HEADER TRANSPORT PROTEIN 16-NOV-09 2WYK TITLE SIAP IN COMPLEX WITH NEU5GC COMPND MOL_ID: 1; COMPND 2 MOLECULE: SIALIC ACID-BINDING PERIPLASMIC PROTEIN SIAP; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: N-ACETYLNEURAMINIC-BINDING PROTEIN, NEU5AC-BINDING PROTEIN, COMPND 5 EXTRACYTOPLASMIC SOLUTE RECEPTOR PROTEIN SIAP; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HAEMOPHILUS INFLUENZAE; SOURCE 3 ORGANISM_TAXID: 727; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3) PLYSS; SOURCE 7 EXPRESSION_SYSTEM_VECTOR: PET21B; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PAH16 KEYWDS TRANSPORT PROTEIN, SUGAR TRANSPORT, TRAP TRANSPORTER EXPDTA X-RAY DIFFRACTION AUTHOR M.FISCHER,R.E.HUBBARD REVDAT 6 20-DEC-23 2WYK 1 HETSYN REVDAT 5 29-JUL-20 2WYK 1 COMPND REMARK HETNAM SITE REVDAT 5 2 1 ATOM REVDAT 4 25-SEP-19 2WYK 1 JRNL REVDAT 3 06-MAR-19 2WYK 1 REMARK REVDAT 2 18-OCT-17 2WYK 1 COMPND HETNAM HETSYN ATOM REVDAT 1 26-JAN-11 2WYK 0 JRNL AUTH J.F.DARBY,A.P.HOPKINS,S.SHIMIZU,S.M.ROBERTS,J.A.BRANNIGAN, JRNL AUTH 2 J.P.TURKENBURG,G.H.THOMAS,R.E.HUBBARD,M.FISCHER JRNL TITL WATER NETWORKS CAN DETERMINE THE AFFINITY OF LIGAND BINDING JRNL TITL 2 TO PROTEINS. JRNL REF J.AM.CHEM.SOC. 2019 JRNL REFN ESSN 1520-5126 JRNL PMID 31518131 JRNL DOI 10.1021/JACS.9B06275 REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.5.0109 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) : 40.04 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 3 NUMBER OF REFLECTIONS : 47069 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) : 0.135 REMARK 3 R VALUE (WORKING SET) : 0.132 REMARK 3 FREE R VALUE : 0.179 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 2517 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) : 3294 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 94.92 REMARK 3 BIN R VALUE (WORKING SET) : 0.1960 REMARK 3 BIN FREE R VALUE SET COUNT : 179 REMARK 3 BIN FREE R VALUE : 0.2810 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2428 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 28 REMARK 3 SOLVENT ATOMS : 453 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 13.94 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -1.20000 REMARK 3 B22 (A**2) : -0.36000 REMARK 3 B33 (A**2) : 1.56000 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): 0.080 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.070 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.042 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.521 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.976 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.963 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2653 ; 0.017 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): 1782 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3605 ; 1.601 ; 1.976 REMARK 3 BOND ANGLES OTHERS (DEGREES): 4391 ; 0.991 ; 3.001 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 341 ; 5.644 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 124 ;37.579 ;26.129 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 479 ;12.518 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 5 ; 9.699 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 395 ; 0.106 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 3007 ; 0.009 ; 0.021 REMARK 3 GENERAL PLANES OTHERS (A): 504 ; 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): 1634 ; 1.669 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 650 ; 0.594 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2640 ; 2.403 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1019 ; 3.893 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 961 ; 5.380 ; 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): 4435 ; 1.514 ; 3.000 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 : 1.40 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. U VALUES REFINED INDIVIDUALLY. UNIDENTIFIED DENSITY REMARK 3 IN PROXIMITY TO N150. REMARK 4 REMARK 4 2WYK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 16-NOV-09. REMARK 100 THE DEPOSITION ID IS D_1290041740. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-MAY-09 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : DIAMOND REMARK 200 BEAMLINE : I02 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9796 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC CCD REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 49622 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 200 DATA REDUNDANCY : 8.000 REMARK 200 R MERGE (I) : 0.11000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 19.4000 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) : 1.53 REMARK 200 COMPLETENESS FOR SHELL (%) : 96.1 REMARK 200 DATA REDUNDANCY IN SHELL : 4.80 REMARK 200 R MERGE FOR SHELL (I) : 0.56000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.300 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: REFMAC REMARK 200 STARTING MODEL: PDB ENTRY 2V4C REMARK 200 REMARK 200 REMARK: NONE REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.20 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30 MG/ML SIAP (IN 20 MM HEPES, 10 MM REMARK 280 NACL, PH 8.0) AND EQUAL VOLUME OF RESERVOIR SOLUTION (100MM MES REMARK 280 PH 6.0, 28.5% PEG 6K, 3% W/V 1,5-DIAMINOPENTANE DIHYDROCHLORIDE), REMARK 280 TEMPERATURE 277K, PH 7 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 23.70350 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 43.66700 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.40000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 43.66700 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 23.70350 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.40000 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 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 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 GLU A 225 CB GLU A 225 CG -0.133 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A2036 DISTANCE = 6.19 ANGSTROMS REMARK 525 HOH A2044 DISTANCE = 5.85 ANGSTROMS REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2XA5 RELATED DB: PDB REMARK 900 STRUCTURE OF SUBSTRATE BINDING PROTEIN SIAP (A11N) IN COMPLEX WITH REMARK 900 NEU5AC REMARK 900 RELATED ID: 2CEY RELATED DB: PDB REMARK 900 APO STRUCTURE OF SIAP REMARK 900 RELATED ID: 2XWO RELATED DB: PDB REMARK 900 SIAP R147E MUTANT IN COMPLEX WITH SIALYLAMIDE REMARK 900 RELATED ID: 2XWV RELATED DB: PDB REMARK 900 SIAP COMPLEX REMARK 900 RELATED ID: 2XWI RELATED DB: PDB REMARK 900 SIAP R147K MUTANT IN COMPLEX WITH NEU5AC REMARK 900 RELATED ID: 2CEX RELATED DB: PDB REMARK 900 STRUCTURE OF A SIALIC ACID BINDING PROTEIN (SIAP) IN THE PRESENCE REMARK 900 OF THE SIALIC ACID ACID ANALOGUE NEU5AC2EN REMARK 900 RELATED ID: 2WYP RELATED DB: PDB REMARK 900 TO BE CONFIRMED REMARK 900 RELATED ID: 2V4C RELATED DB: PDB REMARK 900 STRUCTURE OF SIALIC ACID BINDING PROTEIN (SIAP) IN THE PRESENCE OF REMARK 900 KDN REMARK 900 RELATED ID: 2XXK RELATED DB: PDB REMARK 900 SIAP COMPLEX REMARK 900 RELATED ID: 2XWK RELATED DB: PDB REMARK 900 SIAP R147A MUTANT IN COMPLEX WITH NEU5AC REMARK 900 RELATED ID: 2WX9 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF THE SIALIC ACID BINDING PERIPLASMIC PROTEIN REMARK 900 SIAP DBREF 2WYK A 1 306 UNP P44542 SIAP_HAEIN 24 329 SEQADV 2WYK HIS A 307 UNP P44542 EXPRESSION TAG SEQADV 2WYK HIS A 308 UNP P44542 EXPRESSION TAG SEQRES 1 A 308 ALA ASP TYR ASP LEU LYS PHE GLY MET ASN ALA GLY THR SEQRES 2 A 308 SER SER ASN GLU TYR LYS ALA ALA GLU MET PHE ALA LYS SEQRES 3 A 308 GLU VAL LYS GLU LYS SER GLN GLY LYS ILE GLU ILE SER SEQRES 4 A 308 LEU TYR PRO SER SER GLN LEU GLY ASP ASP ARG ALA MET SEQRES 5 A 308 LEU LYS GLN LEU LYS ASP GLY SER LEU ASP PHE THR PHE SEQRES 6 A 308 ALA GLU SER ALA ARG PHE GLN LEU PHE TYR PRO GLU ALA SEQRES 7 A 308 ALA VAL PHE ALA LEU PRO TYR VAL ILE SER ASN TYR ASN SEQRES 8 A 308 VAL ALA GLN LYS ALA LEU PHE ASP THR GLU PHE GLY LYS SEQRES 9 A 308 ASP LEU ILE LYS LYS MET ASP LYS ASP LEU GLY VAL THR SEQRES 10 A 308 LEU LEU SER GLN ALA TYR ASN GLY THR ARG GLN THR THR SEQRES 11 A 308 SER ASN ARG ALA ILE ASN SER ILE ALA ASP MET LYS GLY SEQRES 12 A 308 LEU LYS LEU ARG VAL PRO ASN ALA ALA THR ASN LEU ALA SEQRES 13 A 308 TYR ALA LYS TYR VAL GLY ALA SER PRO THR PRO MET ALA SEQRES 14 A 308 PHE SER GLU VAL TYR LEU ALA LEU GLN THR ASN ALA VAL SEQRES 15 A 308 ASP GLY GLN GLU ASN PRO LEU ALA ALA VAL GLN ALA GLN SEQRES 16 A 308 LYS PHE TYR GLU VAL GLN LYS PHE LEU ALA MET THR ASN SEQRES 17 A 308 HIS ILE LEU ASN ASP GLN LEU TYR LEU VAL SER ASN GLU SEQRES 18 A 308 THR TYR LYS GLU LEU PRO GLU ASP LEU GLN LYS VAL VAL SEQRES 19 A 308 LYS ASP ALA ALA GLU ASN ALA ALA LYS TYR HIS THR LYS SEQRES 20 A 308 LEU PHE VAL ASP GLY GLU LYS ASP LEU VAL THR PHE PHE SEQRES 21 A 308 GLU LYS GLN GLY VAL LYS ILE THR HIS PRO ASP LEU VAL SEQRES 22 A 308 PRO PHE LYS GLU SER MET LYS PRO TYR TYR ALA GLU PHE SEQRES 23 A 308 VAL LYS GLN THR GLY GLN LYS GLY GLU SER ALA LEU LYS SEQRES 24 A 308 GLN ILE GLU ALA ILE ASN PRO HIS HIS HET NGE A1309 22 HET SCN A1310 3 HET SCN A1311 3 HETNAM NGE N-GLYCOLYL-BETA-NEURAMINIC ACID HETNAM SCN THIOCYANATE ION HETSYN NGE N-GLYCOLYLNEURAMINIC ACID; SIALIC ACID FORMUL 2 NGE C11 H19 N O10 FORMUL 3 SCN 2(C N S 1-) FORMUL 5 HOH *453(H2 O) HELIX 1 1 SER A 15 SER A 32 1 18 HELIX 2 2 ASP A 48 ASP A 58 1 11 HELIX 3 3 GLU A 67 PHE A 74 5 8 HELIX 4 4 TYR A 75 LEU A 83 5 9 HELIX 5 5 ASN A 89 ASP A 99 1 11 HELIX 6 6 THR A 100 GLY A 115 1 16 HELIX 7 7 SER A 137 LYS A 142 5 6 HELIX 8 8 ALA A 151 GLY A 162 1 12 HELIX 9 9 ALA A 169 SER A 171 5 3 HELIX 10 10 GLU A 172 THR A 179 1 8 HELIX 11 11 LEU A 189 GLN A 195 1 7 HELIX 12 12 LYS A 196 VAL A 200 5 5 HELIX 13 13 ASN A 220 LYS A 224 1 5 HELIX 14 14 PRO A 227 GLN A 263 1 37 HELIX 15 15 LEU A 272 MET A 279 1 8 HELIX 16 16 MET A 279 ALA A 303 1 25 SHEET 1 AA 7 ILE A 36 TYR A 41 0 SHEET 2 AA 7 TYR A 3 GLY A 8 1 O TYR A 3 N GLU A 37 SHEET 3 AA 7 PHE A 63 ALA A 66 1 O PHE A 63 N GLY A 8 SHEET 4 AA 7 LEU A 211 SER A 219 -1 O LEU A 215 N ALA A 66 SHEET 5 AA 7 VAL A 116 SER A 131 -1 O THR A 117 N VAL A 218 SHEET 6 AA 7 PHE A 203 ALA A 205 -1 O PHE A 203 N SER A 131 SHEET 7 AA 7 LYS A 266 THR A 268 1 O LYS A 266 N LEU A 204 SHEET 1 AB 6 ILE A 36 TYR A 41 0 SHEET 2 AB 6 TYR A 3 GLY A 8 1 O TYR A 3 N GLU A 37 SHEET 3 AB 6 PHE A 63 ALA A 66 1 O PHE A 63 N GLY A 8 SHEET 4 AB 6 LEU A 211 SER A 219 -1 O LEU A 215 N ALA A 66 SHEET 5 AB 6 VAL A 116 SER A 131 -1 O THR A 117 N VAL A 218 SHEET 6 AB 6 GLY A 184 PRO A 188 -1 O GLN A 185 N THR A 130 SHEET 1 AC 2 LYS A 145 VAL A 148 0 SHEET 2 AC 2 SER A 164 PRO A 167 1 O SER A 164 N LEU A 146 CRYST1 47.407 74.800 87.334 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 0.021094 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013369 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011450 0.00000