HEADER PROTEIN BINDING 09-MAY-23 8ST5 TITLE STREPTOCOCCUS GORDONII STR. CHALLIS HSA BOUND TO NEU5AC COMPND MOL_ID: 1; COMPND 2 MOLECULE: STREPTOCOCCAL HEMAGGLUTININ; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: HS ANTIGEN,SIALIC ACID-BINDING ADHESIN; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOCOCCUS; SOURCE 3 ORGANISM_TAXID: 1301; SOURCE 4 STRAIN: CHALLIS; SOURCE 5 GENE: HSA, SGO_0966; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS BACTERIAL, ADHESIN, GLYCAN BINDING, PROTEIN BINDING EXPDTA X-RAY DIFFRACTION AUTHOR K.M.A.MORRISON,T.M.IVERSON REVDAT 1 15-MAY-24 8ST5 0 JRNL AUTH K.M.A.MORRISON,T.M.IVERSON JRNL TITL HSA SIGLEC +UNIQUE DOMAINS BOUND TO NEU5AC ALPHA2, 3 GAL JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.45 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.20.1_4487 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 : GEOSTD + MONOMER LIBRARY + CDL V1.2 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.45 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 39.39 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.370 REMARK 3 COMPLETENESS FOR RANGE (%) : 90.0 REMARK 3 NUMBER OF REFLECTIONS : 33040 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.167 REMARK 3 R VALUE (WORKING SET) : 0.165 REMARK 3 FREE R VALUE : 0.199 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.010 REMARK 3 FREE R VALUE TEST SET COUNT : 1655 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 39.3900 - 3.3200 1.00 3074 163 0.1644 0.1705 REMARK 3 2 3.3200 - 2.6300 1.00 2954 156 0.1708 0.2025 REMARK 3 3 2.6300 - 2.3000 1.00 2910 152 0.1602 0.1919 REMARK 3 4 2.3000 - 2.0900 1.00 2915 153 0.1468 0.1987 REMARK 3 5 2.0900 - 1.9400 1.00 2880 154 0.1535 0.2204 REMARK 3 6 1.9400 - 1.8200 0.99 2892 150 0.1553 0.2015 REMARK 3 7 1.8200 - 1.7300 0.99 2827 150 0.1559 0.2009 REMARK 3 8 1.7300 - 1.6600 0.98 2813 152 0.1732 0.2630 REMARK 3 9 1.6600 - 1.5900 0.96 2755 136 0.2008 0.2621 REMARK 3 10 1.5900 - 1.5400 0.79 2276 113 0.1985 0.2562 REMARK 3 11 1.5400 - 1.4900 0.62 1754 101 0.2111 0.2478 REMARK 3 12 1.4900 - 1.4500 0.47 1335 75 0.2288 0.3083 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 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) : 0.143 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 24.574 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 17.19 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 25.96 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 : 0.009 1680 REMARK 3 ANGLE : 1.086 2305 REMARK 3 CHIRALITY : 0.091 265 REMARK 3 PLANARITY : 0.013 308 REMARK 3 DIHEDRAL : 13.132 624 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 8ST5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-MAY-23. REMARK 100 THE DEPOSITION ID IS D_1000274127. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-JUN-17 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL9-2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9795 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 1.20_4459 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 33040 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.450 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.4 REMARK 200 DATA REDUNDANCY : 11.30 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 37.9700 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.45 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.48 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 (%): 35.60 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.91 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1 UL PROTEIN (21.6 MG/ML IN 20 MM TRIS REMARK 280 -HCL, PH 7.2) AND 2 UL RESERVOIR SOLUTION OVER 50 UL OF REMARK 280 RESERVOIR SOLUTION (0.1 M SUCCINATE/PHOSPHATE/GLYCINE PH 10.0 REMARK 280 AND 25% PEG 3350). FULLY FORMED CRYSTALS WERE SOAKED IN REMARK 280 RESERVOIR SOLUTION SUPPLE-MENTED WITH 5 MM NEU5GC ALPHA2,3GALOME, REMARK 280 VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 296K 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 23.03350 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.97600 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 28.84750 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.97600 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 23.03350 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 28.84750 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, K 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 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 LEU A 220 REMARK 465 ASN A 221 REMARK 465 THR A 222 REMARK 465 ASN A 223 REMARK 465 GLN A 224 REMARK 465 SER A 225 REMARK 465 VAL A 226 REMARK 465 SER A 227 REMARK 465 ALA A 228 REMARK 465 ARG A 229 REMARK 465 ASN A 230 REMARK 465 GLN A 231 REMARK 465 ASN A 232 REMARK 465 ALA A 233 REMARK 465 ARG A 234 REMARK 465 VAL A 235 REMARK 465 ARG A 236 REMARK 465 THR A 237 REMARK 465 ARG A 238 REMARK 465 ARG A 239 REMARK 465 ALA A 240 REMARK 465 VAL A 241 REMARK 465 ALA A 242 REMARK 465 ALA A 243 REMARK 465 ASP A 244 REMARK 465 ILE A 449 REMARK 465 SER A 450 REMARK 465 LYS A 451 REMARK 465 SER A 452 REMARK 465 ASN A 453 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 THR A 246 OG1 CG2 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 H SER A 383 O HOH A 601 1.22 REMARK 500 HD21 ASN A 359 O HOH A 602 1.47 REMARK 500 O HOH A 748 O HOH A 770 1.73 REMARK 500 O HOH A 759 O HOH A 805 1.83 REMARK 500 O HOH A 771 O HOH A 796 1.95 REMARK 500 N SER A 382 O HOH A 601 1.95 REMARK 500 O HOH A 713 O HOH A 850 1.97 REMARK 500 N SER A 383 O HOH A 601 2.01 REMARK 500 O HOH A 607 O HOH A 834 2.07 REMARK 500 ND2 ASN A 359 O HOH A 602 2.09 REMARK 500 O HOH A 694 O HOH A 856 2.11 REMARK 500 OD2 ASP A 245 O HOH A 603 2.11 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 HZ3 LYS A 252 OE2 GLU A 399 4555 1.59 REMARK 500 REMARK 500 REMARK: NULL 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 253 -127.00 -112.57 REMARK 500 ASN A 316 79.38 -152.20 REMARK 500 LEU A 363 -122.61 -101.57 REMARK 500 ASN A 392 80.51 -155.84 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 ARG A 340 0.09 SIDE CHAIN 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 NA A 501 NA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASN A 374 O REMARK 620 2 TYR A 377 O 81.5 REMARK 620 3 ASP A 436 OD1 108.9 154.8 REMARK 620 4 ASP A 436 OD2 94.7 105.6 51.8 REMARK 620 5 HOH A 808 O 165.5 92.6 82.0 99.7 REMARK 620 6 HOH A 812 O 92.0 112.4 90.7 142.0 77.9 REMARK 620 N 1 2 3 4 5 DBREF 8ST5 A 220 453 UNP A8AWU7 HSA_STRGC 220 453 SEQADV 8ST5 ASP A 244 UNP A8AWU7 ASN 244 CONFLICT SEQADV 8ST5 GLU A 381 UNP A8AWU7 ASP 381 CONFLICT SEQADV 8ST5 SER A 382 UNP A8AWU7 PRO 382 CONFLICT SEQRES 1 A 234 LEU ASN THR ASN GLN SER VAL SER ALA ARG ASN GLN ASN SEQRES 2 A 234 ALA ARG VAL ARG THR ARG ARG ALA VAL ALA ALA ASP ASP SEQRES 3 A 234 THR GLU ALA PRO GLN VAL LYS SER GLY ASP TYR VAL VAL SEQRES 4 A 234 TYR ARG GLY GLU SER PHE GLU TYR TYR ALA GLU ILE THR SEQRES 5 A 234 ASP ASN SER GLY GLN VAL ASN ARG VAL VAL ILE ARG ASN SEQRES 6 A 234 VAL GLU GLY GLY ALA ASN SER THR TYR LEU SER PRO ASN SEQRES 7 A 234 TRP VAL LYS TYR SER THR GLU ASN LEU GLY ARG PRO GLY SEQRES 8 A 234 ASN ALA THR VAL GLN ASN PRO LEU ARG THR ARG ILE PHE SEQRES 9 A 234 GLY GLU VAL PRO LEU ASN GLU ILE VAL ASN GLU LYS SER SEQRES 10 A 234 TYR TYR THR ARG TYR ILE VAL ALA TRP ASP PRO SER GLY SEQRES 11 A 234 ASN ALA THR GLN MET VAL ASP ASN ALA ASN ARG ASN GLY SEQRES 12 A 234 LEU GLU ARG PHE VAL LEU THR VAL LYS SER GLN ASN GLU SEQRES 13 A 234 LYS TYR ASP PRO ALA GLU SER SER VAL THR TYR VAL ASN SEQRES 14 A 234 ASN LEU SER ASN LEU SER THR SER GLU ARG GLU ALA VAL SEQRES 15 A 234 ALA ALA ALA VAL ARG ALA ALA ASN PRO ASN ILE PRO PRO SEQRES 16 A 234 THR ALA LYS ILE THR VAL SER GLN ASN GLY THR VAL THR SEQRES 17 A 234 ILE THR TYR PRO ASP LYS SER THR ASP THR ILE PRO ALA SEQRES 18 A 234 ASN ARG VAL VAL LYS ASP LEU GLN ILE SER LYS SER ASN HET GAL K 1 12 HET SIA K 2 20 HET NA A 501 1 HETNAM GAL BETA-D-GALACTOPYRANOSE HETNAM SIA N-ACETYL-ALPHA-NEURAMINIC ACID HETNAM NA SODIUM ION HETSYN GAL BETA-D-GALACTOSE; D-GALACTOSE; GALACTOSE HETSYN SIA N-ACETYLNEURAMINIC ACID; SIALIC ACID; ALPHA-SIALIC HETSYN 2 SIA ACID; O-SIALIC ACID FORMUL 2 GAL C6 H12 O6 FORMUL 2 SIA C11 H19 N O9 FORMUL 3 NA NA 1+ FORMUL 4 HOH *276(H2 O) HELIX 1 AA1 ASN A 357 ASN A 361 5 5 HELIX 2 AA2 SER A 372 TYR A 377 5 6 HELIX 3 AA3 SER A 394 ALA A 408 1 15 HELIX 4 AA4 PRO A 439 ARG A 442 5 4 SHEET 1 AA1 4 GLN A 250 LYS A 252 0 SHEET 2 AA1 4 SER A 263 THR A 271 -1 O THR A 271 N GLN A 250 SHEET 3 AA1 4 LEU A 318 GLU A 325 -1 O ILE A 322 N TYR A 266 SHEET 4 AA1 4 LYS A 300 THR A 303 -1 N LYS A 300 O PHE A 323 SHEET 1 AA2 4 ASP A 255 TYR A 259 0 SHEET 2 AA2 4 ARG A 365 LYS A 371 1 O THR A 369 N VAL A 258 SHEET 3 AA2 4 TYR A 337 TRP A 345 -1 N TYR A 338 O LEU A 368 SHEET 4 AA2 4 ARG A 279 ARG A 283 -1 N VAL A 281 O VAL A 343 SHEET 1 AA3 2 THR A 385 VAL A 387 0 SHEET 2 AA3 2 VAL A 444 ASP A 446 1 O LYS A 445 N VAL A 387 SHEET 1 AA4 3 LYS A 417 VAL A 420 0 SHEET 2 AA4 3 VAL A 426 THR A 429 -1 O THR A 427 N THR A 419 SHEET 3 AA4 3 THR A 435 ILE A 438 -1 O ASP A 436 N ILE A 428 LINK O3 GAL K 1 C2 SIA K 2 1555 1555 1.39 LINK O ASN A 374 NA NA A 501 1555 1555 2.38 LINK O TYR A 377 NA NA A 501 1555 1555 2.23 LINK OD1 ASP A 436 NA NA A 501 1555 1555 2.63 LINK OD2 ASP A 436 NA NA A 501 1555 1555 2.38 LINK NA NA A 501 O HOH A 808 1555 1555 2.33 LINK NA NA A 501 O HOH A 812 1555 1555 2.56 CISPEP 1 SER A 295 PRO A 296 0 -9.42 CRYST1 46.067 57.695 75.952 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 0.021708 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017333 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013166 0.00000