HEADER HYDROLASE 12-SEP-23 8U5O TITLE THE STRUCTURE OF THE CATALYTIC DOMAIN OF NANI SIALDASE IN COMPLEX WITH TITLE 2 NEU5GC COMPND MOL_ID: 1; COMPND 2 MOLECULE: EXO-ALPHA-SIALIDASE; COMPND 3 CHAIN: A; COMPND 4 EC: 3.2.1.18; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CLOSTRIDIUM PERFRINGENS ATCC 13124; SOURCE 3 ORGANISM_TAXID: 195103; SOURCE 4 GENE: NANI, CYK96_07055, NCTC10578_00772; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008 KEYWDS SIALIDASE, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR B.J.MEDLEY,K.E.LOW,J.M.GARBER,T.E.GRAY,L.LIU,L.KLASSEN,O.B.FORDWOUR, AUTHOR 2 G.D.INGLIS,G.J.BOONS,W.F.ZANDBERG,W.D.ABBOTT,A.B.BORASTON REVDAT 1 04-SEP-24 8U5O 0 JRNL AUTH B.J.MEDLEY,K.E.LOW,J.M.GARBER,T.E.GRAY,L.LIU,O.B.FORDWOUR, JRNL AUTH 2 G.D.INGLIS,W.F.ZANDBERG,D.W.ABBOTT,A.B.BORASTON JRNL TITL A TERMINAL CASE OF GLYCAN CATABOLISM STRUCTURAL AND JRNL TITL 2 ENZYMATIC CHARACTERIZATION OF THE SIALIDASES OF CLOSTRIDIUM JRNL TITL 3 PERFRINGENS JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.19.2_4158 REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.88 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.2 REMARK 3 NUMBER OF REFLECTIONS : 77240 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.155 REMARK 3 R VALUE (WORKING SET) : 0.154 REMARK 3 FREE R VALUE : 0.178 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.110 REMARK 3 FREE R VALUE TEST SET COUNT : 3948 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 19.8800 - 4.5400 1.00 2872 150 0.1483 0.1247 REMARK 3 2 4.5400 - 3.6100 1.00 2715 162 0.1320 0.1574 REMARK 3 3 3.6100 - 3.1500 1.00 2707 173 0.1474 0.1594 REMARK 3 4 3.1500 - 2.8700 0.99 2669 143 0.1608 0.1834 REMARK 3 5 2.8700 - 2.6600 0.99 2652 160 0.1654 0.1952 REMARK 3 6 2.6600 - 2.5100 1.00 2680 129 0.1657 0.1751 REMARK 3 7 2.5100 - 2.3800 1.00 2634 178 0.1562 0.1967 REMARK 3 8 2.3800 - 2.2800 1.00 2653 164 0.1497 0.1907 REMARK 3 9 2.2800 - 2.1900 1.00 2680 122 0.1434 0.1904 REMARK 3 10 2.1900 - 2.1100 1.00 2682 120 0.1506 0.1599 REMARK 3 11 2.1100 - 2.0500 1.00 2681 133 0.1538 0.1924 REMARK 3 12 2.0500 - 1.9900 1.00 2647 148 0.1562 0.1845 REMARK 3 13 1.9900 - 1.9400 1.00 2626 144 0.1608 0.2011 REMARK 3 14 1.9400 - 1.8900 1.00 2660 142 0.1566 0.2090 REMARK 3 15 1.8900 - 1.8500 0.99 2630 136 0.1682 0.1823 REMARK 3 16 1.8500 - 1.8100 0.99 2583 132 0.1595 0.1906 REMARK 3 17 1.8100 - 1.7700 0.99 2637 144 0.1566 0.2006 REMARK 3 18 1.7700 - 1.7400 0.99 2607 138 0.1635 0.2097 REMARK 3 19 1.7400 - 1.7100 0.98 2606 123 0.1717 0.2410 REMARK 3 20 1.7100 - 1.6800 0.99 2608 152 0.1587 0.2326 REMARK 3 21 1.6800 - 1.6500 0.99 2650 112 0.1572 0.1620 REMARK 3 22 1.6500 - 1.6300 0.98 2615 133 0.1570 0.2118 REMARK 3 23 1.6300 - 1.6000 0.98 2566 156 0.1592 0.1890 REMARK 3 24 1.6000 - 1.5800 0.98 2576 127 0.1561 0.1872 REMARK 3 25 1.5800 - 1.5600 0.96 2536 134 0.1605 0.1943 REMARK 3 26 1.5600 - 1.5400 0.97 2532 130 0.1664 0.2009 REMARK 3 27 1.5400 - 1.5200 0.94 2497 128 0.1698 0.2044 REMARK 3 28 1.5200 - 1.5000 0.80 2091 135 0.1914 0.2081 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.130 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 16.990 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.010 3677 REMARK 3 ANGLE : 1.158 4986 REMARK 3 CHIRALITY : 0.106 538 REMARK 3 PLANARITY : 0.010 659 REMARK 3 DIHEDRAL : 7.935 510 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 8U5O COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-SEP-23. REMARK 100 THE DEPOSITION ID IS D_1000277236. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-JAN-22 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU MICROMAX-002 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.542 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 200K REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 77611 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.3 REMARK 200 DATA REDUNDANCY : 4.000 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 23.5000 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) : 20.00 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 49.24 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.42 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20% PEG 3350, 0.2M KNO3, PH 7.0, 15MM REMARK 280 NEU5GC, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 291K 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 34.63500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 48.56850 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 36.15250 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 48.56850 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 34.63500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 36.15250 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 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 A1274 CD CE NZ REMARK 470 GLU A1336 CG CD OE1 OE2 REMARK 470 LYS A1395 CE NZ REMARK 470 ARG A1408 NH1 NH2 REMARK 470 LYS A1459 CE NZ REMARK 470 GLU A1489 CG CD OE1 OE2 REMARK 470 LYS A1528 NZ REMARK 470 GLU A1632 CG CD OE1 OE2 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 ILE A1267 74.78 79.09 REMARK 500 ASN A1294 49.79 -91.25 REMARK 500 ASN A1295 -178.74 -174.40 REMARK 500 ASP A1328 88.41 77.42 REMARK 500 ASP A1328 88.41 69.90 REMARK 500 LYS A1350 -4.68 88.80 REMARK 500 ASP A1414 -158.88 -172.40 REMARK 500 LYS A1459 -71.16 -93.28 REMARK 500 THR A1538 -122.82 -124.53 REMARK 500 TYR A1587 65.52 78.57 REMARK 500 ALA A1654 -111.43 -122.76 REMARK 500 SER A1675 25.44 -157.08 REMARK 500 GLU A1676 -88.86 -119.71 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A1702 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A1296 OD1 REMARK 620 2 ASP A1298 OD1 104.6 REMARK 620 3 ASP A1319 OD1 170.8 80.7 REMARK 620 4 TYR A1320 O 100.1 132.2 81.0 REMARK 620 5 HOH A1843 O 86.8 76.5 87.3 145.7 REMARK 620 6 HOH A1915 O 83.0 70.0 106.0 73.3 141.0 REMARK 620 7 HOH A2030 O 81.8 148.4 89.8 74.9 72.9 141.5 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A1703 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A1515 O REMARK 620 2 TRP A1573 O 156.5 REMARK 620 3 HOH A1979 O 81.9 112.0 REMARK 620 4 HOH A1987 O 83.2 80.6 80.9 REMARK 620 5 HOH A2005 O 85.1 78.4 165.6 91.6 REMARK 620 6 HOH A2288 O 119.9 82.9 74.5 142.5 117.7 REMARK 620 N 1 2 3 4 5 DBREF1 8U5O A 1243 1690 UNP A0A2Z3TZA2_CLOPF DBREF2 8U5O A A0A2Z3TZA2 243 690 SEQADV 8U5O MET A 1242 UNP A0A2Z3TZA INITIATING METHIONINE SEQRES 1 A 449 MET VAL GLU GLY ALA VAL LYS THR GLU PRO VAL ASP LEU SEQRES 2 A 449 PHE HIS PRO GLY PHE LEU ASN SER SER ASN TYR ARG ILE SEQRES 3 A 449 PRO ALA LEU PHE LYS THR LYS GLU GLY THR LEU ILE ALA SEQRES 4 A 449 SER ILE ASP ALA ARG ARG HIS GLY GLY ALA ASP ALA PRO SEQRES 5 A 449 ASN ASN ASP ILE ASP THR ALA VAL ARG ARG SER GLU ASP SEQRES 6 A 449 GLY GLY LYS THR TRP ASP GLU GLY GLN ILE ILE MET ASP SEQRES 7 A 449 TYR PRO ASP LYS SER SER VAL ILE ASP THR THR LEU ILE SEQRES 8 A 449 GLU ASP ASP GLU THR GLY ARG ILE PHE LEU LEU VAL THR SEQRES 9 A 449 HIS PHE PRO SER LYS TYR GLY PHE TRP ASN ALA GLY LEU SEQRES 10 A 449 GLY SER GLY PHE LYS ASN ILE ASP GLY LYS GLU TYR LEU SEQRES 11 A 449 CYS LEU TYR ASP SER SER GLY LYS GLU PHE THR VAL ARG SEQRES 12 A 449 GLU ASN VAL VAL TYR ASP LYS ASP SER ASN LYS THR GLU SEQRES 13 A 449 TYR THR THR ASN ALA LEU GLY ASP LEU PHE ARG ASN GLY SEQRES 14 A 449 THR LYS ILE ASP ASN ILE ASN SER SER THR ALA PRO LEU SEQRES 15 A 449 LYS ALA LYS GLY THR SER TYR ILE ASN LEU VAL TYR SER SEQRES 16 A 449 ASP ASP ASP GLY LYS THR TRP SER GLU PRO GLN ASN ILE SEQRES 17 A 449 ASN PHE GLN VAL LYS LYS ASP TRP MET LYS PHE LEU GLY SEQRES 18 A 449 ILE ALA PRO GLY ARG GLY ILE GLN ILE LYS ASN GLY GLU SEQRES 19 A 449 HIS LYS GLY ARG ILE VAL VAL PRO VAL TYR TYR THR ASN SEQRES 20 A 449 GLU LYS GLY LYS GLN SER SER ALA VAL ILE TYR SER ASP SEQRES 21 A 449 ASP SER GLY LYS ASN TRP THR ILE GLY GLU SER PRO ASN SEQRES 22 A 449 ASP ASN ARG LYS LEU GLU ASN GLY LYS ILE ILE ASN SER SEQRES 23 A 449 LYS THR LEU SER ASP ASP ALA PRO GLN LEU THR GLU CYS SEQRES 24 A 449 GLN VAL VAL GLU MET PRO ASN GLY GLN LEU LYS LEU PHE SEQRES 25 A 449 MET ARG ASN LEU SER GLY TYR LEU ASN ILE ALA THR SER SEQRES 26 A 449 PHE ASP GLY GLY ALA THR TRP ASP GLU THR VAL GLU LYS SEQRES 27 A 449 ASP THR ASN VAL LEU GLU PRO TYR CYS GLN LEU SER VAL SEQRES 28 A 449 ILE ASN TYR SER GLN LYS VAL ASP GLY LYS ASP ALA VAL SEQRES 29 A 449 ILE PHE SER ASN PRO ASN ALA ARG SER ARG SER ASN GLY SEQRES 30 A 449 THR VAL ARG ILE GLY LEU ILE ASN GLN VAL GLY THR TYR SEQRES 31 A 449 GLU ASN GLY GLU PRO LYS TYR GLU PHE ASP TRP LYS TYR SEQRES 32 A 449 ASN LYS LEU VAL LYS PRO GLY TYR TYR ALA TYR SER CYS SEQRES 33 A 449 LEU THR GLU LEU SER ASN GLY ASN ILE GLY LEU LEU TYR SEQRES 34 A 449 GLU GLY THR PRO SER GLU GLU MET SER TYR ILE GLU MET SEQRES 35 A 449 ASN LEU LYS TYR LEU GLU SER HET NGC A1701 22 HET CA A1702 1 HET CA A1703 1 HET NO3 A1704 4 HET NO3 A1705 4 HET NO3 A1706 4 HET NO3 A1707 4 HET NO3 A1708 4 HET NO3 A1709 4 HET NO3 A1710 4 HETNAM NGC N-GLYCOLYL-ALPHA-NEURAMINIC ACID HETNAM CA CALCIUM ION HETNAM NO3 NITRATE ION HETSYN NGC N-GLYCOLYLNEURAMINIC ACID; SIALIC ACID; 3,5-DIDEOXY-5- HETSYN 2 NGC [(HYDROXYACETYL)AMINO]-D-GLYCERO-ALPHA-D-GALACTO-NON- HETSYN 3 NGC 2-ULOPYRANOSONIC ACID FORMUL 2 NGC C11 H19 N O10 FORMUL 3 CA 2(CA 2+) FORMUL 5 NO3 7(N O3 1-) FORMUL 12 HOH *606(H2 O) HELIX 1 AA1 GLY A 1258 SER A 1262 5 5 HELIX 2 AA2 ILE A 1449 LYS A 1454 1 6 HELIX 3 AA3 ASN A 1684 GLU A 1689 1 6 SHEET 1 AA1 4 VAL A1252 PHE A1255 0 SHEET 2 AA1 4 MET A1678 MET A1683 -1 O MET A1678 N PHE A1255 SHEET 3 AA1 4 ILE A1666 GLU A1671 -1 N ILE A1666 O MET A1683 SHEET 4 AA1 4 SER A1656 GLU A1660 -1 N THR A1659 O GLY A1667 SHEET 1 AA2 4 ASN A1264 LYS A1272 0 SHEET 2 AA2 4 LEU A1278 ARG A1285 -1 O ASP A1283 N ARG A1266 SHEET 3 AA2 4 ILE A1297 SER A1304 -1 O ASP A1298 N ALA A1284 SHEET 4 AA2 4 GLN A1315 MET A1318 -1 O ILE A1317 N THR A1299 SHEET 1 AA3 5 GLN A1447 ASN A1448 0 SHEET 2 AA3 5 TYR A1430 SER A1436 -1 N LEU A1433 O GLN A1447 SHEET 3 AA3 5 ARG A1339 PHE A1347 -1 N HIS A1346 O TYR A1430 SHEET 4 AA3 5 SER A1325 ASP A1334 -1 N ILE A1332 O PHE A1341 SHEET 5 AA3 5 GLY A1466 ARG A1467 1 O GLY A1466 N THR A1329 SHEET 1 AA4 7 PHE A1362 ILE A1365 0 SHEET 2 AA4 7 LYS A1368 TYR A1374 -1 O TYR A1370 N LYS A1363 SHEET 3 AA4 7 GLU A1380 ARG A1384 -1 O PHE A1381 N LEU A1373 SHEET 4 AA4 7 VAL A1387 TYR A1389 -1 O VAL A1387 N ARG A1384 SHEET 5 AA4 7 LYS A1395 THR A1400 -1 O THR A1396 N VAL A1388 SHEET 6 AA4 7 ASP A1405 ARG A1408 -1 O PHE A1407 N THR A1399 SHEET 7 AA4 7 THR A1411 ASN A1415 -1 O ILE A1413 N LEU A1406 SHEET 1 AA5 3 PHE A1362 ILE A1365 0 SHEET 2 AA5 3 LYS A1368 TYR A1374 -1 O TYR A1370 N LYS A1363 SHEET 3 AA5 3 LYS A1424 ALA A1425 -1 O LYS A1424 N TYR A1374 SHEET 1 AA6 3 LEU A1461 ILE A1463 0 SHEET 2 AA6 3 ILE A1480 THR A1487 -1 O TYR A1485 N GLY A1462 SHEET 3 AA6 3 ILE A1469 GLN A1470 -1 N ILE A1469 O VAL A1481 SHEET 1 AA7 4 LEU A1461 ILE A1463 0 SHEET 2 AA7 4 ILE A1480 THR A1487 -1 O TYR A1485 N GLY A1462 SHEET 3 AA7 4 GLN A1493 SER A1500 -1 O ILE A1498 N VAL A1482 SHEET 4 AA7 4 THR A1508 ILE A1509 -1 O THR A1508 N TYR A1499 SHEET 1 AA8 2 ARG A1517 LYS A1518 0 SHEET 2 AA8 2 ILE A1524 ILE A1525 -1 O ILE A1525 N ARG A1517 SHEET 1 AA9 4 LEU A1537 GLU A1544 0 SHEET 2 AA9 4 LEU A1550 ASN A1556 -1 O ARG A1555 N GLU A1539 SHEET 3 AA9 4 TYR A1560 SER A1566 -1 O ASN A1562 N MET A1554 SHEET 4 AA9 4 GLU A1578 LEU A1584 -1 O GLU A1578 N ILE A1563 SHEET 1 AB1 4 SER A1591 ASN A1594 0 SHEET 2 AB1 4 ALA A1604 PRO A1610 -1 O SER A1608 N SER A1591 SHEET 3 AB1 4 SER A1616 THR A1630 -1 O ARG A1621 N PHE A1607 SHEET 4 AB1 4 PRO A1636 TYR A1652 -1 O LYS A1637 N VAL A1628 LINK OD1 ASP A1296 CA CA A1702 1555 1555 2.34 LINK OD1 ASP A1298 CA CA A1702 1555 1555 2.38 LINK OD1 ASP A1319 CA CA A1702 1555 1555 2.34 LINK O TYR A1320 CA CA A1702 1555 1555 2.39 LINK O ASP A1515 CA CA A1703 1555 1555 2.59 LINK O TRP A1573 CA CA A1703 1555 1555 2.59 LINK CA CA A1702 O HOH A1843 1555 1555 2.49 LINK CA CA A1702 O HOH A1915 1555 1555 2.51 LINK CA CA A1702 O HOH A2030 1555 1555 2.45 LINK CA CA A1703 O HOH A1979 1555 1555 2.71 LINK CA CA A1703 O HOH A1987 1555 1555 2.78 LINK CA CA A1703 O HOH A2005 1555 1555 2.63 LINK CA CA A1703 O HOH A2288 1555 1555 2.77 CISPEP 1 ALA A 1292 PRO A 1293 0 8.31 CRYST1 69.270 72.305 97.137 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 0.014436 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013830 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010295 0.00000