HEADER TRANSFERASE 04-MAR-19 6QVT TITLE CMP-SIALIC ACID BOUND STRUCTURE OF THE HUMAN WILD TYPE BETA- TITLE 2 GALACTOSIDE ALPHA-2,6-SIALYLTRANSFERASE 1 (ST6GAL1) COMPND MOL_ID: 1; COMPND 2 MOLECULE: BETA-GALACTOSIDE ALPHA-2,6-SIALYLTRANSFERASE 1; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: ALPHA 2,6-ST 1,B-CELL ANTIGEN CD75,CMP-N-ACETYLNEURAMINATE- COMPND 5 BETA-GALACTOSAMIDE-ALPHA-2,6-SIALYLTRANSFERASE 1,ST6GAL I,ST6GALI, COMPND 6 SIALYLTRANSFERASE 1; COMPND 7 EC: 2.4.99.1; COMPND 8 ENGINEERED: YES; COMPND 9 OTHER_DETAILS: COMPOUND DETAILS: RESIDUES 365-371 (CHAIN A) AND 132- COMPND 10 135, 366-371 (CHAIN B) DID NOT HAVE CLEAR ELECTRON DENSITY AND WERE COMPND 11 NOT TRACED SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: ST6GAL1, SIAT1; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008 KEYWDS SIALYLTRANSFERASE, BETA-GALACTOSIDE ALPHA-2, 6-SIALYLTRANSFERASE 1, KEYWDS 2 ST6GAL1, N-LINKED GLYCOSYLATION, CMP-SIA, SIALIC ACID, CYTIDINE-5'- KEYWDS 3 MONOPHOSPHO-N-ACETYLNEURAMINIC, CMP-NEU5AC, CMP-SIALIC ACID, KEYWDS 4 TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR D.HARRUS,T.GLUMOFF REVDAT 7 07-AUG-24 6QVT 1 REMARK REVDAT 6 24-JAN-24 6QVT 1 REMARK REVDAT 5 07-OCT-20 6QVT 1 JRNL REVDAT 4 30-SEP-20 6QVT 1 JRNL REVDAT 3 19-AUG-20 6QVT 1 REMARK REVDAT 2 17-JUN-20 6QVT 1 JRNL REVDAT 1 10-JUN-20 6QVT 0 JRNL AUTH D.HARRUS,A.HARDUIN-LEPERS,T.GLUMOFF JRNL TITL UNLIGANDED AND CMP-NEU5AC BOUND STRUCTURES OF HUMAN JRNL TITL 2 ALPHA-2,6-SIALYLTRANSFERASE ST6GAL I AT HIGH RESOLUTION. JRNL REF J.STRUCT.BIOL. V. 212 07628 2020 JRNL REFN ESSN 1095-8657 JRNL PMID 32971290 JRNL DOI 10.1016/J.JSB.2020.107628 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH D.HARRUS,A.HARDUIN-LEPERS,T.GLUMOFF REMARK 1 TITL UNLIGANDED AND CMP-NEU5AC BOUND STRUCTURES OF HUMAN REMARK 1 TITL 2 ALPHA-2,6-SIALYLTRANSFERASE ST6GAL I AT HIGH RESOLUTION REMARK 1 REF J.STRUCT.BIOL. 2020 REMARK 1 REFN ESSN 1095-8657 REMARK 1 DOI 10.1101/2020.06.07.138503 REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.11.1_2575 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) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 48.35 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.350 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.9 REMARK 3 NUMBER OF REFLECTIONS : 87173 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.183 REMARK 3 R VALUE (WORKING SET) : 0.182 REMARK 3 FREE R VALUE : 0.204 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 4361 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 48.3460 - 5.2801 0.98 2825 149 0.2073 0.2121 REMARK 3 2 5.2801 - 4.1917 0.99 2794 147 0.1652 0.1775 REMARK 3 3 4.1917 - 3.6621 0.99 2791 147 0.1605 0.1887 REMARK 3 4 3.6621 - 3.3273 0.99 2769 146 0.1611 0.1963 REMARK 3 5 3.3273 - 3.0889 0.99 2783 147 0.1728 0.1856 REMARK 3 6 3.0889 - 2.9068 0.99 2753 144 0.1718 0.2127 REMARK 3 7 2.9068 - 2.7612 0.99 2741 145 0.1732 0.1813 REMARK 3 8 2.7612 - 2.6410 0.99 2800 147 0.1651 0.1974 REMARK 3 9 2.6410 - 2.5394 0.99 2774 146 0.1733 0.1863 REMARK 3 10 2.5394 - 2.4518 1.00 2758 145 0.1865 0.2125 REMARK 3 11 2.4518 - 2.3751 1.00 2797 148 0.1783 0.1738 REMARK 3 12 2.3751 - 2.3072 0.99 2747 144 0.1852 0.2113 REMARK 3 13 2.3072 - 2.2465 0.99 2786 147 0.1802 0.2337 REMARK 3 14 2.2465 - 2.1917 1.00 2761 145 0.1818 0.1970 REMARK 3 15 2.1917 - 2.1418 0.99 2769 146 0.1803 0.1784 REMARK 3 16 2.1418 - 2.0963 0.99 2806 148 0.1792 0.2208 REMARK 3 17 2.0963 - 2.0543 0.99 2710 142 0.1858 0.1980 REMARK 3 18 2.0543 - 2.0156 0.99 2773 146 0.1807 0.2501 REMARK 3 19 2.0156 - 1.9796 0.99 2746 145 0.1846 0.2250 REMARK 3 20 1.9796 - 1.9460 0.99 2755 145 0.1849 0.2292 REMARK 3 21 1.9460 - 1.9146 0.99 2749 145 0.1956 0.2446 REMARK 3 22 1.9146 - 1.8852 0.99 2724 143 0.2009 0.2257 REMARK 3 23 1.8852 - 1.8574 0.97 2754 145 0.2133 0.2522 REMARK 3 24 1.8574 - 1.8313 0.99 2734 144 0.2182 0.2482 REMARK 3 25 1.8313 - 1.8065 0.98 2710 143 0.2305 0.2423 REMARK 3 26 1.8065 - 1.7831 0.99 2791 147 0.2416 0.2434 REMARK 3 27 1.7831 - 1.7608 0.98 2682 142 0.2508 0.2636 REMARK 3 28 1.7608 - 1.7395 0.99 2747 144 0.2629 0.2811 REMARK 3 29 1.7395 - 1.7193 0.98 2723 143 0.2731 0.3241 REMARK 3 30 1.7193 - 1.7000 0.98 2760 146 0.2974 0.3219 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) : 0.170 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 23.130 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.21 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 : 0.006 4722 REMARK 3 ANGLE : 0.813 6455 REMARK 3 CHIRALITY : 0.052 700 REMARK 3 PLANARITY : 0.006 806 REMARK 3 DIHEDRAL : 7.699 3793 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 6QVT COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 05-MAR-19. REMARK 100 THE DEPOSITION ID IS D_1292100980. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 27-NOV-17 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : ID23-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.976254 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 : XDS REMARK 200 DATA SCALING SOFTWARE : XSCALE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 104377 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 48.346 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.7 REMARK 200 DATA REDUNDANCY : 3.400 REMARK 200 R MERGE (I) : 0.04190 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 13.8700 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.76 REMARK 200 COMPLETENESS FOR SHELL (%) : 97.8 REMARK 200 DATA REDUNDANCY IN SHELL : 3.30 REMARK 200 R MERGE FOR SHELL (I) : 0.61380 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.100 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: 4JS1 REMARK 200 REMARK 200 REMARK: 30-100 UM PRISM-SHAPED PLATES REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 61.62 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.21 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M BIS-TRIS PH 5.5, 0.1 M AMMONIUM REMARK 280 ACETATE, 10% (W/V) PEG 6000, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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 68.33050 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 46.96050 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 68.33050 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 46.96050 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 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 THR A 365 REMARK 465 MET A 366 REMARK 465 GLY A 367 REMARK 465 ALA A 368 REMARK 465 TYR A 369 REMARK 465 HIS A 370 REMARK 465 PRO A 371 REMARK 465 GLY B 132 REMARK 465 ILE B 133 REMARK 465 LYS B 134 REMARK 465 PHE B 135 REMARK 465 MET B 366 REMARK 465 GLY B 367 REMARK 465 ALA B 368 REMARK 465 TYR B 369 REMARK 465 HIS B 370 REMARK 465 PRO B 371 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 ND2 ASN A 212 O1P NCC A 501 2.04 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 ASN A 212 -127.23 51.98 REMARK 500 ASN A 272 68.80 -153.21 REMARK 500 ASP A 361 -148.85 -152.44 REMARK 500 ASN B 212 -127.57 51.46 REMARK 500 ASN B 272 73.57 -154.59 REMARK 500 SER B 346 -169.22 -102.55 REMARK 500 ASP B 361 -143.70 -154.33 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue NCC A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue PEG A 502 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue NCC B 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue PEG B 502 DBREF 6QVT A 132 406 UNP P15907 SIAT1_HUMAN 132 406 DBREF 6QVT B 132 406 UNP P15907 SIAT1_HUMAN 132 406 SEQRES 1 A 275 GLY ILE LYS PHE SER ALA GLU ALA LEU ARG CYS HIS LEU SEQRES 2 A 275 ARG ASP HIS VAL ASN VAL SER MET VAL GLU VAL THR ASP SEQRES 3 A 275 PHE PRO PHE ASN THR SER GLU TRP GLU GLY TYR LEU PRO SEQRES 4 A 275 LYS GLU SER ILE ARG THR LYS ALA GLY PRO TRP GLY ARG SEQRES 5 A 275 CYS ALA VAL VAL SER SER ALA GLY SER LEU LYS SER SER SEQRES 6 A 275 GLN LEU GLY ARG GLU ILE ASP ASP HIS ASP ALA VAL LEU SEQRES 7 A 275 ARG PHE ASN GLY ALA PRO THR ALA ASN PHE GLN GLN ASP SEQRES 8 A 275 VAL GLY THR LYS THR THR ILE ARG LEU MET ASN SER GLN SEQRES 9 A 275 LEU VAL THR THR GLU LYS ARG PHE LEU LYS ASP SER LEU SEQRES 10 A 275 TYR ASN GLU GLY ILE LEU ILE VAL TRP ASP PRO SER VAL SEQRES 11 A 275 TYR HIS SER ASP ILE PRO LYS TRP TYR GLN ASN PRO ASP SEQRES 12 A 275 TYR ASN PHE PHE ASN ASN TYR LYS THR TYR ARG LYS LEU SEQRES 13 A 275 HIS PRO ASN GLN PRO PHE TYR ILE LEU LYS PRO GLN MET SEQRES 14 A 275 PRO TRP GLU LEU TRP ASP ILE LEU GLN GLU ILE SER PRO SEQRES 15 A 275 GLU GLU ILE GLN PRO ASN PRO PRO SER SER GLY MET LEU SEQRES 16 A 275 GLY ILE ILE ILE MET MET THR LEU CYS ASP GLN VAL ASP SEQRES 17 A 275 ILE TYR GLU PHE LEU PRO SER LYS ARG LYS THR ASP VAL SEQRES 18 A 275 CYS TYR TYR TYR GLN LYS PHE PHE ASP SER ALA CYS THR SEQRES 19 A 275 MET GLY ALA TYR HIS PRO LEU LEU TYR GLU LYS ASN LEU SEQRES 20 A 275 VAL LYS HIS LEU ASN GLN GLY THR ASP GLU ASP ILE TYR SEQRES 21 A 275 LEU LEU GLY LYS ALA THR LEU PRO GLY PHE ARG THR ILE SEQRES 22 A 275 HIS CYS SEQRES 1 B 275 GLY ILE LYS PHE SER ALA GLU ALA LEU ARG CYS HIS LEU SEQRES 2 B 275 ARG ASP HIS VAL ASN VAL SER MET VAL GLU VAL THR ASP SEQRES 3 B 275 PHE PRO PHE ASN THR SER GLU TRP GLU GLY TYR LEU PRO SEQRES 4 B 275 LYS GLU SER ILE ARG THR LYS ALA GLY PRO TRP GLY ARG SEQRES 5 B 275 CYS ALA VAL VAL SER SER ALA GLY SER LEU LYS SER SER SEQRES 6 B 275 GLN LEU GLY ARG GLU ILE ASP ASP HIS ASP ALA VAL LEU SEQRES 7 B 275 ARG PHE ASN GLY ALA PRO THR ALA ASN PHE GLN GLN ASP SEQRES 8 B 275 VAL GLY THR LYS THR THR ILE ARG LEU MET ASN SER GLN SEQRES 9 B 275 LEU VAL THR THR GLU LYS ARG PHE LEU LYS ASP SER LEU SEQRES 10 B 275 TYR ASN GLU GLY ILE LEU ILE VAL TRP ASP PRO SER VAL SEQRES 11 B 275 TYR HIS SER ASP ILE PRO LYS TRP TYR GLN ASN PRO ASP SEQRES 12 B 275 TYR ASN PHE PHE ASN ASN TYR LYS THR TYR ARG LYS LEU SEQRES 13 B 275 HIS PRO ASN GLN PRO PHE TYR ILE LEU LYS PRO GLN MET SEQRES 14 B 275 PRO TRP GLU LEU TRP ASP ILE LEU GLN GLU ILE SER PRO SEQRES 15 B 275 GLU GLU ILE GLN PRO ASN PRO PRO SER SER GLY MET LEU SEQRES 16 B 275 GLY ILE ILE ILE MET MET THR LEU CYS ASP GLN VAL ASP SEQRES 17 B 275 ILE TYR GLU PHE LEU PRO SER LYS ARG LYS THR ASP VAL SEQRES 18 B 275 CYS TYR TYR TYR GLN LYS PHE PHE ASP SER ALA CYS THR SEQRES 19 B 275 MET GLY ALA TYR HIS PRO LEU LEU TYR GLU LYS ASN LEU SEQRES 20 B 275 VAL LYS HIS LEU ASN GLN GLY THR ASP GLU ASP ILE TYR SEQRES 21 B 275 LEU LEU GLY LYS ALA THR LEU PRO GLY PHE ARG THR ILE SEQRES 22 B 275 HIS CYS HET NCC A 501 82 HET PEG A 502 7 HET NCC B 501 82 HET PEG B 502 7 HETNAM NCC CYTIDINE-5'-MONOPHOSPHATE-5-N-ACETYLNEURAMINIC ACID HETNAM PEG DI(HYDROXYETHYL)ETHER FORMUL 3 NCC 2(C20 H31 N4 O16 P) FORMUL 4 PEG 2(C4 H10 O3) FORMUL 7 HOH *256(H2 O) HELIX 1 AA1 SER A 136 VAL A 148 1 13 HELIX 2 AA2 THR A 162 GLU A 166 5 5 HELIX 3 AA3 SER A 173 ALA A 178 1 6 HELIX 4 AA4 ALA A 190 LYS A 194 5 5 HELIX 5 AA5 LEU A 198 ASP A 204 1 7 HELIX 6 AA6 PHE A 219 GLY A 224 1 6 HELIX 7 AA7 SER A 234 GLU A 240 1 7 HELIX 8 AA8 LYS A 241 LYS A 245 5 5 HELIX 9 AA9 ASP A 246 GLU A 251 5 6 HELIX 10 AB1 ASP A 265 ASN A 272 1 8 HELIX 11 AB2 PHE A 277 HIS A 288 1 12 HELIX 12 AB3 PRO A 298 SER A 312 1 15 HELIX 13 AB4 SER A 322 LEU A 334 1 13 HELIX 14 AB5 LEU A 373 ASN A 383 1 11 HELIX 15 AB6 THR A 386 GLY A 394 1 9 HELIX 16 AB7 PHE A 401 ILE A 404 5 4 HELIX 17 AB8 ALA B 137 VAL B 148 1 12 HELIX 18 AB9 THR B 162 GLU B 166 5 5 HELIX 19 AC1 SER B 173 ALA B 178 1 6 HELIX 20 AC2 ALA B 190 LYS B 194 5 5 HELIX 21 AC3 LEU B 198 ASP B 204 1 7 HELIX 22 AC4 PHE B 219 GLY B 224 1 6 HELIX 23 AC5 SER B 234 GLU B 240 1 7 HELIX 24 AC6 LYS B 241 LYS B 245 5 5 HELIX 25 AC7 ASP B 246 GLU B 251 5 6 HELIX 26 AC8 ASP B 265 ASN B 272 1 8 HELIX 27 AC9 PHE B 277 HIS B 288 1 12 HELIX 28 AD1 PRO B 298 SER B 312 1 15 HELIX 29 AD2 SER B 322 LEU B 334 1 13 HELIX 30 AD3 LEU B 373 ASN B 383 1 11 HELIX 31 AD4 THR B 386 GLY B 394 1 9 HELIX 32 AD5 PHE B 401 ILE B 404 5 4 SHEET 1 AA1 7 PHE A 293 ILE A 295 0 SHEET 2 AA1 7 ILE A 253 TRP A 257 1 N LEU A 254 O TYR A 294 SHEET 3 AA1 7 ILE A 229 ASN A 233 1 N MET A 232 O ILE A 255 SHEET 4 AA1 7 ALA A 207 PHE A 211 1 N ARG A 210 O LEU A 231 SHEET 5 AA1 7 TRP A 181 VAL A 187 1 N ALA A 185 O LEU A 209 SHEET 6 AA1 7 CYS A 335 TYR A 341 1 O ASP A 339 N CYS A 184 SHEET 7 AA1 7 LYS A 395 PRO A 399 -1 O ALA A 396 N ILE A 340 SHEET 1 AA2 7 PHE B 293 ILE B 295 0 SHEET 2 AA2 7 ILE B 253 TRP B 257 1 N LEU B 254 O TYR B 294 SHEET 3 AA2 7 ILE B 229 ASN B 233 1 N MET B 232 O ILE B 255 SHEET 4 AA2 7 ALA B 207 PHE B 211 1 N ARG B 210 O LEU B 231 SHEET 5 AA2 7 TRP B 181 VAL B 187 1 N ALA B 185 O LEU B 209 SHEET 6 AA2 7 CYS B 335 TYR B 341 1 O ASP B 339 N CYS B 184 SHEET 7 AA2 7 LYS B 395 PRO B 399 -1 O LEU B 398 N VAL B 338 SSBOND 1 CYS A 142 CYS A 406 1555 1555 2.04 SSBOND 2 CYS A 184 CYS A 335 1555 1555 2.08 SSBOND 3 CYS A 353 CYS A 364 1555 1555 2.02 SSBOND 4 CYS B 142 CYS B 406 1555 1555 2.05 SSBOND 5 CYS B 184 CYS B 335 1555 1555 2.06 SSBOND 6 CYS B 353 CYS B 364 1555 1555 2.02 CISPEP 1 PHE A 158 PRO A 159 0 5.94 CISPEP 2 GLY A 179 PRO A 180 0 1.19 CISPEP 3 PHE B 158 PRO B 159 0 5.49 CISPEP 4 GLY B 179 PRO B 180 0 3.61 SITE 1 AC1 15 SER A 188 SER A 189 ALA A 190 PHE A 211 SITE 2 AC1 15 ASN A 212 ASN A 233 GLN A 235 SER A 322 SITE 3 AC1 15 SER A 323 GLY A 324 PHE A 343 CYS A 353 SITE 4 AC1 15 TYR A 354 HOH A 617 HOH A 672 SITE 1 AC2 5 TYR A 270 ASN A 276 PHE A 278 ASN A 279 SITE 2 AC2 5 HOH A 603 SITE 1 AC3 16 SER B 188 SER B 189 ALA B 190 PHE B 211 SITE 2 AC3 16 ASN B 212 ASN B 233 SER B 322 SER B 323 SITE 3 AC3 16 GLY B 324 PHE B 343 CYS B 353 TYR B 354 SITE 4 AC3 16 ALA B 363 HOH B 607 HOH B 645 HOH B 672 SITE 1 AC4 4 TYR B 270 ASN B 276 ASN B 279 HOH B 605 CRYST1 136.661 93.921 63.718 90.00 94.39 90.00 C 1 2 1 8 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 0.007317 0.000000 0.000562 0.00000 SCALE2 0.000000 0.010647 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015740 0.00000