HEADER HYDROLASE/DNA 20-MAR-19 6OBJ TITLE STRUCTURE OF A DNA-BOUND DIMER EXTRACTED FROM FILAMENTOUS SGRAI TITLE 2 ENDONUCLEASE IN ITS ACTIVATED FORM COMPND MOL_ID: 1; COMPND 2 MOLECULE: SGRAIR RESTRICTION ENZYME; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: SGRAI; COMPND 5 EC: 3.1.21.-; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: DNA (26-MER); COMPND 9 CHAIN: C, D; COMPND 10 ENGINEERED: YES; COMPND 11 OTHER_DETAILS: ASSEMBLED FROM PRE-CLEAVED DNAS SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOMYCES GRISEUS; SOURCE 3 ORGANISM_TAXID: 1911; SOURCE 4 GENE: SGRAIR; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 MOL_ID: 2; SOURCE 8 SYNTHETIC: YES; SOURCE 9 ORGANISM_SCIENTIFIC: STREPTOMYCES GRISEUS; SOURCE 10 ORGANISM_TAXID: 1911 KEYWDS RESTRICTION ENDONUCLEASE, DNASE, ALLOSTERY, BACTERIAL INNATE KEYWDS 2 IMMUNITY, FILAMENT, HYPER-ACTIVATION, SUBSTRATE SPECIFICITY, KEYWDS 3 HYDROLASE-DNA COMPLEX EXPDTA ELECTRON MICROSCOPY AUTHOR S.POLLEY,D.LYUMKIS,N.C.HORTON REVDAT 3 20-MAR-24 6OBJ 1 REMARK REVDAT 2 09-SEP-20 6OBJ 1 JRNL LINK REVDAT 1 26-FEB-20 6OBJ 0 JRNL AUTH S.POLLEY,D.LYUMKIS,N.C.HORTON JRNL TITL MECHANISM OF FILAMENTATION-INDUCED ALLOSTERIC ACTIVATION OF JRNL TITL 2 THE SGRAI ENDONUCLEASE. JRNL REF STRUCTURE V. 27 1497 2019 JRNL REFN ISSN 0969-2126 JRNL PMID 31447289 JRNL DOI 10.1016/J.STR.2019.08.001 REMARK 2 REMARK 2 RESOLUTION. 3.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : FINDEM, LEGINON, CTFFIND, COOT, PHENIX, REMARK 3 RELION, RELION, RELION, RELION REMARK 3 RECONSTRUCTION SCHEMA : FOURIER SPACE REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : AB INITIO MODEL REMARK 3 REFINEMENT TARGET : CORRELATION COEFFICIENT REMARK 3 OVERALL ANISOTROPIC B VALUE : NULL REMARK 3 REMARK 3 FITTING PROCEDURE : NULL REMARK 3 REMARK 3 EM IMAGE RECONSTRUCTION STATISTICS REMARK 3 NOMINAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 ACTUAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 EFFECTIVE RESOLUTION (ANGSTROMS) : 3.500 REMARK 3 NUMBER OF PARTICLES : 7 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING AND AMPLITUDE REMARK 3 CORRECTION REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 6OBJ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 21-MAR-19. REMARK 100 THE DEPOSITION ID IS D_1000240391. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : HELICAL REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : FILAMENT REMARK 245 PARTICLE TYPE : HELICAL REMARK 245 NAME OF SAMPLE : FILAMENTOUS ASSEMBLY OF SGRAI REMARK 245 PROTEIN BOUND TO PRE-CLEAVED DNA REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 1.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 8.00 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 216 REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : FEI TITAN KRIOS REMARK 245 DETECTOR TYPE : GATAN K2 SUMMIT (4K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 600.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2600.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : 2.70 REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 5500.00 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : 22500 REMARK 245 CALIBRATED MAGNIFICATION : 38167 REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 300 REMARK 245 IMAGING DETAILS : NULL REMARK 247 REMARK 247 ELECTRON MICROSCOPY REMARK 247 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM ELECTRON REMARK 247 MICROSCOPY DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE REMARK 247 THAT CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES REMARK 247 ON THESE RECORDS ARE MEANINGLESS EXCEPT FOR THE CALCULATION REMARK 247 OF THE STRUCTURE FACTORS. 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 THE ASSEMBLY REPRESENTED IN THIS ENTRY HAS REGULAR REMARK 300 HELICAL SYMMETRY WITH THE FOLLOWING PARAMETERS: REMARK 300 ROTATION PER SUBUNIT (TWIST) = -86.20 DEGREES REMARK 300 RISE PER SUBUNIT (HEIGHT) = 21.60 ANGSTROMS 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 APPLY THE FOLLOWING TO CHAINS: A, C, B, 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 350 BIOMT1 2 -0.991216 -0.132256 0.000000 355.01300 REMARK 350 BIOMT2 2 0.132256 -0.991216 0.000000 312.06800 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 -43.20000 REMARK 350 BIOMT1 3 0.066274 -0.997801 0.000000 323.52100 REMARK 350 BIOMT2 3 0.997801 0.066274 0.000000 -10.07370 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 -21.60000 REMARK 350 BIOMT1 4 0.066274 0.997801 0.000000 -11.38940 REMARK 350 BIOMT2 4 -0.997801 0.066274 0.000000 323.47700 REMARK 350 BIOMT3 4 0.000000 0.000000 1.000000 21.60000 REMARK 350 BIOMT1 5 -0.991216 0.132256 0.000000 310.62200 REMARK 350 BIOMT2 5 -0.132256 -0.991216 0.000000 356.28000 REMARK 350 BIOMT3 5 0.000000 0.000000 1.000000 43.20000 REMARK 350 BIOMT1 6 -0.197657 -0.980271 0.000000 364.69300 REMARK 350 BIOMT2 6 0.980271 -0.197657 0.000000 37.15040 REMARK 350 BIOMT3 6 0.000000 0.000000 1.000000 64.80000 REMARK 350 BIOMT1 7 0.965016 -0.262189 0.000000 49.84890 REMARK 350 BIOMT2 7 0.262189 0.965016 0.000000 -37.95200 REMARK 350 BIOMT3 7 0.000000 0.000000 1.000000 86.40000 REMARK 350 BIOMT1 8 0.325568 0.945519 0.000000 -45.95430 REMARK 350 BIOMT2 8 -0.945519 0.325568 0.000000 271.22300 REMARK 350 BIOMT3 8 0.000000 0.000000 1.000000 108.00000 REMARK 350 BIOMT1 9 -0.921863 0.387516 0.000000 256.19100 REMARK 350 BIOMT2 9 -0.387516 -0.921863 0.000000 387.30500 REMARK 350 BIOMT3 9 0.000000 0.000000 1.000000 129.60000 REMARK 350 BIOMT1 10 -0.447759 -0.894154 0.000000 392.04300 REMARK 350 BIOMT2 10 0.894154 -0.447759 0.000000 93.51730 REMARK 350 BIOMT3 10 0.000000 0.000000 1.000000 151.20000 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 A 1 REMARK 465 DG C -6 REMARK 465 DA C -5 REMARK 465 DT C -4 REMARK 465 DG C -3 REMARK 465 DC C -2 REMARK 465 DG C -1 REMARK 465 DT C 0 REMARK 465 DA C 27 REMARK 465 DC C 28 REMARK 465 DG C 29 REMARK 465 DC C 30 REMARK 465 DA C 31 REMARK 465 DT C 32 REMARK 465 DC C 33 REMARK 465 MET B 1 REMARK 465 DG D -6 REMARK 465 DA D -5 REMARK 465 DT D -4 REMARK 465 DG D -3 REMARK 465 DC D -2 REMARK 465 DG D -1 REMARK 465 DT D 0 REMARK 465 DA D 27 REMARK 465 DC D 28 REMARK 465 DG D 29 REMARK 465 DC D 30 REMARK 465 DA D 31 REMARK 465 DT D 32 REMARK 465 DC D 33 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 TRP A 126 O REMARK 470 DC C 12 P OP1 OP2 REMARK 470 TRP B 126 O REMARK 470 DC D 12 P OP1 OP2 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 5 70.39 58.91 REMARK 500 ALA A 26 86.96 -154.64 REMARK 500 ARG A 29 -10.52 71.79 REMARK 500 ASN A 30 -37.67 -132.05 REMARK 500 SER A 32 58.79 -90.67 REMARK 500 SER A 56 71.59 57.85 REMARK 500 ASP A 85 -11.19 72.34 REMARK 500 THR A 136 52.00 -93.36 REMARK 500 ARG A 142 49.18 -90.91 REMARK 500 PRO A 151 -166.62 -73.87 REMARK 500 TRP A 156 -3.83 62.47 REMARK 500 ASN A 215 47.30 -93.24 REMARK 500 GLN A 216 -38.43 -130.22 REMARK 500 ASN A 286 57.96 -96.46 REMARK 500 GLU A 301 52.56 -93.03 REMARK 500 LEU A 336 31.38 -91.75 REMARK 500 TYR B 5 70.44 58.93 REMARK 500 ALA B 26 87.00 -154.58 REMARK 500 ARG B 29 -10.44 71.67 REMARK 500 ASN B 30 -37.63 -132.09 REMARK 500 SER B 32 58.81 -90.69 REMARK 500 SER B 56 71.63 57.86 REMARK 500 ASP B 85 -11.22 72.30 REMARK 500 THR B 136 52.00 -93.35 REMARK 500 ARG B 142 49.17 -90.88 REMARK 500 PRO B 151 -166.59 -73.88 REMARK 500 TRP B 156 -3.86 62.48 REMARK 500 ASN B 215 47.29 -93.26 REMARK 500 GLN B 216 -38.42 -130.16 REMARK 500 ASN B 286 57.93 -96.44 REMARK 500 GLU B 301 52.59 -93.03 REMARK 500 LEU B 336 31.36 -91.73 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 MG A 500 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 PHE A 241 O REMARK 620 2 DC C 13 OP2 72.0 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG B 500 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 PHE B 241 O REMARK 620 2 DC D 13 OP2 72.0 REMARK 620 N 1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 500 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG B 500 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-20015 RELATED DB: EMDB REMARK 900 STRUCTURE OF A DNA-BOUND DIMER EXTRACTED FROM FILAMENTOUS SGRAI REMARK 900 ENDONUCLEASE IN ITS ACTIVATED FORM DBREF 6OBJ A 1 339 UNP Q9F6L0 Q9F6L0_STRGR 1 339 DBREF 6OBJ C -6 33 PDB 6OBJ 6OBJ -6 33 DBREF 6OBJ B 1 339 UNP Q9F6L0 Q9F6L0_STRGR 1 339 DBREF 6OBJ D -6 33 PDB 6OBJ 6OBJ -6 33 SEQADV 6OBJ ASP A 63 UNP Q9F6L0 ASN 63 ENGINEERED MUTATION SEQADV 6OBJ ASP B 63 UNP Q9F6L0 ASN 63 ENGINEERED MUTATION SEQRES 1 A 339 MET PRO PHE THR TYR SER ILE GLU ALA THR ARG ASN LEU SEQRES 2 A 339 ALA THR THR GLU ARG CYS ILE GLN ASP ILE ARG ASN ALA SEQRES 3 A 339 PRO VAL ARG ASN ARG SER THR GLN PHE GLN LEU ALA GLN SEQRES 4 A 339 GLN ASN MET LEU ALA TYR THR PHE GLY GLU VAL ILE PRO SEQRES 5 A 339 GLY PHE ALA SER ALA GLY ILE ASN GLY MET ASP TYR ARG SEQRES 6 A 339 ASP VAL ILE GLY ARG PRO VAL GLU ASN ALA VAL THR GLU SEQRES 7 A 339 GLY THR HIS PHE PHE ARG ASP ASP PHE ARG VAL ASP SER SEQRES 8 A 339 ASN ALA LYS ALA LYS VAL ALA GLY ASP ILE PHE GLU ILE SEQRES 9 A 339 VAL SER SER ALA VAL MET TRP ASN CYS ALA ALA ARG TRP SEQRES 10 A 339 ASN SER LEU MET VAL GLY GLU GLY TRP ARG SER GLN PRO SEQRES 11 A 339 ARG TYR SER ARG PRO THR LEU SER PRO SER PRO ARG ARG SEQRES 12 A 339 GLN VAL ALA VAL LEU ASN LEU PRO ARG SER PHE ASP TRP SEQRES 13 A 339 VAL SER LEU LEU VAL PRO GLU SER GLN GLU VAL ILE GLU SEQRES 14 A 339 GLU PHE ARG ALA GLY LEU ARG LYS ASP GLY LEU GLY LEU SEQRES 15 A 339 PRO THR SER THR PRO ASP LEU ALA VAL VAL VAL LEU PRO SEQRES 16 A 339 GLU GLU PHE GLN ASN ASP GLU MET TRP ARG GLU GLU ILE SEQRES 17 A 339 ALA GLY LEU THR ARG PRO ASN GLN ILE LEU LEU SER GLY SEQRES 18 A 339 ALA TYR GLN ARG LEU GLN GLY ARG VAL GLN PRO GLY GLU SEQRES 19 A 339 ILE SER LEU ALA VAL ALA PHE LYS ARG SER LEU ARG SER SEQRES 20 A 339 ASP ARG LEU TYR GLN PRO LEU TYR GLU ALA ASN VAL MET SEQRES 21 A 339 GLN LEU LEU LEU GLU GLY LYS LEU GLY ALA PRO LYS VAL SEQRES 22 A 339 GLU PHE GLU VAL HIS THR LEU ALA PRO GLU GLY THR ASN SEQRES 23 A 339 ALA PHE VAL THR TYR GLU ALA ALA SER LEU TYR GLY LEU SEQRES 24 A 339 ALA GLU GLY ARG SER ALA VAL HIS ARG ALA ILE ARG GLU SEQRES 25 A 339 LEU TYR VAL PRO PRO THR ALA ALA ASP LEU ALA ARG ARG SEQRES 26 A 339 PHE PHE ALA PHE LEU ASN GLU ARG MET GLU LEU VAL ASN SEQRES 27 A 339 GLY SEQRES 1 C 40 DG DA DT DG DC DG DT DG DG DG DT DC DT SEQRES 2 C 40 DT DC DA DC DA DC DC DG DG DT DG DT DG SEQRES 3 C 40 DA DA DG DA DC DC DC DA DC DG DC DA DT SEQRES 4 C 40 DC SEQRES 1 B 339 MET PRO PHE THR TYR SER ILE GLU ALA THR ARG ASN LEU SEQRES 2 B 339 ALA THR THR GLU ARG CYS ILE GLN ASP ILE ARG ASN ALA SEQRES 3 B 339 PRO VAL ARG ASN ARG SER THR GLN PHE GLN LEU ALA GLN SEQRES 4 B 339 GLN ASN MET LEU ALA TYR THR PHE GLY GLU VAL ILE PRO SEQRES 5 B 339 GLY PHE ALA SER ALA GLY ILE ASN GLY MET ASP TYR ARG SEQRES 6 B 339 ASP VAL ILE GLY ARG PRO VAL GLU ASN ALA VAL THR GLU SEQRES 7 B 339 GLY THR HIS PHE PHE ARG ASP ASP PHE ARG VAL ASP SER SEQRES 8 B 339 ASN ALA LYS ALA LYS VAL ALA GLY ASP ILE PHE GLU ILE SEQRES 9 B 339 VAL SER SER ALA VAL MET TRP ASN CYS ALA ALA ARG TRP SEQRES 10 B 339 ASN SER LEU MET VAL GLY GLU GLY TRP ARG SER GLN PRO SEQRES 11 B 339 ARG TYR SER ARG PRO THR LEU SER PRO SER PRO ARG ARG SEQRES 12 B 339 GLN VAL ALA VAL LEU ASN LEU PRO ARG SER PHE ASP TRP SEQRES 13 B 339 VAL SER LEU LEU VAL PRO GLU SER GLN GLU VAL ILE GLU SEQRES 14 B 339 GLU PHE ARG ALA GLY LEU ARG LYS ASP GLY LEU GLY LEU SEQRES 15 B 339 PRO THR SER THR PRO ASP LEU ALA VAL VAL VAL LEU PRO SEQRES 16 B 339 GLU GLU PHE GLN ASN ASP GLU MET TRP ARG GLU GLU ILE SEQRES 17 B 339 ALA GLY LEU THR ARG PRO ASN GLN ILE LEU LEU SER GLY SEQRES 18 B 339 ALA TYR GLN ARG LEU GLN GLY ARG VAL GLN PRO GLY GLU SEQRES 19 B 339 ILE SER LEU ALA VAL ALA PHE LYS ARG SER LEU ARG SER SEQRES 20 B 339 ASP ARG LEU TYR GLN PRO LEU TYR GLU ALA ASN VAL MET SEQRES 21 B 339 GLN LEU LEU LEU GLU GLY LYS LEU GLY ALA PRO LYS VAL SEQRES 22 B 339 GLU PHE GLU VAL HIS THR LEU ALA PRO GLU GLY THR ASN SEQRES 23 B 339 ALA PHE VAL THR TYR GLU ALA ALA SER LEU TYR GLY LEU SEQRES 24 B 339 ALA GLU GLY ARG SER ALA VAL HIS ARG ALA ILE ARG GLU SEQRES 25 B 339 LEU TYR VAL PRO PRO THR ALA ALA ASP LEU ALA ARG ARG SEQRES 26 B 339 PHE PHE ALA PHE LEU ASN GLU ARG MET GLU LEU VAL ASN SEQRES 27 B 339 GLY SEQRES 1 D 40 DG DA DT DG DC DG DT DG DG DG DT DC DT SEQRES 2 D 40 DT DC DA DC DA DC DC DG DG DT DG DT DG SEQRES 3 D 40 DA DA DG DA DC DC DC DA DC DG DC DA DT SEQRES 4 D 40 DC HET MG A 500 1 HET MG B 500 1 HETNAM MG MAGNESIUM ION FORMUL 5 MG 2(MG 2+) HELIX 1 AA1 GLU A 8 LEU A 13 1 6 HELIX 2 AA2 ALA A 38 PHE A 47 1 10 HELIX 3 AA3 SER A 56 GLY A 61 1 6 HELIX 4 AA4 ASP A 63 ILE A 68 1 6 HELIX 5 AA5 GLY A 69 PHE A 83 1 15 HELIX 6 AA6 ASN A 92 VAL A 122 1 31 HELIX 7 AA7 SER A 140 ARG A 143 5 4 HELIX 8 AA8 TRP A 156 LEU A 160 5 5 HELIX 9 AA9 VAL A 161 ARG A 176 1 16 HELIX 10 AB1 LYS A 177 GLY A 179 5 3 HELIX 11 AB2 PRO A 195 GLN A 199 5 5 HELIX 12 AB3 ASP A 201 ARG A 205 5 5 HELIX 13 AB4 ARG A 213 LEU A 218 1 6 HELIX 14 AB5 TYR A 223 GLN A 227 5 5 HELIX 15 AB6 GLN A 231 GLY A 233 5 3 HELIX 16 AB7 PRO A 253 LEU A 264 1 12 HELIX 17 AB8 ASN A 286 TYR A 291 1 6 HELIX 18 AB9 ALA A 319 MET A 334 1 16 HELIX 19 AC1 GLU A 335 VAL A 337 5 3 HELIX 20 AC2 GLU B 8 LEU B 13 1 6 HELIX 21 AC3 ALA B 38 PHE B 47 1 10 HELIX 22 AC4 SER B 56 GLY B 61 1 6 HELIX 23 AC5 ASP B 63 ILE B 68 1 6 HELIX 24 AC6 GLY B 69 PHE B 83 1 15 HELIX 25 AC7 ASN B 92 VAL B 122 1 31 HELIX 26 AC8 SER B 140 ARG B 143 5 4 HELIX 27 AC9 TRP B 156 LEU B 160 5 5 HELIX 28 AD1 VAL B 161 ARG B 176 1 16 HELIX 29 AD2 LYS B 177 GLY B 179 5 3 HELIX 30 AD3 PRO B 195 GLN B 199 5 5 HELIX 31 AD4 ASP B 201 ARG B 205 5 5 HELIX 32 AD5 ARG B 213 LEU B 218 1 6 HELIX 33 AD6 TYR B 223 GLN B 227 5 5 HELIX 34 AD7 GLN B 231 GLY B 233 5 3 HELIX 35 AD8 PRO B 253 LEU B 264 1 12 HELIX 36 AD9 ASN B 286 TYR B 291 1 6 HELIX 37 AE1 ALA B 319 MET B 334 1 16 HELIX 38 AE2 GLU B 335 VAL B 337 5 3 SHEET 1 AA1 2 ILE A 20 ASP A 22 0 SHEET 2 AA1 2 PHE A 35 LEU A 37 -1 O GLN A 36 N GLN A 21 SHEET 1 AA2 5 VAL A 145 ASN A 149 0 SHEET 2 AA2 5 LEU A 189 VAL A 193 -1 O VAL A 192 N ALA A 146 SHEET 3 AA2 5 ILE A 235 PHE A 241 -1 O LEU A 237 N VAL A 191 SHEET 4 AA2 5 GLU A 274 HIS A 278 1 O GLU A 276 N ALA A 240 SHEET 5 AA2 5 LEU A 313 TYR A 314 1 O TYR A 314 N VAL A 277 SHEET 1 AA3 2 ILE B 20 ASP B 22 0 SHEET 2 AA3 2 PHE B 35 LEU B 37 -1 O GLN B 36 N GLN B 21 SHEET 1 AA4 5 VAL B 145 ASN B 149 0 SHEET 2 AA4 5 LEU B 189 VAL B 193 -1 O VAL B 192 N ALA B 146 SHEET 3 AA4 5 ILE B 235 PHE B 241 -1 O LEU B 237 N VAL B 191 SHEET 4 AA4 5 GLU B 274 HIS B 278 1 O GLU B 276 N ALA B 240 SHEET 5 AA4 5 LEU B 313 TYR B 314 1 O TYR B 314 N VAL B 277 LINK O PHE A 241 MG MG A 500 1555 1555 2.74 LINK MG MG A 500 OP2 DC C 13 1555 1555 2.97 LINK O PHE B 241 MG MG B 500 1555 1555 2.74 LINK MG MG B 500 OP2 DC D 13 1555 1555 2.97 SITE 1 AC1 6 ASP A 188 PHE A 241 LYS A 242 DA C 11 SITE 2 AC1 6 DC C 12 DC C 13 SITE 1 AC2 6 ASP B 188 PHE B 241 LYS B 242 DA D 11 SITE 2 AC2 6 DC D 12 DC D 13 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000