1SWN - Header Asymmetric Unit

HEADER BIOTIN-BINDING PROTEIN 27-JAN-98 1SWN

TITLE CORE-STREPTAVIDIN MUTANT W108F IN COMPLEX WITH BIOTIN AT PH TITLE 2 7.0

COMPND MOL_ID: 1; COMPND 2 MOLECULE: CORE-STREPTAVIDIN; COMPND 3 CHAIN: A, B, C, D; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOMYCES AVIDINII; SOURCE 3 ORGANISM_TAXID: 1895; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_PLASMID: PET-210; SOURCE 7 OTHER_DETAILS: PET-210, NOVAGEN, INC., MADISON,WI

KEYWDS BIOTIN-BINDING PROTEIN

EXPDTA X-RAY DIFFRACTION

AUTHOR S.FREITAG,I.LE TRONG,A.CHILKOTI,L.A.KLUMB,P.S.STAYTON, AUTHOR 2 R.E.STENKAMP

REVDAT 4 24-FEB-09 1SWN 1 VERSN REVDAT 3 15-DEC-99 1SWN 1 REMARK REVDAT 2 23-MAR-99 1SWN 1 COMPND REMARK HEADER SOURCE REVDAT 2 2 1 KEYWDS REVDAT 1 09-FEB-99 1SWN 0

JRNL AUTH S.FREITAG,I.LE TRONG,A.CHILKOTI,L.A.KLUMB, JRNL AUTH 2 P.S.STAYTON,R.E.STENKAMP JRNL TITL STRUCTURAL STUDIES OF BINDING SITE TRYPTOPHAN JRNL TITL 2 MUTANTS IN THE HIGH-AFFINITY STREPTAVIDIN-BIOTIN JRNL TITL 3 COMPLEX. JRNL REF J.MOL.BIOL. V. 279 211 1998 JRNL REFN ISSN 0022-2836 JRNL PMID 9636711 JRNL DOI 10.1006/JMBI.1998.1735

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH V.CHU,S.FREITAG,I.LE TRONG,R.E.STENKAMP,P.S.STAYTON REMARK 1 TITL THERMODYNAMIC AND STRUCTURAL CONSEQUENCES OF REMARK 1 TITL 2 FLEXIBLE LOOP DELETION BY CIRCULAR PERMUTATION IN REMARK 1 TITL 3 THE STREPTAVIDIN-BIOTIN SYSTEM REMARK 1 REF PROTEIN SCI. V. 7 848 1998 REMARK 1 REFN ISSN 0961-8368 REMARK 1 REFERENCE 2 REMARK 1 AUTH S.FREITAG,I.LE TRONG,L.KLUMB,P.S.STAYTON, REMARK 1 AUTH 2 R.E.STENKAMP REMARK 1 TITL STRUCTURAL STUDIES OF THE STREPTAVIDIN BINDING LOOP REMARK 1 REF PROTEIN SCI. V. 6 1157 1997 REMARK 1 REFN ISSN 0961-8368

REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97, X-PLOR REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 81.0 REMARK 3 CROSS-VALIDATION METHOD : RFREE REMARK 3 FREE R VALUE TEST SET SELECTION : EVERY 10TH REFLECTION REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.181 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.178 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.268 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1943 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 19403 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : 0.160 REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : 0.157 REMARK 3 FREE R VALUE (F>4SIG(F)) : 0.246 REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : 1657 REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : 16310 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3510 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 48 REMARK 3 SOLVENT ATOMS : 192 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : 3716.00 REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : 3315.50 REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : 0 REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : 14999 REMARK 3 NUMBER OF RESTRAINTS : 14914 REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 ANGLE DISTANCES (A) : 0.020 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000 REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : 0.015 REMARK 3 ZERO CHIRAL VOLUMES (A**3) : 0.078 REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : 0.076 REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : 0.015 REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : 0.000 REMARK 3 SIMILAR ADP COMPONENTS (A**2) : 0.026 REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : 0.000 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: MOEWS & KRETSINGER, J.MOL.BIOL.91(1973)201-2 REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: LOOP RESIDUES 45-48 IN CHAIN B ARE REMARK 3 DISORDERED AND NOT INCLUDED IN THE MODEL. LOOP RESIDUES 45-52 REMARK 3 WERE REFINED WITH AN OCCUPANCY OF 0.5 IN CHAIN C.

REMARK 4 REMARK 4 1SWN 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 : 21-NOV-96 REMARK 200 TEMPERATURE (KELVIN) : 295 REMARK 200 PH : 7.0 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 RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : SIEMENS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : SAINT REMARK 200 DATA SCALING SOFTWARE : SADABS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 19696 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 87.0 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.05600 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 13.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.40 REMARK 200 COMPLETENESS FOR SHELL (%) : 35.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.33000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: SHELXL-97, X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 1SWA REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.37 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.0

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 44.35000 REMARK 290 SMTRY3 2 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 REMARK 350 TOTAL BURIED SURFACE AREA: 10750 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 19200 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -40.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D 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 ALA A 13 REMARK 465 GLU A 14 REMARK 465 ALA A 15 REMARK 465 SER A 136 REMARK 465 ALA A 137 REMARK 465 ALA A 138 REMARK 465 SER A 139 REMARK 465 ALA B 13 REMARK 465 GLU B 14 REMARK 465 ALA B 15 REMARK 465 SER B 45 REMARK 465 ALA B 46 REMARK 465 VAL B 47 REMARK 465 GLY B 48 REMARK 465 LYS B 134 REMARK 465 PRO B 135 REMARK 465 SER B 136 REMARK 465 ALA B 137 REMARK 465 ALA B 138 REMARK 465 SER B 139 REMARK 465 ALA C 13 REMARK 465 GLU C 14 REMARK 465 ALA C 15 REMARK 465 LYS C 134 REMARK 465 PRO C 135 REMARK 465 SER C 136 REMARK 465 ALA C 137 REMARK 465 ALA C 138 REMARK 465 SER C 139 REMARK 465 ALA D 13 REMARK 465 GLU D 14 REMARK 465 ALA D 15 REMARK 465 LYS D 134 REMARK 465 PRO D 135 REMARK 465 SER D 136 REMARK 465 ALA D 137 REMARK 465 ALA D 138 REMARK 465 SER D 139

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 LEU B 56 CA - CB - CG ANGL. DEV. = 15.9 DEGREES REMARK 500 ARG B 84 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 ARG C 84 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 THR D 114 C - N - CA ANGL. DEV. = 17.4 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 SER A 52 -161.09 73.83 REMARK 500 ALA A 63 67.60 -166.24 REMARK 500 ALA B 63 65.85 -156.43 REMARK 500 SER C 52 -168.80 103.15 REMARK 500 ASN C 81 -156.70 -146.68 REMARK 500 GLU C 101 74.81 -111.79 REMARK 500 GLU D 51 121.76 -170.51 REMARK 500 SER D 52 -165.48 74.53 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 BTN A 300 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTN C 500 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTN D 600

DBREF 1SWN A 13 139 UNP P22629 SAV_STRAV 37 163 DBREF 1SWN B 13 139 UNP P22629 SAV_STRAV 37 163 DBREF 1SWN C 13 139 UNP P22629 SAV_STRAV 37 163 DBREF 1SWN D 13 139 UNP P22629 SAV_STRAV 37 163

SEQADV 1SWN PHE A 108 UNP P22629 TRP 132 SUBSTITUTION SEQADV 1SWN PHE B 108 UNP P22629 TRP 132 SUBSTITUTION SEQADV 1SWN PHE C 108 UNP P22629 TRP 132 SUBSTITUTION SEQADV 1SWN PHE D 108 UNP P22629 TRP 132 SUBSTITUTION

SEQRES 1 A 127 ALA GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU SEQRES 2 A 127 GLY SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA SEQRES 3 A 127 LEU THR GLY THR TYR GLU SER ALA VAL GLY ASN ALA GLU SEQRES 4 A 127 SER ARG TYR VAL LEU THR GLY ARG TYR ASP SER ALA PRO SEQRES 5 A 127 ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP THR VAL SEQRES 6 A 127 ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER ALA THR SEQRES 7 A 127 THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU ALA ARG SEQRES 8 A 127 ILE ASN THR GLN PHE LEU LEU THR SER GLY THR THR GLU SEQRES 9 A 127 ALA ASN ALA TRP LYS SER THR LEU VAL GLY HIS ASP THR SEQRES 10 A 127 PHE THR LYS VAL LYS PRO SER ALA ALA SER SEQRES 1 B 127 ALA GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU SEQRES 2 B 127 GLY SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA SEQRES 3 B 127 LEU THR GLY THR TYR GLU SER ALA VAL GLY ASN ALA GLU SEQRES 4 B 127 SER ARG TYR VAL LEU THR GLY ARG TYR ASP SER ALA PRO SEQRES 5 B 127 ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP THR VAL SEQRES 6 B 127 ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER ALA THR SEQRES 7 B 127 THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU ALA ARG SEQRES 8 B 127 ILE ASN THR GLN PHE LEU LEU THR SER GLY THR THR GLU SEQRES 9 B 127 ALA ASN ALA TRP LYS SER THR LEU VAL GLY HIS ASP THR SEQRES 10 B 127 PHE THR LYS VAL LYS PRO SER ALA ALA SER SEQRES 1 C 127 ALA GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU SEQRES 2 C 127 GLY SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA SEQRES 3 C 127 LEU THR GLY THR TYR GLU SER ALA VAL GLY ASN ALA GLU SEQRES 4 C 127 SER ARG TYR VAL LEU THR GLY ARG TYR ASP SER ALA PRO SEQRES 5 C 127 ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP THR VAL SEQRES 6 C 127 ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER ALA THR SEQRES 7 C 127 THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU ALA ARG SEQRES 8 C 127 ILE ASN THR GLN PHE LEU LEU THR SER GLY THR THR GLU SEQRES 9 C 127 ALA ASN ALA TRP LYS SER THR LEU VAL GLY HIS ASP THR SEQRES 10 C 127 PHE THR LYS VAL LYS PRO SER ALA ALA SER SEQRES 1 D 127 ALA GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU SEQRES 2 D 127 GLY SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA SEQRES 3 D 127 LEU THR GLY THR TYR GLU SER ALA VAL GLY ASN ALA GLU SEQRES 4 D 127 SER ARG TYR VAL LEU THR GLY ARG TYR ASP SER ALA PRO SEQRES 5 D 127 ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP THR VAL SEQRES 6 D 127 ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER ALA THR SEQRES 7 D 127 THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU ALA ARG SEQRES 8 D 127 ILE ASN THR GLN PHE LEU LEU THR SER GLY THR THR GLU SEQRES 9 D 127 ALA ASN ALA TRP LYS SER THR LEU VAL GLY HIS ASP THR SEQRES 10 D 127 PHE THR LYS VAL LYS PRO SER ALA ALA SER

HET BTN A 300 16 HET BTN C 500 16 HET BTN D 600 16

HETNAM BTN BIOTIN

FORMUL 5 BTN 3(C10 H16 N2 O3 S) FORMUL 8 HOH *192(H2 O)

HELIX 1 1 ALA A 119 LYS A 121 5 3 HELIX 2 2 ALA B 50 SER B 52 5 3 HELIX 3 3 GLU B 116 LYS B 121 5 6 HELIX 4 4 ALA C 119 LYS C 121 5 3 HELIX 5 5 ALA D 119 LYS D 121 5 3

SHEET 1 A 8 GLY A 19 TYR A 22 0 SHEET 2 A 8 THR A 28 ALA A 33 -1 N VAL A 31 O GLY A 19 SHEET 3 A 8 ALA A 38 GLU A 44 -1 N GLU A 44 O THR A 28 SHEET 4 A 8 TYR A 54 TYR A 60 -1 N GLY A 58 O LEU A 39 SHEET 5 A 8 THR A 71 ALA A 78 -1 N THR A 76 O THR A 57 SHEET 6 A 8 SER A 88 VAL A 97 -1 N TYR A 96 O THR A 71 SHEET 7 A 8 ARG A 103 SER A 112 -1 N THR A 111 O ALA A 89 SHEET 8 A 8 THR A 123 THR A 131 -1 N PHE A 130 O ILE A 104 SHEET 1 B 8 GLY B 19 TYR B 22 0 SHEET 2 B 8 THR B 28 ALA B 33 -1 N VAL B 31 O GLY B 19 SHEET 3 B 8 ALA B 38 GLU B 44 -1 N GLU B 44 O THR B 28 SHEET 4 B 8 TYR B 54 TYR B 60 -1 N GLY B 58 O LEU B 39 SHEET 5 B 8 THR B 71 ALA B 78 -1 N THR B 76 O THR B 57 SHEET 6 B 8 SER B 88 VAL B 97 -1 N TYR B 96 O THR B 71 SHEET 7 B 8 ARG B 103 SER B 112 -1 N THR B 111 O ALA B 89 SHEET 8 B 8 THR B 123 THR B 131 -1 N PHE B 130 O ILE B 104 SHEET 1 C 8 GLY C 19 TYR C 22 0 SHEET 2 C 8 THR C 28 ALA C 33 -1 N VAL C 31 O GLY C 19 SHEET 3 C 8 ALA C 38 GLU C 44 -1 N GLU C 44 O THR C 28 SHEET 4 C 8 TYR C 54 TYR C 60 -1 N GLY C 58 O LEU C 39 SHEET 5 C 8 THR C 71 ALA C 78 -1 N THR C 76 O THR C 57 SHEET 6 C 8 SER C 88 VAL C 97 -1 N TYR C 96 O THR C 71 SHEET 7 C 8 ARG C 103 SER C 112 -1 N THR C 111 O ALA C 89 SHEET 8 C 8 THR C 123 THR C 131 -1 N PHE C 130 O ILE C 104 SHEET 1 D 8 GLY D 19 TYR D 22 0 SHEET 2 D 8 THR D 28 ALA D 33 -1 N VAL D 31 O GLY D 19 SHEET 3 D 8 ALA D 38 GLU D 44 -1 N GLU D 44 O THR D 28 SHEET 4 D 8 ARG D 53 TYR D 60 -1 N GLY D 58 O LEU D 39 SHEET 5 D 8 THR D 71 ALA D 78 -1 N THR D 76 O THR D 57 SHEET 6 D 8 SER D 88 VAL D 97 -1 N TYR D 96 O THR D 71 SHEET 7 D 8 ARG D 103 SER D 112 -1 N THR D 111 O ALA D 89 SHEET 8 D 8 THR D 123 PHE D 130 -1 N PHE D 130 O ILE D 104

SITE 1 AC1 11 ASN A 23 SER A 27 TYR A 43 SER A 45 SITE 2 AC1 11 VAL A 47 ASN A 49 TRP A 79 SER A 88 SITE 3 AC1 11 THR A 90 PHE A 108 ASP A 128 SITE 1 AC2 10 ASN C 23 SER C 27 TYR C 43 SER C 45 SITE 2 AC2 10 VAL C 47 ASN C 49 TRP C 79 SER C 88 SITE 3 AC2 10 ASP C 128 HOH C 390 SITE 1 AC3 10 ASN D 23 SER D 27 TYR D 43 SER D 45 SITE 2 AC3 10 VAL D 47 ASN D 49 TRP D 79 SER D 88 SITE 3 AC3 10 THR D 90 ASP D 128

CRYST1 59.600 88.700 48.000 90.00 98.80 90.00 P 1 21 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 0.016779 0.000000 0.002597 0.00000

SCALE2 0.000000 0.011274 0.000000 0.00000

SCALE3 0.000000 0.000000 0.021081 0.00000

MTRIX1 1 -0.001360 0.950731 0.310015 8.70670 1

MTRIX2 1 0.951321 -0.094317 0.293416 -15.79440 1

MTRIX3 1 0.308199 0.295323 -0.904322 20.33730 1

MTRIX1 2 -0.005810 -0.950961 -0.309257 15.48780 1

MTRIX2 2 -0.951517 -0.089855 0.294178 7.32800 1

MTRIX3 2 -0.307540 0.295973 -0.904333 27.85590 1

MTRIX1 3 -0.999997 -0.002391 0.000674 24.03270 1

MTRIX2 3 0.001550 -0.812422 -0.583068 6.55510 1

MTRIX3 3 0.001941 -0.583065 0.812423 2.15850 1

MTRIX1 4 -0.999974 -0.007168 -0.001176 24.16790 1

MTRIX2 4 0.006492 -0.809259 -0.587416 6.44540 1

MTRIX3 4 0.003259 -0.587408 0.809284 2.11260 1

MTRIX1 5 0.003407 -0.950309 -0.311291 15.32710 1

MTRIX2 5 -0.952563 -0.097818 0.288193 7.59380 1

MTRIX3 5 -0.304322 0.295542 -0.905562 27.79050 1

MTRIX1 6 0.003732 0.952906 0.303242 8.44680 1

MTRIX2 6 0.951947 -0.096251 0.290745 -15.49350 1

MTRIX3 6 0.306240 0.287585 -0.907475 20.45320 1