HEADER SUGAR BINDING PROTEIN 09-SEP-13 4MMP TITLE STRUCTURE OF SIALIC ACID BINDING PROTEIN FROM PASTURELLA MULTOCIDA COMPND MOL_ID: 1; COMPND 2 MOLECULE: SIALIC ACID BINDING PROTEIN; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: UNP RESIDUES 22-327; COMPND 5 SYNONYM: PERIPLASMIC SIALIC ACID BINDING PROTEIN, TRAP-TYPE TRANSPORT COMPND 6 SYSTEM PERIPLASMIC COMPONENT; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: PASTEURELLA MULTOCIDA SUBSP. GALLICIDA P1059; SOURCE 3 ORGANISM_TAXID: 1169409; SOURCE 4 GENE: SIAP, P1059_01877; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET28A KEYWDS SUGAR BINDING PROTEIN, SUGAR TRANSPORT, TRAP TRANSPORTER EXPDTA X-RAY DIFFRACTION AUTHOR S.RAMASWAMY,G.S.THANUJA REVDAT 4 20-SEP-23 4MMP 1 HETSYN REVDAT 3 29-JUL-20 4MMP 1 COMPND REMARK SEQADV HETNAM REVDAT 3 2 1 SITE REVDAT 2 24-SEP-14 4MMP 1 JRNL REVDAT 1 09-JUL-14 4MMP 0 JRNL AUTH T.GANGI SETTY,C.CHO,S.GOVINDAPPA,M.A.APICELLA,S.RAMASWAMY JRNL TITL BACTERIAL PERIPLASMIC SIALIC ACID-BINDING PROTEINS EXHIBIT A JRNL TITL 2 CONSERVED BINDING SITE. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 70 1801 2014 JRNL REFN ISSN 0907-4449 JRNL PMID 25004958 JRNL DOI 10.1107/S139900471400830X REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.W.JOHNSTON,N.P.COUSSENS,S.ALLEN,J.C.HOUTMAN,K.H.TURNER, REMARK 1 AUTH 2 A.ZALESKI,S.RAMASWAMY,B.W.GIBSON,M.A.APICELLA REMARK 1 TITL CHARACTERIZATION OF THE N-ACETYL-5-NEURAMINIC ACID-BINDING REMARK 1 TITL 2 SITE OF THE EXTRACYTOPLASMIC SOLUTE RECEPTOR (SIAP) OF REMARK 1 TITL 3 NONTYPEABLE HAEMOPHILUS INFLUENZAE STRAIN 2019. REMARK 1 REF J.BIOL.CHEM. V. 283 855 2008 REMARK 1 REFN ISSN 0021-9258 REMARK 1 PMID 17947229 REMARK 1 DOI 10.1074/JBC.M706603200 REMARK 2 REMARK 2 RESOLUTION. 1.57 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.6.0117 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) : 1.57 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 57.53 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.2 REMARK 3 NUMBER OF REFLECTIONS : 40254 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) : 0.164 REMARK 3 R VALUE (WORKING SET) : 0.162 REMARK 3 FREE R VALUE : 0.200 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2016 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) : 1.57 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.61 REMARK 3 REFLECTION IN BIN (WORKING SET) : 2521 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 94.12 REMARK 3 BIN R VALUE (WORKING SET) : 0.2660 REMARK 3 BIN FREE R VALUE SET COUNT : 122 REMARK 3 BIN FREE R VALUE : 0.3320 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2410 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 21 REMARK 3 SOLVENT ATOMS : 193 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 21.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 21.99 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.03000 REMARK 3 B22 (A**2) : -0.25000 REMARK 3 B33 (A**2) : 0.28000 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): 0.084 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.053 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.477 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.971 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): 2477 ; 0.023 ; 0.020 REMARK 3 BOND LENGTHS OTHERS (A): 1664 ; 0.001 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3353 ; 2.131 ; 1.990 REMARK 3 BOND ANGLES OTHERS (DEGREES): 4108 ; 1.089 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 307 ; 6.203 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 110 ;39.548 ;26.091 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 439 ;14.702 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 5 ; 7.256 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 380 ; 0.130 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2731 ; 0.012 ; 0.021 REMARK 3 GENERAL PLANES OTHERS (A): 459 ; 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): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL 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 U VALUES : REFINED INDIVIDUALLY REMARK 4 REMARK 4 4MMP COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-SEP-13. REMARK 100 THE DEPOSITION ID IS D_1000082103. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 21-FEB-12 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 17-ID REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.00 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS 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 : SCALA 3.3.16 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 40313 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.570 REMARK 200 RESOLUTION RANGE LOW (A) : 85.519 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.4 REMARK 200 DATA REDUNDANCY : 6.200 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.08600 REMARK 200 FOR THE DATA SET : 13.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.57 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.65 REMARK 200 COMPLETENESS FOR SHELL (%) : 97.1 REMARK 200 DATA REDUNDANCY IN SHELL : 5.30 REMARK 200 R MERGE FOR SHELL (I) : 0.43900 REMARK 200 R SYM FOR SHELL (I) : 0.43900 REMARK 200 FOR SHELL : 1.700 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 3B50 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.65 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.07 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: DROPS WERE SETUP WITH EQUAL VOLUME OF REMARK 280 PROTEIN AND 1.6M SODIUM CITRATE TRIBASIC DIHYDRATE PH REMARK 280 6.5(CRYSTALLIZATION BUFFER) AND SUSPENDED OVER 100 L OF REMARK 280 CRYSTALLIZATION BUFFER, VAPOR DIFFUSION, HANGING DROP, REMARK 280 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 21.32150 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 42.75950 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 38.87900 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 42.75950 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 21.32150 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 38.87900 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 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O ILE A 75 O HOH A 691 2.16 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O LEU A 228 O HOH A 691 4455 2.13 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES 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,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) 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 ATM2 ATM3 REMARK 500 MET A 11 CG - SD - CE ANGL. DEV. = -18.3 DEGREES REMARK 500 ASP A 50 CB - CG - OD1 ANGL. DEV. = 5.5 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3B50 RELATED DB: PDB REMARK 900 STRUCTURE OF H.INFLEUNZAE SIALIC ACID BINDING PROTEIN REMARK 900 RELATED ID: 4MAG RELATED DB: PDB REMARK 900 STRUCTURE OF VIBRIO CHOLERA SIALIC ACID BINDING PROTEIN DBREF 4MMP A 3 308 UNP K0Y3H9 K0Y3H9_PASMD 22 327 SEQADV 4MMP GLY A 2 UNP K0Y3H9 EXPRESSION TAG SEQADV 4MMP LEU A 309 UNP K0Y3H9 EXPRESSION TAG SEQRES 1 A 308 GLY ALA ASP TYR ASP LEU LYS PHE GLY MET VAL ALA GLY SEQRES 2 A 308 PRO SER SER ASN GLU TYR LYS ALA VAL GLU PHE PHE ALA SEQRES 3 A 308 LYS GLU VAL LYS GLU LYS SER ASN GLY LYS ILE ASP VAL SEQRES 4 A 308 ALA ILE PHE PRO SER SER GLN LEU GLY ASP ASP ARG VAL SEQRES 5 A 308 MET ILE LYS GLN LEU LYS ASP GLY ALA LEU ASP PHE THR SEQRES 6 A 308 LEU GLY GLU SER ALA ARG PHE GLN ILE TYR PHE PRO GLU SEQRES 7 A 308 ALA GLU VAL PHE ALA LEU PRO TYR MET ILE PRO ASN PHE SEQRES 8 A 308 GLU THR SER LYS LYS ALA LEU LEU ASP THR LYS PHE GLY SEQRES 9 A 308 GLN GLY LEU LEU LYS LYS ILE ASP LYS GLU LEU ASN VAL SEQRES 10 A 308 GLN VAL LEU SER VAL ALA TYR ASN GLY THR ARG GLN THR SEQRES 11 A 308 THR SER ASN ARG ALA ILE ASN SER ILE GLU ASP MET LYS SEQRES 12 A 308 GLY LEU LYS LEU ARG VAL PRO ASN ALA ALA THR ASN LEU SEQRES 13 A 308 ALA TYR ALA LYS TYR VAL GLY ALA ALA PRO THR PRO MET SEQRES 14 A 308 ALA PHE SER GLU VAL TYR LEU ALA LEU GLN THR ASN SER SEQRES 15 A 308 VAL ASP GLY GLN GLU ASN PRO LEU PRO THR ILE GLN ALA SEQRES 16 A 308 GLN LYS PHE TYR GLU VAL GLN LYS TYR LEU ALA LEU THR SEQRES 17 A 308 ASN HIS ILE LEU ASN ASP GLN LEU TYR LEU ILE SER ASN SEQRES 18 A 308 ASP THR LEU ALA ASP LEU PRO GLU ASP LEU GLN LYS VAL SEQRES 19 A 308 VAL LYS ASP ALA ALA ALA LYS ALA ALA GLU TYR HIS THR SEQRES 20 A 308 LYS LEU PHE VAL ASP GLY GLU ASN SER LEU VAL GLU PHE SEQRES 21 A 308 PHE LYS SER GLN GLY VAL THR VAL THR GLN PRO ASP LEU SEQRES 22 A 308 LYS PRO PHE LYS ALA ALA LEU THR PRO TYR TYR ASP GLU SEQRES 23 A 308 TYR LEU LYS LYS ASN GLY GLU VAL GLY LYS MET ALA ILE SEQRES 24 A 308 GLU GLU ILE SER ASN LEU ALA LYS LEU HET SLB A 401 21 HETNAM SLB N-ACETYL-BETA-NEURAMINIC ACID HETSYN SLB N-ACETYLNEURAMINIC ACID; SIALIC ACID; O-SIALIC ACID; 5- HETSYN 2 SLB N-ACETYL-BETA-D-NEURAMINIC ACID; BETA-SIALIC ACID FORMUL 2 SLB C11 H19 N O9 FORMUL 3 HOH *193(H2 O) HELIX 1 1 SER A 17 SER A 34 1 18 HELIX 2 2 ASP A 50 ASP A 60 1 11 HELIX 3 3 GLU A 69 TYR A 76 5 8 HELIX 4 4 PHE A 77 LEU A 85 5 9 HELIX 5 5 ASN A 91 ASP A 101 1 11 HELIX 6 6 THR A 102 ASN A 117 1 16 HELIX 7 7 SER A 139 LYS A 144 5 6 HELIX 8 8 ALA A 153 VAL A 163 1 11 HELIX 9 9 ALA A 171 SER A 173 5 3 HELIX 10 10 GLU A 174 THR A 181 1 8 HELIX 11 11 LEU A 191 GLN A 197 1 7 HELIX 12 12 LYS A 198 VAL A 202 5 5 HELIX 13 13 ASN A 222 LEU A 228 1 7 HELIX 14 14 PRO A 229 GLN A 265 1 37 HELIX 15 15 LEU A 274 LEU A 309 1 36 SHEET 1 A 6 ILE A 38 PHE A 43 0 SHEET 2 A 6 TYR A 5 GLY A 10 1 N LEU A 7 O ASP A 39 SHEET 3 A 6 PHE A 65 GLY A 68 1 O PHE A 65 N LYS A 8 SHEET 4 A 6 LEU A 213 SER A 221 -1 O LEU A 217 N GLY A 68 SHEET 5 A 6 VAL A 118 SER A 133 -1 N LEU A 121 O TYR A 218 SHEET 6 A 6 GLY A 186 PRO A 190 -1 O GLN A 187 N THR A 132 SHEET 1 B 7 ILE A 38 PHE A 43 0 SHEET 2 B 7 TYR A 5 GLY A 10 1 N LEU A 7 O ASP A 39 SHEET 3 B 7 PHE A 65 GLY A 68 1 O PHE A 65 N LYS A 8 SHEET 4 B 7 LEU A 213 SER A 221 -1 O LEU A 217 N GLY A 68 SHEET 5 B 7 VAL A 118 SER A 133 -1 N LEU A 121 O TYR A 218 SHEET 6 B 7 TYR A 205 ALA A 207 -1 O ALA A 207 N THR A 131 SHEET 7 B 7 THR A 268 THR A 270 1 O THR A 270 N LEU A 206 SHEET 1 C 2 LYS A 147 VAL A 150 0 SHEET 2 C 2 ALA A 166 PRO A 169 1 O THR A 168 N LEU A 148 CRYST1 42.643 77.758 85.519 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 0.023451 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012860 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011693 0.00000