HEADER IMMUNE SYSTEM 04-JUL-23 8JZA TITLE CRYSTAL STRUCTURE OF SINGLE DOMAIN ANTIBODY KT75 OF HUMAN TITLE 2 THYROGLOBULIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: SINGLE DOMAIN ANTIBODY KT75 OF HUMAN THYROGLOBULIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CAMELUS DROMEDARIUS; SOURCE 3 ORGANISM_TAXID: 9838; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS SINGLE DOMAIN ANTIBODIES THYROGLOBULIN NANOBODIES, IMMUNE SYSTEM EXPDTA X-RAY DIFFRACTION AUTHOR H.MISTRY,J.KUMARASAMY,S.KUMARI,S.P.KULKARNI,G.D.GUPTA REVDAT 2 30-OCT-24 8JZA 1 REMARK REVDAT 1 10-JUL-24 8JZA 0 JRNL AUTH H.MISTRY,J.KUMARASAMY,S.KUMARI,S.P.KULKARNI,G.D.GUPTA JRNL TITL CRYSTAL STRUCTURE OF SINGLE DOMAIN ANTIBODY KT75 OF HUMAN JRNL TITL 2 THYROGLOBULIN JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.35 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.8.0267 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.35 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 38.24 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 26796 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : FREE R-VALUE REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.130 REMARK 3 FREE R VALUE : 0.174 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.922 REMARK 3 FREE R VALUE TEST SET COUNT : 1319 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) : 1.35 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.39 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1871 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 BIN R VALUE (WORKING SET) : 0.2170 REMARK 3 BIN FREE R VALUE SET COUNT : 103 REMARK 3 BIN FREE R VALUE : 0.2700 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 978 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 13 REMARK 3 SOLVENT ATOMS : 93 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 12.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 22.74 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.88100 REMARK 3 B22 (A**2) : -0.44000 REMARK 3 B33 (A**2) : -0.44100 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): 0.048 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.050 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.033 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.824 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.979 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.972 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1054 ; 0.014 ; 0.012 REMARK 3 BOND LENGTHS OTHERS (A): 888 ; 0.001 ; 0.018 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1434 ; 1.621 ; 1.639 REMARK 3 BOND ANGLES OTHERS (DEGREES): 2015 ; 0.577 ; 1.569 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 138 ; 6.795 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 60 ;30.852 ;22.000 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 164 ;10.769 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 8 ;19.117 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 130 ; 0.082 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1223 ; 0.013 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 247 ; 0.001 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 177 ; 0.386 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 48 ; 0.202 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 492 ; 0.200 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 56 ; 0.159 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL 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): 528 ; 4.907 ; 2.104 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 520 ; 4.720 ; 2.069 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 660 ; 5.175 ; 3.133 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): 657 ; 5.104 ; 3.109 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 526 ; 5.148 ; 2.365 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): 527 ; 5.143 ; 2.364 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 770 ; 6.079 ; 3.412 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): 771 ; 6.075 ; 3.411 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): 1942 ; 9.416 ; 3.000 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 : MASK BULK SOLVENT REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 8JZA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 05-JUL-23. REMARK 100 THE DEPOSITION ID IS D_1300039181. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 02-MAR-22 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : RRCAT INDUS-2 REMARK 200 BEAMLINE : PX-BL21 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97777 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MAR CCD 165 MM REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26851 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.350 REMARK 200 RESOLUTION RANGE LOW (A) : 38.750 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 7.900 REMARK 200 R MERGE (I) : 0.05500 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 18.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.35 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.37 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 7.80 REMARK 200 R MERGE FOR SHELL (I) : 0.91600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 38.60 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.00 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 4M K-ACETATE, 0.1 M SODIUM HEPES PH REMARK 280 7.0, 10% GLYCEROL, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE REMARK 280 293K 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 19.37550 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 32.11850 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 23.79450 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 32.11850 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 19.37550 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 23.79450 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 ALA A 1 REMARK 465 HIS A 129 REMARK 465 HIS A 130 REMARK 465 HIS A 131 REMARK 465 HIS A 132 REMARK 465 HIS A 133 REMARK 465 HIS A 134 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 O HOH A 304 O HOH A 372 2.16 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O HOH A 309 O HOH A 385 3655 2.07 REMARK 500 OH TYR A 96 O ACT A 203 3645 2.13 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 LEU A 49 -51.99 -124.93 REMARK 500 TRP A 105 -63.42 -146.54 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 393 DISTANCE = 5.92 ANGSTROMS 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 K A 204 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ALA A 65 O REMARK 620 2 LYS A 66 O 71.8 REMARK 620 3 PHE A 69 O 73.1 126.0 REMARK 620 4 HOH A 369 O 104.4 64.4 86.7 REMARK 620 5 HOH A 379 O 157.4 121.8 84.4 70.7 REMARK 620 6 HOH A 392 O 123.7 69.4 162.1 93.7 78.9 REMARK 620 N 1 2 3 4 5 DBREF 8JZA A 1 134 PDB 8JZA 8JZA 1 134 SEQRES 1 A 134 ALA ASP VAL GLN LEU GLN ALA SER GLY GLY GLY SER VAL SEQRES 2 A 134 GLN THR GLY GLY SER LEU ARG LEU SER CYS ALA ALA SER SEQRES 3 A 134 GLY TYR SER GLY SER ARG TYR SER MET ALA TRP PHE ARG SEQRES 4 A 134 GLN VAL PRO GLY LYS GLU ARG GLU GLY LEU ALA PHE ILE SEQRES 5 A 134 ASN ASP ASP GLY SER ARG THR HIS TYR GLU GLY SER ALA SEQRES 6 A 134 LYS ASP ARG PHE GLY ILE SER ARG ASP ASN ALA GLN ASN SEQRES 7 A 134 THR MET TYR LEU GLN MET ASN GLY LEU LYS PRO GLU ASP SEQRES 8 A 134 THR ALA MET TYR TYR CYS ALA ALA ARG GLU SER THR TRP SEQRES 9 A 134 TRP ILE THR VAL PRO LEU GLY GLU ALA GLU TYR PRO TYR SEQRES 10 A 134 TRP GLY GLN GLY THR GLN VAL THR VAL SER SER HIS HIS SEQRES 11 A 134 HIS HIS HIS HIS HET ACT A 201 7 HET ACT A 202 7 HET ACT A 203 7 HET K A 204 1 HETNAM ACT ACETATE ION HETNAM K POTASSIUM ION FORMUL 2 ACT 3(C2 H3 O2 1-) FORMUL 5 K K 1+ FORMUL 6 HOH *93(H2 O) HELIX 1 AA1 SER A 64 ARG A 68 1 5 HELIX 2 AA2 LYS A 88 THR A 92 5 5 HELIX 3 AA3 GLY A 111 TYR A 115 5 5 SHEET 1 AA1 4 GLN A 4 SER A 8 0 SHEET 2 AA1 4 LEU A 19 SER A 26 -1 O SER A 26 N GLN A 4 SHEET 3 AA1 4 THR A 79 MET A 84 -1 O MET A 84 N LEU A 19 SHEET 4 AA1 4 PHE A 69 ASP A 74 -1 N ASP A 74 O THR A 79 SHEET 1 AA2 6 GLY A 11 GLN A 14 0 SHEET 2 AA2 6 THR A 122 SER A 127 1 O THR A 125 N VAL A 13 SHEET 3 AA2 6 ALA A 93 ARG A 100 -1 N TYR A 95 O THR A 122 SHEET 4 AA2 6 SER A 34 GLN A 40 -1 N PHE A 38 O TYR A 96 SHEET 5 AA2 6 GLU A 47 ILE A 52 -1 O ALA A 50 N TRP A 37 SHEET 6 AA2 6 THR A 59 TYR A 61 -1 O HIS A 60 N PHE A 51 SHEET 1 AA3 4 GLY A 11 GLN A 14 0 SHEET 2 AA3 4 THR A 122 SER A 127 1 O THR A 125 N VAL A 13 SHEET 3 AA3 4 ALA A 93 ARG A 100 -1 N TYR A 95 O THR A 122 SHEET 4 AA3 4 TYR A 117 TRP A 118 -1 O TYR A 117 N ALA A 99 SSBOND 1 CYS A 23 CYS A 97 1555 1555 2.15 LINK O ALA A 65 K K A 204 1555 1555 2.97 LINK O LYS A 66 K K A 204 1555 1555 2.85 LINK O PHE A 69 K K A 204 1555 1555 2.57 LINK K K A 204 O HOH A 369 1555 1555 2.83 LINK K K A 204 O HOH A 379 1555 1555 2.79 LINK K K A 204 O HOH A 392 1555 4556 2.82 CRYST1 38.751 47.589 64.237 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 0.025806 0.000000 0.000000 0.00000 SCALE2 0.000000 0.021013 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015567 0.00000