HEADER TOXIN 25-OCT-06 2J8K TITLE STRUCTURE OF THE FUSION OF NP275 AND NP276, PENTAPEPTIDE REPEAT TITLE 2 PROTEINS FROM NOSTOC PUNCTIFORME COMPND MOL_ID: 1; COMPND 2 MOLECULE: NP275-NP276; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 OTHER_DETAILS: MUTATION OF STOP CODON OF NP275 TO ASN LEADS TO FUSION COMPND 6 WITH NP276, RESIDUES 1-98 ORIGINATE FROM NP275, RESIDUES 107-181 COMPND 7 ORIGINATE FROM NP276. INTERVENING RESIDUES ORIGINATE FROM PREVIOUSLY COMPND 8 NON-CODING DNA SEQUENCE BETWEEN NP275 AND NP276. SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: NOSTOC PUNCTIFORME; SOURCE 3 ORGANISM_TAXID: 272131; SOURCE 4 ATCC: 29133; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PET28A KEYWDS NOSTOC PUNCTIFORME, PENTAPEPTIDE REPEAT PROTEIN, PRP, RIGHT HANDED KEYWDS 2 QUADRILATERAL BETA HELIX, RHQBH, TOXIN EXPDTA X-RAY DIFFRACTION AUTHOR M.W.VETTING,S.S.HEGDE,K.Z.HAZLETON,J.S.BLANCHARD REVDAT 5 13-DEC-23 2J8K 1 REMARK REVDAT 4 24-FEB-09 2J8K 1 VERSN REVDAT 3 30-OCT-07 2J8K 1 JRNL REVDAT 2 03-APR-07 2J8K 1 JRNL REVDAT 1 07-DEC-06 2J8K 0 JRNL AUTH M.W.VETTING,S.S.HEGDE,K.Z.HAZLETON,J.S.BLANCHARD JRNL TITL STRUCTURAL CHARACTERIZATION OF THE FUSION OF TWO JRNL TITL 2 PENTAPEPTIDE REPEAT PROTEINS, NP275 AND NP276, FROM NOSTOC JRNL TITL 3 PUNCTIFORME: RESURRECTION OF AN ANCESTRAL PROTEIN. JRNL REF PROTEIN SCI. V. 16 755 2007 JRNL REFN ISSN 0961-8368 JRNL PMID 17384236 JRNL DOI 10.1110/PS.062637707 REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0005 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) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 59.03 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 99.7 REMARK 3 NUMBER OF REFLECTIONS : 25323 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) : 0.175 REMARK 3 R VALUE (WORKING SET) : 0.174 REMARK 3 FREE R VALUE : 0.184 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1343 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) : 1.50 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.54 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1825 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.3000 REMARK 3 BIN FREE R VALUE SET COUNT : 90 REMARK 3 BIN FREE R VALUE : 0.3100 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1326 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 17 REMARK 3 SOLVENT ATOMS : 150 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 13.68 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.60000 REMARK 3 B22 (A**2) : -0.29000 REMARK 3 B33 (A**2) : -0.31000 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): 0.076 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.070 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.039 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.976 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.965 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.959 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1415 ; 0.012 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1932 ; 1.412 ; 1.981 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 197 ; 4.137 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 71 ;36.566 ;26.761 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 237 ;15.796 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 8 ;16.346 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 232 ; 0.095 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1085 ; 0.006 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 664 ; 0.236 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 977 ; 0.307 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 142 ; 0.113 ; 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): 42 ; 0.247 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 20 ; 0.125 ; 0.200 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): 949 ; 0.960 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1470 ; 1.375 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 487 ; 2.972 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 458 ; 4.653 ; 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 : 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.PROTEIN IS A MONOMER IN SOLUTION REMARK 4 REMARK 4 2J8K COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 25-OCT-06. REMARK 100 THE DEPOSITION ID IS D_1290030338. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 194 REMARK 200 PH : 6.5 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU IMAGE PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26666 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 15.900 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : 4.800 REMARK 200 R MERGE (I) : 0.03000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 31.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.58 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.8 REMARK 200 DATA REDUNDANCY IN SHELL : 4.60 REMARK 200 R MERGE FOR SHELL (I) : 0.12000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 11.20 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP REMARK 200 STARTING MODEL: PDB ENTRY 2J8I REMARK 200 REMARK 200 REMARK: NONE REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 33.66 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.87 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.6 M AMMONIUM SULFATE 100 MM MES PH REMARK 280 6.5 PROTEIN 10 MG/ML 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 24.80250 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 29.49450 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 27.73500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 29.49450 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 24.80250 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 27.73500 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: PQS 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 -19 REMARK 465 GLY A -18 REMARK 465 SER A -17 REMARK 465 SER A -16 REMARK 465 HIS A -15 REMARK 465 HIS A -14 REMARK 465 HIS A -13 REMARK 465 HIS A -12 REMARK 465 HIS A -11 REMARK 465 HIS A -10 REMARK 465 SER A -9 REMARK 465 SER A -8 REMARK 465 GLY A -7 REMARK 465 LEU A -6 REMARK 465 ASN A 176 REMARK 465 ASN A 177 REMARK 465 ASN A 178 REMARK 465 LEU A 179 REMARK 465 ALA A 180 REMARK 465 THR A 181 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 ILE A 19 14.71 55.97 REMARK 500 ARG A 54 16.51 59.94 REMARK 500 GLN A 99 12.45 58.93 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 MES A1176 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A1177 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2J8I RELATED DB: PDB REMARK 900 STRUCTURE OF NP275, A PENTAPEPTIDE REPEAT PROTEIN FROM NOSTOC REMARK 900 PUNCTIFORME REMARK 999 REMARK 999 SEQUENCE REMARK 999 MUTATION OF STOP CODON OF NP275 TO ASN LEADS TO FUSION REMARK 999 WITH NP276, RESIDUES 1-98 ORIGINATE FROM NP275, RESIDUES REMARK 999 107-181 ORIGINATE FROM NP276. INTERVENING RESIDUES REMARK 999 ORIGINATE FROM PREVIOUSLY NON-CODING DNA SEQUENCE BETWEEN REMARK 999 NP275 AND NP276. INCLUDES N-TERMINAL RESIDUES ORIGINATING REMARK 999 FROM 20 RESIDUE HEXAHISTIDINE TAG. DBREF 2J8K A -19 181 PDB 2J8K 2J8K -19 181 SEQRES 1 A 201 MET GLY SER SER HIS HIS HIS HIS HIS HIS SER SER GLY SEQRES 2 A 201 LEU VAL PRO ARG GLY SER HIS MET ASP VAL GLU LYS LEU SEQRES 3 A 201 ARG GLN LEU TYR ALA ALA GLY GLU ARG ASP PHE SER ILE SEQRES 4 A 201 VAL ASP LEU ARG GLY ALA VAL LEU GLU ASN ILE ASN LEU SEQRES 5 A 201 SER GLY ALA ILE LEU HIS GLY ALA MET LEU ASP GLU ALA SEQRES 6 A 201 ASN LEU GLN GLN ALA ASN LEU SER ARG ALA ASP LEU SER SEQRES 7 A 201 GLY ALA THR LEU ASN GLY ALA ASP LEU ARG GLY ALA ASN SEQRES 8 A 201 LEU SER LYS ALA ASP LEU SER ASP ALA ILE LEU ASP ASN SEQRES 9 A 201 ALA ILE LEU GLU GLY ALA ILE LEU ASP GLU ALA VAL LEU SEQRES 10 A 201 ASN GLN ALA ASN LEU LYS ALA ALA ASN LEU GLU GLN ALA SEQRES 11 A 201 ILE LEU SER HIS ALA ASN ILE ARG GLU ALA ASP LEU SER SEQRES 12 A 201 GLU ALA ASN LEU GLU ALA ALA ASP LEU SER GLY ALA ASP SEQRES 13 A 201 LEU ALA ILE ALA ASP LEU HIS GLN ALA ASN LEU HIS GLN SEQRES 14 A 201 ALA ALA LEU GLU ARG ALA ASN LEU THR GLY ALA ASN LEU SEQRES 15 A 201 GLU ASP ALA ASN LEU GLU GLY THR ILE LEU GLU GLY GLY SEQRES 16 A 201 ASN ASN ASN LEU ALA THR HET MES A1176 12 HET SO4 A1177 5 HETNAM MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID HETNAM SO4 SULFATE ION FORMUL 2 MES C6 H13 N O4 S FORMUL 3 SO4 O4 S 2- FORMUL 4 HOH *150(H2 O) HELIX 1 1 ASP A 2 ALA A 12 1 11 SITE 1 AC1 8 GLY A 64 ASN A 84 ILE A 86 ASN A 98 SITE 2 AC1 8 GLN A 99 ASN A 116 ARG A 118 HOH A2105 SITE 1 AC2 5 HIS A 114 ARG A 154 HOH A2126 HOH A2149 SITE 2 AC2 5 HOH A2150 CRYST1 49.605 55.470 58.989 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 0.020159 0.000000 0.000000 0.00000 SCALE2 0.000000 0.018028 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016952 0.00000