1JHZ - Header Asymmetric Unit

HEADER TRANSCRIPTION 28-JUN-01 1JHZ

TITLE PURINE REPRESSOR MUTANT COREPRESSOR BINDING DOMAIN STRUCTURE

COMPND MOL_ID: 1; COMPND 2 MOLECULE: PURINE NUCLEOTIDE SYNTHESIS REPRESSOR; COMPND 3 CHAIN: A, B; COMPND 4 FRAGMENT: COREPRESSOR-FREE COREPRESSOR BINDING DOMAIN COMPND 5 (RESIDUES 53-341); COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: PURR; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21 LAMBDA DE3; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET24A

KEYWDS COREPRESSOR BINDING DOMAIN, PURINE REPRESSOR, ALLOSTERIC KEYWDS 2 REGULATION, DNA-BINDING PROTEIN, PURINE BIOSYNTHESIS, KEYWDS 3 TRANSCRIPTION

EXPDTA X-RAY DIFFRACTION

AUTHOR J.L.HUFFMAN,F.LU,H.ZALKIN,R.G.BRENNAN

REVDAT 2 24-FEB-09 1JHZ 1 VERSN REVDAT 1 08-FEB-02 1JHZ 0

JRNL AUTH J.L.HUFFMAN,F.LU,H.ZALKIN,R.G.BRENNAN JRNL TITL ROLE OF RESIDUE 147 IN THE GENE REGULATORY JRNL TITL 2 FUNCTION OF THE ESCHERICHIA COLI PURINE REPRESSOR. JRNL REF BIOCHEMISTRY V. 41 511 2002 JRNL REFN ISSN 0006-2960 JRNL PMID 11781089 JRNL DOI 10.1021/BI0156660

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : TNT REMARK 3 AUTHORS : TRONRUD,TEN EYCK,MATTHEWS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 63009 REMARK 3 REMARK 3 USING DATA ABOVE SIGMA CUTOFF. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.178 REMARK 3 R VALUE (WORKING SET) : NULL 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 REMARK 3 USING ALL DATA, NO SIGMA CUTOFF. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 63009 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 4336 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 150 REMARK 3 REMARK 3 WILSON B VALUE (FROM FCALC, A**2) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. RMS WEIGHT COUNT REMARK 3 BOND LENGTHS (A) : 0.009 ; 1.500 ; 4424 REMARK 3 BOND ANGLES (DEGREES) : 1.018 ; 2.800 ; 5938 REMARK 3 TORSION ANGLES (DEGREES) : 20.358; 0.000 ; 2666 REMARK 3 PSEUDOROTATION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 TRIGONAL CARBON PLANES (A) : 0.002 ; 11.000; 114 REMARK 3 GENERAL PLANES (A) : 0.003 ; 11.000; 646 REMARK 3 ISOTROPIC THERMAL FACTORS (A**2) : 2.662 ; 5.500 ; 4424 REMARK 3 NON-BONDED CONTACTS (A) : 0.012 ; 36.000; 322 REMARK 3 REMARK 3 INCORRECT CHIRAL-CENTERS (COUNT) : 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 RESTRAINT LIBRARIES. REMARK 3 STEREOCHEMISTRY : ENGH & HUBER REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS : ISOTROPIC REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

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

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 02-JUL-01. REMARK 100 THE RCSB ID CODE IS RCSB013793.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-JUL-97 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 7.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.08 REMARK 200 MONOCHROMATOR : HORIZONTAL FOCUS SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20934 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 92.2 REMARK 200 DATA REDUNDANCY : 3.000 REMARK 200 R MERGE (I) : 0.07900 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 6.6400 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.46 REMARK 200 COMPLETENESS FOR SHELL (%) : 93.5 REMARK 200 DATA REDUNDANCY IN SHELL : 2.90 REMARK 200 R MERGE FOR SHELL (I) : 0.36900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: TNT REMARK 200 STARTING MODEL: 1DBQ REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.35 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.25 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 600, MAGNESIUM CHLORIDE, TRIS REMARK 280 HCL, PH 7.6, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K

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 63.06500 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 300 REMARK: THE BIOLOGICAL ASSEMBLY OF THE PURR COREPRESSOR BINDING REMARK 300 DOMAIN IS A HOMODIMER, WHICH IS CONTAINED WITHIN THE ASYMMETRIC REMARK 300 UNIT.

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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 3390 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24380 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -30.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 SER A 53 REMARK 465 LEU A 54 REMARK 465 LYS A 55 REMARK 465 VAL A 56 REMARK 465 ASN A 57 REMARK 465 HIS A 58 REMARK 465 THR A 59 REMARK 465 LEU A 188 REMARK 465 GLU A 189 REMARK 465 ARG A 190 REMARK 465 ASN A 191 REMARK 465 THR A 192 REMARK 465 GLY A 193 REMARK 465 SER B 53 REMARK 465 LEU B 54 REMARK 465 LYS B 55 REMARK 465 VAL B 56 REMARK 465 ASN B 57 REMARK 465 HIS B 58 REMARK 465 THR B 59 REMARK 465 LEU B 188 REMARK 465 GLU B 189 REMARK 465 ARG B 190 REMARK 465 ASN B 191 REMARK 465 THR B 192 REMARK 465 GLY B 193

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 PRO B 187 C - N - CD ANGL. DEV. = -14.1 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 TRP A 98 35.02 79.72 REMARK 500 ARG A 138 1.22 -65.37 REMARK 500 MET A 208 18.32 57.79 REMARK 500 PHE A 221 -22.78 93.46 REMARK 500 ASP A 275 -53.49 128.62 REMARK 500 ASN A 276 58.83 71.03 REMARK 500 VAL A 310 34.21 -98.00 REMARK 500 ARG A 313 62.19 35.84 REMARK 500 ARG A 328 -120.16 -126.95 REMARK 500 ASP A 338 47.86 168.50 REMARK 500 ARG A 340 -122.31 -170.93 REMARK 500 ALA B 66 -166.85 -105.81 REMARK 500 SER B 68 97.28 -164.38 REMARK 500 ALA B 72 -74.18 -68.58 REMARK 500 ALA B 75 -74.31 -32.90 REMARK 500 TRP B 98 46.97 -153.34 REMARK 500 LEU B 101 -36.08 -38.68 REMARK 500 LYS B 114 11.60 -64.61 REMARK 500 ASP B 117 55.41 -100.52 REMARK 500 TYR B 126 61.09 -154.50 REMARK 500 TYR B 137 37.61 -75.42 REMARK 500 GLU B 149 113.26 -32.03 REMARK 500 ALA B 152 77.12 -68.64 REMARK 500 PHE B 154 4.58 166.67 REMARK 500 PHE B 221 -11.54 84.77 REMARK 500 SER B 235 48.43 -99.03 REMARK 500 ASP B 275 -49.99 115.09 REMARK 500 ASN B 276 61.82 68.96 REMARK 500 PRO B 293 94.60 -53.18 REMARK 500 SER B 296 -35.13 -168.67 REMARK 500 ARG B 328 -127.41 -136.32 REMARK 500 PHE B 336 35.31 -95.68 REMARK 500 TYR B 339 106.78 168.35 REMARK 500 ARG B 340 144.15 86.67 REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 406 DISTANCE = 5.31 ANGSTROMS REMARK 525 HOH B 447 DISTANCE = 7.13 ANGSTROMS REMARK 525 HOH A 447 DISTANCE = 6.17 ANGSTROMS REMARK 525 HOH B 460 DISTANCE = 5.52 ANGSTROMS REMARK 525 HOH A 466 DISTANCE = 5.97 ANGSTROMS REMARK 525 HOH A 480 DISTANCE = 5.67 ANGSTROMS

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 MG A 402 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 464 O REMARK 620 2 GLU A 320 OE2 109.1 REMARK 620 3 GLU A 320 OE1 79.7 45.1 REMARK 620 N 1 2

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 401 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 402

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PNR RELATED DB: PDB REMARK 900 PURINE REPRESSOR-HYPOXANTHINE-PURF-OPERATOR COMPLEX REMARK 900 RELATED ID: 1QPZ RELATED DB: PDB REMARK 900 PURINE REPRESSOR-HYPOXANTHINE-PALINDROMIC OPERATOR COMPLEX REMARK 900 RELATED ID: 1JFS RELATED DB: PDB REMARK 900 PURINE REPRESSOR MUTANT-HYPOXANTHINE-PURF OPERATOR COMPLEX REMARK 900 (W147F) REMARK 900 RELATED ID: 1JFT RELATED DB: PDB REMARK 900 PURINE REPRESSOR MUTANT-HYPOXANTHINE-PURF OPERATOR COMPLEX REMARK 900 (W147A) REMARK 900 RELATED ID: 1JH9 RELATED DB: PDB REMARK 900 PURINE REPRESSOR MUTANT-HYPOXANTHINE-PURF OPERATOR COMPLEX REMARK 900 (W147R)

DBREF 1JHZ A 53 341 UNP P0ACP7 PURR_ECOLI 52 340 DBREF 1JHZ B 53 341 UNP P0ACP7 PURR_ECOLI 52 340

SEQADV 1JHZ PHE A 147 UNP P0ACP7 TRP 146 ENGINEERED SEQADV 1JHZ PHE B 147 UNP P0ACP7 TRP 146 ENGINEERED

SEQRES 1 A 289 SER LEU LYS VAL ASN HIS THR LYS SER ILE GLY LEU LEU SEQRES 2 A 289 ALA THR SER SER GLU ALA ALA TYR PHE ALA GLU ILE ILE SEQRES 3 A 289 GLU ALA VAL GLU LYS ASN CYS PHE GLN LYS GLY TYR THR SEQRES 4 A 289 LEU ILE LEU GLY ASN ALA TRP ASN ASN LEU GLU LYS GLN SEQRES 5 A 289 ARG ALA TYR LEU SER MET MET ALA GLN LYS ARG VAL ASP SEQRES 6 A 289 GLY LEU LEU VAL MET CYS SER GLU TYR PRO GLU PRO LEU SEQRES 7 A 289 LEU ALA MET LEU GLU GLU TYR ARG HIS ILE PRO MET VAL SEQRES 8 A 289 VAL MET ASP PHE GLY GLU ALA LYS ALA ASP PHE THR ASP SEQRES 9 A 289 ALA VAL ILE ASP ASN ALA PHE GLU GLY GLY TYR MET ALA SEQRES 10 A 289 GLY ARG TYR LEU ILE GLU ARG GLY HIS ARG GLU ILE GLY SEQRES 11 A 289 VAL ILE PRO GLY PRO LEU GLU ARG ASN THR GLY ALA GLY SEQRES 12 A 289 ARG LEU ALA GLY PHE MET LYS ALA MET GLU GLU ALA MET SEQRES 13 A 289 ILE LYS VAL PRO GLU SER TRP ILE VAL GLN GLY ASP PHE SEQRES 14 A 289 GLU PRO GLU SER GLY TYR ARG ALA MET GLN GLN ILE LEU SEQRES 15 A 289 SER GLN PRO HIS ARG PRO THR ALA VAL PHE CYS GLY GLY SEQRES 16 A 289 ASP ILE MET ALA MET GLY ALA LEU CYS ALA ALA ASP GLU SEQRES 17 A 289 MET GLY LEU ARG VAL PRO GLN ASP VAL SER LEU ILE GLY SEQRES 18 A 289 TYR ASP ASN VAL ARG ASN ALA ARG TYR PHE THR PRO ALA SEQRES 19 A 289 LEU THR THR ILE HIS GLN PRO LYS ASP SER LEU GLY GLU SEQRES 20 A 289 THR ALA PHE ASN MET LEU LEU ASP ARG ILE VAL ASN LYS SEQRES 21 A 289 ARG GLU GLU PRO GLN SER ILE GLU VAL HIS PRO ARG LEU SEQRES 22 A 289 ILE GLU ARG ARG SER VAL ALA ASP GLY PRO PHE ARG ASP SEQRES 23 A 289 TYR ARG ARG SEQRES 1 B 289 SER LEU LYS VAL ASN HIS THR LYS SER ILE GLY LEU LEU SEQRES 2 B 289 ALA THR SER SER GLU ALA ALA TYR PHE ALA GLU ILE ILE SEQRES 3 B 289 GLU ALA VAL GLU LYS ASN CYS PHE GLN LYS GLY TYR THR SEQRES 4 B 289 LEU ILE LEU GLY ASN ALA TRP ASN ASN LEU GLU LYS GLN SEQRES 5 B 289 ARG ALA TYR LEU SER MET MET ALA GLN LYS ARG VAL ASP SEQRES 6 B 289 GLY LEU LEU VAL MET CYS SER GLU TYR PRO GLU PRO LEU SEQRES 7 B 289 LEU ALA MET LEU GLU GLU TYR ARG HIS ILE PRO MET VAL SEQRES 8 B 289 VAL MET ASP PHE GLY GLU ALA LYS ALA ASP PHE THR ASP SEQRES 9 B 289 ALA VAL ILE ASP ASN ALA PHE GLU GLY GLY TYR MET ALA SEQRES 10 B 289 GLY ARG TYR LEU ILE GLU ARG GLY HIS ARG GLU ILE GLY SEQRES 11 B 289 VAL ILE PRO GLY PRO LEU GLU ARG ASN THR GLY ALA GLY SEQRES 12 B 289 ARG LEU ALA GLY PHE MET LYS ALA MET GLU GLU ALA MET SEQRES 13 B 289 ILE LYS VAL PRO GLU SER TRP ILE VAL GLN GLY ASP PHE SEQRES 14 B 289 GLU PRO GLU SER GLY TYR ARG ALA MET GLN GLN ILE LEU SEQRES 15 B 289 SER GLN PRO HIS ARG PRO THR ALA VAL PHE CYS GLY GLY SEQRES 16 B 289 ASP ILE MET ALA MET GLY ALA LEU CYS ALA ALA ASP GLU SEQRES 17 B 289 MET GLY LEU ARG VAL PRO GLN ASP VAL SER LEU ILE GLY SEQRES 18 B 289 TYR ASP ASN VAL ARG ASN ALA ARG TYR PHE THR PRO ALA SEQRES 19 B 289 LEU THR THR ILE HIS GLN PRO LYS ASP SER LEU GLY GLU SEQRES 20 B 289 THR ALA PHE ASN MET LEU LEU ASP ARG ILE VAL ASN LYS SEQRES 21 B 289 ARG GLU GLU PRO GLN SER ILE GLU VAL HIS PRO ARG LEU SEQRES 22 B 289 ILE GLU ARG ARG SER VAL ALA ASP GLY PRO PHE ARG ASP SEQRES 23 B 289 TYR ARG ARG

HET MG B 401 1 HET MG A 402 1 HET MG B 403 1

HETNAM MG MAGNESIUM ION

FORMUL 3 MG 3(MG 2+) FORMUL 6 HOH *150(H2 O)

HELIX 1 1 ALA A 71 LYS A 88 1 18 HELIX 2 2 ASN A 100 LYS A 114 1 15 HELIX 3 3 PRO A 127 TYR A 137 1 11 HELIX 4 4 ASN A 161 ARG A 176 1 16 HELIX 5 5 ALA A 194 ALA A 207 1 14 HELIX 6 6 PRO A 212 TRP A 215 5 4 HELIX 7 7 GLU A 222 SER A 235 1 14 HELIX 8 8 GLY A 247 MET A 261 1 15 HELIX 9 9 VAL A 277 PHE A 283 5 7 HELIX 10 10 PRO A 293 VAL A 310 1 18 HELIX 11 11 PHE B 74 LYS B 88 1 15 HELIX 12 12 ASN B 100 LYS B 114 1 15 HELIX 13 13 PRO B 127 TYR B 137 1 11 HELIX 14 14 ASN B 161 ARG B 176 1 16 HELIX 15 15 ALA B 194 ALA B 207 1 14 HELIX 16 16 PRO B 212 TRP B 215 5 4 HELIX 17 17 GLU B 222 SER B 235 1 14 HELIX 18 18 GLY B 247 MET B 261 1 15 HELIX 19 19 VAL B 277 PHE B 283 5 7 HELIX 20 20 SER B 296 VAL B 310 1 15

SHEET 1 A 8 SER A 318 GLU A 320 0 SHEET 2 A 8 ASP A 156 ILE A 159 1 O ALA A 157 N ILE A 319 SHEET 3 A 8 MET A 142 ASP A 146 1 O VAL A 144 N ASP A 156 SHEET 4 A 8 GLY A 118 MET A 122 1 O LEU A 119 N VAL A 143 SHEET 5 A 8 SER A 61 ALA A 66 1 O SER A 61 N GLY A 118 SHEET 6 A 8 THR A 91 ASN A 96 1 O THR A 91 N ILE A 62 SHEET 7 A 8 THR B 91 ASN B 96 -1 O LEU B 92 N LEU A 94 SHEET 8 A 8 SER B 61 ALA B 66 1 N ILE B 62 O THR B 91 SHEET 1 B 3 ILE A 181 ILE A 184 0 SHEET 2 B 3 ALA A 242 CYS A 245 1 O ALA A 242 N GLY A 182 SHEET 3 B 3 SER A 270 ILE A 272 1 O SER A 270 N VAL A 243 SHEET 1 C 2 THR A 289 HIS A 291 0 SHEET 2 C 2 ARG A 324 ILE A 326 -1 O ARG A 324 N HIS A 291 SHEET 1 D 4 VAL B 121 MET B 122 0 SHEET 2 D 4 VAL B 144 PHE B 147 1 N MET B 145 O VAL B 121 SHEET 3 D 4 ALA B 157 ILE B 159 1 N VAL B 158 O ASP B 146 SHEET 4 D 4 ILE B 319 GLU B 320 1 O ILE B 319 N ILE B 159 SHEET 1 E 5 ILE B 181 ILE B 184 0 SHEET 2 E 5 ALA B 242 CYS B 245 1 O ALA B 242 N GLY B 182 SHEET 3 E 5 SER B 270 ASP B 275 1 O SER B 270 N VAL B 243 SHEET 4 E 5 THR B 288 HIS B 291 1 O THR B 288 N GLY B 273 SHEET 5 E 5 ARG B 324 ILE B 326 -1 O ARG B 324 N HIS B 291

LINK MG MG A 402 O HOH A 464 1555 1555 1.75 LINK MG MG A 402 OE2 GLU A 320 1555 1555 3.09 LINK MG MG A 402 OE1 GLU A 320 1555 1555 2.36 LINK MG MG B 401 O HOH A 490 1555 1555 2.87

CISPEP 1 VAL A 265 PRO A 266 0 1.24 CISPEP 2 THR A 284 PRO A 285 0 0.29 CISPEP 3 VAL B 265 PRO B 266 0 1.38 CISPEP 4 THR B 284 PRO B 285 0 0.37

SITE 1 AC1 2 HOH A 490 GLU B 70 SITE 1 AC2 2 GLU A 320 HOH A 464

CRYST1 38.020 126.130 61.840 90.00 99.71 90.00 P 1 21 1 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 0.026302 0.000000 0.004501 0.00000

SCALE2 0.000000 0.007928 0.000000 0.00000

SCALE3 0.000000 0.000000 0.016406 0.00000