HEADER RNA BINDING PROTEIN 23-NOV-11 3US5 TITLE CRYSTAL STRUCTURE OF A RNA-BINDING DOMAIN OF A POLY-U BINDING SPLICING TITLE 2 FACTOR 60KDA (PUF60) FROM HOMO SAPIENS AT 1.38 A RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: POLY(U)-BINDING-SPLICING FACTOR PUF60; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: RRM 3 DOMAIN RESIDUES 443-559; COMPND 5 SYNONYM: 60 KDA POLY(U)-BINDING-SPLICING FACTOR, FUSE-BINDING COMPND 6 PROTEIN-INTERACTING REPRESSOR, FBP-INTERACTING REPRESSOR, RO-BINDING COMPND 7 PROTEIN 1, ROBP1, SIAH-BINDING PROTEIN 1, SIAH-BP1; COMPND 8 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: BC011265, FIR, PUF60, ROBPI, SIAHBP1; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: HK100; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: SPEEDET KEYWDS CANONICAL RBD, RRM, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL KEYWDS 2 GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-BIOLOGY, KEYWDS 3 PARTNERSHIP FOR T-CELL BIOLOGY, TCELL, RNA BINDING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR JOINT CENTER FOR STRUCTURAL GENOMICS (JCSG),PARTNERSHIP FOR T-CELL AUTHOR 2 BIOLOGY (TCELL) REVDAT 4 01-FEB-23 3US5 1 REMARK SEQADV LINK REVDAT 3 08-NOV-17 3US5 1 REMARK REVDAT 2 29-AUG-12 3US5 1 AUTHOR REVDAT 1 11-JAN-12 3US5 0 JRNL AUTH JOINT CENTER FOR STRUCTURAL GENOMICS (JCSG), JRNL AUTH 2 PARTNERSHIP FOR T-CELL BIOLOGY JRNL TITL CRYSTAL STRUCTURE OF A RNA-BINDING DOMAIN OF A POLY-U JRNL TITL 2 BINDING SPLICING FACTOR 60KDA (PUF60) FROM HOMO SAPIENS AT JRNL TITL 3 1.38 A RESOLUTION JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.38 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.5.0110 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD WITH PHASES REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.38 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 36.95 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.2 REMARK 3 NUMBER OF REFLECTIONS : 24119 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) : 0.144 REMARK 3 R VALUE (WORKING SET) : 0.143 REMARK 3 FREE R VALUE : 0.181 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1213 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) : 1.38 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.42 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1733 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 99.78 REMARK 3 BIN R VALUE (WORKING SET) : 0.2400 REMARK 3 BIN FREE R VALUE SET COUNT : 105 REMARK 3 BIN FREE R VALUE : 0.3060 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 923 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 171 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 13.37 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 18.11 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.06000 REMARK 3 B22 (A**2) : 0.44000 REMARK 3 B33 (A**2) : -0.51000 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): 0.060 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.057 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.034 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.870 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.973 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.965 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 956 ; 0.015 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): 644 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1293 ; 1.499 ; 1.947 REMARK 3 BOND ANGLES OTHERS (DEGREES): 1575 ; 0.932 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 125 ; 5.369 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 51 ;36.419 ;25.294 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 176 ;10.899 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 7 ; 8.791 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 144 ; 0.106 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1096 ; 0.006 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 190 ; 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): 595 ; 1.673 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 246 ; 0.620 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 958 ; 2.561 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 361 ; 3.915 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 331 ; 5.878 ; 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): 1600 ; 1.576 ; 3.000 REMARK 3 SPHERICITY; FREE ATOMS (A**2): 174 ;13.874 ; 5.000 REMARK 3 SPHERICITY; BONDED ATOMS (A**2): 1585 ; 6.948 ; 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 : BABINET MODEL WITH MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: 1. HYDROGENS HAVE BEEN ADDED IN THE REMARK 3 RIDING POSITIONS. 2. A MET-INHIBITION PROTOCOL WAS USED FOR REMARK 3 SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE REMARK 3 OCCUPANCY OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO REMARK 3 0.75 FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET REMARK 3 INCORPORATION. REMARK 4 REMARK 4 3US5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-DEC-11. REMARK 100 THE DEPOSITION ID IS D_1000069141. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-OCT-11 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 8.2.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9793 REMARK 200 MONOCHROMATOR : DOUBLE CRYSTAL SI(111) REMARK 200 OPTICS : KOHZU: DOUBLE CRYSTAL SI(111) REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA 3.3.20 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 24223 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.380 REMARK 200 RESOLUTION RANGE LOW (A) : 36.950 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.4 REMARK 200 DATA REDUNDANCY : 6.900 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.10200 REMARK 200 FOR THE DATA SET : 9.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.38 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.45 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 7.00 REMARK 200 R MERGE FOR SHELL (I) : 0.01100 REMARK 200 R SYM FOR SHELL (I) : 1.06400 REMARK 200 FOR SHELL : 0.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SAD REMARK 200 SOFTWARE USED: SOLVE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: REFLECTIONS IN RESOLUTION BINS 3.71-3.63, 2.28-2.22, AND REMARK 200 1.94-1.90 WERE EXCLUDED DURING DATA INTEGRATION BECAUSE OF ICE REMARK 200 RINGS. REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 44.42 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.21 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 2.40M AMMONIUM SULFATE, 0.1M TRIS PH REMARK 280 8.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 277K 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 21.71650 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 28.14900 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 24.48700 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 28.14900 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 21.71650 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 24.48700 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 300 REMARK: CRYSTAL PACKING ANALYSIS SUPPORTS THE ASSIGNMENT OF A REMARK 300 MONOMER AS A SIGNIFICANT OLIGOMERIZATION STATE. 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 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 458 CG CD CE NZ REMARK 470 LYS A 473 CG CD CE NZ REMARK 470 ASP A 477 CG OD1 OD2 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 600 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 422574 RELATED DB: TARGETDB REMARK 999 REMARK 999 SEQUENCE REMARK 999 THIS CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG REMARK 999 MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING REMARK 999 ONLY A GLYCINE (0) FOLLOWED BY RESIDUES 443-559 OF THE TARGET REMARK 999 SEQUENCE. THE SEQUENCE NUMBERING MATCHES ISOFORM 1 OF UNIPROT-KB REMARK 999 ENTRY Q9UHX1. DBREF 3US5 A 443 559 UNP Q9UHX1 PUF60_HUMAN 443 559 SEQADV 3US5 GLY A 0 UNP Q9UHX1 EXPRESSION TAG SEQRES 1 A 118 GLY SER GLY SER SER ALA ARG HIS MSE VAL MSE GLN LYS SEQRES 2 A 118 LEU LEU ARG LYS GLN GLU SER THR VAL MSE VAL LEU ARG SEQRES 3 A 118 ASN MSE VAL ASP PRO LYS ASP ILE ASP ASP ASP LEU GLU SEQRES 4 A 118 GLY GLU VAL THR GLU GLU CYS GLY LYS PHE GLY ALA VAL SEQRES 5 A 118 ASN ARG VAL ILE ILE TYR GLN GLU LYS GLN GLY GLU GLU SEQRES 6 A 118 GLU ASP ALA GLU ILE ILE VAL LYS ILE PHE VAL GLU PHE SEQRES 7 A 118 SER ILE ALA SER GLU THR HIS LYS ALA ILE GLN ALA LEU SEQRES 8 A 118 ASN GLY ARG TRP PHE ALA GLY ARG LYS VAL VAL ALA GLU SEQRES 9 A 118 VAL TYR ASP GLN GLU ARG PHE ASP ASN SER ASP LEU SER SEQRES 10 A 118 ALA MODRES 3US5 MSE A 450 MET SELENOMETHIONINE MODRES 3US5 MSE A 452 MET SELENOMETHIONINE MODRES 3US5 MSE A 464 MET SELENOMETHIONINE MODRES 3US5 MSE A 469 MET SELENOMETHIONINE HET MSE A 450 8 HET MSE A 452 8 HET MSE A 464 8 HET MSE A 469 8 HET CL A 600 1 HETNAM MSE SELENOMETHIONINE HETNAM CL CHLORIDE ION FORMUL 1 MSE 4(C5 H11 N O2 SE) FORMUL 2 CL CL 1- FORMUL 3 HOH *171(H2 O) HELIX 1 1 GLY A 444 HIS A 449 1 6 HELIX 2 2 MSE A 452 LEU A 456 5 5 HELIX 3 3 ASP A 478 GLY A 488 1 11 HELIX 4 4 ILE A 521 ASN A 533 1 13 HELIX 5 5 ASP A 548 ASN A 554 1 7 SHEET 1 A 4 VAL A 493 LYS A 502 0 SHEET 2 A 4 ILE A 511 PHE A 519 -1 O LYS A 514 N TYR A 499 SHEET 3 A 4 VAL A 463 ARG A 467 -1 N LEU A 466 O ILE A 515 SHEET 4 A 4 VAL A 543 TYR A 547 -1 O VAL A 543 N ARG A 467 SHEET 1 B 2 TRP A 536 PHE A 537 0 SHEET 2 B 2 ARG A 540 LYS A 541 -1 O ARG A 540 N PHE A 537 LINK C HIS A 449 N MSE A 450 1555 1555 1.33 LINK C MSE A 450 N VAL A 451 1555 1555 1.33 LINK C VAL A 451 N MSE A 452 1555 1555 1.34 LINK C MSE A 452 N GLN A 453 1555 1555 1.34 LINK C VAL A 463 N MSE A 464 1555 1555 1.33 LINK C MSE A 464 N VAL A 465 1555 1555 1.31 LINK C ASN A 468 N MSE A 469 1555 1555 1.32 LINK C MSE A 469 N VAL A 470 1555 1555 1.33 SITE 1 AC1 3 HIS A 526 GLY A 539 HOH A 686 CRYST1 43.433 48.974 56.298 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 0.023024 0.000000 0.000000 0.00000 SCALE2 0.000000 0.020419 0.000000 0.00000 SCALE3 0.000000 0.000000 0.017763 0.00000