PDB Short entry for 1KBB HEADER HYDROLASE 05-NOV-01 1KBB TITLE MECHANISTIC ANALYSES OF CATALYSIS IN HUMAN PANCREATIC ALPHA-AMYLASE: TITLE 2 DETAILED KINETIC AND STRUCTURAL STUDIES OF MUTANTS OF THREE CONSERVED TITLE 3 CARBOXYLIC ACIDS 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; 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 AMYLASE, GLYCOSYLATION, MUTAGENESIS, DIABETES, HYDROLASE, KEYWDS 2 GLYCOSIDASE, CARBOHYDRATE METABOLISM, CATALYSIS, PANCREATIC, ENZYME, KEYWDS 3 HUMAN EXPDTA X-RAY DIFFRACTION AUTHOR E.H.RYDBERG,C.LI,R.MAURUS,C.M.OVERALL,G.D.BRAYER,S.G.WITHERS REVDAT 4 27-OCT-21 1KBB 1 REMARK SEQADV LINK REVDAT 3 25-DEC-19 1KBB 1 SEQADV SEQRES LINK REVDAT 2 24-FEB-09 1KBB 1 VERSN REVDAT 1 10-APR-02 1KBB 0 JRNL AUTH E.H.RYDBERG,C.LI,R.MAURUS,C.M.OVERALL,G.D.BRAYER,S.G.WITHERS JRNL TITL MECHANISTIC ANALYSES OF CATALYSIS IN HUMAN PANCREATIC JRNL TITL 2 ALPHA-AMYLASE: DETAILED KINETIC AND STRUCTURAL STUDIES OF JRNL TITL 3 MUTANTS OF THREE CONSERVED CARBOXYLIC ACIDS. JRNL REF BIOCHEMISTRY V. 41 4492 2002 JRNL REFN ISSN 0006-2960 JRNL PMID 11914097 JRNL DOI 10.1021/BI011821Z REMARK 2 REMARK 2 RESOLUTION. 1.90 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) : 1.90 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) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 40110 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) : 0.172 REMARK 3 FREE R VALUE : 0.194 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 : 3942 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 120 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) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : NULL 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 1KBB COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-NOV-01. REMARK 100 THE DEPOSITION ID IS D_1000014774. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 02-OCT-99 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 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 : MIRRORS REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 40335 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 92.5 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.05800 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 19.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.97 REMARK 200 COMPLETENESS FOR SHELL (%) : 80.9 REMARK 200 DATA REDUNDANCY IN SHELL : 3.10 REMARK 200 R MERGE FOR SHELL (I) : 0.24000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 4.300 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: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 49.25 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.42 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MPD, CACODYLATE, PH 7.5, 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 26.46000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 68.47000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.38500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 68.47000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 26.46000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.38500 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 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 O ALA A 307 N GLY A 308 1.57 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 ALA A 307 C GLY A 308 N -0.374 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 PCA A 1 O - C - N ANGL. DEV. = -11.4 DEGREES REMARK 500 ALA A 307 CA - C - N ANGL. DEV. = 31.6 DEGREES REMARK 500 ALA A 307 O - C - N ANGL. DEV. = -32.3 DEGREES REMARK 500 GLY A 308 C - N - CA ANGL. DEV. = 43.0 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 TYR A 31 -58.09 -138.03 REMARK 500 MET A 102 -143.50 -114.13 REMARK 500 ASP A 317 54.07 -111.61 REMARK 500 PRO A 345 80.22 -69.12 REMARK 500 THR A 376 -0.39 73.49 REMARK 500 SER A 414 -110.33 -124.56 REMARK 500 ASN A 459 72.32 47.35 REMARK 500 PRO A 486 33.67 -72.76 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 PCA A 1 TYR A 2 -142.27 REMARK 500 ALA A 307 GLY A 308 92.30 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 22.19 REMARK 500 ALA A 307 10.15 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 CA A 497 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASN A 100 OD1 REMARK 620 2 ARG A 158 O 159.3 REMARK 620 3 ASP A 167 OD1 82.6 114.8 REMARK 620 4 ASP A 167 OD2 127.1 73.6 51.7 REMARK 620 5 HIS A 201 O 78.7 80.6 141.2 153.6 REMARK 620 6 HOH A 806 O 101.4 75.0 134.0 95.0 83.3 REMARK 620 7 HOH A 839 O 102.8 73.4 74.0 90.0 77.3 145.1 REMARK 620 8 HOH A 843 O 68.5 124.4 76.7 75.4 125.5 63.1 150.4 REMARK 620 N 1 2 3 4 5 6 7 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 497 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 498 DBREF 1KBB A 1 496 UNP P04746 AMYP_HUMAN 16 511 SEQADV 1KBB ALA A 233 UNP P04746 GLU 248 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 ALA 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 ASN 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 1KBB PCA A 1 GLN PYROGLUTAMIC ACID HET PCA A 1 8 HET CA A 497 1 HET CL A 498 1 HETNAM PCA PYROGLUTAMIC ACID HETNAM CA CALCIUM ION HETNAM CL CHLORIDE ION FORMUL 1 PCA C5 H7 N O3 FORMUL 2 CA CA 2+ FORMUL 3 CL CL 1- FORMUL 4 HOH *120(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 LYS A 172 GLY A 190 1 19 HELIX 7 7 ALA A 198 MET A 202 5 5 HELIX 8 8 TRP A 203 ASP A 212 1 10 HELIX 9 9 LYS A 243 PHE A 248 5 6 HELIX 10 10 PHE A 256 ARG A 267 1 12 HELIX 11 11 LYS A 273 TRP A 280 5 8 HELIX 12 12 GLY A 281 GLY A 285 5 5 HELIX 13 13 PRO A 288 ASP A 290 5 3 HELIX 14 14 ASP A 300 GLY A 304 5 5 HELIX 15 15 GLY A 308 ILE A 312 5 5 HELIX 16 16 THR A 314 TRP A 316 5 3 HELIX 17 17 ASP A 317 HIS A 331 1 15 HELIX 18 18 CYS A 384 ARG A 387 5 4 HELIX 19 19 TRP A 388 ASP A 402 1 15 HELIX 20 20 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 GLY A 39 N VAL A 14 SHEET 3 A 9 ARG A 92 ALA A 97 1 O ARG A 92 N VAL A 40 SHEET 4 A 9 GLY A 193 LEU A 196 1 O GLY A 193 N VAL A 95 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 N LEU A 293 O 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 O ILE A 13 N 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 N LEU A 166 O 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 ALA A 418 N TYR A 410 SHEET 3 E 4 GLY A 425 ASN A 430 -1 O GLY A 425 N ARG A 421 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 ALA A 475 N LEU A 440 SSBOND 1 CYS A 28 CYS A 86 1555 1555 2.04 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 2.02 LINK C PCA A 1 N TYR A 2 1555 1555 1.35 LINK OD1 ASN A 100 CA CA A 497 1555 1555 2.43 LINK O ARG A 158 CA CA A 497 1555 1555 2.42 LINK OD1 ASP A 167 CA CA A 497 1555 1555 2.48 LINK OD2 ASP A 167 CA CA A 497 1555 1555 2.57 LINK O HIS A 201 CA CA A 497 1555 1555 2.49 LINK CA CA A 497 O HOH A 806 1555 1555 2.44 LINK CA CA A 497 O HOH A 839 1555 1555 2.38 LINK CA CA A 497 O HOH A 843 1555 1555 2.53 CISPEP 1 ASN A 53 PRO A 54 0 -0.02 CISPEP 2 VAL A 129 PRO A 130 0 -0.29 SITE 1 AC1 7 ASN A 100 ARG A 158 ASP A 167 HIS A 201 SITE 2 AC1 7 HOH A 806 HOH A 839 HOH A 843 SITE 1 AC2 3 ARG A 195 ASN A 298 ARG A 337 CRYST1 52.920 74.770 136.940 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 0.018896 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013374 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007302 0.00000 HETATM 1 N PCA A 1 13.737 59.227 0.185 1.00 25.74 N HETATM 2 CA PCA A 1 13.115 58.471 1.264 1.00 26.26 C HETATM 3 CB PCA A 1 13.952 57.251 1.443 1.00 26.40 C HETATM 4 CG PCA A 1 15.050 57.386 0.517 1.00 26.08 C HETATM 5 CD PCA A 1 14.922 58.595 -0.291 1.00 26.76 C HETATM 6 OE PCA A 1 15.684 59.044 -1.208 1.00 28.03 O HETATM 7 C PCA A 1 13.051 59.261 2.554 1.00 26.23 C HETATM 8 O PCA A 1 12.578 58.774 3.571 1.00 28.27 O