HEADER HYDROLASE 17-SEP-04 1XH0 TITLE STRUCTURE OF THE N298S VARIANT OF HUMAN PANCREATIC ALPHA-AMYLASE TITLE 2 COMPLEXED WITH ACARBOSE COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-AMYLASE, PANCREATIC; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: 1,4-ALPHA-D-GLUCAN GLUCANOHYDROLASE, PANCREATIC ALPHA- COMPND 5 AMYLASE, PA; COMPND 6 EC: 3.2.1.1; COMPND 7 ENGINEERED: YES; COMPND 8 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 EXPRESSION_SYSTEM: PICHIA PASTORIS; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 4922 KEYWDS CHLORIDE AMYLASE ENZYME ACARBOSE INHIBITOR, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR R.MAURUS,A.BEGUM,H.H.KUO,A.RACAZA,S.NUMAO,C.M.OVERALL,S.G.WITHERS, AUTHOR 2 G.D.BRAYER REVDAT 8 30-OCT-24 1XH0 1 REMARK REVDAT 7 25-OCT-23 1XH0 1 REMARK REVDAT 6 10-NOV-21 1XH0 1 SEQADV HETSYN REVDAT 5 29-JUL-20 1XH0 1 COMPND REMARK HETNAM LINK REVDAT 5 2 1 SITE REVDAT 4 25-DEC-19 1XH0 1 SEQADV SEQRES LINK REVDAT 3 13-JUL-11 1XH0 1 VERSN REVDAT 2 24-FEB-09 1XH0 1 VERSN REVDAT 1 24-MAY-05 1XH0 0 JRNL AUTH R.MAURUS,A.BEGUM,H.H.KUO,A.RACAZA,S.NUMAO,C.ANDERSEN, JRNL AUTH 2 J.W.TAMS,J.VIND,C.M.OVERALL,S.G.WITHERS,G.D.BRAYER JRNL TITL STRUCTURAL AND MECHANISTIC STUDIES OF CHLORIDE INDUCED JRNL TITL 2 ACTIVATION OF HUMAN PANCREATIC ALPHA-AMYLASE JRNL REF PROTEIN SCI. V. 14 743 2005 JRNL REFN ISSN 0961-8368 JRNL PMID 15722449 JRNL DOI 10.1110/PS.041079305 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.0 REMARK 3 NUMBER OF REFLECTIONS : 33885 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) : 0.164 REMARK 3 FREE R VALUE : 0.205 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1650 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 : 3943 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 80 REMARK 3 SOLVENT ATOMS : 280 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) : 0.003 REMARK 3 BOND ANGLES (DEGREES) : 1.100 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : 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 1XH0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 22-SEP-04. REMARK 100 THE DEPOSITION ID IS D_1000030349. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-AUG-02 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 7.0 REMARK 200 NUMBER OF CRYSTALS USED : NULL 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 RU300 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : OSMIC MIRRORS REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 33885 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 25.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.0 REMARK 200 DATA REDUNDANCY : 4.900 REMARK 200 R MERGE (I) : 0.08600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 17.2000 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1BSI REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.70 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.18 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MPD, CACODYLATE, PH 7.0, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 298K 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 26.70000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 66.20000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 34.55000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 66.20000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 26.70000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 34.55000 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 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 PCA A 1 OE 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 NE2 HIS A 215 OD1 ASP A 290 4556 2.15 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 TYR A 31 -57.46 -137.30 REMARK 500 MET A 102 -155.02 -115.13 REMARK 500 THR A 163 48.51 39.87 REMARK 500 ASP A 317 49.72 -105.31 REMARK 500 ALA A 318 -60.98 -28.81 REMARK 500 SER A 414 -108.92 -137.69 REMARK 500 ASN A 459 80.18 48.05 REMARK 500 PRO A 486 42.47 -72.31 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 PCA A 1 20.75 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1XGZ RELATED DB: PDB REMARK 900 THE N298S VARIANT OF HUMAN PANCREATIC ALPHA-AMYLASE REMARK 900 RELATED ID: 1XH1 RELATED DB: PDB REMARK 900 THE N298S VARIANT OF HUMAN PANCREATIC ALPHA-AMYLASE COMPLEXED WITH REMARK 900 CHLORIDE REMARK 900 RELATED ID: 1XH2 RELATED DB: PDB REMARK 900 THE N298S VARIANT OF HUMAN PANCREATIC ALPHA-AMYLASE COMPLEXED WITH REMARK 900 CHLORIDE AND ACARBOSE DBREF 1XH0 A 1 496 UNP P04746 AMYP_HUMAN 16 511 SEQADV 1XH0 SER A 298 UNP P04746 ASN 313 ENGINEERED MUTATION SEQRES 1 A 496 PCA TYR SER PRO ASN THR GLN GLN GLY ARG THR SER ILE SEQRES 2 A 496 VAL HIS LEU PHE GLU TRP ARG TRP VAL ASP ILE ALA LEU SEQRES 3 A 496 GLU CYS GLU ARG TYR LEU ALA PRO LYS GLY PHE GLY GLY SEQRES 4 A 496 VAL GLN VAL SER PRO PRO ASN GLU ASN VAL ALA ILE TYR SEQRES 5 A 496 ASN PRO PHE ARG PRO TRP TRP GLU ARG TYR GLN PRO VAL SEQRES 6 A 496 SER TYR LYS LEU CYS THR ARG SER GLY ASN GLU ASP GLU SEQRES 7 A 496 PHE ARG ASN MET VAL THR ARG CYS ASN ASN VAL GLY VAL SEQRES 8 A 496 ARG ILE TYR VAL ASP ALA VAL ILE ASN HIS MET CYS GLY SEQRES 9 A 496 ASN ALA VAL SER ALA GLY THR SER SER THR CYS GLY SER SEQRES 10 A 496 TYR PHE ASN PRO GLY SER ARG ASP PHE PRO ALA VAL PRO SEQRES 11 A 496 TYR SER GLY TRP ASP PHE ASN ASP GLY LYS CYS LYS THR SEQRES 12 A 496 GLY SER GLY ASP ILE GLU ASN TYR ASN ASP ALA THR GLN SEQRES 13 A 496 VAL ARG ASP CYS ARG LEU THR GLY LEU LEU ASP LEU ALA SEQRES 14 A 496 LEU GLU LYS ASP TYR VAL ARG SER LYS ILE ALA GLU TYR SEQRES 15 A 496 MET ASN HIS LEU ILE ASP ILE GLY VAL ALA GLY PHE ARG SEQRES 16 A 496 LEU ASP ALA SER LYS HIS MET TRP PRO GLY ASP ILE LYS SEQRES 17 A 496 ALA ILE LEU ASP LYS LEU HIS ASN LEU ASN SER ASN TRP SEQRES 18 A 496 PHE PRO ALA GLY SER LYS PRO PHE ILE TYR GLN GLU VAL SEQRES 19 A 496 ILE ASP LEU GLY GLY GLU PRO ILE LYS SER SER ASP TYR SEQRES 20 A 496 PHE GLY ASN GLY ARG VAL THR GLU PHE LYS TYR GLY ALA SEQRES 21 A 496 LYS LEU GLY THR VAL ILE ARG LYS TRP ASN GLY GLU LYS SEQRES 22 A 496 MET SER TYR LEU LYS ASN TRP GLY GLU GLY TRP GLY PHE SEQRES 23 A 496 VAL PRO SER ASP ARG ALA LEU VAL PHE VAL ASP SER HIS SEQRES 24 A 496 ASP ASN GLN ARG GLY HIS GLY ALA GLY GLY ALA SER ILE SEQRES 25 A 496 LEU THR PHE TRP ASP ALA ARG LEU TYR LYS MET ALA VAL SEQRES 26 A 496 GLY PHE MET LEU ALA HIS PRO TYR GLY PHE THR ARG VAL SEQRES 27 A 496 MET SER SER TYR ARG TRP PRO ARG GLN PHE GLN ASN GLY SEQRES 28 A 496 ASN ASP VAL ASN ASP TRP VAL GLY PRO PRO ASN ASN ASN SEQRES 29 A 496 GLY VAL ILE LYS GLU VAL THR ILE ASN PRO ASP THR THR SEQRES 30 A 496 CYS GLY ASN ASP TRP VAL CYS GLU HIS ARG TRP ARG GLN SEQRES 31 A 496 ILE ARG ASN MET VAL ILE PHE ARG ASN VAL VAL ASP GLY SEQRES 32 A 496 GLN PRO PHE THR ASN TRP TYR ASP ASN GLY SER ASN GLN SEQRES 33 A 496 VAL ALA PHE GLY ARG GLY ASN ARG GLY PHE ILE VAL PHE SEQRES 34 A 496 ASN ASN ASP ASP TRP SER PHE SER LEU THR LEU GLN THR SEQRES 35 A 496 GLY LEU PRO ALA GLY THR TYR CYS ASP VAL ILE SER GLY SEQRES 36 A 496 ASP LYS ILE ASN GLY ASN CYS THR GLY ILE LYS ILE TYR SEQRES 37 A 496 VAL SER ASP ASP GLY LYS ALA HIS PHE SER ILE SER ASN SEQRES 38 A 496 SER ALA GLU ASP PRO PHE ILE ALA ILE HIS ALA GLU SER SEQRES 39 A 496 LYS LEU MODRES 1XH0 ASN A 461 ASN GLYCOSYLATION SITE MODRES 1XH0 PCA A 1 GLN PYROGLUTAMIC ACID HET PCA A 1 7 HET NAG A 497 14 HET AAO A 500 66 HETNAM PCA PYROGLUTAMIC ACID HETNAM NAG 2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE HETNAM AAO ACARBOSE DERIVED HEXASACCHARIDE HETSYN NAG N-ACETYL-BETA-D-GLUCOSAMINE; 2-ACETAMIDO-2-DEOXY-BETA- HETSYN 2 NAG D-GLUCOSE; 2-ACETAMIDO-2-DEOXY-D-GLUCOSE; 2-ACETAMIDO- HETSYN 3 NAG 2-DEOXY-GLUCOSE; N-ACETYL-D-GLUCOSAMINE HETSYN AAO 4,6-DIDEOXY-4-{[4-[(4-O-HEXOPYRANOSYLHEXOPYRANOSYL) HETSYN 2 AAO OXY]-5,6-DIHYDROXY-3-(HYDROXYMETHYL)CYCLOHEX-2-EN-1- HETSYN 3 AAO YL]AMINO}HEXOPYRANOSYL-(1->4)HEXOPYRANOSYL-(1->4) HETSYN 4 AAO HEXOPYRANOSE FORMUL 1 PCA C5 H7 N O3 FORMUL 2 NAG C8 H15 N O6 FORMUL 3 AAO C37 H63 N O28 FORMUL 4 HOH *280(H2 O) HELIX 1 1 ARG A 20 TYR A 31 1 12 HELIX 2 2 PRO A 57 GLN A 63 5 7 HELIX 3 3 ASN A 75 VAL A 89 1 15 HELIX 4 4 SER A 132 PHE A 136 5 5 HELIX 5 5 ASP A 153 CYS A 160 1 8 HELIX 6 6 ARG A 161 THR A 163 5 3 HELIX 7 7 LYS A 172 GLY A 190 1 19 HELIX 8 8 ALA A 198 MET A 202 5 5 HELIX 9 9 TRP A 203 ASP A 212 1 10 HELIX 10 10 LYS A 243 PHE A 248 5 6 HELIX 11 11 GLU A 255 ARG A 267 1 13 HELIX 12 12 LYS A 273 TRP A 280 5 8 HELIX 13 13 GLY A 281 GLY A 285 5 5 HELIX 14 14 PRO A 288 ASP A 290 5 3 HELIX 15 15 ASP A 300 GLY A 304 5 5 HELIX 16 16 GLY A 308 ILE A 312 5 5 HELIX 17 17 THR A 314 TRP A 316 5 3 HELIX 18 18 ASP A 317 HIS A 331 1 15 HELIX 19 19 CYS A 384 ARG A 387 5 4 HELIX 20 20 TRP A 388 ASP A 402 1 15 HELIX 21 21 GLU A 493 LYS A 495 5 3 SHEET 1 A 9 SER A 12 LEU A 16 0 SHEET 2 A 9 GLY A 39 VAL A 42 1 O GLN A 41 N VAL A 14 SHEET 3 A 9 ARG A 92 ALA A 97 1 O TYR A 94 N VAL A 40 SHEET 4 A 9 GLY A 193 LEU A 196 1 O ARG A 195 N ALA A 97 SHEET 5 A 9 PHE A 229 GLN A 232 1 O PHE A 229 N PHE A 194 SHEET 6 A 9 ARG A 252 THR A 254 1 O ARG A 252 N GLN A 232 SHEET 7 A 9 ALA A 292 VAL A 294 1 O LEU A 293 N VAL A 253 SHEET 8 A 9 PHE A 335 SER A 340 1 O PHE A 335 N VAL A 294 SHEET 9 A 9 SER A 12 LEU A 16 1 N ILE A 13 O VAL A 338 SHEET 1 B 2 HIS A 101 GLY A 104 0 SHEET 2 B 2 LEU A 165 ASP A 167 -1 O LEU A 166 N CYS A 103 SHEET 1 C 2 PHE A 348 GLN A 349 0 SHEET 2 C 2 ASN A 352 ASP A 353 -1 O ASN A 352 N GLN A 349 SHEET 1 D 2 ASN A 362 ASN A 363 0 SHEET 2 D 2 VAL A 366 ILE A 367 -1 O VAL A 366 N ASN A 363 SHEET 1 E 4 PHE A 406 ASP A 411 0 SHEET 2 E 4 GLN A 416 ARG A 421 -1 O GLY A 420 N THR A 407 SHEET 3 E 4 GLY A 425 ASN A 430 -1 O PHE A 429 N VAL A 417 SHEET 4 E 4 PHE A 487 HIS A 491 -1 O ILE A 488 N VAL A 428 SHEET 1 F 2 PHE A 436 GLN A 441 0 SHEET 2 F 2 LYS A 474 ILE A 479 -1 O ILE A 479 N PHE A 436 SHEET 1 G 2 GLY A 447 CYS A 450 0 SHEET 2 G 2 LYS A 466 VAL A 469 -1 O ILE A 467 N TYR A 449 SSBOND 1 CYS A 28 CYS A 86 1555 1555 2.02 SSBOND 2 CYS A 70 CYS A 115 1555 1555 2.03 SSBOND 3 CYS A 141 CYS A 160 1555 1555 2.03 SSBOND 4 CYS A 378 CYS A 384 1555 1555 2.03 SSBOND 5 CYS A 450 CYS A 462 1555 1555 2.03 LINK C PCA A 1 N TYR A 2 1555 1555 1.33 LINK ND2 ASN A 461 C1 NAG A 497 1555 1555 1.45 CISPEP 1 ASN A 53 PRO A 54 0 0.04 CISPEP 2 VAL A 129 PRO A 130 0 -0.16 CRYST1 53.400 69.100 132.400 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 0.018727 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014472 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007553 0.00000 HETATM 1 N PCA A 1 6.075 19.570 66.665 1.00 21.52 N HETATM 2 CA PCA A 1 6.239 19.561 65.212 1.00 22.42 C HETATM 3 CB PCA A 1 5.558 18.312 64.742 1.00 23.08 C HETATM 4 CG PCA A 1 5.021 17.680 65.928 1.00 23.21 C HETATM 5 CD PCA A 1 5.343 18.442 67.130 1.00 24.85 C HETATM 6 C PCA A 1 5.655 20.776 64.502 1.00 20.36 C HETATM 7 O PCA A 1 5.763 20.844 63.262 1.00 20.57 O