HEADER SUGAR BINDING PROTEIN/IMMUNE SYSTEM 31-OCT-03 1URL TITLE N-TERMINAL DOMAIN OF SIALOADHESIN (MOUSE) IN COMPLEX WITH GLYCOPEPTIDE COMPND MOL_ID: 1; COMPND 2 MOLECULE: SIALOADHESIN; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: N-TERMINAL DOMAIN, RESIDUES 20-137; COMPND 5 SYNONYM: SIALIC ACID BINDING IG-LIKE LECTIN-1, SIGLEC-1; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: ALA-GLY-HIS-THR-TRP-GLY-HIA; COMPND 9 CHAIN: B; COMPND 10 ENGINEERED: YES; COMPND 11 OTHER_DETAILS: HIA IS A MODIFIED HISTIDINE, O-SIALIC ACID BOUND ON COMPND 12 THR B 4 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MUS MUSCULUS; SOURCE 3 ORGANISM_COMMON: MOUSE; SOURCE 4 ORGANISM_TAXID: 10090; SOURCE 5 EXPRESSION_SYSTEM: CRICETULUS GRISEUS; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 10029; SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PEE14; SOURCE 9 MOL_ID: 2; SOURCE 10 SYNTHETIC: YES; SOURCE 11 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 12 ORGANISM_TAXID: 32630 KEYWDS LECTIN/IG-DOMAIN, SIALOADHESIN, OLIGOSACCHARIDE MIMICS, MOLECULAR KEYWDS 2 MIMICRY, CELL ADHESION, LECTIN, IMMUNOGLOBULIN DOMAIN, SUGAR BINDING KEYWDS 3 PROTEIN IMMUNE SYSTEM COMPLEX, SUGAR BINDING PROTEIN, IMMUNE SYSTEM, KEYWDS 4 SUGAR BINDING PROTEIN-IMMUNE SYSTEM COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.T.BUKRINSKY,P.M.S.HILAIRE,M.MELDAL,P.R.CROCKER,A.HENRIKSEN REVDAT 6 13-DEC-23 1URL 1 HETSYN REVDAT 5 29-JUL-20 1URL 1 COMPND REMARK HETNAM LINK REVDAT 5 2 1 SITE REVDAT 4 17-JAN-18 1URL 1 SOURCE REMARK REVDAT 3 04-AUG-09 1URL 1 HEADER KEYWDS REMARK FORMUL REVDAT 2 24-FEB-09 1URL 1 VERSN REVDAT 1 20-OCT-04 1URL 0 JRNL AUTH J.T.BUKRINSKY,P.M.S.HILAIRE,M.MELDAL,P.R.CROCKER,A.HENRIKSEN JRNL TITL COMPLEX OF SIALOADHESIN WITH A GLYCOPEPTIDE LIGAND JRNL REF BIOCHIM.BIOPHYS.ACTA V.1702 173 2004 JRNL REFN ISSN 0006-3002 JRNL PMID 15488769 JRNL DOI 10.1016/J.BBAPAP.2004.08.015 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.P.MAY,R.C.ROBINSON,M.VINSON,P.R.CROCKER,E.Y.JONES REMARK 1 TITL CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF SIALOADHESIN REMARK 1 TITL 2 IN COMPLEX WITH 3' SIALYLLACTOSE AT 1.85 A RESOLUTION. REMARK 1 REF MOL.CELL V. 1 719 1998 REMARK 1 REFN ISSN 1097-2765 REMARK 1 PMID 9660955 REMARK 1 DOI 10.1016/S1097-2765(00)80071-4 REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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 : MLF REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 28.74 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 659043.580 REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 86.8 REMARK 3 NUMBER OF REFLECTIONS : 4168 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) : 0.225 REMARK 3 FREE R VALUE : 0.273 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.400 REMARK 3 FREE R VALUE TEST SET COUNT : 224 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.018 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) : 2.40 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.55 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 77.60 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 566 REMARK 3 BIN R VALUE (WORKING SET) : 0.3720 REMARK 3 BIN FREE R VALUE : 0.3940 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 6.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 36 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.066 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 966 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 20 REMARK 3 SOLVENT ATOMS : 18 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 44.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 49.20 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -10.17000 REMARK 3 B22 (A**2) : -6.77000 REMARK 3 B33 (A**2) : 16.93000 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 COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.34 REMARK 3 ESD FROM SIGMAA (A) : 0.48 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.43 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.58 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.70 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.820 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) : 2.000 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.620 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.830 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.990 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.37 REMARK 3 BSOL : 52.21 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_REP.PARAM REMARK 3 PARAMETER FILE 2 : CARBOHYDRATE.PARAM REMARK 3 PARAMETER FILE 3 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : CARBOHYDRATE.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: CYS A 17 MAKES A DISULPHIDE BOND WITH A REMARK 3 SYMMETRY RELATED MOLECULE REMARK 4 REMARK 4 1URL COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 31-OCT-03. REMARK 100 THE DEPOSITION ID IS D_1290013865. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-APR-02 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 5.60 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : MAX II REMARK 200 BEAMLINE : I711 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.192 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 4194 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : 28.700 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 87.7 REMARK 200 DATA REDUNDANCY : 3.800 REMARK 200 R MERGE (I) : 0.08100 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 7.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.52 REMARK 200 COMPLETENESS FOR SHELL (%) : 73.4 REMARK 200 DATA REDUNDANCY IN SHELL : 2.40 REMARK 200 R MERGE FOR SHELL (I) : 0.47300 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.600 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 1QFO REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.60 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.07 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30% PEG4000, 0.1 M NA-CITRATE, 0.2 M REMARK 280 AMSO4 PH 5.6, PH 5.60 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 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 21.11500 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 39.23000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 21.11500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 39.23000 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: THE ENTRY IS MARKED AS DIMERIC AS PEPTIDE REMARK 300 CHAIN B IS IN COMPLEX WITH PROTEIN CHAIN A FOR REMARK 300 THE HETERO-ASSEMBLY DESCRIBED BY REMARK 350. 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: PQS 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 A2006 LIES ON A SPECIAL POSITION. REMARK 400 REMARK 400 COMPOUND REMARK 400 MOL_ID 1 IS MACROPHAGE-RESTRICTED ADHESION MOLECULE THAT REMARK 400 MEDIATES SIALIC-ACID DEPENDENT BINDING TO LYMPHOCYTES REMARK 400 GRANULOCYTES, MONOCYTES, NATURAL KILLER CELLS, B-CELLS REMARK 400 AND CD8 T-CELLS. COULD ALSO PLAY A ROLE IN HEMOPOIESIS 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 ALA B 1 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 SER A 33 CB OG REMARK 470 ASN A 34 CB CG OD1 ND2 REMARK 470 HIS B 3 CB CG ND1 CD2 CE1 NE2 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 SER A 16 -149.58 -78.76 REMARK 500 VAL A 30 133.65 0.59 REMARK 500 SER A 33 -27.30 -143.32 REMARK 500 ILE A 36 107.33 46.69 REMARK 500 ARG A 48 81.04 35.88 REMARK 500 HIS A 53 102.21 -160.10 REMARK 500 MET A 71 66.32 -101.86 REMARK 500 ASP A 85 73.36 46.50 REMARK 500 SER A 103 32.68 -97.86 REMARK 500 HIS B 3 -137.64 118.52 REMARK 500 THR B 4 -80.15 27.95 REMARK 500 REMARK 500 REMARK: NULL REMARK 700 REMARK 700 SHEET REMARK 700 THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN REMARK 700 ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, REMARK 700 TWO SHEETS ARE DEFINED. REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1OD7 RELATED DB: PDB REMARK 900 N-TERMINAL OF SIALOADHESIN IN COMPLEX WITH ME-A-9-N-(NAPHTHYL-2- REMARK 900 CARBONYL)-AMINO-9- DEOXY-NEU5AC (NAP COMPOUND) REMARK 900 RELATED ID: 1OD9 RELATED DB: PDB REMARK 900 N-TERMINAL OF SIALOADHESIN IN COMPLEX WITH ME-A-9-N-BENZOYL-AMINO-9- REMARK 900 DEOXY-NEU5AC ( BENZ COMPOUND) REMARK 900 RELATED ID: 1ODA RELATED DB: PDB REMARK 900 N-TERMINAL OF SIALOADHESIN IN COMPLEX WITH ME-A-9-N-(BIPHENYL-4- REMARK 900 CARBONYL)-AMINO-9- DEOXY-NEU5AC (BIP COMPOUND) REMARK 900 RELATED ID: 1QFO RELATED DB: PDB REMARK 900 N-TERMINAL DOMAIN OF SIALOADHESIN (MOUSE) IN COMPLEX WITH 3' REMARK 900 SIALYLLACTOSE REMARK 900 RELATED ID: 1QFP RELATED DB: PDB REMARK 900 N-TERMINAL DOMAIN OF SIALOADHESIN (MOUSE) DBREF 1URL A 1 118 UNP Q62230 SN_MOUSE 20 137 DBREF 1URL B 1 7 PDB 1URL 1URL 1 7 SEQRES 1 A 118 THR TRP GLY VAL SER SER PRO LYS ASN VAL GLN GLY LEU SEQRES 2 A 118 SER GLY SER CYS LEU LEU ILE PRO CYS ILE PHE SER TYR SEQRES 3 A 118 PRO ALA ASP VAL PRO VAL SER ASN GLY ILE THR ALA ILE SEQRES 4 A 118 TRP TYR TYR ASP TYR SER GLY LYS ARG GLN VAL VAL ILE SEQRES 5 A 118 HIS SER GLY ASP PRO LYS LEU VAL ASP LYS ARG PHE ARG SEQRES 6 A 118 GLY ARG ALA GLU LEU MET GLY ASN MET ASP HIS LYS VAL SEQRES 7 A 118 CYS ASN LEU LEU LEU LYS ASP LEU LYS PRO GLU ASP SER SEQRES 8 A 118 GLY THR TYR ASN PHE ARG PHE GLU ILE SER ASP SER ASN SEQRES 9 A 118 ARG TRP LEU ASP VAL LYS GLY THR THR VAL THR VAL THR SEQRES 10 A 118 THR SEQRES 1 B 7 ALA GLY HIS THR TRP GLY HIA MODRES 1URL THR B 4 THR GLYCOSYLATION SITE MODRES 1URL HIA B 7 HIS L-HISTIDINE AMIDE HET HIA B 7 11 HET SIA B1004 20 HETNAM HIA L-HISTIDINE AMIDE HETNAM SIA N-ACETYL-ALPHA-NEURAMINIC ACID HETSYN HIA L-HISTIDINAMIDE HETSYN SIA N-ACETYLNEURAMINIC ACID; SIALIC ACID; ALPHA-SIALIC HETSYN 2 SIA ACID; O-SIALIC ACID FORMUL 2 HIA C6 H10 N4 O FORMUL 3 SIA C11 H19 N O9 FORMUL 4 HOH *18(H2 O) HELIX 1 1 ASP A 56 VAL A 60 5 5 HELIX 2 2 LYS A 87 SER A 91 5 5 SHEET 1 AA 2 GLY A 3 SER A 5 0 SHEET 2 AA 2 ILE A 23 SER A 25 -1 O ILE A 23 N SER A 5 SHEET 1 AB 5 ASN A 9 LEU A 13 0 SHEET 2 AB 5 THR A 112 THR A 117 1 O THR A 113 N VAL A 10 SHEET 3 AB 5 GLY A 92 SER A 101 -1 O GLY A 92 N VAL A 114 SHEET 4 AB 5 THR A 37 TYR A 42 -1 O THR A 37 N GLU A 99 SHEET 5 AB 5 GLN A 49 HIS A 53 -1 O GLN A 49 N TYR A 42 SHEET 1 AC 4 ASN A 9 LEU A 13 0 SHEET 2 AC 4 THR A 112 THR A 117 1 O THR A 113 N VAL A 10 SHEET 3 AC 4 GLY A 92 SER A 101 -1 O GLY A 92 N VAL A 114 SHEET 4 AC 4 ASN A 104 LEU A 107 -1 O ASN A 104 N ILE A 100 SHEET 1 AD 3 LEU A 18 ILE A 20 0 SHEET 2 AD 3 ASN A 80 LEU A 83 -1 O LEU A 81 N ILE A 20 SHEET 3 AD 3 ALA A 68 MET A 71 -1 O GLU A 69 N LEU A 82 SSBOND 1 CYS A 17 CYS A 17 1555 2555 2.15 SSBOND 2 CYS A 22 CYS A 79 1555 1555 2.03 LINK OG1 THR B 4 C2 SIA B1004 1555 1555 1.39 LINK C GLY B 6 N HIA B 7 1555 1555 1.33 CRYST1 42.230 78.460 34.220 90.00 90.00 90.00 P 21 21 2 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 0.023680 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012745 0.000000 0.00000 SCALE3 0.000000 0.000000 0.029223 0.00000