PDB Short entry for 1RC7 HEADER HYDROLASE/RNA 03-NOV-03 1RC7 TITLE CRYSTAL STRUCTURE OF RNASE III MUTANT E110K FROM AQUIFEX AEOLICUS TITLE 2 COMPLEXED WITH DS-RNA AT 2.15 ANGSTROM RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-R(*GP*GP*CP*GP*CP*GP*CP*GP*CP*C)-3'; COMPND 3 CHAIN: B, C, D, E; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: RIBONUCLEASE III; COMPND 7 CHAIN: A; COMPND 8 SYNONYM: RNASE III; COMPND 9 EC: 3.1.26.3; COMPND 10 ENGINEERED: YES; COMPND 11 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 MOL_ID: 2; SOURCE 4 ORGANISM_SCIENTIFIC: AQUIFEX AEOLICUS; SOURCE 5 ORGANISM_TAXID: 63363; SOURCE 6 GENE: RNC, AQ_946; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 9 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 10 EXPRESSION_SYSTEM_VECTOR_TYPE: PHPK1409; SOURCE 11 EXPRESSION_SYSTEM_PLASMID: PDONR201, PDEST-42 KEYWDS RIBONUCLEASE III, DS-RNA, RNA INTERFERENCE, ENDONUCLEOLYTIC CLEAVAGE, KEYWDS 2 HYDROLASE-RNA COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.BLASZCZYK,J.GAN,X.JI REVDAT 5 30-AUG-23 1RC7 1 AUTHOR JRNL REVDAT 4 23-AUG-23 1RC7 1 REMARK REVDAT 3 27-OCT-21 1RC7 1 REMARK SEQADV REVDAT 2 24-FEB-09 1RC7 1 VERSN REVDAT 1 30-MAR-04 1RC7 0 JRNL AUTH J.BLASZCZYK,J.GAN,J.E.TROPEA,D.L.COURT,D.S.WAUGH,X.JI JRNL TITL NONCATALYTIC ASSEMBLY OF RIBONUCLEASE III WITH JRNL TITL 2 DOUBLE-STRANDED RNA. JRNL REF STRUCTURE V. 12 457 2004 JRNL REFN ISSN 0969-2126 JRNL PMID 15016361 JRNL DOI 10.1016/J.STR.2004.02.004 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.BLASZCZYK,J.E.TROPEA,M.BUBUNENKO,K.M.ROUTZAHN,D.S.WAUGH, REMARK 1 AUTH 2 D.L.COURT,X.JI REMARK 1 TITL CRYSTALLOGRAPHIC AND MODELLING STUDIES OF RNASE III SUGGEST REMARK 1 TITL 2 A MECHANISM FOR DOUBLE-STRANDED RNA CLEAVAGE REMARK 1 REF STRUCTURE V. 9 1225 2001 REMARK 1 REFN ISSN 0969-2126 REMARK 1 DOI 10.1016/S0969-2126(01)00685-2 REMARK 2 REMARK 2 RESOLUTION. 2.15 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.15 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 28.47 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 91.6 REMARK 3 NUMBER OF REFLECTIONS : 18715 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 SET) : 0.192 REMARK 3 FREE R VALUE : 0.242 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.800 REMARK 3 FREE R VALUE TEST SET COUNT : 1091 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.15 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.28 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 71.20 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2251 REMARK 3 BIN R VALUE (WORKING SET) : 0.3230 REMARK 3 BIN FREE R VALUE : 0.4210 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 135 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.036 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1838 REMARK 3 NUCLEIC ACID ATOMS : 848 REMARK 3 HETEROGEN ATOMS : 8 REMARK 3 SOLVENT ATOMS : 236 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 44.70 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 47.20 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 5.42000 REMARK 3 B22 (A**2) : -4.31000 REMARK 3 B33 (A**2) : -1.11000 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 COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.26 REMARK 3 ESD FROM SIGMAA (A) : 0.29 REMARK 3 LOW RESOLUTION CUTOFF (A) : 30.0 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.35 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.37 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.000 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 15.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.960 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 3.470 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 4.290 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 4.990 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 6.450 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 54.99 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : DNA-RNA_REP.PARAM REMARK 3 PARAMETER FILE 5 : TRIS.PAR REMARK 3 PARAMETER FILE 6 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : DNA-RNA.TOP REMARK 3 TOPOLOGY FILE 5 : TRIS.TOP REMARK 3 TOPOLOGY FILE 6 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1RC7 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-NOV-03. REMARK 100 THE DEPOSITION ID IS D_1000020647. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-JUL-03 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 22-ID REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.000 REMARK 200 MONOCHROMATOR : SILICON REMARK 200 OPTICS : MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : BRUKER PROTEUM 300 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 18715 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.150 REMARK 200 RESOLUTION RANGE LOW (A) : 28.470 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 91.6 REMARK 200 DATA REDUNDANCY : 5.050 REMARK 200 R MERGE (I) : 0.05800 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 22.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.15 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.28 REMARK 200 COMPLETENESS FOR SHELL (%) : 71.2 REMARK 200 DATA REDUNDANCY IN SHELL : 2.50 REMARK 200 R MERGE FOR SHELL (I) : 0.26200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.800 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: PDB 1I4S REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.79 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.36 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG4000, TRIS-HCL, SODIUM CHLORIDE, PH REMARK 280 7.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 292K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 53.33250 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 53.33250 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 29.14300 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 59.07100 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 29.14300 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 59.07100 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 53.33250 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 29.14300 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 59.07100 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 53.33250 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 29.14300 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 59.07100 REMARK 290 SMTRY3 8 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: DECAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, C, D, E, 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 350 BIOMT1 2 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 236.28400 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 319 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 329 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 435 LIES ON A SPECIAL POSITION. 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 LYS A 181 53.99 -155.62 REMARK 500 LYS A 191 -127.53 59.70 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 TRS A 300 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1I4S RELATED DB: PDB REMARK 900 THE CRYSTAL STRUCTURE OF UNLIGATED RNASE III ENDONUCLEASE DOMAIN REMARK 900 FROM AQUIFEX AEOLICUS REMARK 900 RELATED ID: 1JFZ RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF A MN(II)-COMPLEX OF RNASE III ENDONUCLEASE REMARK 900 DOMAIN FROM AQUIFEX AEOLICUS REMARK 900 RELATED ID: 1O0W RELATED DB: PDB REMARK 900 THE CRYSTAL STRUCTURE OF UNLIGATED RNASE III FROM THERMOTOGA REMARK 900 MARITIMA REMARK 900 RELATED ID: 1RC5 RELATED DB: PDB REMARK 900 THE CRYSTAL STRUCTURE OF MG(II)-COMPLEX OF RNASE III ENDONUCLEASE REMARK 900 DOMAIN FROM AQUIFEX AEOLICUS DBREF 1RC7 A 1 220 UNP O67082 RNC_AQUAE 1 220 DBREF 1RC7 B 1 10 PDB 1RC7 1RC7 1 10 DBREF 1RC7 C 11 20 PDB 1RC7 1RC7 11 20 DBREF 1RC7 D 21 30 PDB 1RC7 1RC7 21 30 DBREF 1RC7 E 31 40 PDB 1RC7 1RC7 31 40 SEQADV 1RC7 LYS A 110 UNP O67082 GLU 110 ENGINEERED MUTATION SEQRES 1 B 10 G G C G C G C G C C SEQRES 1 C 10 G G C G C G C G C C SEQRES 1 D 10 G G C G C G C G C C SEQRES 1 E 10 G G C G C G C G C C SEQRES 1 A 220 MET LYS MET LEU GLU GLN LEU GLU LYS LYS LEU GLY TYR SEQRES 2 A 220 THR PHE LYS ASP LYS SER LEU LEU GLU LYS ALA LEU THR SEQRES 3 A 220 HIS VAL SER TYR SER LYS LYS GLU HIS TYR GLU THR LEU SEQRES 4 A 220 GLU PHE LEU GLY ASP ALA LEU VAL ASN PHE PHE ILE VAL SEQRES 5 A 220 ASP LEU LEU VAL GLN TYR SER PRO ASN LYS ARG GLU GLY SEQRES 6 A 220 PHE LEU SER PRO LEU LYS ALA TYR LEU ILE SER GLU GLU SEQRES 7 A 220 PHE PHE ASN LEU LEU ALA GLN LYS LEU GLU LEU HIS LYS SEQRES 8 A 220 PHE ILE ARG ILE LYS ARG GLY LYS ILE ASN GLU THR ILE SEQRES 9 A 220 ILE GLY ASP VAL PHE LYS ALA LEU TRP ALA ALA VAL TYR SEQRES 10 A 220 ILE ASP SER GLY ARG ASP ALA ASN PHE THR ARG GLU LEU SEQRES 11 A 220 PHE TYR LYS LEU PHE LYS GLU ASP ILE LEU SER ALA ILE SEQRES 12 A 220 LYS GLU GLY ARG VAL LYS LYS ASP TYR LYS THR ILE LEU SEQRES 13 A 220 GLN GLU ILE THR GLN LYS ARG TRP LYS GLU ARG PRO GLU SEQRES 14 A 220 TYR ARG LEU ILE SER VAL GLU GLY PRO HIS HIS LYS LYS SEQRES 15 A 220 LYS PHE ILE VAL GLU ALA LYS ILE LYS GLU TYR ARG THR SEQRES 16 A 220 LEU GLY GLU GLY LYS SER LYS LYS GLU ALA GLU GLN ARG SEQRES 17 A 220 ALA ALA GLU GLU LEU ILE LYS LEU LEU GLU GLU SER HET TRS A 300 8 HETNAM TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL HETSYN TRS TRIS BUFFER FORMUL 6 TRS C4 H12 N O3 1+ FORMUL 7 HOH *236(H2 O) HELIX 1 1 LYS A 2 GLY A 12 1 11 HELIX 2 2 ASP A 17 LEU A 25 1 9 HELIX 3 3 TYR A 36 SER A 59 1 24 HELIX 4 4 ARG A 63 ILE A 75 1 13 HELIX 5 5 SER A 76 LYS A 86 1 11 HELIX 6 6 LEU A 87 PHE A 92 5 6 HELIX 7 7 ASN A 101 SER A 120 1 20 HELIX 8 8 ASP A 123 GLU A 145 1 23 HELIX 9 9 ASP A 151 LYS A 165 1 15 HELIX 10 10 SER A 201 SER A 220 1 20 SHEET 1 A 3 GLU A 169 GLU A 176 0 SHEET 2 A 3 LYS A 183 ILE A 190 -1 O LYS A 189 N GLU A 169 SHEET 3 A 3 TYR A 193 GLY A 199 -1 O GLY A 197 N VAL A 186 SITE 1 AC1 9 GLU A 34 HIS A 35 GLU A 37 THR A 38 SITE 2 AC1 9 ARG A 63 HOH A 317 HOH A 408 C C 20 SITE 3 AC1 9 HOH C 36 CRYST1 58.286 118.142 106.665 90.00 90.00 90.00 C 2 2 21 32 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 0.017157 0.000000 0.000000 0.00000 SCALE2 0.000000 0.008464 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009375 0.00000