HEADER STRUCTURAL GENOMICS, UNKNOWN FUNCTION 11-SEP-12 4H1X TITLE CRYSTAL STRUCTURE OF A PHOSPHATE ABC TRANSPORTER, PHOSPHATE-BINDING TITLE 2 PROTEIN (SP_2084) FROM STREPTOCOCCUS PNEUMONIAE TIGR4 AT 1.77 A TITLE 3 RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHOSPHATE-BINDING PROTEIN PSTS 2; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: UNP RESIDUES 28-291; COMPND 5 SYNONYM: PBP 2; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOCOCCUS PNEUMONIAE; SOURCE 3 ORGANISM_TAXID: 170187; SOURCE 4 STRAIN: ATCC BAA-334 / TIGR4; SOURCE 5 GENE: PSTS2, SP_2084; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: PB1; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: SPEEDET KEYWDS PERIPLASMIC BINDING PROTEIN, PF12849 FAMILY, STRUCTURAL GENOMICS, KEYWDS 2 JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE KEYWDS 3 INITIATIVE, PSI-BIOLOGY, UNKNOWN FUNCTION EXPDTA X-RAY DIFFRACTION AUTHOR JOINT CENTER FOR STRUCTURAL GENOMICS (JCSG) REVDAT 3 01-FEB-23 4H1X 1 REMARK SEQADV LINK REVDAT 2 15-NOV-17 4H1X 1 REMARK REVDAT 1 17-OCT-12 4H1X 0 JRNL AUTH JOINT CENTER FOR STRUCTURAL GENOMICS (JCSG) JRNL TITL CRYSTAL STRUCTURE OF A PHOSPHATE ABC TRANSPORTER, JRNL TITL 2 PHOSPHATE-BINDING PROTEIN (SP_2084) FROM STREPTOCOCCUS JRNL TITL 3 PNEUMONIAE TIGR4 AT 1.77 A RESOLUTION JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.77 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : BUSTER-TNT 2.10.0 REMARK 3 AUTHORS : BRICOGNE,BLANC,BRANDL,FLENSBURG,KELLER, REMARK 3 : PACIOREK,ROVERSI,SMART,VONRHEIN,WOMACK, REMARK 3 : MATTHEWS,TEN EYCK,TRONRUD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.77 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.48 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 94.6 REMARK 3 NUMBER OF REFLECTIONS : 23733 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) : 0.171 REMARK 3 R VALUE (WORKING SET) : 0.169 REMARK 3 FREE R VALUE : 0.200 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1211 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 12 REMARK 3 BIN RESOLUTION RANGE HIGH (ANGSTROMS) : 1.77 REMARK 3 BIN RESOLUTION RANGE LOW (ANGSTROMS) : 1.85 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 94.64 REMARK 3 REFLECTIONS IN BIN (WORKING + TEST SET) : 2856 REMARK 3 BIN R VALUE (WORKING + TEST SET) : 0.2411 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2725 REMARK 3 BIN R VALUE (WORKING SET) : 0.2381 REMARK 3 BIN FREE R VALUE : 0.3053 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.59 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 131 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1911 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 14 REMARK 3 SOLVENT ATOMS : 258 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 19.22 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 22.91 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.64610 REMARK 3 B22 (A**2) : -0.18220 REMARK 3 B33 (A**2) : -0.46390 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.15970 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.205 REMARK 3 DPI (BLOW EQ-10) BASED ON R VALUE (A) : NULL REMARK 3 DPI (BLOW EQ-9) BASED ON FREE R VALUE (A) : NULL REMARK 3 DPI (CRUICKSHANK) BASED ON R VALUE (A) : NULL REMARK 3 DPI (CRUICKSHANK) BASED ON FREE R VALUE (A) : NULL REMARK 3 REMARK 3 REFERENCES: BLOW, D. (2002) ACTA CRYST D58, 792-797 REMARK 3 CRUICKSHANK, D.W.J. (1999) ACTA CRYST D55, 583-601 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.954 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.942 REMARK 3 REMARK 3 NUMBER OF GEOMETRIC FUNCTION TERMS DEFINED : 15 REMARK 3 TERM COUNT WEIGHT FUNCTION. REMARK 3 BOND LENGTHS : 2064 ; 2.000 ; HARMONIC REMARK 3 BOND ANGLES : 2825 ; 2.000 ; HARMONIC REMARK 3 TORSION ANGLES : 1033 ; 2.000 ; SINUSOIDAL REMARK 3 TRIGONAL CARBON PLANES : 61 ; 2.000 ; HARMONIC REMARK 3 GENERAL PLANES : 319 ; 5.000 ; HARMONIC REMARK 3 ISOTROPIC THERMAL FACTORS : 2064 ; 20.000 ; HARMONIC REMARK 3 BAD NON-BONDED CONTACTS : NULL ; NULL ; NULL REMARK 3 IMPROPER TORSIONS : NULL ; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES : NULL ; NULL ; NULL REMARK 3 CHIRAL IMPROPER TORSION : 304 ; 5.000 ; SEMIHARMONIC REMARK 3 SUM OF OCCUPANCIES : NULL ; NULL ; NULL REMARK 3 UTILITY DISTANCES : NULL ; NULL ; NULL REMARK 3 UTILITY ANGLES : NULL ; NULL ; NULL REMARK 3 UTILITY TORSION : NULL ; NULL ; NULL REMARK 3 IDEAL-DIST CONTACT TERM : 2653 ; 4.000 ; SEMIHARMONIC REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.09 REMARK 3 PEPTIDE OMEGA TORSION ANGLES (DEGREES) : 3.52 REMARK 3 OTHER TORSION ANGLES (DEGREES) : 2.69 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: A 35 A 291 REMARK 3 ORIGIN FOR THE GROUP (A): 22.9599 8.5676 17.4319 REMARK 3 T TENSOR REMARK 3 T11: -0.0155 T22: -0.0182 REMARK 3 T33: -0.0639 T12: -0.0158 REMARK 3 T13: 0.0061 T23: 0.0006 REMARK 3 L TENSOR REMARK 3 L11: 0.6809 L22: 0.9205 REMARK 3 L33: 0.3377 L12: 0.4396 REMARK 3 L13: 0.2074 L23: 0.3014 REMARK 3 S TENSOR REMARK 3 S11: 0.0348 S12: 0.0030 S13: -0.0165 REMARK 3 S21: 0.0024 S22: -0.0341 S23: -0.0182 REMARK 3 S31: 0.0104 S32: -0.0306 S33: -0.0008 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: 1. A MET-INHIBITION PROTOCOL WAS USED REMARK 3 FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. REMARK 3 THE OCCUPANCY OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO REMARK 3 0.75 TO ACCOUNT FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL REMARK 3 S-MET INCORPORATION. 2. CITRATE (CIT) AND CHLORIDE ION HAS BEEN REMARK 3 MODELED INTO THE STRUCTURE. 3. EIGHT RESIDUES AT THE N-TERMINUS REMARK 3 ARE DISORDERED AND ARE MISSING IN THE MODEL. REMARK 4 REMARK 4 4H1X COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-SEP-12. REMARK 100 THE DEPOSITION ID IS D_1000074915. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 27-JUN-12 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 4.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL11-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97922,0.91837,0.97883 REMARK 200 MONOCHROMATOR : SINGLE CRYSTAL SI(111) BENT REMARK 200 OPTICS : FLAT MIRROR (VERTICAL FOCUSING); REMARK 200 SINGLE CRYSTAL SI(111) BENT REMARK 200 MONOCHROMATOR (HORIZONTAL REMARK 200 FOCUSING) REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XSCALE MARCH 15, 2012 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 23737 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.770 REMARK 200 RESOLUTION RANGE LOW (A) : 29.482 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 88.6 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.04600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 11.2400 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.77 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.83 REMARK 200 COMPLETENESS FOR SHELL (%) : 88.1 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.33900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.200 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: MAD REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD REMARK 200 SOFTWARE USED: SHELX, SHARP, SHELXD REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.59 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.30 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.00M LITHIUM CHLORIDE, 30.00% REMARK 280 POLYETHYLENE GLYCOL 6000, 0.1M CITRIC ACID PH 4.0, NANODROP, REMARK 280 VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 277K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z 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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 36.37150 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 30.81200 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 36.37150 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 30.81200 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: 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 GLY A 0 REMARK 465 ALA A 28 REMARK 465 SER A 29 REMARK 465 LYS A 30 REMARK 465 GLN A 31 REMARK 465 SER A 32 REMARK 465 ALA A 33 REMARK 465 SER A 34 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 LYS A 61 CG CD CE NZ REMARK 470 ASP A 62 CG OD1 OD2 REMARK 470 LYS A 65 CG CD CE NZ 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 ASP A 62 59.56 -99.56 REMARK 500 ASN A 217 -66.05 -145.06 REMARK 500 SER A 237 39.56 -97.32 REMARK 500 SER A 247 -0.29 77.49 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 CL A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CIT A 302 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: JCSG-417529 RELATED DB: TARGETTRACK REMARK 999 REMARK 999 SEQUENCE REMARK 999 THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG REMARK 999 MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING REMARK 999 ONLY A GLYCINE (0) FOLLOWED BY RESIDUES 28-291 OF THE TARGET REMARK 999 SEQUENCE. DBREF 4H1X A 28 291 UNP P0C2M5 PSTS2_STRPN 28 291 SEQADV 4H1X GLY A 0 UNP P0C2M5 EXPRESSION TAG SEQRES 1 A 265 GLY ALA SER LYS GLN SER ALA SER GLY THR ILE GLU VAL SEQRES 2 A 265 ILE SER ARG GLU ASN GLY SER GLY THR ARG GLY ALA PHE SEQRES 3 A 265 THR GLU ILE THR GLY ILE LEU LYS LYS ASP GLY ASP LYS SEQRES 4 A 265 LYS ILE ASP ASN THR ALA LYS THR ALA VAL ILE GLN ASN SEQRES 5 A 265 SER THR GLU GLY VAL LEU SER ALA VAL GLN GLY ASN ALA SEQRES 6 A 265 ASN ALA ILE GLY TYR ILE SER LEU GLY SER LEU THR LYS SEQRES 7 A 265 SER VAL LYS ALA LEU GLU ILE ASP GLY VAL LYS ALA SER SEQRES 8 A 265 ARG ASP THR VAL LEU ASP GLY GLU TYR PRO LEU GLN ARG SEQRES 9 A 265 PRO PHE ASN ILE VAL TRP SER SER ASN LEU SER LYS LEU SEQRES 10 A 265 GLY GLN ASP PHE ILE SER PHE ILE HIS SER LYS GLN GLY SEQRES 11 A 265 GLN GLN VAL VAL THR ASP ASN LYS PHE ILE GLU ALA LYS SEQRES 12 A 265 THR GLU THR THR GLU TYR THR SER GLN HIS LEU SER GLY SEQRES 13 A 265 LYS LEU SER VAL VAL GLY SER THR SER VAL SER SER LEU SEQRES 14 A 265 MSE GLU LYS LEU ALA GLU ALA TYR LYS LYS GLU ASN PRO SEQRES 15 A 265 GLU VAL THR ILE ASP ILE THR SER ASN GLY SER SER ALA SEQRES 16 A 265 GLY ILE THR ALA VAL LYS GLU LYS THR ALA ASP ILE GLY SEQRES 17 A 265 MSE VAL SER ARG GLU LEU THR PRO GLU GLU GLY LYS SER SEQRES 18 A 265 LEU THR HIS ASP ALA ILE ALA LEU ASP GLY ILE ALA VAL SEQRES 19 A 265 VAL VAL ASN ASN ASP ASN LYS ALA SER GLN VAL SER MSE SEQRES 20 A 265 ALA GLU LEU ALA ASP VAL PHE SER GLY LYS LEU THR THR SEQRES 21 A 265 TRP ASP LYS ILE LYS MODRES 4H1X MSE A 196 MET SELENOMETHIONINE MODRES 4H1X MSE A 235 MET SELENOMETHIONINE MODRES 4H1X MSE A 273 MET SELENOMETHIONINE HET MSE A 196 8 HET MSE A 235 8 HET MSE A 273 13 HET CL A 301 1 HET CIT A 302 17 HETNAM MSE SELENOMETHIONINE HETNAM CL CHLORIDE ION HETNAM CIT CITRIC ACID FORMUL 1 MSE 3(C5 H11 N O2 SE) FORMUL 2 CL CL 1- FORMUL 3 CIT C6 H8 O7 FORMUL 4 HOH *258(H2 O) HELIX 1 1 SER A 46 THR A 56 1 11 HELIX 2 2 SER A 79 ASN A 90 1 12 HELIX 3 3 GLY A 100 LEU A 102 5 3 HELIX 4 4 SER A 117 ASP A 123 1 7 HELIX 5 5 SER A 141 SER A 153 1 13 HELIX 6 6 SER A 153 ASN A 163 1 11 HELIX 7 7 SER A 189 ASN A 207 1 19 HELIX 8 8 GLY A 218 GLU A 228 1 11 HELIX 9 9 THR A 241 LYS A 246 1 6 HELIX 10 10 SER A 272 SER A 281 1 10 HELIX 11 11 THR A 286 ILE A 290 5 5 SHEET 1 A 5 VAL A 75 GLN A 77 0 SHEET 2 A 5 GLU A 38 ARG A 42 1 N SER A 41 O VAL A 75 SHEET 3 A 5 ALA A 93 SER A 98 1 O ILE A 94 N ILE A 40 SHEET 4 A 5 THR A 249 VAL A 262 -1 O ALA A 259 N ILE A 97 SHEET 5 A 5 LYS A 107 ALA A 108 -1 N LYS A 107 O VAL A 262 SHEET 1 B 8 VAL A 75 GLN A 77 0 SHEET 2 B 8 GLU A 38 ARG A 42 1 N SER A 41 O VAL A 75 SHEET 3 B 8 ALA A 93 SER A 98 1 O ILE A 94 N ILE A 40 SHEET 4 B 8 THR A 249 VAL A 262 -1 O ALA A 259 N ILE A 97 SHEET 5 B 8 GLN A 129 TRP A 136 -1 N ARG A 130 O ASP A 256 SHEET 6 B 8 ILE A 233 VAL A 236 -1 O VAL A 236 N ASN A 133 SHEET 7 B 8 SER A 181 GLY A 188 1 N VAL A 187 O ILE A 233 SHEET 8 B 8 GLU A 209 SER A 216 1 O THR A 215 N VAL A 186 SHEET 1 C 2 LEU A 59 LYS A 61 0 SHEET 2 C 2 LYS A 66 ASP A 68 -1 O ILE A 67 N LYS A 60 SHEET 1 D 2 GLU A 110 ILE A 111 0 SHEET 2 D 2 GLN A 270 VAL A 271 1 O VAL A 271 N GLU A 110 LINK C LEU A 195 N MSE A 196 1555 1555 1.35 LINK C MSE A 196 N GLU A 197 1555 1555 1.36 LINK C GLY A 234 N MSE A 235 1555 1555 1.34 LINK C MSE A 235 N VAL A 236 1555 1555 1.33 LINK C SER A 272 N MSE A 273 1555 1555 1.35 LINK C MSE A 273 N ALA A 274 1555 1555 1.36 SITE 1 AC1 2 ASN A 44 LYS A 205 SITE 1 AC2 13 ARG A 42 SER A 46 GLY A 47 THR A 48 SITE 2 AC2 13 THR A 80 SER A 98 THR A 190 SER A 191 SITE 3 AC2 13 HOH A 414 HOH A 429 HOH A 458 HOH A 500 SITE 4 AC2 13 HOH A 506 CRYST1 72.743 61.624 67.227 90.00 120.30 90.00 C 1 2 1 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 0.013747 0.000000 0.008033 0.00000 SCALE2 0.000000 0.016227 0.000000 0.00000 SCALE3 0.000000 0.000000 0.017228 0.00000