HEADER HYDROLASE 16-AUG-13 4MAK TITLE CRYSTAL STRUCTURE OF A PUTATIVE SSRNA ENDONUCLEASE CAS2, CRISPR TITLE 2 ADAPTATION PROTEIN FROM E.COLI COMPND MOL_ID: 1; COMPND 2 MOLECULE: CRISPR-ASSOCIATED ENDORIBONUCLEASE CAS2; COMPND 3 CHAIN: A, B; COMPND 4 EC: 3.1.-.-; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 511145; SOURCE 4 STRAIN: K12 SUBSTR. MG1655; SOURCE 5 GENE: YGBF, CAS2, B2754, JW5438; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3) KEYWDS CAS2, CRISPR, MCSG, PSI-BIOLOGY, STRUCTURAL GENOMICS, MIDWEST CENTER KEYWDS 2 FOR STRUCTURAL GENOMICS, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR B.NOCEK,T.SKARINA,G.BROWN,A.YAKUNIN,A.JOACHIMIAK,MIDWEST CENTER FOR AUTHOR 2 STRUCTURAL GENOMICS (MCSG) REVDAT 2 28-FEB-24 4MAK 1 REMARK REVDAT 1 04-SEP-13 4MAK 0 JRNL AUTH B.NOCEK,T.SKARINA,G.BROWN,A.YAKUNIN,A.JOACHIMIAK JRNL TITL CRYSTAL STRUCTURE OF A PUTATIVE SSRNA ENDONUCLEASE CAS2, JRNL TITL 2 CRISPR ADAPTATION PROTEIN FROM E.COLI JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.7.0029 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 33.03 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 83.1 REMARK 3 NUMBER OF REFLECTIONS : 45153 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) : 0.136 REMARK 3 R VALUE (WORKING SET) : 0.132 REMARK 3 FREE R VALUE : 0.173 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 2427 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) : 1.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.13 REMARK 3 REFLECTION IN BIN (WORKING SET) : 812 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 20.68 REMARK 3 BIN R VALUE (WORKING SET) : 0.2450 REMARK 3 BIN FREE R VALUE SET COUNT : 49 REMARK 3 BIN FREE R VALUE : 0.2860 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1165 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 7 REMARK 3 SOLVENT ATOMS : 231 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 21.90 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 22.27 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.30000 REMARK 3 B22 (A**2) : 0.19000 REMARK 3 B33 (A**2) : 0.11000 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.034 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.037 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.019 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.863 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.982 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.966 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1210 ; 0.016 ; 0.020 REMARK 3 BOND LENGTHS OTHERS (A): 1186 ; 0.001 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1648 ; 1.763 ; 1.941 REMARK 3 BOND ANGLES OTHERS (DEGREES): 2703 ; 0.846 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 153 ; 5.680 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 55 ;32.248 ;23.455 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 201 ;12.708 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 11 ;20.558 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 190 ; 0.098 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1369 ; 0.010 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 286 ; 0.001 ; 0.020 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): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): NULL ; NULL ; NULL 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): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL 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): 2396 ; 3.263 ; 3.000 REMARK 3 SPHERICITY; FREE ATOMS (A**2): 18 ;37.657 ; 5.000 REMARK 3 SPHERICITY; BONDED ATOMS (A**2): 2591 ;12.010 ; 5.000 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 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: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 4MAK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 19-AUG-13. REMARK 100 THE DEPOSITION ID IS D_1000081673. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 04-OCT-11 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 19-ID REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9794 REMARK 200 MONOCHROMATOR : DOUBLE CRYSTAL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315R REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-3000 REMARK 200 DATA SCALING SOFTWARE : HKL-3000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 53336 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.100 REMARK 200 RESOLUTION RANGE LOW (A) : 33.030 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.0 REMARK 200 DATA REDUNDANCY : 5.600 REMARK 200 R MERGE (I) : 0.08300 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 28.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.12 REMARK 200 COMPLETENESS FOR SHELL (%) : 52.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.43000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP, CCP4 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 25.36 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.65 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20% PEG3350, 0.1M KCL, 10MM MGCL2, NA REMARK 280 CITR 0.1M PH 6, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 289K 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 15.02400 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 34.98600 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 33.00450 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 34.98600 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 15.02400 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 33.00450 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 1850 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 7780 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -19.0 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 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 LEU A 75 REMARK 465 ASN A 76 REMARK 465 ARG A 77 REMARK 465 ARG A 78 REMARK 465 THR A 79 REMARK 465 PRO A 80 REMARK 465 VAL A 81 REMARK 465 ASP A 82 REMARK 465 LEU A 83 REMARK 465 ASP A 84 REMARK 465 GLY A 85 REMARK 465 LEU A 86 REMARK 465 ARG A 87 REMARK 465 LEU A 88 REMARK 465 VAL A 89 REMARK 465 SER A 90 REMARK 465 PHE A 91 REMARK 465 LEU A 92 REMARK 465 PRO A 93 REMARK 465 VAL A 94 REMARK 465 MET B 1 REMARK 465 ARG B 78 REMARK 465 THR B 79 REMARK 465 PRO B 80 REMARK 465 VAL B 81 REMARK 465 ASP B 82 REMARK 465 LEU B 83 REMARK 465 ASP B 84 REMARK 465 GLY B 85 REMARK 465 LEU B 86 REMARK 465 ARG B 87 REMARK 465 LEU B 88 REMARK 465 VAL B 89 REMARK 465 SER B 90 REMARK 465 PHE B 91 REMARK 465 LEU B 92 REMARK 465 PRO B 93 REMARK 465 VAL B 94 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 GLU B 53 CG CD OE1 OE2 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 GLU A 52 -119.64 54.77 REMARK 500 ASN A 63 45.84 -96.22 REMARK 500 GLU B 52 -118.89 63.90 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 PEG B 301 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: MCSG-APC108948 RELATED DB: TARGETTRACK DBREF 4MAK A 1 94 UNP P45956 CAS2_ECOLI 1 94 DBREF 4MAK B 1 94 UNP P45956 CAS2_ECOLI 1 94 SEQRES 1 A 94 MET SER MET LEU VAL VAL VAL THR GLU ASN VAL PRO PRO SEQRES 2 A 94 ARG LEU ARG GLY ARG LEU ALA ILE TRP LEU LEU GLU VAL SEQRES 3 A 94 ARG ALA GLY VAL TYR VAL GLY ASP VAL SER ALA LYS ILE SEQRES 4 A 94 ARG GLU MET ILE TRP GLU GLN ILE ALA GLY LEU ALA GLU SEQRES 5 A 94 GLU GLY ASN VAL VAL MET ALA TRP ALA THR ASN THR GLU SEQRES 6 A 94 THR GLY PHE GLU PHE GLN THR PHE GLY LEU ASN ARG ARG SEQRES 7 A 94 THR PRO VAL ASP LEU ASP GLY LEU ARG LEU VAL SER PHE SEQRES 8 A 94 LEU PRO VAL SEQRES 1 B 94 MET SER MET LEU VAL VAL VAL THR GLU ASN VAL PRO PRO SEQRES 2 B 94 ARG LEU ARG GLY ARG LEU ALA ILE TRP LEU LEU GLU VAL SEQRES 3 B 94 ARG ALA GLY VAL TYR VAL GLY ASP VAL SER ALA LYS ILE SEQRES 4 B 94 ARG GLU MET ILE TRP GLU GLN ILE ALA GLY LEU ALA GLU SEQRES 5 B 94 GLU GLY ASN VAL VAL MET ALA TRP ALA THR ASN THR GLU SEQRES 6 B 94 THR GLY PHE GLU PHE GLN THR PHE GLY LEU ASN ARG ARG SEQRES 7 B 94 THR PRO VAL ASP LEU ASP GLY LEU ARG LEU VAL SER PHE SEQRES 8 B 94 LEU PRO VAL HET PEG B 301 7 HETNAM PEG DI(HYDROXYETHYL)ETHER FORMUL 3 PEG C4 H10 O3 FORMUL 4 HOH *231(H2 O) HELIX 1 1 PRO A 12 LEU A 23 1 12 HELIX 2 2 SER A 36 ALA A 51 1 16 HELIX 3 3 PRO B 12 LEU B 23 1 12 HELIX 4 4 SER B 36 ALA B 51 1 16 SHEET 1 A 5 LEU A 24 ARG A 27 0 SHEET 2 A 5 VAL A 30 ASP A 34 -1 O VAL A 32 N LEU A 24 SHEET 3 A 5 MET A 3 GLU A 9 -1 N VAL A 6 O TYR A 31 SHEET 4 A 5 ASN A 55 ALA A 61 -1 O ALA A 59 N VAL A 5 SHEET 5 A 5 PHE A 68 PHE A 73 -1 O GLN A 71 N MET A 58 SHEET 1 B 5 LEU B 24 ARG B 27 0 SHEET 2 B 5 VAL B 30 ASP B 34 -1 O VAL B 32 N LEU B 24 SHEET 3 B 5 MET B 3 GLU B 9 -1 N VAL B 6 O TYR B 31 SHEET 4 B 5 ASN B 55 ALA B 61 -1 O ALA B 59 N VAL B 5 SHEET 5 B 5 PHE B 68 GLY B 74 -1 O GLN B 71 N MET B 58 SITE 1 AC1 11 LEU A 24 HOH A 188 LEU B 24 PHE B 70 SITE 2 AC1 11 HOH B 422 HOH B 436 HOH B 440 HOH B 449 SITE 3 AC1 11 HOH B 479 HOH B 500 HOH B 514 CRYST1 30.048 66.009 69.972 90.00 90.00 90.00 P 21 21 21 8 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 0.033280 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015149 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014291 0.00000