HEADER DE NOVO PROTEIN 28-JUL-15 5CWI TITLE CRYSTAL STRUCTURE OF DE NOVO DESIGNED HELICAL REPEAT PROTEIN DHR18 COMPND MOL_ID: 1; COMPND 2 MOLECULE: DESIGNED HELICAL REPEAT PROTEIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 3 ORGANISM_TAXID: 32630; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PET21_NESG KEYWDS HELICAL REPEAT PROTEIN, DE NOVO PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR G.BHABHA,D.C.EKIERT REVDAT 3 06-JAN-16 5CWI 1 JRNL REVDAT 2 30-DEC-15 5CWI 1 JRNL REVDAT 1 16-DEC-15 5CWI 0 JRNL AUTH T.J.BRUNETTE,F.PARMEGGIANI,P.S.HUANG,G.BHABHA,D.C.EKIERT, JRNL AUTH 2 S.E.TSUTAKAWA,G.L.HURA,J.A.TAINER,D.BAKER JRNL TITL EXPLORING THE REPEAT PROTEIN UNIVERSE THROUGH COMPUTATIONAL JRNL TITL 2 PROTEIN DESIGN. JRNL REF NATURE V. 528 580 2015 JRNL REFN ESSN 1476-4687 JRNL PMID 26675729 JRNL DOI 10.1038/NATURE16162 REMARK 2 REMARK 2 RESOLUTION. 1.75 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE: 1.9_1692) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.75 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 43.28 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.960 REMARK 3 COMPLETENESS FOR RANGE (%) : 96.0 REMARK 3 NUMBER OF REFLECTIONS : 17246 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.204 REMARK 3 R VALUE (WORKING SET) : 0.202 REMARK 3 FREE R VALUE : 0.225 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.020 REMARK 3 FREE R VALUE TEST SET COUNT : 866 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 43.2901 - 3.1800 0.97 2772 149 0.1802 0.1889 REMARK 3 2 3.1800 - 2.5241 0.97 2761 148 0.1983 0.2195 REMARK 3 3 2.5241 - 2.2051 0.97 2762 142 0.1886 0.2197 REMARK 3 4 2.2051 - 2.0035 0.96 2729 145 0.2232 0.2675 REMARK 3 5 2.0035 - 1.8599 0.95 2707 149 0.2739 0.3148 REMARK 3 6 1.8599 - 1.7500 0.94 2649 133 0.3411 0.3972 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.20 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.260 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 28.480 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 26.83 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 38.41 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.003 1990 REMARK 3 ANGLE : 0.497 2692 REMARK 3 CHIRALITY : 0.024 291 REMARK 3 PLANARITY : 0.002 377 REMARK 3 DIHEDRAL : 12.669 802 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 6 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: ( CHAIN A AND RESID 2:27 ) REMARK 3 ORIGIN FOR THE GROUP (A): 11.0805 3.6691 18.2975 REMARK 3 T TENSOR REMARK 3 T11: 0.3210 T22: 0.3034 REMARK 3 T33: 0.3710 T12: 0.0140 REMARK 3 T13: -0.0252 T23: -0.0533 REMARK 3 L TENSOR REMARK 3 L11: 0.9039 L22: 0.1562 REMARK 3 L33: 0.6434 L12: 0.0576 REMARK 3 L13: -0.0031 L23: 0.3133 REMARK 3 S TENSOR REMARK 3 S11: -0.1234 S12: -0.1188 S13: 0.4005 REMARK 3 S21: 0.1293 S22: -0.2637 S23: 0.3168 REMARK 3 S31: -0.4054 S32: -0.4859 S33: -0.1314 REMARK 3 TLS GROUP : 2 REMARK 3 SELECTION: ( CHAIN A AND RESID 28:57 ) REMARK 3 ORIGIN FOR THE GROUP (A): 19.6124 0.1193 15.7951 REMARK 3 T TENSOR REMARK 3 T11: 0.2705 T22: 0.3191 REMARK 3 T33: 0.2710 T12: -0.0576 REMARK 3 T13: 0.0001 T23: -0.0085 REMARK 3 L TENSOR REMARK 3 L11: 0.7155 L22: 1.3818 REMARK 3 L33: 0.3864 L12: -0.2615 REMARK 3 L13: -0.2870 L23: 0.6917 REMARK 3 S TENSOR REMARK 3 S11: 0.0047 S12: 0.1218 S13: 0.0641 REMARK 3 S21: -0.1529 S22: 0.2244 S23: -0.2401 REMARK 3 S31: -0.3071 S32: 0.7000 S33: 0.0091 REMARK 3 TLS GROUP : 3 REMARK 3 SELECTION: ( CHAIN A AND RESID 58:87 ) REMARK 3 ORIGIN FOR THE GROUP (A): 9.4934 -5.4200 13.9066 REMARK 3 T TENSOR REMARK 3 T11: 0.2044 T22: 0.2631 REMARK 3 T33: 0.2619 T12: -0.0136 REMARK 3 T13: 0.0043 T23: -0.0069 REMARK 3 L TENSOR REMARK 3 L11: 0.8253 L22: 1.7684 REMARK 3 L33: 1.2036 L12: 0.0713 REMARK 3 L13: -0.0885 L23: -1.1350 REMARK 3 S TENSOR REMARK 3 S11: -0.0333 S12: -0.0883 S13: 0.0426 REMARK 3 S21: -0.1499 S22: 0.0186 S23: 0.2033 REMARK 3 S31: 0.2415 S32: -1.1052 S33: -0.0035 REMARK 3 TLS GROUP : 4 REMARK 3 SELECTION: ( CHAIN A AND RESID 88:147 ) REMARK 3 ORIGIN FOR THE GROUP (A): 15.6230 -11.2318 14.6318 REMARK 3 T TENSOR REMARK 3 T11: 0.1665 T22: 0.1862 REMARK 3 T33: 0.2071 T12: -0.0009 REMARK 3 T13: -0.0029 T23: -0.0027 REMARK 3 L TENSOR REMARK 3 L11: 0.6638 L22: 2.9157 REMARK 3 L33: 2.3046 L12: -0.2721 REMARK 3 L13: -1.1222 L23: -0.2176 REMARK 3 S TENSOR REMARK 3 S11: -0.0038 S12: 0.0387 S13: 0.1033 REMARK 3 S21: -0.1601 S22: 0.1031 S23: -0.0629 REMARK 3 S31: 0.0474 S32: 0.1796 S33: -0.0012 REMARK 3 TLS GROUP : 5 REMARK 3 SELECTION: ( CHAIN A AND RESID 148:207 ) REMARK 3 ORIGIN FOR THE GROUP (A): 16.1098 -20.5137 14.1890 REMARK 3 T TENSOR REMARK 3 T11: 0.2640 T22: 0.2227 REMARK 3 T33: 0.2487 T12: 0.0049 REMARK 3 T13: -0.0185 T23: 0.0056 REMARK 3 L TENSOR REMARK 3 L11: 0.9916 L22: 1.8208 REMARK 3 L33: 1.4084 L12: 0.3585 REMARK 3 L13: 0.1764 L23: -0.3658 REMARK 3 S TENSOR REMARK 3 S11: -0.0705 S12: -0.0218 S13: -0.0836 REMARK 3 S21: -0.0852 S22: 0.1171 S23: -0.0715 REMARK 3 S31: 0.1189 S32: 0.1093 S33: 0.0002 REMARK 3 TLS GROUP : 6 REMARK 3 SELECTION: ( CHAIN A AND RESID 208:234 ) REMARK 3 ORIGIN FOR THE GROUP (A): 16.2395 -27.8609 18.3725 REMARK 3 T TENSOR REMARK 3 T11: 0.6228 T22: 0.4132 REMARK 3 T33: 0.4779 T12: -0.0367 REMARK 3 T13: 0.0594 T23: -0.0743 REMARK 3 L TENSOR REMARK 3 L11: 0.7130 L22: 0.9632 REMARK 3 L33: 1.0631 L12: 0.2889 REMARK 3 L13: 0.4850 L23: -0.5911 REMARK 3 S TENSOR REMARK 3 S11: -0.4492 S12: 0.3175 S13: -0.6927 REMARK 3 S21: 0.0978 S22: 0.1087 S23: -0.3516 REMARK 3 S31: 0.9919 S32: 0.1792 S33: -0.0014 REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 5CWI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-AUG-15. REMARK 100 THE DEPOSITION ID IS D_1000212086. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-NOV-14 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 4.2 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 8.3.1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.111 REMARK 200 MONOCHROMATOR : DOUBLE FLAT CRYSTAL, SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315R REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XSCALE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17261 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.750 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.8 REMARK 200 DATA REDUNDANCY : 2.100 REMARK 200 R MERGE (I) : 0.04600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 9.8200 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.75 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.80 REMARK 200 COMPLETENESS FOR SHELL (%) : 94.3 REMARK 200 DATA REDUNDANCY IN SHELL : 2.10 REMARK 200 R MERGE FOR SHELL (I) : 0.84900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.130 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 (%): NULL REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): NULL REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M PHOSPHATE-CITRATE, PH 4.2, 40% REMARK 280 (V/V) PEG 300, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,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 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 MET A 1 REMARK 465 ALA A 235 REMARK 465 GLN A 236 REMARK 465 GLU A 237 REMARK 465 HIS A 238 REMARK 465 PRO A 239 REMARK 465 ASN A 240 REMARK 465 ALA A 241 REMARK 465 TRP A 242 REMARK 465 LEU A 243 REMARK 465 GLU A 244 REMARK 465 HIS A 245 REMARK 465 HIS A 246 REMARK 465 HIS A 247 REMARK 465 HIS A 248 REMARK 465 HIS A 249 REMARK 465 HIS A 250 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 ASN A 60 35.68 38.17 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 A 301 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 5CWB RELATED DB: PDB REMARK 900 RELATED ID: 5CWC RELATED DB: PDB REMARK 900 RELATED ID: 5CWD RELATED DB: PDB REMARK 900 RELATED ID: 5CWF RELATED DB: PDB REMARK 900 RELATED ID: 5CWG RELATED DB: PDB REMARK 900 RELATED ID: 5CWH RELATED DB: PDB REMARK 900 RELATED ID: 5CWJ RELATED DB: PDB REMARK 900 RELATED ID: 5CWK RELATED DB: PDB REMARK 900 RELATED ID: 5CWL RELATED DB: PDB REMARK 900 RELATED ID: 5CWM RELATED DB: PDB REMARK 900 RELATED ID: 5CWN RELATED DB: PDB REMARK 900 RELATED ID: 5CWO RELATED DB: PDB REMARK 900 RELATED ID: 5CWP RELATED DB: PDB REMARK 900 RELATED ID: 5CWQ RELATED DB: PDB DBREF 5CWI A 1 250 PDB 5CWI 5CWI 1 250 SEQRES 1 A 250 MET ASP ILE GLU LYS LEU CYS LYS LYS ALA GLU SER GLU SEQRES 2 A 250 ALA ARG GLU ALA ARG SER LYS ALA GLU GLU LEU ARG GLN SEQRES 3 A 250 ARG HIS PRO ASP SER GLN ALA ALA ARG ASP ALA GLN LYS SEQRES 4 A 250 LEU ALA SER GLN ALA GLU GLU ALA VAL LYS LEU ALA CYS SEQRES 5 A 250 GLU LEU ALA GLN GLU HIS PRO ASN ALA ASP ILE ALA LYS SEQRES 6 A 250 LEU CYS ILE LYS ALA ALA SER GLU ALA ALA GLU ALA ALA SEQRES 7 A 250 SER LYS ALA ALA GLU LEU ALA GLN ARG HIS PRO ASP SER SEQRES 8 A 250 GLN ALA ALA ARG ASP ALA ILE LYS LEU ALA SER GLN ALA SEQRES 9 A 250 ALA GLU ALA VAL LYS LEU ALA CYS GLU LEU ALA GLN GLU SEQRES 10 A 250 HIS PRO ASN ALA ASP ILE ALA LYS LEU CYS ILE LYS ALA SEQRES 11 A 250 ALA SER GLU ALA ALA GLU ALA ALA SER LYS ALA ALA GLU SEQRES 12 A 250 LEU ALA GLN ARG HIS PRO ASP SER GLN ALA ALA ARG ASP SEQRES 13 A 250 ALA ILE LYS LEU ALA SER GLN ALA ALA GLU ALA VAL LYS SEQRES 14 A 250 LEU ALA CYS GLU LEU ALA GLN GLU HIS PRO ASN ALA ASP SEQRES 15 A 250 ILE ALA LYS LYS CYS ILE LYS ALA ALA SER GLU ALA ALA SEQRES 16 A 250 GLU GLU ALA SER LYS ALA ALA GLU GLU ALA GLN ARG HIS SEQRES 17 A 250 PRO ASP SER GLN LYS ALA ARG ASP GLU ILE LYS GLU ALA SEQRES 18 A 250 SER GLN LYS ALA GLU GLU VAL LYS GLU ARG CYS GLU ARG SEQRES 19 A 250 ALA GLN GLU HIS PRO ASN ALA TRP LEU GLU HIS HIS HIS SEQRES 20 A 250 HIS HIS HIS HET PO4 A 301 5 HETNAM PO4 PHOSPHATE ION FORMUL 2 PO4 O4 P 3- FORMUL 3 HOH *64(H2 O) HELIX 1 AA1 ASP A 2 HIS A 28 1 27 HELIX 2 AA2 SER A 31 HIS A 58 1 28 HELIX 3 AA3 ALA A 61 HIS A 88 1 28 HELIX 4 AA4 SER A 91 HIS A 118 1 28 HELIX 5 AA5 ALA A 121 HIS A 148 1 28 HELIX 6 AA6 SER A 151 HIS A 178 1 28 HELIX 7 AA7 ALA A 181 HIS A 208 1 28 HELIX 8 AA8 SER A 211 CYS A 232 1 22 SSBOND 1 CYS A 7 CYS A 52 1555 1555 2.03 SSBOND 2 CYS A 187 CYS A 232 1555 1555 2.03 SITE 1 AC1 10 GLU A 23 LEU A 24 HIS A 28 GLN A 86 SITE 2 AC1 10 GLU A 177 HIS A 178 PRO A 179 ASN A 180 SITE 3 AC1 10 ALA A 181 HOH A 421 CRYST1 24.920 43.650 48.750 116.56 90.72 102.19 P 1 1 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 0.040128 0.008672 0.005067 0.00000 SCALE2 0.000000 0.023438 0.012150 0.00000 SCALE3 0.000000 0.000000 0.023107 0.00000