HEADER DNA BINDING PROTEIN 02-APR-26 12FK TITLE ANCESTRAL RECONSTRUCTION OF A HOMING ENDONUCLEASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: AHE31; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: DNA (5'- COMPND 7 D(P*GP*AP*AP*CP*CP*TP*TP*TP*GP*GP*TP*TP*AP*TP*GP*AP*GP*GP*AP*TP*CP*TP COMPND 8 *TP*C)-3'); COMPND 9 CHAIN: B; COMPND 10 ENGINEERED: YES; COMPND 11 MOL_ID: 3; COMPND 12 MOLECULE: DNA (5'- COMPND 13 D(P*TP*GP*AP*AP*GP*AP*TP*CP*CP*TP*CP*AP*TP*AP*AP*CP*CP*AP*AP*AP*GP*GP COMPND 14 *TP*T)-3'); COMPND 15 CHAIN: C; COMPND 16 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 3 ORGANISM_TAXID: 32630; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 8 ORGANISM_TAXID: 32630; SOURCE 9 EXPRESSION_SYSTEM: SYNTHETIC CONSTRUCT; SOURCE 10 EXPRESSION_SYSTEM_TAXID: 32630; SOURCE 11 MOL_ID: 3; SOURCE 12 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 13 ORGANISM_TAXID: 32630; SOURCE 14 EXPRESSION_SYSTEM: SYNTHETIC CONSTRUCT; SOURCE 15 EXPRESSION_SYSTEM_TAXID: 32630 KEYWDS RECONSTRUCTION, EVOLUTION, DNA BINDING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR L.A.DOYLE,B.STODDARD,J.C.YOUNG,M.SILVERSTEIN REVDAT 1 15-APR-26 12FK 0 JRNL AUTH B.STODDARD JRNL TITL ANCESTRAL HOMING ENDONUCLEASE RECONSTRUCTIONS JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 2.17 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 2.0_5885 REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.17 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 42.52 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.330 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 3 NUMBER OF REFLECTIONS : 21331 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.236 REMARK 3 R VALUE (WORKING SET) : 0.231 REMARK 3 FREE R VALUE : 0.287 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2134 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 42.5200 - 5.3500 0.99 1334 149 0.2273 0.2594 REMARK 3 2 5.3500 - 4.2500 0.98 1306 145 0.1897 0.2336 REMARK 3 3 4.2500 - 3.7100 0.99 1284 142 0.1925 0.2231 REMARK 3 4 3.7100 - 3.3700 0.97 1272 142 0.1865 0.2148 REMARK 3 5 3.3700 - 3.1300 0.98 1275 141 0.2106 0.2818 REMARK 3 6 3.1300 - 2.9500 0.99 1286 143 0.2321 0.2951 REMARK 3 7 2.9400 - 2.8000 0.99 1279 143 0.2537 0.3010 REMARK 3 8 2.8000 - 2.6800 0.98 1261 138 0.2570 0.3126 REMARK 3 9 2.6800 - 2.5700 0.97 1283 143 0.2519 0.3297 REMARK 3 10 2.5700 - 2.4800 0.99 1263 139 0.2705 0.3783 REMARK 3 11 2.4800 - 2.4100 1.00 1318 147 0.2660 0.3468 REMARK 3 12 2.4100 - 2.3400 0.99 1231 138 0.2795 0.3369 REMARK 3 13 2.3400 - 2.2800 0.99 1289 144 0.2805 0.3942 REMARK 3 14 2.2800 - 2.2200 0.99 1289 144 0.3013 0.3750 REMARK 3 15 2.2200 - 2.1700 0.96 1227 136 0.3054 0.3911 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.380 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 31.670 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 21.72 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.004 3563 REMARK 3 ANGLE : 0.624 5033 REMARK 3 CHIRALITY : 0.041 569 REMARK 3 PLANARITY : 0.004 471 REMARK 3 DIHEDRAL : 23.406 1439 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 12FK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 07-APR-26. REMARK 100 THE DEPOSITION ID IS D_1000306583. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-DEC-24 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 2M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS 0.7.4 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 21419 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.170 REMARK 200 RESOLUTION RANGE LOW (A) : 47.370 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.9 REMARK 200 DATA REDUNDANCY : 6.600 REMARK 200 R MERGE (I) : 0.25800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 6.2000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.17 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.24 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : 6.30 REMARK 200 R MERGE FOR SHELL (I) : 1.03100 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: PHASER 2.8.3 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.30 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.06 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M HEPES PH 7.5, 0.2 AMMONIUM REMARK 280 SULFATE, 28% PEG 3350 (W/V), VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 293K 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 23.68550 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 8660 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18050 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -83.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C 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 MET A -1 REMARK 465 GLY A 0 REMARK 465 PHE A 1 REMARK 465 ASN A 2 REMARK 465 SER A 3 REMARK 465 SER A 4 REMARK 465 THR A 5 REMARK 465 ASN A 6 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 LYS A 28 CG CD CE NZ REMARK 470 LYS A 30 CE NZ REMARK 470 LYS A 227 CG CD CE NZ 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 DA C 20 O4' - C1' - N9 ANGL. DEV. = 1.9 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 ASN A 29 115.74 -163.82 REMARK 500 ASN A 138 -111.73 54.19 REMARK 500 ASN A 164 -4.99 89.00 REMARK 500 ILE A 248 -59.63 -127.28 REMARK 500 HIS A 281 4.14 -68.70 REMARK 500 ASN A 298 -117.39 55.74 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 669 DISTANCE = 5.88 ANGSTROMS REMARK 525 HOH A 670 DISTANCE = 5.92 ANGSTROMS REMARK 525 HOH B 156 DISTANCE = 6.14 ANGSTROMS REMARK 525 HOH B 157 DISTANCE = 8.82 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 CA A 402 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ALA A 18 O REMARK 620 2 GLU A 179 OE2 100.3 REMARK 620 3 HOH A 514 O 88.5 101.5 REMARK 620 4 DT B 14 OP1 173.3 84.1 95.5 REMARK 620 5 HOH B 129 O 97.1 161.9 74.1 78.9 REMARK 620 6 DC C 16 OP2 79.8 101.6 155.6 94.5 86.2 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 401 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 19 OE2 REMARK 620 2 GLY A 178 O 90.4 REMARK 620 3 HOH A 534 O 83.2 90.3 REMARK 620 4 HOH A 593 O 170.6 84.1 89.2 REMARK 620 5 DG B 15 OP2 101.1 72.7 162.4 84.5 REMARK 620 6 DA C 15 OP1 95.4 173.6 93.0 90.5 103.5 REMARK 620 N 1 2 3 4 5 DBREF 12FK A -1 304 PDB 12FK 12FK -1 304 DBREF 12FK B 1 24 PDB 12FK 12FK 1 24 DBREF 12FK C 1 24 PDB 12FK 12FK 1 24 SEQRES 1 A 306 MET GLY PHE ASN SER SER THR ASN VAL ASN PRO TRP PHE SEQRES 2 A 306 TRP SER GLY LEU ILE ASP ALA GLU GLY SER PHE SER ILE SEQRES 3 A 306 ILE ILE ASP LYS ASN LYS THR ARG LYS LEU GLY TRP ARG SEQRES 4 A 306 VAL GLN LEU LYS PHE GLN ILE GLY LEU HIS THR ARG ASP SEQRES 5 A 306 LEU ASN LEU LEU TYR GLN LEU GLN GLN TYR LEU GLY GLY SEQRES 6 A 306 ILE GLY SER ILE HIS ILE ALA ARG ASN ARG ASN ARG VAL SEQRES 7 A 306 ASN TYR SER ILE ASP SER ILE LYS ASP LEU THR LYS LEU SEQRES 8 A 306 ILE ILE HIS LEU ASP LYS TYR PRO LEU LEU THR GLN LYS SEQRES 9 A 306 ALA ALA ASP PHE LEU LEU PHE LYS GLN ALA VAL GLU LEU SEQRES 10 A 306 ILE ASN ASN LYS ALA HIS LEU THR ILE GLU GLY LEU ASN SEQRES 11 A 306 GLN ILE VAL ASN ILE LYS ALA SER MET ASN LEU GLY LEU SEQRES 12 A 306 SER ASP MET LEU LYS SER GLU PHE ASN GLY TYR THR PRO SEQRES 13 A 306 VAL GLU ARG PRO VAL ILE ASN THR ASP ASN VAL ILE PRO SEQRES 14 A 306 ASP PRO HIS TRP ILE SER GLY PHE VAL SER GLY GLU GLY SEQRES 15 A 306 ASN PHE ASP VAL ARG ILE THR GLN THR THR THR LYS LEU SEQRES 16 A 306 GLY TYR ARG VAL GLN LEU ARG PHE ARG ILE THR GLN HIS SEQRES 17 A 306 SER ARG ASP LEU LYS LEU MET GLU ILE ILE VAL GLN TYR SEQRES 18 A 306 LEU GLY SER GLY LYS ILE TYR LYS TYR PRO PRO GLY LYS SEQRES 19 A 306 SER ALA VAL SER LEU THR ILE VAL ASN PHE SER ASP ILE SEQRES 20 A 306 THR ASN ILE ILE ILE PRO PHE PHE ASN GLU ASN PRO ILE SEQRES 21 A 306 LEU GLY VAL LYS LEU TYR ASP TYR LEU ASP TRP CYS LYS SEQRES 22 A 306 ILE HIS GLU LEU MET VAL ASN GLY SER HIS LEU THR VAL SEQRES 23 A 306 GLU GLY ILE ASN SER ILE ARG GLU ILE LYS SER GLY MET SEQRES 24 A 306 ASN THR GLY ARG LYS PHE ASP SEQRES 1 B 24 DG DA DA DC DC DT DT DT DG DG DT DT DA SEQRES 2 B 24 DT DG DA DG DG DA DT DC DT DT DC SEQRES 1 C 24 DC DG DA DA DG DA DT DC DC DT DC DA DT SEQRES 2 C 24 DA DA DC DC DA DA DA DG DG DT DT HET CA A 401 1 HET CA A 402 1 HETNAM CA CALCIUM ION FORMUL 4 CA 2(CA 2+) FORMUL 6 HOH *301(H2 O) HELIX 1 AA1 ASN A 8 GLU A 19 1 12 HELIX 2 AA2 ASP A 50 LEU A 61 1 12 HELIX 3 AA3 SER A 82 TYR A 96 1 15 HELIX 4 AA4 GLN A 101 ASN A 118 1 18 HELIX 5 AA5 LYS A 119 LEU A 122 5 4 HELIX 6 AA6 THR A 123 ALA A 135 1 13 HELIX 7 AA7 SER A 142 PHE A 149 1 8 HELIX 8 AA8 ASP A 168 GLU A 179 1 12 HELIX 9 AA9 ASP A 209 GLY A 221 1 13 HELIX 10 AB1 ASN A 241 ILE A 248 1 8 HELIX 11 AB2 ILE A 248 ASN A 256 1 9 HELIX 12 AB3 VAL A 261 ASN A 278 1 18 HELIX 13 AB4 GLY A 279 THR A 283 5 5 HELIX 14 AB5 GLY A 286 GLY A 296 1 11 HELIX 15 AB6 MET A 297 ARG A 301 5 5 SHEET 1 AA1 4 GLY A 20 LYS A 28 0 SHEET 2 AA1 4 TRP A 36 HIS A 47 -1 O GLN A 39 N ILE A 25 SHEET 3 AA1 4 ARG A 75 ILE A 80 -1 O TYR A 78 N ILE A 44 SHEET 4 AA1 4 SER A 66 ILE A 69 -1 N SER A 66 O SER A 79 SHEET 1 AA2 4 GLY A 180 GLN A 188 0 SHEET 2 AA2 4 TYR A 195 HIS A 206 -1 O ARG A 202 N ASN A 181 SHEET 3 AA2 4 ALA A 234 ILE A 239 -1 O LEU A 237 N ILE A 203 SHEET 4 AA2 4 LYS A 224 LYS A 227 -1 N LYS A 224 O THR A 238 LINK O ALA A 18 CA CA A 402 1555 1555 2.42 LINK OE2 GLU A 19 CA CA A 401 1555 1555 2.41 LINK O GLY A 178 CA CA A 401 1555 1555 2.37 LINK OE2 GLU A 179 CA CA A 402 1555 1555 2.43 LINK CA CA A 401 O HOH A 534 1555 1555 2.30 LINK CA CA A 401 O HOH A 593 1555 1555 2.32 LINK CA CA A 401 OP2 DG B 15 1555 1555 2.34 LINK CA CA A 401 OP1 DA C 15 1555 1555 2.36 LINK CA CA A 402 O HOH A 514 1555 1555 2.36 LINK CA CA A 402 OP1 DT B 14 1555 1555 2.23 LINK CA CA A 402 O HOH B 129 1555 1555 2.39 LINK CA CA A 402 OP2 DC C 16 1555 1555 2.31 CRYST1 58.453 47.371 74.737 90.00 98.65 90.00 P 1 21 1 2 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 0.017108 0.000000 0.002603 0.00000 SCALE2 0.000000 0.021110 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013534 0.00000 CONECT 99 3396 CONECT 109 3395 CONECT 1378 3395 CONECT 1387 3396 CONECT 2677 3396 CONECT 2698 3395 CONECT 3189 3395 CONECT 3211 3396 CONECT 3395 109 1378 2698 3189 CONECT 3395 3430 3489 CONECT 3396 99 1387 2677 3211 CONECT 3396 3410 3595 CONECT 3410 3396 CONECT 3430 3395 CONECT 3489 3395 CONECT 3595 3396 MASTER 307 0 2 15 8 0 0 6 3682 3 16 28 END