HEADER TRANSCRIPTION 23-FEB-05 1YY7 TITLE CRYSTAL STRUCTURE OF STRINGENT STARVATION PROTEIN A (SSPA), AN RNA TITLE 2 POLYMERASE-ASSOCIATED TRANSCRIPTION FACTOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: STRINGENT STARVATION PROTEIN A; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: SSPA; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: YERSINIA PESTIS; SOURCE 3 ORGANISM_TAXID: 632; SOURCE 4 GENE: SSPA; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: RIL KEYWDS GST FOLD, TRANSCRIPTION EXPDTA X-RAY DIFFRACTION AUTHOR A.-M.HANSEN,Y.GU,M.LI,M.ANDRYKOVITCH,D.S.WAUGH,D.J.JIN,X.JI REVDAT 5 30-AUG-23 1YY7 1 AUTHOR JRNL REMARK REVDAT 4 24-FEB-09 1YY7 1 VERSN REVDAT 3 03-MAY-05 1YY7 1 JRNL REVDAT 2 08-MAR-05 1YY7 1 JRNL REVDAT 1 01-MAR-05 1YY7 0 JRNL AUTH A.-M.HANSEN,Y.GU,M.LI,M.ANDRYKOVITCH,D.S.WAUGH,D.J.JIN,X.JI JRNL TITL STRUCTURAL BASIS FOR THE FUNCTION OF STRINGENT STARVATION JRNL TITL 2 PROTEIN A AS A TRANSCRIPTION FACTOR JRNL REF J.BIOL.CHEM. V. 280 17380 2005 JRNL REFN ISSN 0021-9258 JRNL PMID 15735307 JRNL DOI 10.1074/JBC.M501444200 REMARK 2 REMARK 2 RESOLUTION. 2.02 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) : 2.02 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.46 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 3084777.250 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.4 REMARK 3 NUMBER OF REFLECTIONS : 36005 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) : 0.179 REMARK 3 FREE R VALUE : 0.215 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1785 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 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) : 2.02 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.13 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 79.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4555 REMARK 3 BIN R VALUE (WORKING SET) : 0.2390 REMARK 3 BIN FREE R VALUE : 0.2610 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 252 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.016 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3332 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 441 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 21.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 25.20 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.94000 REMARK 3 B22 (A**2) : -0.94000 REMARK 3 B33 (A**2) : 1.88000 REMARK 3 B12 (A**2) : 0.32000 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) : 0.20 REMARK 3 ESD FROM SIGMAA (A) : 0.17 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) : 0.25 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.22 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.009 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.20 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.920 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) : 2.610 ; 0.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.410 ; 0.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 4.370 ; 0.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 5.610 ; 0.000 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.38 REMARK 3 BSOL : 57.74 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.TOP REMARK 3 PARAMETER FILE 2 : WATER.TOP REMARK 3 PARAMETER FILE 3 : ION.TOP REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN_REP.PARAM REMARK 3 TOPOLOGY FILE 2 : WATER_REP.PARAM REMARK 3 TOPOLOGY FILE 3 : ION.PARAM REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1YY7 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-FEB-05. REMARK 100 THE DEPOSITION ID IS D_1000032061. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 19-FEB-02 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X9B REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.06129 REMARK 200 MONOCHROMATOR : SI 111 CHANNEL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 36005 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.020 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 6.970 REMARK 200 R MERGE (I) : 0.10800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 16.1200 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.02 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.09 REMARK 200 COMPLETENESS FOR SHELL (%) : 97.4 REMARK 200 DATA REDUNDANCY IN SHELL : 5.61 REMARK 200 R MERGE FOR SHELL (I) : 0.51900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.830 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR REMARK 200 SOFTWARE USED: SOLVE 2.01, SHARP REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 51.87 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.65 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: DIAMMONIUM HYDROGEN CITRATE, PEG 3350, REMARK 280 PH 7.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 65 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/6 REMARK 290 6555 X-Y,X,Z+5/6 REMARK 290 7555 Y,X,-Z+2/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+1/3 REMARK 290 10555 -Y,-X,-Z+1/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+5/6 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 121.26000 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 60.63000 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 90.94500 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 30.31500 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 151.57500 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 121.26000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 60.63000 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 30.31500 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 90.94500 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 151.57500 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 300 REMARK: THE ASYMMETRIC UNIT CONTAINS A BIOLOGICAL DIMER OF SSPA 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: 3130 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18900 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -6.0 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 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 451 LIES ON A SPECIAL POSITION. 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 2 REMARK 465 VAL A 3 REMARK 465 LYS A 210 REMARK 465 THR A 211 REMARK 465 ARG A 212 REMARK 465 SER A 213 REMARK 465 MET B 1 REMARK 465 ALA B 2 REMARK 465 VAL B 3 REMARK 465 ALA B 4 REMARK 465 ALA B 5 REMARK 465 ASN B 6 REMARK 465 LYS B 7 REMARK 465 ARG B 8 REMARK 465 SER B 9 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 ARG A 65 -128.56 62.11 REMARK 500 GLU A 71 104.32 82.82 REMARK 500 ALA B 43 -102.57 -129.15 REMARK 500 ARG B 65 -125.52 71.92 REMARK 500 GLU B 71 101.45 84.41 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 CIT B 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CIT B 502 DBREF 1YY7 A 1 213 UNP Q8ZB63 Q8ZB63_YERPE 1 213 DBREF 1YY7 B 1 213 UNP Q8ZB63 Q8ZB63_YERPE 1 213 SEQRES 1 A 213 MET ALA VAL ALA ALA ASN LYS ARG SER VAL MET THR LEU SEQRES 2 A 213 PHE SER GLY PRO THR ASP ILE PHE SER HIS GLN VAL ARG SEQRES 3 A 213 ILE VAL LEU ALA GLU LYS GLY VAL SER VAL GLU ILE GLU SEQRES 4 A 213 GLN VAL GLU ALA ASP ASN LEU PRO GLN ASP LEU ILE ASP SEQRES 5 A 213 LEU ASN PRO TYR ARG THR VAL PRO THR LEU VAL ASP ARG SEQRES 6 A 213 GLU LEU THR LEU TYR GLU SER ARG ILE ILE MET GLU TYR SEQRES 7 A 213 LEU ASP GLU ARG PHE PRO HIS PRO PRO LEU MET PRO VAL SEQRES 8 A 213 TYR PRO VAL ALA ARG GLY SER SER ARG LEU MET MET HIS SEQRES 9 A 213 ARG ILE GLU HIS ASP TRP TYR SER LEU LEU TYR LYS ILE SEQRES 10 A 213 GLU GLN GLY ASN ALA GLN GLU ALA GLU ALA ALA ARG LYS SEQRES 11 A 213 GLN LEU ARG GLU GLU LEU LEU SER ILE ALA PRO VAL PHE SEQRES 12 A 213 ASN GLU THR PRO PHE PHE MET SER GLU GLU PHE SER LEU SEQRES 13 A 213 VAL ASP CYS TYR LEU ALA PRO LEU LEU TRP ARG LEU PRO SEQRES 14 A 213 VAL LEU GLY ILE GLU PHE THR GLY ALA GLY SER LYS GLU SEQRES 15 A 213 LEU LYS GLY TYR MET THR ARG VAL PHE GLU ARG ASP ALA SEQRES 16 A 213 PHE LEU ALA SER LEU THR GLU ALA GLU ARG GLU MET HIS SEQRES 17 A 213 LEU LYS THR ARG SER SEQRES 1 B 213 MET ALA VAL ALA ALA ASN LYS ARG SER VAL MET THR LEU SEQRES 2 B 213 PHE SER GLY PRO THR ASP ILE PHE SER HIS GLN VAL ARG SEQRES 3 B 213 ILE VAL LEU ALA GLU LYS GLY VAL SER VAL GLU ILE GLU SEQRES 4 B 213 GLN VAL GLU ALA ASP ASN LEU PRO GLN ASP LEU ILE ASP SEQRES 5 B 213 LEU ASN PRO TYR ARG THR VAL PRO THR LEU VAL ASP ARG SEQRES 6 B 213 GLU LEU THR LEU TYR GLU SER ARG ILE ILE MET GLU TYR SEQRES 7 B 213 LEU ASP GLU ARG PHE PRO HIS PRO PRO LEU MET PRO VAL SEQRES 8 B 213 TYR PRO VAL ALA ARG GLY SER SER ARG LEU MET MET HIS SEQRES 9 B 213 ARG ILE GLU HIS ASP TRP TYR SER LEU LEU TYR LYS ILE SEQRES 10 B 213 GLU GLN GLY ASN ALA GLN GLU ALA GLU ALA ALA ARG LYS SEQRES 11 B 213 GLN LEU ARG GLU GLU LEU LEU SER ILE ALA PRO VAL PHE SEQRES 12 B 213 ASN GLU THR PRO PHE PHE MET SER GLU GLU PHE SER LEU SEQRES 13 B 213 VAL ASP CYS TYR LEU ALA PRO LEU LEU TRP ARG LEU PRO SEQRES 14 B 213 VAL LEU GLY ILE GLU PHE THR GLY ALA GLY SER LYS GLU SEQRES 15 B 213 LEU LYS GLY TYR MET THR ARG VAL PHE GLU ARG ASP ALA SEQRES 16 B 213 PHE LEU ALA SER LEU THR GLU ALA GLU ARG GLU MET HIS SEQRES 17 B 213 LEU LYS THR ARG SER HET CIT B 501 13 HET CIT B 502 13 HETNAM CIT CITRIC ACID FORMUL 3 CIT 2(C6 H8 O7) FORMUL 5 HOH *441(H2 O) HELIX 1 1 ALA A 4 ARG A 8 5 5 HELIX 2 2 ASP A 19 GLY A 33 1 15 HELIX 3 3 PRO A 47 ASN A 54 1 8 HELIX 4 4 GLU A 71 PHE A 83 1 13 HELIX 5 5 TYR A 92 TRP A 110 1 19 HELIX 6 6 TRP A 110 GLY A 120 1 11 HELIX 7 7 ASN A 121 ILE A 139 1 19 HELIX 8 8 PRO A 141 THR A 146 1 6 HELIX 9 9 SER A 155 ARG A 167 1 13 HELIX 10 10 LEU A 168 GLY A 172 5 5 HELIX 11 11 GLY A 179 GLU A 192 1 14 HELIX 12 12 ARG A 193 LEU A 200 1 8 HELIX 13 13 THR A 201 GLU A 206 1 6 HELIX 14 14 MET A 207 LEU A 209 5 3 HELIX 15 15 ASP B 19 GLY B 33 1 15 HELIX 16 16 PRO B 47 ILE B 51 5 5 HELIX 17 17 GLU B 71 PHE B 83 1 13 HELIX 18 18 TYR B 92 TRP B 110 1 19 HELIX 19 19 TRP B 110 GLY B 120 1 11 HELIX 20 20 ASN B 121 ILE B 139 1 19 HELIX 21 21 ALA B 140 THR B 146 1 7 HELIX 22 22 SER B 155 ARG B 167 1 13 HELIX 23 23 ARG B 167 GLY B 172 1 6 HELIX 24 24 GLY B 179 GLU B 192 1 14 HELIX 25 25 ARG B 193 LEU B 200 1 8 HELIX 26 26 THR B 201 GLU B 206 1 6 SHEET 1 A 4 VAL A 36 GLN A 40 0 SHEET 2 A 4 MET A 11 SER A 15 1 N LEU A 13 O GLU A 39 SHEET 3 A 4 THR A 61 ASP A 64 -1 O THR A 61 N PHE A 14 SHEET 4 A 4 LEU A 67 TYR A 70 -1 O LEU A 69 N LEU A 62 SHEET 1 B 4 GLU B 37 GLN B 40 0 SHEET 2 B 4 MET B 11 SER B 15 1 N MET B 11 O GLU B 37 SHEET 3 B 4 THR B 61 ASP B 64 -1 O VAL B 63 N THR B 12 SHEET 4 B 4 LEU B 67 TYR B 70 -1 O LEU B 69 N LEU B 62 CISPEP 1 VAL A 59 PRO A 60 0 -0.04 CISPEP 2 HIS A 85 PRO A 86 0 -0.01 CISPEP 3 VAL B 59 PRO B 60 0 0.42 CISPEP 4 HIS B 85 PRO B 86 0 -0.55 SITE 1 AC1 11 PRO B 169 MET B 207 HIS B 208 LEU B 209 SITE 2 AC1 11 ARG B 212 HOH B 581 HOH B 618 HOH B 635 SITE 3 AC1 11 HOH B 670 HOH B 672 HOH B 694 SITE 1 AC2 9 TYR A 56 THR A 58 TYR A 70 GLU A 71 SITE 2 AC2 9 HOH A 233 HIS B 104 ARG B 105 HIS B 108 SITE 3 AC2 9 ASP B 109 CRYST1 100.412 100.412 181.890 90.00 90.00 120.00 P 65 2 2 24 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 0.009960 0.005750 0.000000 0.00000 SCALE2 0.000000 0.011500 0.000000 0.00000 SCALE3 0.000000 0.000000 0.005500 0.00000