56.09 -140.05 REMARK 500 MET A 102 -136.46 -103.80 REMARK 500 SER A 306 -53.23 74.97 REMARK 500 ASP A 312 52.80 -103.74 REMARK 500 PRO A 340 73.60 -66.53 REMARK 500 ARG A 341 96.42 -60.50 REMARK 500 GLU A 344 61.84 -119.24 REMARK 500 ASN A 345 91.93 61.04 REMARK 500 THR A 371 -1.21 75.64 REMARK 500 SER A 409 -106.33 -134.37 REMARK 500 ASP A 428 40.00 -94.60 REMARK 500 PRO A 481 49.08 -79.78 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 492 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASN A 100 OD1 REMARK 620 2 ARG A 158 O 155.7 REMARK 620 3 ASP A 167 OD1 85.0 116.2 REMARK 620 4 ASP A 167 OD2 127.3 77.1 50.4 REMARK 620 5 HIS A 201 O 74.5 81.3 140.3 157.8 REMARK 620 6 HOH A 520 O 69.5 124.7 76.6 73.4 124.4 REMARK 620 7 HOH A 606 O 100.8 72.8 136.1 96.3 81.9 65.4 REMARK 620 8 HOH A 618 O 103.3 74.7 71.5 89.1 80.4 147.9 144.9 REMARK 620 N 1 2 3 4 5 6 7 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 492 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 493 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1SMD RELATED DB: PDB REMARK 900 HUMAN SALIVARY AMYLASE: NATIVE STRUCTURE REMARK 900 RELATED ID: 1JXJ RELATED DB: PDB REMARK 900 RELATED ENTRY DBREF 1JXK A 1 491 UNP P04745 AMYS_HUMAN 16 511 SEQADV 1JXK A UNP P04745 GLY 321 DELETION SEQADV 1JXK A UNP P04745 ALA 322 DELETION SEQADV 1JXK A UNP P04745 GLY 323 DELETION SEQADV 1JXK A UNP P04745 GLY 324 DELETION SEQADV 1JXK A UNP P04745 ALA 325 DELETION SEQRES 1 A 491 PCA TYR SER SER ASN THR GLN GLN GLY ARG THR SER ILE SEQRES 2 A 491 VAL HIS LEU PHE GLU TRP ARG TRP VAL ASP ILE ALA LEU SEQRES 3 A 491 GLU CYS GLU ARG TYR LEU ALA PRO LYS GLY PHE GLY GLY SEQRES 4 A 491 VAL GLN VAL SER PRO PRO ASN GLU ASN VAL ALA ILE HIS SEQRES 5 A 491 ASN PRO PHE ARG PRO TRP TRP GLU ARG TYR GLN PRO VAL SEQRES 6 A 491 SER TYR LYS LEU CYS THR ARG SER GLY ASN GLU ASP GLU SEQRES 7 A 491 PHE ARG ASN MET VAL THR ARG CYS ASN ASN VAL GLY VAL SEQRES 8 A 491 ARG ILE TYR VAL ASP ALA VAL ILE ASN HIS MET CYS GLY SEQRES 9 A 491 ASN ALA VAL SER ALA GLY THR SER SER THR CYS GLY SER SEQRES 10 A 491 TYR PHE ASN PRO GLY SER ARG ASP PHE PRO ALA VAL PRO SEQRES 11 A 491 TYR SER GLY TRP ASP PHE ASN ASP GLY LYS CYS LYS THR SEQRES 12 A 491 GLY SER GLY ASP ILE GLU ASN TYR ASN ASP ALA THR GLN SEQRES 13 A 491 VAL ARG ASP CYS ARG LEU SER GLY LEU LEU ASP LEU ALA SEQRES 14 A 491 LEU GLY LYS ASP TYR VAL ARG SER LYS ILE ALA GLU TYR SEQRES 15 A 491 MET ASN HIS LEU ILE ASP ILE GLY VAL ALA GLY PHE ARG SEQRES 16 A 491 ILE ASP ALA SER LYS HIS MET TRP PRO GLY ASP ILE LYS SEQRES 17 A 491 ALA ILE LEU ASP LYS LEU HIS ASN LEU ASN SER ASN TRP SEQRES 18 A 491 PHE PRO GLU GLY SER LYS PRO PHE ILE TYR GLN GLU VAL SEQRES 19 A 491 ILE ASP LEU GLY GLY GLU PRO ILE LYS SER SER ASP TYR SEQRES 20 A 491 PHE GLY ASN GLY ARG VAL THR GLU PHE LYS TYR GLY ALA SEQRES 21 A 491 LYS LEU GLY THR VAL ILE ARG LYS TRP ASN GLY GLU LYS SEQRES 22 A 491 MET SER TYR LEU LYS ASN TRP GLY GLU GLY TRP GLY PHE SEQRES 23 A 491 MET PRO SER ASP ARG ALA LEU VAL PHE VAL ASP ASN HIS SEQRES 24 A 491 ASP ASN GLN ARG GLY HIS SER ILE LEU THR PHE TRP ASP SEQRES 25 A 491 ALA ARG LEU TYR LYS MET ALA VAL GLY PHE MET LEU ALA SEQRES 26 A 491 HIS PRO TYR GLY PHE THR ARG VAL MET SER SER TYR ARG SEQRES 27 A 491 TRP PRO ARG TYR PHE GLU ASN GLY LYS ASP VAL ASN ASP SEQRES 28 A 491 TRP VAL GLY PRO PRO ASN ASP ASN GLY VAL THR LYS GLU SEQRES 29 A 491 VAL THR ILE ASN PRO ASP THR THR CYS GLY ASN ASP TRP SEQRES 30 A 491 VAL CYS GLU HIS ARG TRP ARG GLN ILE ARG ASN MET VAL SEQRES 31 A 491 ASN PHE ARG ASN VAL VAL ASP GLY GLN PRO PHE THR ASN SEQRES 32 A 491 TRP TYR ASP ASN GLY SER ASN GLN VAL ALA PHE GLY ARG SEQRES 33 A 491 GLY ASN ARG GLY PHE ILE VAL PHE ASN ASN ASP ASP TRP SEQRES 34 A 491 THR PHE SER LEU THR LEU GLN THR GLY LEU PRO ALA GLY SEQRES 35 A 491 THR TYR CYS ASP VAL ILE SER GLY ASP LYS ILE ASN GLY SEQRES 36 A 491 ASN CYS THR GLY ILE LYS ILE TYR VAL SER ASP ASP GLY SEQRES 37 A 491 LYS ALA HIS PHE SER ILE SER ASN SER ALA GLU ASP PRO SEQRES 38 A 491 PHE ILE ALA ILE HIS ALA GLU SER LYS LEU MODRES 1JXK PCA A 1 GLN PYROGLUTAMIC ACID HET PCA A 1 8 HET CA A 492 1 HET CL A 493 1 HETNAM PCA PYROGLUTAMIC ACID HETNAM CA CALCIUM ION HETNAM CL CHLORIDE ION FORMUL 1 PCA C5 H7 N O3 FORMUL 2 CA CA 2+ FORMUL 3 CL CL 1- FORMUL 4 HOH *323(H2 O) HELIX 1 1 ARG A 20 TYR A 31 1 12 HELIX 2 2 PRO A 57 GLN A 63 5 7 HELIX 3 3 ASN A 75 VAL A 89 1 15 HELIX 4 4 SER A 132 PHE A 136 5 5 HELIX 5 5 ASP A 153 CYS A 160 1 8 HELIX 6 6 ARG A 161 SER A 163 5 3 HELIX 7 7 LYS A 172 GLY A 190 1 19 HELIX 8 8 ALA A 198 MET A 202 5 5 HELIX 9 9 TRP A 203 ASP A 212 1 10 HELIX 10 10 LYS A 243 PHE A 248 5 6 HELIX 11 11 PHE A 256 LYS A 268 1 13 HELIX 12 12 LYS A 273 TRP A 280 5 8 HELIX 13 13 GLY A 281 GLY A 285 5 5 HELIX 14 14 ASP A 300 GLY A 304 5 5 HELIX 15 15 THR A 309 TRP A 311 5 3 HELIX 16 16 ASP A 312 HIS A 326 1 15 HELIX 17 17 CYS A 379 ARG A 382 5 4 HELIX 18 18 TRP A 383 ASP A 397 1 15 HELIX 19 19 GLU A 488 LYS A 490 5 3 SHEET 1 A 9 SER A 12 LEU A 16 0 SHEET 2 A 9 GLY A 39 VAL A 42 1 O GLY A 39 N VAL A 14 SHEET 3 A 9 ARG A 92 ALA A 97 1 O ARG A 92 N VAL A 40 SHEET 4 A 9 GLY A 193 ILE A 196 1 O GLY A 193 N VAL A 95 SHEET 5 A 9 PHE A 229 GLN A 232 1 O PHE A 229 N PHE A 194 SHEET 6 A 9 ARG A 252 THR A 254 1 N ARG A 252 O ILE A 230 SHEET 7 A 9 ALA A 292 VAL A 294 1 N LEU A 293 O VAL A 253 SHEET 8 A 9 PHE A 330 SER A 335 1 O PHE A 330 N VAL A 294 SHEET 9 A 9 SER A 12 LEU A 16 1 O ILE A 13 N VAL A 333 SHEET 1 B 2 HIS A 101 GLY A 104 0 SHEET 2 B 2 LEU A 165 ASP A 167 -1 N LEU A 166 O CYS A 103 SHEET 1 D 4 PHE A 401 ASP A 406 0 SHEET 2 D 4 GLN A 411 ARG A 416 -1 O ALA A 413 N TYR A 405 SHEET 3 D 4 GLY A 420 ASN A 425 -1 O GLY A 420 N ARG A 416 SHEET 4 D 4 PHE A 482 HIS A 486 -1 O ILE A 483 N VAL A 423 SHEET 1 E 2 PHE A 431 GLN A 436 0 SHEET 2 E 2 LYS A 469 ILE A 474 -1 O ALA A 470 N LEU A 435 SHEET 1 F 2 GLY A 442 CYS A 445 0 SHEET 2 F 2 LYS A 461 VAL A 464 -1 O ILE A 462 N TYR A 444 SSBOND 1 CYS A 28 CYS A 86 1555 1555 2.03 SSBOND 2 CYS A 70 CYS A 115 1555 1555 2.04 SSBOND 3 CYS A 141 CYS A 160 1555 1555 2.04 SSBOND 4 CYS A 373 CYS A 379 1555 1555 2.04 SSBOND 5 CYS A 445 CYS A 457 1555 1555 2.04 LINK C PCA A 1 N TYR A 2 1555 1555 1.33 LINK OD1 ASN A 100 CA CA A 492 1555 1555 2.39 LINK O ARG A 158 CA CA A 492 1555 1555 2.39 LINK OD1 ASP A 167 CA CA A 492 1555 1555 2.55 LINK OD2 ASP A 167 CA CA A 492 1555 1555 2.56 LINK O HIS A 201 CA CA A 492 1555 1555 2.40 LINK CA CA A 492 O HOH A 520 1555 1555 2.57 LINK CA CA A 492 O HOH A 606 1555 1555 2.50 LINK CA CA A 492 O HOH A 618 1555 1555 2.43 CISPEP 1 ASN A 53 PRO A 54 0 -0.72 CISPEP 2 VAL A 129 PRO A 130 0 -4.07 SITE 1 AC1 7 ASN A 100 ARG A 158 ASP A 167 HIS A 201 SITE 2 AC1 7 HOH A 520 HOH A 606 HOH A 618 SITE 1 AC2 3 ARG A 195 ASN A 298 ARG A 332 CRYST1 52.900 75.737 134.554 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 0.018904 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013204 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007432 0.00000 HETATM 1 N PCA A 1 12.189 59.461 0.562 1.00 15.01 N HETATM 2 CA PCA A 1 11.780 58.912 1.897 1.00 14.63 C HETATM 3 CB PCA A 1 12.155 57.438 1.913 1.00 14.91 C HETATM 4 CG PCA A 1 13.420 57.358 1.063 1.00 15.29 C HETATM 5 CD PCA A 1 13.135 58.456 0.071 1.00 14.78 C HETATM 6 OE PCA A 1 13.648 58.459 -1.052 1.00 16.35 O HETATM 7 C PCA A 1 12.514 59.589 3.061 1.00 14.64 C HETATM 8 O PCA A 1 12.199 59.331 4.207 1.00 14.01 O