HEADER TOXIN/RECEPTOR COMPLEX 15-SEP-93 1CHB OBSLTE 03-DEC-97 1CHB 2CHB TITLE 2.2 ANGSTROMS CRYSTAL STRUCTURE OF CHOLERA TOXIN B5 TITLE 2 PENTAMER BOUND TO RECEPTOR G=M1= PENTASACCHARIDE COMPND MOL_ID: 1; COMPND 2 MOLECULE:; COMPND 3 CHAIN: D, E, F, G, H; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1 KEYWDS TOXIN/RECEPTOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR E.A.MERRITT,F.VAN DEN AKKAR,W.G.J.HOL REVDAT 1 31-JAN-94 1CHB 0 JRNL AUTH E.A.MERRITT,S.SARFATY,F.VAN DEN AKKER,C.L'HOIR, JRNL AUTH 2 J.A.MARTIAL,W.G.J.HOL JRNL TITL 2.2 ANGSTROMS CRYSTAL STRUCTURE OF CHOLERA TOXIN JRNL TITL 2 B5 PENTAMER BOUND TO RECEPTOR G=M1= PENTASACCHARIDE JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 1CHB REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL 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 : NULL 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) : 0.171 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 : 4070 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 228 REMARK 3 SOLVENT ATOMS : 284 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL 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) : 0.017 REMARK 3 BOND ANGLES (DEGREES) : 3.33 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL 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 1CHB COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 5 REMARK 5 1CHB ASYMMETRIC UNIT CONTAINS ONE B PENTAMER COMPLEXED WITH REMARK 5 1CHB FIVE MOLECULES OF THE PENTASACCHARIDE WHICH FORMS THE REMARK 5 1CHB EXTRA-CELLULAR PORTION OF GANGLIOSIDE GM1 (THE REMARK 5 RECEPTOR 1CHB FOR THE CHOLERA TOXIN). 1CHB REMARK 6 REMARK 6 1CHB THE FIVE IDENTICAL B SUBUNITS ARE LABELLED AS CHAINS REMARK 6 D, E, 1CHB F, G, AND H CORRESPONDING TO CHAIN IDENTIFIERS REMARK 6 USED FOR 1CHB THE RELATED HEAT-LABILE ENTEROTOXIN (LT) FROM REMARK 6 ESCHERICHIA 1CHB COLI. EACH BOUND PENTASACCHARIDE IS GIVEN REMARK 6 THE CHAIN 1CHB IDENTIFIER CORRESPONDING TO THE B SUBUNIT TO REMARK 6 WHICH IT IS 1CHB BOUND. 1CHB 1CHB SUBUNIT CHAIN RESIDUES REMARK 6 1CHB B#1 D 1 - 103 1CHB B#2 E 1 - 103 1CHB B#3 F 1 - 103 REMARK 6 1CHB B#4 G 1 - 103 1CHB B#5 H 1 - 103 1CHB SACCHARIDE D 104 REMARK 6 - 105 1CHB SACCHARIDE E 104 - 108 1CHB SACCHARIDE F 104 - REMARK 6 108 1CHB SACCHARIDE G 104 - 108 1CHB SACCHARIDE H 104 - 108 REMARK 6 1CHB WATER 1 - 284 1CHB REMARK 7 REMARK 7 1CHB INITIAL MET RESIDUE OF EACH B SUBUNIT (NOT PRESENT IN REMARK 7 1CHB NATURALLY OCCURRING TOXIN) IS OMITED FROM MODEL DUE TO REMARK 7 LACK 1CHB OF ELECTRON DENSITY. 1CHB SACCHARIDE MODEL IS REMARK 7 INCOMPLETE IN FOUR OF THE FIVE COPIES. 1CHB ELECTRON REMARK 7 DENSITY IS PRESENT IN ALL CASES, BUT IS NOT 1CHB REMARK 7 SUFFICIENTLY CLEAR TO PERMIT UNAMBIGUOUS MODELING OF THE REMARK 7 1CHB FULL PENTASACCHARIDE EXCEPT IN COPY H. 1CHB SACCHARIDE REMARK 7 D (PARTIAL) GAL 104, NGA 105 1CHB SACCHARIDE E (PARTIAL) REMARK 7 GAL 104, NGA 105, SIA 108 1CHB SACCHARIDE F (PARTIAL) GAL REMARK 7 104, NGA 105, SIA 108 1CHB SACCHARIDE G (PARTIAL) GAL 104, REMARK 7 NGA 105, SIA 108 1CHB SACCHARIDE H (COMPLETE) GAL 104, NGA REMARK 7 105, GAL 106, GLC 107, 1CHB SIA 108 1CHB REMARK 8 REMARK 8 1CHB THE PENTASACCHARIDE MOIETY OF GANGLIOSIDE GM1 IS A REMARK 8 BRANCHED 1CHB GAL(B1-3)GALNAC(B1-4){ NEUAC(A2-3) } GAL(B1- REMARK 8 4)GLC 1CHB REMARK 9 REMARK 9 1CHB IN THE PENTAMER THE BETA SHEETS FROM ADJACENT MONOMERS REMARK 9 1CHB COMBINE TO FORM A CONTINUOUS SIX-STRANDED ANTI- REMARK 9 PARALLEL 1CHB SHEET ACROSS EACH MONOMER-MONOMER INTERFACE. REMARK 9 1CHB REMARK 10 REMARK 10 1CHB THE TRANSFORMATION PRESENTED AS *MTRIX 1* BELOW WILL REMARK 10 YIELD 1CHB APPROXIMATE COORDINATES FOR CHAIN *H* WHEN REMARK 10 APPLIED TO CHAIN 1CHB *D*. THE TRANSFORMATION PRESENTED AS REMARK 10 *MTRIX 2* BELOW WILL 1CHB YIELD APPROXIMATE COORDINATES FOR REMARK 10 CHAIN *H* WHEN APPLIED TO 1CHB CHAIN *E*. THE REMARK 10 TRANSFORMATION PRESENTED AS *MTRIX 3* BELOW 1CHB WILL YIELD REMARK 10 APPROXIMATE COORDINATES FOR CHAIN *H* WHEN 1CHB APPLIED TO REMARK 10 CHAIN *F*. THE TRANSFORMATION PRESENTED AS 1CHB *MTRIX 4* REMARK 10 BELOW WILL YIELD APPROXIMATE COORDINATES FOR 1CHB CHAIN *H* REMARK 10 WHEN APPLIED TO CHAIN *G*. 1CHB REMARK 11 REMARK 11 1CHB THE SEQUENCE AND STRUCTURE REPORTED HERE CORRESPOND TO REMARK 11 THAT 1CHB FROM STRAIN OGAWA 41 (CLASSICAL BIOTYPE). 1CHB 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 : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.81 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.27 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 1/2+X,1/2+Y,Z REMARK 290 4555 1/2-X,1/2+Y,-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 50.95000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 33.79000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 50.95000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 33.79000 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 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT REMARK 300 WHICH CONSISTS OF 5 CHAIN(S). SEE REMARK 350 FOR REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE 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 APPLY THE FOLLOWING TO CHAINS: D, E, F, G, H 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 MET D 0 REMARK 465 MET E 0 REMARK 465 MET F 0 REMARK 465 MET G 0 REMARK 465 MET H 0 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 REMARK 500 C1 NGA H 105 O4 GAL H 106 1.37 REMARK 500 C1 GAL G 104 O3 NGA G 105 1.40 REMARK 500 O3 GAL H 106 C2 SIA H 108 1.40 REMARK 500 C1 GAL F 104 O3 NGA F 105 1.41 REMARK 500 C1 GAL H 106 O4 GLC H 107 1.41 REMARK 500 C1 GAL H 104 O3 NGA H 105 1.42 REMARK 500 C1 GAL D 104 O3 NGA D 105 1.43 REMARK 500 C1 GAL E 104 O3 NGA E 105 1.43 REMARK 500 O5 NGA H 105 O4 GAL H 106 2.19 SEQRES 1 D 104 MET THR PRO GLN ASN ILE THR ASP LEU CYS ALA GLU TYR SEQRES 2 D 104 HIS ASN THR GLN ILE HIS THR LEU ASN ASN LYS ILE PHE SEQRES 3 D 104 SER TYR THR GLU SER LEU ALA GLY LYS ARG GLU MET ALA SEQRES 4 D 104 ILE ILE THR PHE LYS ASN GLY ALA THR PHE GLN VAL GLU SEQRES 5 D 104 VAL PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA SEQRES 6 D 104 ILE GLU ARG MET LYS ASN THR LEU ARG ILE ALA TYR LEU SEQRES 7 D 104 THR GLU ALA LYS VAL GLU LYS LEU CYS VAL TRP ASN ASN SEQRES 8 D 104 LYS THR PRO HIS ALA ILE ALA ALA ILE SER MET ALA ASN SEQRES 1 E 104 MET THR PRO GLN ASN ILE THR ASP LEU CYS ALA GLU TYR SEQRES 2 E 104 HIS ASN THR GLN ILE HIS THR LEU ASN ASN LYS ILE PHE SEQRES 3 E 104 SER TYR THR GLU SER LEU ALA GLY LYS ARG GLU MET ALA SEQRES 4 E 104 ILE ILE THR PHE LYS ASN GLY ALA THR PHE GLN VAL GLU SEQRES 5 E 104 VAL PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA SEQRES 6 E 104 ILE GLU ARG MET LYS ASN THR LEU ARG ILE ALA TYR LEU SEQRES 7 E 104 THR GLU ALA LYS VAL GLU LYS LEU CYS VAL TRP ASN ASN SEQRES 8 E 104 LYS THR PRO HIS ALA ILE ALA ALA ILE SER MET ALA ASN SEQRES 1 F 104 MET THR PRO GLN ASN ILE THR ASP LEU CYS ALA GLU TYR SEQRES 2 F 104 HIS ASN THR GLN ILE HIS THR LEU ASN ASN LYS ILE PHE SEQRES 3 F 104 SER TYR THR GLU SER LEU ALA GLY LYS ARG GLU MET ALA SEQRES 4 F 104 ILE ILE THR PHE LYS ASN GLY ALA THR PHE GLN VAL GLU SEQRES 5 F 104 VAL PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA SEQRES 6 F 104 ILE GLU ARG MET LYS ASN THR LEU ARG ILE ALA TYR LEU SEQRES 7 F 104 THR GLU ALA LYS VAL GLU LYS LEU CYS VAL TRP ASN ASN SEQRES 8 F 104 LYS THR PRO HIS ALA ILE ALA ALA ILE SER MET ALA ASN SEQRES 1 G 104 MET THR PRO GLN ASN ILE THR ASP LEU CYS ALA GLU TYR SEQRES 2 G 104 HIS ASN THR GLN ILE HIS THR LEU ASN ASN LYS ILE PHE SEQRES 3 G 104 SER TYR THR GLU SER LEU ALA GLY LYS ARG GLU MET ALA SEQRES 4 G 104 ILE ILE THR PHE LYS ASN GLY ALA THR PHE GLN VAL GLU SEQRES 5 G 104 VAL PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA SEQRES 6 G 104 ILE GLU ARG MET LYS ASN THR LEU ARG ILE ALA TYR LEU SEQRES 7 G 104 THR GLU ALA LYS VAL GLU LYS LEU CYS VAL TRP ASN ASN SEQRES 8 G 104 LYS THR PRO HIS ALA ILE ALA ALA ILE SER MET ALA ASN SEQRES 1 H 104 MET THR PRO GLN ASN ILE THR ASP LEU CYS ALA GLU TYR SEQRES 2 H 104 HIS ASN THR GLN ILE HIS THR LEU ASN ASN LYS ILE PHE SEQRES 3 H 104 SER TYR THR GLU SER LEU ALA GLY LYS ARG GLU MET ALA SEQRES 4 H 104 ILE ILE THR PHE LYS ASN GLY ALA THR PHE GLN VAL GLU SEQRES 5 H 104 VAL PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA SEQRES 6 H 104 ILE GLU ARG MET LYS ASN THR LEU ARG ILE ALA TYR LEU SEQRES 7 H 104 THR GLU ALA LYS VAL GLU LYS LEU CYS VAL TRP ASN ASN SEQRES 8 H 104 LYS THR PRO HIS ALA ILE ALA ALA ILE SER MET ALA ASN FTNOTE 1 RESIDUE PRO 93 OF CHAINS D, E, F, G, AND H ARE CIS FTNOTE 1 PROLINES. HET GAL D 104 11 HET NGA D 105 14 HET GAL E 104 11 HET NGA E 105 14 HET SIA E 108 20 HET GAL F 104 11 HET NGA F 105 14 HET SIA F 108 20 HET GAL G 104 11 HET NGA G 105 14 HET SIA G 108 20 HET GAL H 104 11 HET NGA H 105 14 HET GAL H 106 11 HET GLC H 107 12 HET SIA H 108 20 HETNAM GAL BETA-D-GALACTOSE HETNAM NGA N-ACETYL-D-GALACTOSAMINE HETNAM SIA O-SIALIC ACID HETNAM GLC GLUCOSE FORMUL 6 GAL 6(C6 H12 O6) FORMUL 6 NGA 5(C8 H15 N O6) FORMUL 8 SIA 4(C11 H19 N O9) FORMUL 13 GLC C6 H12 O6 FORMUL 14 HOH *284(H2 O1) HELIX 1 DA1 ILE D 5 CYS D 9 1 5 HELIX 2 DA2 ASP D 59 THR D 78 1 20 HELIX 3 EA1 ILE E 5 CYS E 9 1 5 HELIX 4 EA2 LYS E 62 THR E 78 1 17 HELIX 5 FA1 ILE F 5 CYS F 9 1 5 HELIX 6 FA2 ASP F 59 THR F 78 1 20 HELIX 7 GA1 ILE G 5 CYS G 9 1 5 HELIX 8 HA2 GLN G 61 THR G 78 1 18 HELIX 9 GA1 ILE H 5 CYS H 9 1 5 HELIX 10 HA2 SER H 60 THR H 78 1 19 SHEET 1 BB1 6 THR D 15 ASN D 22 0 SHEET 2 BB1 6 VAL D 82 TRP D 88 -1 SHEET 3 BB1 6 HIS D 94 ALA D 102 -1 SHEET 4 BB1 6 SER E 26 SER E 30 -1 SHEET 5 BB1 6 MET E 37 THR E 41 -1 SHEET 6 BB1 6 THR E 47 VAL E 50 -1 SHEET 1 BB2 6 THR E 15 ASN E 22 0 SHEET 2 BB2 6 VAL E 82 TRP E 88 -1 SHEET 3 BB2 6 HIS E 94 ALA E 102 -1 SHEET 4 BB2 6 SER F 26 SER F 30 -1 SHEET 5 BB2 6 MET F 37 THR F 41 -1 SHEET 6 BB2 6 THR F 47 VAL F 50 -1 SHEET 1 BB3 6 THR F 15 ASN F 22 0 SHEET 2 BB3 6 VAL F 82 TRP F 88 -1 SHEET 3 BB3 6 HIS F 94 ALA F 102 -1 SHEET 4 BB3 6 SER G 26 SER G 30 -1 SHEET 5 BB3 6 MET G 37 THR G 41 -1 SHEET 6 BB3 6 THR G 47 VAL G 50 -1 SHEET 1 BB4 6 THR G 15 ASN G 22 0 SHEET 2 BB4 6 VAL G 82 TRP G 88 -1 SHEET 3 BB4 6 HIS G 94 ALA G 102 -1 SHEET 4 BB4 6 SER H 26 SER H 30 -1 SHEET 5 BB4 6 MET H 37 THR H 41 -1 SHEET 6 BB4 6 THR H 47 VAL H 50 -1 SHEET 1 BB5 6 THR H 15 ASN H 22 0 SHEET 2 BB5 6 VAL H 82 TRP H 88 -1 SHEET 3 BB5 6 HIS H 94 ALA H 102 -1 SHEET 4 BB5 6 SER D 26 SER D 30 -1 SHEET 5 BB5 6 MET D 37 THR D 41 -1 SHEET 6 BB5 6 THR D 47 VAL D 50 -1 SSBOND 1 CYS D 9 CYS D 86 SSBOND 2 CYS E 9 CYS E 86 SSBOND 3 CYS F 9 CYS F 86 SSBOND 4 CYS G 9 CYS G 86 SSBOND 5 CYS H 9 CYS H 86 CISPEP 1 THR D 92 PRO D 93 0 -2.76 CISPEP 2 THR E 92 PRO E 93 0 -4.31 CISPEP 3 THR F 92 PRO F 93 0 -10.36 CISPEP 4 THR G 92 PRO G 93 0 -13.80 CISPEP 5 THR H 92 PRO H 93 0 -4.17 CRYST1 101.900 67.580 80.470 90.00 105.69 90.00 C 1 2 1 20 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 0.009814 0.000000 0.002757 0.00000 SCALE2 0.000000 0.014797 0.000000 0.00000 SCALE3 0.000000 0.000000 0.012908 0.00000 MTRIX1 1 0.451348 -0.852471 -0.263775 38.12210 1 MTRIX2 1 0.845821 0.314495 0.430906 20.78470 1 MTRIX3 1 -0.284379 -0.417595 0.862985 18.81040 1 MTRIX1 2 -0.451209 -0.536654 -0.713031 32.37560 1 MTRIX2 2 0.521179 -0.807037 0.277602 67.89900 1 MTRIX3 2 -0.724419 -0.246360 0.643835 15.42260 1 MTRIX1 3 -0.448617 0.509795 -0.734065 -8.98500 1 MTRIX2 3 -0.532801 -0.811995 -0.238300 76.05360 1 MTRIX3 3 -0.717542 0.284205 0.635894 -5.77370 1 MTRIX1 4 0.444061 0.849074 -0.286151 -29.47840 1 MTRIX2 4 -0.854035 0.304509 -0.421781 34.30080 1 MTRIX3 4 -0.270988 0.431679 0.860360 -15.01190 1