PDB Short entry for 1K61 HEADER TRANSCRIPTION/DNA 14-OCT-01 1K61 TITLE MATALPHA2 HOMEODOMAIN BOUND TO DNA COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-D(*AP*CP*AP*TP*GP*TP*AP*AP*TP*TP*CP*AP*TP*TP*TP*AP*CP*AP COMPND 3 *CP*GP*C)-3'; COMPND 4 CHAIN: E; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: 5'-D(*(5IU) COMPND 8 P*GP*CP*GP*TP*GP*TP*AP*AP*AP*TP*GP*AP*AP*TP*TP*AP*CP*AP*TP*G)-3'; COMPND 9 CHAIN: F; COMPND 10 ENGINEERED: YES; COMPND 11 MOL_ID: 3; COMPND 12 MOLECULE: MATING-TYPE PROTEIN ALPHA-2; COMPND 13 CHAIN: A, B, C, D; COMPND 14 FRAGMENT: RESIDUES 132-191, HOMEODOMAIN; COMPND 15 SYNONYM: ALPHA-2 REPRESSOR; COMPND 16 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE IS DERIVED FROM THE STE6 PROMOTER SOURCE 4 REGION, WITH THE MCM1 BINDING SITES REMOVED.; SOURCE 5 MOL_ID: 2; SOURCE 6 SYNTHETIC: YES; SOURCE 7 OTHER_DETAILS: THIS SEQUENCE IS DERIVED FROM THE STE6 PROMOTER SOURCE 8 REGION, WITH THE MCM1 BINDING SITES REMOVED.; SOURCE 9 MOL_ID: 3; SOURCE 10 SYNTHETIC: YES; SOURCE 11 OTHER_DETAILS: THE SEQUENCE NATURALLY OCCURS IN YEAST. THE PROTEIN SOURCE 12 WAS SYNTHESIZED BY THE FMOC METHOD. KEYWDS PROTEIN-DNA COMPLEX, HOMEODOMAIN, HOOGSTEEN BASE PAIR, TRANSCRIPTION- KEYWDS 2 DNA COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.AISHIMA,R.K.GITTI,J.E.NOAH,H.H.GAN,T.SCHLICK,C.WOLBERGER REVDAT 3 16-AUG-23 1K61 1 REMARK LINK REVDAT 2 24-FEB-09 1K61 1 VERSN REVDAT 1 11-DEC-02 1K61 0 JRNL AUTH J.AISHIMA,R.K.GITTI,J.E.NOAH,H.H.GAN,T.SCHLICK,C.WOLBERGER JRNL TITL A HOOGSTEEN BASE PAIR EMBEDDED IN UNDISTORTED B-DNA JRNL REF NUCLEIC ACIDS RES. V. 30 5244 2002 JRNL REFN ISSN 0305-1048 JRNL PMID 12466549 JRNL DOI 10.1093/NAR/GKF661 REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 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 : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 16.01 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 23852424.020 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 96.6 REMARK 3 NUMBER OF REFLECTIONS : 20065 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.221 REMARK 3 FREE R VALUE : 0.277 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.800 REMARK 3 FREE R VALUE TEST SET COUNT : 1976 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.006 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.23 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 93.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2921 REMARK 3 BIN R VALUE (WORKING SET) : 0.2600 REMARK 3 BIN FREE R VALUE : 0.3480 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 9.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 312 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.020 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1911 REMARK 3 NUCLEIC ACID ATOMS : 855 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 195 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 33.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.70 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 7.33000 REMARK 3 B22 (A**2) : -1.09000 REMARK 3 B33 (A**2) : -6.23000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 4.57000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.28 REMARK 3 ESD FROM SIGMAA (A) : 0.21 REMARK 3 LOW RESOLUTION CUTOFF (A) : 20.0 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.38 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.33 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.100 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 17.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.110 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.400 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.190 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.930 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.710 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.33 REMARK 3 BSOL : 44.82 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : I_DNA-RNA.PARAM REMARK 3 PARAMETER FILE 3 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : I_DNA-RNA.TOP REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 REFINEMENT TARGET VALUES FOR THE DNA AS DESCRIBED IN: REMARK 3 G.PARKINSON, J.VOJTECHOVSKY, L.CLOWNEY, A.T.BRUNGER, H.M.BERMAN, REMARK 3 NEW PARAMETERS FOR THE REFINEMENT OF NUCLEIC ACID CONTAINING REMARK 3 STRUCTURES, REMARK 3 ACTA CRYST. D, 52, 57-64 (1996). REMARK 3 MODIFIED FOR 5-IODOURACIL RESIDUE. REMARK 4 REMARK 4 1K61 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-NOV-01. REMARK 100 THE DEPOSITION ID IS D_1000014604. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 24-JUN-98 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 9.0 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : YALE MIRRORS REMARK 200 OPTICS : YALE MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 23014 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 16.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.5 REMARK 200 DATA REDUNDANCY : 2.070 REMARK 200 R MERGE (I) : 0.04800 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 14.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 81.0 REMARK 200 DATA REDUNDANCY IN SHELL : 2.30 REMARK 200 R MERGE FOR SHELL (I) : 0.28700 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.500 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR AND MOLECULAR REMARK 200 REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 1APL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.20 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.09 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 6000, BICINE, PH 9.0, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 291K 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 35.12000 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: HEXAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: E, F, 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 THR B 191 REMARK 465 ARG C 132 REMARK 465 GLY C 133 REMARK 465 ILE C 190 REMARK 465 THR C 191 REMARK 465 ILE D 190 REMARK 465 THR D 191 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 ARG A 132 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 138 CG CD CE NZ REMARK 470 ARG A 142 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 167 CG CD CE NZ REMARK 470 LYS A 188 CG CD CE NZ REMARK 470 THR A 191 OG1 CG2 REMARK 470 ARG B 132 CG CD NE CZ NH1 NH2 REMARK 470 LYS B 138 CG CD CE NZ REMARK 470 LYS B 160 CG CD CE NZ REMARK 470 ILE B 190 CG1 CG2 CD1 REMARK 470 HIS C 134 CG ND1 CD2 CE1 NE2 REMARK 470 ARG C 135 CG CD NE CZ NH1 NH2 REMARK 470 LYS C 138 CG CD CE NZ REMARK 470 GLU C 139 CG CD OE1 OE2 REMARK 470 THR C 189 OG1 CG2 REMARK 470 LYS D 138 CG CD CE NZ REMARK 470 LYS D 150 CG CD CE NZ REMARK 470 GLU D 153 CG CD OE1 OE2 REMARK 470 LYS D 188 CG CD CE NZ REMARK 470 THR D 189 OG1 CG2 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 HIS A 134 -86.77 24.12 REMARK 500 ASN A 154 69.33 -153.18 REMARK 500 ARG C 135 129.19 57.06 REMARK 500 PRO C 155 43.64 -72.40 REMARK 500 SER C 170 18.06 80.44 REMARK 500 PRO D 155 64.90 -68.01 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1APL RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF A MATALPHA2 HOMEODOMAIN-OPERATOR COMPLEX REMARK 900 SUGGESTS A GENERAL MODEL FOR HOMEODOMAIN-DNA INTERACTIONS REMARK 900 RELATED ID: 1YRN RELATED DB: PDB REMARK 900 MAT A1/ALPHA2/DNA TERNARY COMPLEX (HOMEODOMAIN) REMARK 900 RELATED ID: 1MNM RELATED DB: PDB REMARK 900 YEAST MATALPHA2/MCM1/DNA TERNARY TRANSCRIPTION COMPLEX CRYSTAL REMARK 900 STRUCTURE DBREF 1K61 A 132 191 UNP P01367 MAT2_YEAST 132 191 DBREF 1K61 B 132 191 UNP P01367 MAT2_YEAST 132 191 DBREF 1K61 C 132 191 UNP P01367 MAT2_YEAST 132 191 DBREF 1K61 D 132 191 UNP P01367 MAT2_YEAST 132 191 DBREF 1K61 E 1 21 PDB 1K61 1K61 1 21 DBREF 1K61 F 22 42 PDB 1K61 1K61 22 42 SEQRES 1 E 21 DA DC DA DT DG DT DA DA DT DT DC DA DT SEQRES 2 E 21 DT DT DA DC DA DC DG DC SEQRES 1 F 21 5IU DG DC DG DT DG DT DA DA DA DT DG DA SEQRES 2 F 21 DA DT DT DA DC DA DT DG SEQRES 1 A 60 ARG GLY HIS ARG PHE THR LYS GLU ASN VAL ARG ILE LEU SEQRES 2 A 60 GLU SER TRP PHE ALA LYS ASN ILE GLU ASN PRO TYR LEU SEQRES 3 A 60 ASP THR LYS GLY LEU GLU ASN LEU MET LYS ASN THR SER SEQRES 4 A 60 LEU SER ARG ILE GLN ILE LYS ASN TRP VAL SER ASN ARG SEQRES 5 A 60 ARG ARG LYS GLU LYS THR ILE THR SEQRES 1 B 60 ARG GLY HIS ARG PHE THR LYS GLU ASN VAL ARG ILE LEU SEQRES 2 B 60 GLU SER TRP PHE ALA LYS ASN ILE GLU ASN PRO TYR LEU SEQRES 3 B 60 ASP THR LYS GLY LEU GLU ASN LEU MET LYS ASN THR SER SEQRES 4 B 60 LEU SER ARG ILE GLN ILE LYS ASN TRP VAL SER ASN ARG SEQRES 5 B 60 ARG ARG LYS GLU LYS THR ILE THR SEQRES 1 C 60 ARG GLY HIS ARG PHE THR LYS GLU ASN VAL ARG ILE LEU SEQRES 2 C 60 GLU SER TRP PHE ALA LYS ASN ILE GLU ASN PRO TYR LEU SEQRES 3 C 60 ASP THR LYS GLY LEU GLU ASN LEU MET LYS ASN THR SER SEQRES 4 C 60 LEU SER ARG ILE GLN ILE LYS ASN TRP VAL SER ASN ARG SEQRES 5 C 60 ARG ARG LYS GLU LYS THR ILE THR SEQRES 1 D 60 ARG GLY HIS ARG PHE THR LYS GLU ASN VAL ARG ILE LEU SEQRES 2 D 60 GLU SER TRP PHE ALA LYS ASN ILE GLU ASN PRO TYR LEU SEQRES 3 D 60 ASP THR LYS GLY LEU GLU ASN LEU MET LYS ASN THR SER SEQRES 4 D 60 LEU SER ARG ILE GLN ILE LYS ASN TRP VAL SER ASN ARG SEQRES 5 D 60 ARG ARG LYS GLU LYS THR ILE THR MODRES 1K61 5IU F 22 DU 5-IODO-2'-DEOXYURIDINE-5'-MONOPHOSPHATE HET 5IU F 22 17 HETNAM 5IU 5-IODO-2'-DEOXYURIDINE-5'-MONOPHOSPHATE FORMUL 2 5IU C9 H12 I N2 O8 P FORMUL 7 HOH *195(H2 O) HELIX 1 1 THR A 137 ASN A 151 1 15 HELIX 2 2 ASP A 158 SER A 170 1 13 HELIX 3 3 SER A 172 THR A 189 1 18 HELIX 4 4 THR B 137 ASN B 151 1 15 HELIX 5 5 ASP B 158 SER B 170 1 13 HELIX 6 6 SER B 172 LYS B 188 1 17 HELIX 7 7 THR C 137 ASN C 151 1 15 HELIX 8 8 ASP C 158 SER C 170 1 13 HELIX 9 9 SER C 172 THR C 189 1 18 HELIX 10 10 THR D 137 ASN D 151 1 15 HELIX 11 11 ASP D 158 SER D 170 1 13 HELIX 12 12 SER D 172 GLU D 187 1 16 LINK O3' 5IU F 22 P DG F 23 1555 1555 1.60 CRYST1 38.940 70.240 68.290 90.00 105.42 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 0.025681 0.000000 0.007083 0.00000 SCALE2 0.000000 0.014237 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015190 0.00000