1INV - Header Asymmetric Unit

HEADER HYDROLASE 26-SEP-94 1INV

TITLE A SIALIC ACID DERIVED PHOSPHONATE ANALOG INHIBITS DIFFERENT STRAINS OF TITLE 2 INFLUENZA VIRUS NEURAMINIDASE WITH DIFFERENT EFFICIENCIES

COMPND MOL_ID: 1; COMPND 2 MOLECULE: INFLUENZA VIRUS B/LEE/40 NEURAMINIDASE; COMPND 3 CHAIN: A; COMPND 4 EC: 3.2.1.18; COMPND 5 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: INFLUENZA B VIRUS; SOURCE 3 ORGANISM_TAXID: 11520; SOURCE 4 CELL_LINE: 293; SOURCE 5 EXPRESSION_SYSTEM_STRAIN: 293

KEYWDS HYDROLASE, O-GLYCOSYL, NEURAMINIDASE, SIALIDASE

EXPDTA X-RAY DIFFRACTION

AUTHOR C.L.WHITE,M.N.JANAKIRAMAN,W.G.LAVER,C.PHILIPPON,A.VASELLA,G.M.AIR, AUTHOR 2 M.LUO

REVDAT 5 16-NOV-11 1INV 1 HETATM REVDAT 4 13-JUL-11 1INV 1 VERSN REVDAT 3 24-FEB-09 1INV 1 VERSN REVDAT 2 01-APR-03 1INV 1 JRNL REVDAT 1 07-FEB-95 1INV 0

JRNL AUTH C.L.WHITE,M.N.JANAKIRAMAN,W.G.LAVER,C.PHILIPPON,A.VASELLA, JRNL AUTH 2 G.M.AIR,M.LUO JRNL TITL A SIALIC ACID-DERIVED PHOSPHONATE ANALOG INHIBITS DIFFERENT JRNL TITL 2 STRAINS OF INFLUENZA VIRUS NEURAMINIDASE WITH DIFFERENT JRNL TITL 3 EFFICIENCIES. JRNL REF J.MOL.BIOL. V. 245 623 1995 JRNL REFN ISSN 0022-2836 JRNL PMID 7844831 JRNL DOI 10.1006/JMBI.1994.0051

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.N.JANAKIRAMAN,C.L.WHITE,W.G.LAVER,G.M.AIR,M.LUO REMARK 1 TITL STRUCTURE OF INFLUENZA VIRUS NEURAMINIDASE REMARK 1 TITL 2 B(SLASH)LEE(SLASH)40 COMPLEXED WITH SIALIC ACID AND A REMARK 1 TITL 3 DEHYDRO ANALOG AT 1.8 ANGSTROMS RESOLUTION: IMPLICATIONS FOR REMARK 1 TITL 4 THE CATALYTIC MECHANISM REMARK 1 REF BIOCHEMISTRY V. 33 8172 1994 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 2 REMARK 1 AUTH J.N.VARGHESE,P.M.COLMAN REMARK 1 TITL THREE-DIMENSIONAL STRUCTURE OF THE INFLUENZA VIRUS REMARK 1 TITL 2 A(SLASH)TOKYO(SLASH)3(SLASH)67 AT 2.2 ANGSTROMS RESOLUTION REMARK 1 REF J.MOL.BIOL. V. 221 473 1991 REMARK 1 REFN ISSN 0022-2836 REMARK 1 REFERENCE 3 REMARK 1 AUTH W.R.LIP,J.N.VARGHESE,A.T.BAKER,A.VAN DANELAAR,W.G.LAVER, REMARK 1 AUTH 2 R.G.WEBSTER,P.M.COLMAN REMARK 1 TITL REFINED ATOMIC STRUCTURES OF N9 SUBTYPE INFLUENZA VIRUS REMARK 1 TITL 2 NEURAMINIDASE AND ESCAPE MUTANTS REMARK 1 REF J.MOL.BIOL. V. 221 487 1991 REMARK 1 REFN ISSN 0022-2836 REMARK 1 REFERENCE 4 REMARK 1 AUTH K.WALLIMAN,A.VASELLA REMARK 1 TITL PHOSPHONIC-ACID ANALOGS OF THE N-ACETYL-2-DEOXYNEURAMINIC REMARK 1 TITL 2 ACIDS: SYNTHESIS AND INHIBITION OF VIBRIO CHOLEAE SIALIDASE REMARK 1 REF HELV.CHIM.ACTA V. 73 1359 1990 REMARK 1 REFN ISSN 0018-019X

REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 16341 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING SET) : 0.154 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3040 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 37 REMARK 3 SOLVENT ATOMS : 117 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 13.13 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.22 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.012 REMARK 3 BOND ANGLES (DEGREES) : 1.77 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 26.88 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.45 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1INV COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17019 REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 72.3 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 61.74 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.22 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NATIVE CRYSTALS SOAKED IN 10MM EPANA REMARK 280 SOLUTION, PH 7.4.

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 4 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 -Y+1/2,X+1/2,Z REMARK 290 4555 Y+1/2,-X+1/2,Z REMARK 290 5555 -X+1/2,Y+1/2,-Z REMARK 290 6555 X+1/2,-Y+1/2,-Z REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-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 0.000000 -1.000000 0.000000 62.36500 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 62.36500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 62.36500 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 62.36500 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 62.36500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 62.36500 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 62.36500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 62.36500 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 19480 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 45970 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -123.0 KCAL/MOL 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 BIOMT1 2 -1.000000 0.000000 0.000000 124.73000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 62.36500 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 -62.36500 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 62.36500 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 62.36500 REMARK 350 BIOMT3 4 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 CA CA A 469 LIES ON A SPECIAL POSITION.

REMARK 450 REMARK 450 SOURCE REMARK 450 EPANA REMARK 450 SEE WALLIMAN & VASELLA (1990) FOR SYNTHESIS.

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 HH22 ARG A 374 HOP3 EQP A 500 0.81 REMARK 500 HG SER A 158 HE2 HIS A 173 0.99 REMARK 500 H1 HOH A 595 H1 HOH A 596 1.06 REMARK 500 H SER A 110 H2 HOH A 509 1.10 REMARK 500 HD21 ASN A 230 H2 HOH A 559 1.14 REMARK 500 H PHE A 281 H2 HOH A 575 1.15 REMARK 500 H GLY A 145 H2 HOH A 606 1.15 REMARK 500 H GLY A 350 H1 HOH A 585 1.16 REMARK 500 H ASN A 198 H2 HOH A 543 1.17 REMARK 500 HG1 THR A 443 H2 HOH A 611 1.18 REMARK 500 H ALA A 312 H2 HOH A 569 1.19 REMARK 500 HE2 HIS A 101 HG SER A 440 1.20 REMARK 500 HG1 THR A 309 HG1 THR A 311 1.22 REMARK 500 H LYS A 94 H2 HOH A 613 1.24 REMARK 500 HE21 GLN A 93 H LEU A 455 1.27 REMARK 500 HD1 HIS A 173 H2 HOH A 536 1.27 REMARK 500 H HIS A 101 H1 HOH A 603 1.28 REMARK 500 HG1 THR A 166 H ASN A 169 1.28 REMARK 500 HH TYR A 322 H ILE A 333 1.31 REMARK 500 HH TYR A 210 H1 HOH A 549 1.32 REMARK 500 HH11 ARG A 270 HD21 ASN A 340 1.33 REMARK 500 HZ2 LYS A 263 H1 HOH A 565 1.35 REMARK 500 H GLU A 276 H1 HOH A 554 1.40 REMARK 500 HG1 THR A 437 H TRP A 438 1.41 REMARK 500 HD1 HIS A 183 H GLY A 185 1.42 REMARK 500 HE22 GLN A 93 H1 HOH A 613 1.43 REMARK 500 H HIS A 183 H1 HOH A 519 1.45 REMARK 500 HD1 HIS A 129 H1 HOH A 521 1.46 REMARK 500 O GLY A 412 H1 HOH A 573 1.49 REMARK 500 H ARG A 300 H1 HOH A 579 1.51 REMARK 500 H1 HOH A 511 H2 HOH A 513 1.51 REMARK 500 HG1 THR A 213 H1 HOH A 550 1.51 REMARK 500 HH TYR A 143 H1 HOH A 527 1.52 REMARK 500 O ASP A 384 H1 HOH A 592 1.53 REMARK 500 HG SER A 244 H SER A 246 1.55 REMARK 500 HZ3 LYS A 435 H1 HOH A 607 1.55 REMARK 500 NH2 ARG A 374 HOP3 EQP A 500 1.56 REMARK 500 H LYS A 250 H1 HOH A 563 1.58 REMARK 500 H ASN A 230 H2 HOH A 561 1.59 REMARK 500 HH22 ARG A 223 HG SER A 249 1.59 REMARK 500 HH22 ARG A 116 O3P EQP A 500 1.59 REMARK 500 H GLY A 234 H1 HOH A 540 1.59 REMARK 500 HZ1 LYS A 205 H1 HOH A 536 1.60 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 HH TYR A 142 H ASP A 463 4555 1.12 REMARK 500 H ALA A 137 H2 HOH A 508 4555 1.16 REMARK 500 H GLN A 453 H2 HOH A 551 3545 1.23 REMARK 500 H LEU A 97 HE2 HIS A 155 3545 1.35 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 CYS A 229 CA - CB - SG ANGL. DEV. = 6.8 DEGREES 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 GLU A 126 145.05 173.79 REMARK 500 ARG A 186 -32.95 -130.58 REMARK 500 ASP A 199 57.70 -164.55 REMARK 500 ILE A 221 71.08 51.00 REMARK 500 THR A 224 -154.48 -127.57 REMARK 500 SER A 283 -174.86 -173.28 REMARK 500 ARG A 382 117.38 -161.74 REMARK 500 ASP A 384 -155.65 53.57 REMARK 500 TRP A 408 -125.05 -103.01 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CHIRAL CENTERS REMARK 500 REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE REMARK 500 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,A1,6X,F5.1,6X,A1,10X,A1,3X,A16) REMARK 500 REMARK 500 M RES CSSEQI IMPROPER EXPECTED FOUND DETAILS REMARK 500 GLN A 225 24.3 L L OUTSIDE RANGE REMARK 500 REMARK 500 REMARK: NULL

REMARK 600 REMARK 600 HETEROGEN REMARK 600 TWO CALCIUMS ATOMS ARE INCLUDED IN THE REFINED STRUCTURE. REMARK 600 RESIDUE CA 467 STABILIZES A LOOP NEAR THE NEURAMINIDASE REMARK 600 ACTIVE SITE, WHILE CA 468 IS LOCATED ON THE REMARK 600 CRYSTALLOGRAPHIC NEURAMINIDASE TETRAMER FOUR-FOLD AXIS. REMARK 600 REMARK 600 THE EQUATORIAL PHOSPHONATE INHIBITOR IS RESIDUE EQP 500. REMARK 600 EQP IS AN EQUATORIAL PHOSPHONATE ANALOG OF O-SIALIC ACID.

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 A 468 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 293 O REMARK 620 2 THR A 297 O 91.1 REMARK 620 3 HOH A 502 O 81.2 79.3 REMARK 620 4 ASP A 324 OD2 89.9 102.4 171.0 REMARK 620 5 GLY A 346 O 98.0 151.1 75.2 105.0 REMARK 620 6 HOH A 501 O 173.9 83.5 94.9 94.1 85.5 REMARK 620 N 1 2 3 4 5

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: SUBSTRATE (SIALIC ACID) BINDING RESIDUES IN REMARK 800 CATALYTIC SITE REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NAG A 467A REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 468 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 469 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE EQP A 500

DBREF 1INV A 77 466 UNP P03474 NRAM_INBLE 77 466

SEQADV 1INV ARG A 382 UNP P03474 LYS 382 CONFLICT

SEQRES 1 A 390 GLU PRO GLU TRP THR TYR PRO ARG LEU SER CYS GLN GLY SEQRES 2 A 390 SER THR PHE GLN LYS ALA LEU LEU ILE SER PRO HIS ARG SEQRES 3 A 390 PHE GLY GLU ILE LYS GLY ASN SER ALA PRO LEU ILE ILE SEQRES 4 A 390 ARG GLU PRO PHE VAL ALA CYS GLY PRO LYS GLU CYS ARG SEQRES 5 A 390 HIS PHE ALA LEU THR HIS TYR ALA ALA GLN PRO GLY GLY SEQRES 6 A 390 TYR TYR ASN GLY THR ARG LYS ASP ARG ASN LYS LEU ARG SEQRES 7 A 390 HIS LEU VAL SER VAL LYS LEU GLY LYS ILE PRO THR VAL SEQRES 8 A 390 GLU ASN SER ILE PHE HIS MET ALA ALA TRP SER GLY SER SEQRES 9 A 390 ALA CYS HIS ASP GLY ARG GLU TRP THR TYR ILE GLY VAL SEQRES 10 A 390 ASP GLY PRO ASP ASN ASP ALA LEU VAL LYS ILE LYS TYR SEQRES 11 A 390 GLY GLU ALA TYR THR ASP THR TYR HIS SER TYR ALA HIS SEQRES 12 A 390 ASN ILE LEU ARG THR GLN GLU SER ALA CYS ASN CYS ILE SEQRES 13 A 390 GLY GLY ASP CYS TYR LEU MET ILE THR ASP GLY SER ALA SEQRES 14 A 390 SER GLY ILE SER LYS CYS ARG PHE LEU LYS ILE ARG GLU SEQRES 15 A 390 GLY ARG ILE ILE LYS GLU ILE LEU PRO THR GLY ARG VAL SEQRES 16 A 390 GLU HIS THR GLU GLU CYS THR CYS GLY PHE ALA SER ASN SEQRES 17 A 390 LYS THR ILE GLU CYS ALA CYS ARG ASP ASN SER TYR THR SEQRES 18 A 390 ALA LYS ARG PRO PHE VAL LYS LEU ASN VAL GLU THR ASP SEQRES 19 A 390 THR ALA GLU ILE ARG LEU MET CYS THR LYS THR TYR LEU SEQRES 20 A 390 ASP THR PRO ARG PRO ASP ASP GLY SER ILE ALA GLY PRO SEQRES 21 A 390 CYS GLU SER ASN GLY ASP LYS TRP LEU GLY GLY ILE LYS SEQRES 22 A 390 GLY GLY PHE VAL HIS GLN ARG MET ALA SER LYS ILE GLY SEQRES 23 A 390 ARG TRP TYR SER ARG THR MET SER LYS THR ASN ARG MET SEQRES 24 A 390 GLY MET GLU LEU TYR VAL ARG TYR ASP GLY ASP PRO TRP SEQRES 25 A 390 THR ASP SER ASP ALA LEU THR LEU SER GLY VAL MET VAL SEQRES 26 A 390 SER ILE GLU GLU PRO GLY TRP TYR SER PHE GLY PHE GLU SEQRES 27 A 390 ILE LYS ASP LYS LYS CYS ASP VAL PRO CYS ILE GLY ILE SEQRES 28 A 390 GLU MET VAL HIS ASP GLY GLY LYS ASP THR TRP HIS SER SEQRES 29 A 390 ALA ALA THR ALA ILE TYR CYS LEU MET GLY SER GLY GLN SEQRES 30 A 390 LEU LEU TRP ASP THR VAL THR GLY VAL ASP MET ALA LEU

MODRES 1INV ASN A 284 ASN GLYCOSYLATION SITE

HET NAG A 467A 28 HET CA A 468 1 HET CA A 469 1 HET EQP A 500 40

HETNAM NAG N-ACETYL-D-GLUCOSAMINE HETNAM CA CALCIUM ION HETNAM EQP (4-ACETAMIDO-2,4-DIDEOXY-D-GLYCERO-ALPHA-D-GALACTO-1- HETNAM 2 EQP OCTOPYRANOSYL)PHOSPHONIC ACID

FORMUL 2 NAG C8 H15 N O6 FORMUL 3 CA 2(CA 2+) FORMUL 5 EQP C10 H20 N O9 P FORMUL 6 HOH *117(H2 O)

HELIX 1 1 SER A 99 GLY A 104 5 6 HELIX 2 2 PRO A 196 ASP A 199 5 4

SHEET 1 A 4 PHE A 92 ILE A 98 0 SHEET 2 A 4 SER A 440 LEU A 448 -1 O THR A 443 N ILE A 98 SHEET 3 A 4 ASP A 421 HIS A 431 -1 O PRO A 423 N LEU A 448 SHEET 4 A 4 SER A 410 LYS A 416 -1 O PHE A 411 N GLY A 426 SHEET 1 B 4 LEU A 113 CYS A 122 0 SHEET 2 B 4 CYS A 127 ALA A 137 -1 N ARG A 128 O ALA A 121 SHEET 3 B 4 HIS A 155 LYS A 160 -1 O HIS A 155 N THR A 133 SHEET 4 B 4 ILE A 171 ALA A 175 -1 N ILE A 171 O SER A 158 SHEET 1 C 4 SER A 178 HIS A 183 0 SHEET 2 C 4 TRP A 188 ASP A 194 -1 N THR A 189 O CYS A 182 SHEET 3 C 4 LEU A 201 TYR A 206 -1 N LEU A 201 O ASP A 194 SHEET 4 C 4 ALA A 209 HIS A 215 -1 O ALA A 209 N TYR A 206 SHEET 1 D 4 ARG A 260 ILE A 265 0 SHEET 2 D 4 SER A 249 ARG A 257 -1 O PHE A 253 N ILE A 265 SHEET 3 D 4 ASP A 235 GLY A 243 -1 N CYS A 236 O ILE A 256 SHEET 4 D 4 ARG A 223 THR A 224 -1 N ARG A 223 O THR A 241 SHEET 1 E 4 ARG A 260 ILE A 265 0 SHEET 2 E 4 SER A 249 ARG A 257 -1 O PHE A 253 N ILE A 265 SHEET 3 E 4 ASP A 235 GLY A 243 -1 N CYS A 236 O ILE A 256 SHEET 4 E 4 ASN A 230 ILE A 232 -1 O ASN A 230 N TYR A 237 SHEET 1 F 5 THR A 268 GLY A 269 0 SHEET 2 F 5 THR A 311 LEU A 316 1 O ALA A 312 N THR A 268 SHEET 3 F 5 PRO A 301 ASN A 306 -1 N PHE A 302 O ARG A 315 SHEET 4 F 5 THR A 286 ARG A 292 -1 O ILE A 287 N LEU A 305 SHEET 5 F 5 GLU A 275 PHE A 281 -1 O GLU A 275 N ARG A 292 SHEET 1 G 4 PHE A 352 ARG A 356 0 SHEET 2 G 4 ILE A 361 ARG A 367 -1 N GLY A 362 O GLN A 355 SHEET 3 G 4 MET A 375 TYR A 383 -1 N GLU A 378 O ARG A 367 SHEET 4 G 4 THR A 395 PRO A 406 -1 N THR A 395 O VAL A 381

SSBOND 1 CYS A 87 CYS A 420 1555 1555 2.01 SSBOND 2 CYS A 122 CYS A 127 1555 1555 2.03 SSBOND 3 CYS A 182 CYS A 229 1555 1555 2.02 SSBOND 4 CYS A 231 CYS A 236 1555 1555 2.03 SSBOND 5 CYS A 277 CYS A 291 1555 1555 2.02 SSBOND 6 CYS A 279 CYS A 289 1555 1555 2.02 SSBOND 7 CYS A 318 CYS A 337 1555 1555 2.02 SSBOND 8 CYS A 424 CYS A 447 1555 1555 2.02

LINK ND2 ASN A 284 C1 NAG A 467A 1555 1555 1.44 LINK CA CA A 468 O ASP A 293 1555 1555 2.48 LINK CA CA A 468 O THR A 297 1555 1555 2.54 LINK CA CA A 468 O HOH A 502 1555 1555 2.48 LINK CA CA A 468 OD2 ASP A 324 1555 1555 2.26 LINK CA CA A 468 O GLY A 346 1555 1555 2.40 LINK CA CA A 468 O HOH A 501 1555 1555 2.55 LINK CA CA A 469 OE1 GLU A 168 1555 1555 2.26 LINK CA CA A 469 OE1 GLU A 168 1555 3545 2.26 LINK CA CA A 469 OE1 GLU A 168 1555 2655 2.26 LINK CA CA A 469 OE1 GLU A 168 1555 4555 2.26

CISPEP 1 GLN A 138 PRO A 139 0 0.39 CISPEP 2 THR A 325 PRO A 326 0 -0.57

SITE 1 CAT 11 ARG A 116 GLU A 117 ASP A 149 ARG A 150 SITE 2 CAT 11 TRP A 177 ILE A 221 ARG A 223 GLU A 275 SITE 3 CAT 11 ARG A 292 ARG A 374 TYR A 409 SITE 1 AC1 2 PRO A 83 ASN A 284 SITE 1 AC2 6 ASP A 293 THR A 297 ASP A 324 GLY A 346 SITE 2 AC2 6 HOH A 501 HOH A 502 SITE 1 AC3 1 GLU A 168 SITE 1 AC4 13 ARG A 116 GLU A 117 ASP A 149 ARG A 150 SITE 2 AC4 13 ARG A 223 ALA A 245 GLU A 275 ARG A 292 SITE 3 AC4 13 ARG A 374 TYR A 409 HOH A 537 HOH A 553 SITE 4 AC4 13 HOH A 555

CRYST1 124.730 124.730 71.880 90.00 90.00 90.00 P 4 21 2 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 0.008017 0.000000 0.000000 0.00000

SCALE2 0.000000 0.008017 0.000000 0.00000

SCALE3 0.000000 0.000000 0.013912 0.00000