PDB Short entry for 1TFR HEADER HYDROLASE 27-APR-96 1TFR TITLE RNASE H FROM BACTERIOPHAGE T4 COMPND MOL_ID: 1; COMPND 2 MOLECULE: T4 RNASE H; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: T4 5U TO 3U EXONUCLEASE; COMPND 5 EC: 3.1.26.4; COMPND 6 ENGINEERED: YES; COMPND 7 OTHER_DETAILS: TWO OCTAHEDRALLY-COORDINATED MG2+ IONS IN ACTIVE SITE SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ENTEROBACTERIA PHAGE T4; SOURCE 3 ORGANISM_TAXID: 10665; SOURCE 4 STRAIN: T4D; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_GENE: T4RNH KEYWDS 5U-3U EXONUCLEASE, RNA:RNA, DNA:DNA, METAL-DEPENDENT, MAGNESIUM- KEYWDS 2 CONTAINING, HYDROLASE (NUCLEIC ACID), HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR T.C.MUESER,N.G.NOSSAL,C.C.HYDE REVDAT 3 14-FEB-24 1TFR 1 REMARK LINK REVDAT 2 24-FEB-09 1TFR 1 VERSN REVDAT 1 08-NOV-96 1TFR 0 JRNL AUTH T.C.MUESER,N.G.NOSSAL,C.C.HYDE JRNL TITL STRUCTURE OF BACTERIOPHAGE T4 RNASE H, A 5' TO 3' RNA-DNA JRNL TITL 2 AND DNA-DNA EXONUCLEASE WITH SEQUENCE SIMILARITY TO THE RAD2 JRNL TITL 3 FAMILY OF EUKARYOTIC PROTEINS. JRNL REF CELL(CAMBRIDGE,MASS.) V. 85 1101 1996 JRNL REFN ISSN 0092-8674 JRNL PMID 8674116 JRNL DOI 10.1016/S0092-8674(00)81310-0 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH N.G.NOSSAL,D.M.HINTON,L.J.HOBBS,P.SPACCIAPOLI REMARK 1 TITL PURIFICATION OF BACTERIOPHAGE T4 DNA REPLICATION PROTEINS REMARK 1 REF METHODS ENZYMOL. V. 262 560 1995 REMARK 1 REFN ISSN 0076-6879 REMARK 1 REFERENCE 2 REMARK 1 AUTH H.C.HOLLINGSWORTH,N.G.NOSSAL REMARK 1 TITL BACTERIOPHAGE T4 ENCODES AN RNASE H WHICH REMOVES RNA REMARK 1 TITL 2 PRIMERS MADE BY THE T4 REPLICATION SYSTEM IN VITRO REMARK 1 REF J.BIOL.CHEM. V. 266 1888 1991 REMARK 1 REFN ISSN 0021-9258 REMARK 1 REFERENCE 3 REMARK 1 AUTH S.HAHN,W.RUGER REMARK 1 TITL ORGANIZATION OF THE BACTERIOPHAGE T4 GENOME BETWEEN MAP REMARK 1 TITL 2 POSITIONS 150.745 AND 145.824 REMARK 1 REF NUCLEIC ACIDS RES. V. 17 6729 1989 REMARK 1 REFN ISSN 0305-1048 REMARK 1 REFERENCE 4 REMARK 1 AUTH S.HAHN,U.KRUSE,W.RUGER REMARK 1 TITL THE REGION OF PHAGE T4 GENES 34, 33 AND 59: PRIMARY REMARK 1 TITL 2 STRUCTURES AND ORGANIZATION ON THE GENOME REMARK 1 REF NUCLEIC ACIDS RES. V. 14 9311 1986 REMARK 1 REFN ISSN 0305-1048 REMARK 2 REMARK 2 RESOLUTION. 2.06 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.06 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 90.3 REMARK 3 NUMBER OF REFLECTIONS : 19591 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.205 REMARK 3 FREE R VALUE : 0.290 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. 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) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2325 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 179 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.98 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.21 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.010 ; 0.010 REMARK 3 ANGLE DISTANCE (A) : 0.032 ; 0.020 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.033 ; 0.025 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.010 ; 0.010 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.071 ; 0.050 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.177 ; 0.200 REMARK 3 MULTIPLE TORSION (A) : 0.190 ; 0.200 REMARK 3 H-BOND (X...Y) (A) : 0.197 ; 0.200 REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : 2.000 ; 2.000 REMARK 3 PLANAR (DEGREES) : 19.700; 15.000 REMARK 3 STAGGERED (DEGREES) : 31.400; 20.000 REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 2.981 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 4.270 ; 3.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 5.192 ; 3.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 6.939 ; 5.000 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1TFR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000176660. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 18-OCT-95 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : PROCESS REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 22706 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.060 REMARK 200 RESOLUTION RANGE LOW (A) : 6.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.6 REMARK 200 DATA REDUNDANCY : 2.580 REMARK 200 R MERGE (I) : 0.05000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL 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): 2.50 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-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 37.23500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 27.28000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 43.79000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 27.28000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 37.23500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 43.79000 REMARK 290 SMTRY3 4 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A 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 ASP A 2 REMARK 465 LEU A 3 REMARK 465 GLU A 4 REMARK 465 MET A 5 REMARK 465 MET A 6 REMARK 465 LEU A 7 REMARK 465 ASP A 8 REMARK 465 GLU A 9 REMARK 465 ASP A 10 REMARK 465 TYR A 11 REMARK 465 ASN A 89 REMARK 465 ARG A 90 REMARK 465 GLY A 91 REMARK 465 LYS A 92 REMARK 465 ALA A 93 REMARK 465 ARG A 94 REMARK 465 GLU A 95 REMARK 465 GLU A 96 REMARK 465 SER A 97 REMARK 465 LYS A 181 REMARK 465 SER A 182 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 ARG A 44 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 ARG A 44 NE - CZ - NH2 ANGL. DEV. = -3.6 DEGREES REMARK 500 ARG A 80 CD - NE - CZ ANGL. DEV. = -9.6 DEGREES REMARK 500 ASP A 132 CB - CG - OD2 ANGL. DEV. = 6.7 DEGREES REMARK 500 ASP A 235 CB - CG - OD1 ANGL. DEV. = 5.9 DEGREES REMARK 500 ARG A 236 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 ARG A 236 NE - CZ - NH2 ANGL. DEV. = -3.4 DEGREES REMARK 500 GLU A 237 CA - CB - CG ANGL. DEV. = 17.0 DEGREES REMARK 500 ARG A 283 NE - CZ - NH1 ANGL. DEV. = 7.2 DEGREES REMARK 500 ARG A 283 NE - CZ - NH2 ANGL. DEV. = -6.7 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 PRO A 120 28.06 -77.79 REMARK 500 SER A 153 142.09 -177.08 REMARK 500 LYS A 175 85.47 46.55 REMARK 500 ASP A 197 87.63 -155.28 REMARK 500 LEU A 295 58.98 -101.42 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 351 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 132 OD1 REMARK 620 2 ASP A 132 OD2 43.0 REMARK 620 3 HOH A 407 O 91.1 79.1 REMARK 620 4 HOH A 408 O 115.0 153.7 89.0 REMARK 620 5 HOH A 409 O 92.1 104.7 176.3 87.8 REMARK 620 6 HOH A 410 O 95.6 52.7 76.5 146.4 105.2 REMARK 620 7 HOH A 411 O 164.2 127.4 73.6 69.5 103.4 77.4 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 350 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 401 O REMARK 620 2 HOH A 402 O 100.0 REMARK 620 3 HOH A 403 O 163.9 90.9 REMARK 620 4 HOH A 404 O 75.5 168.9 91.6 REMARK 620 5 HOH A 405 O 78.1 95.2 89.2 74.1 REMARK 620 6 HOH A 406 O 100.9 88.1 91.2 102.6 176.7 REMARK 620 N 1 2 3 4 5 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 350 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 351 DBREF 1TFR A 1 305 UNP P13319 RNH_BPT4 1 305 SEQRES 1 A 305 MET ASP LEU GLU MET MET LEU ASP GLU ASP TYR LYS GLU SEQRES 2 A 305 GLY ILE CYS LEU ILE ASP PHE SER GLN ILE ALA LEU SER SEQRES 3 A 305 THR ALA LEU VAL ASN PHE PRO ASP LYS GLU LYS ILE ASN SEQRES 4 A 305 LEU SER MET VAL ARG HIS LEU ILE LEU ASN SER ILE LYS SEQRES 5 A 305 PHE ASN VAL LYS LYS ALA LYS THR LEU GLY TYR THR LYS SEQRES 6 A 305 ILE VAL LEU CYS ILE ASP ASN ALA LYS SER GLY TYR TRP SEQRES 7 A 305 ARG ARG ASP PHE ALA TYR TYR TYR LYS LYS ASN ARG GLY SEQRES 8 A 305 LYS ALA ARG GLU GLU SER THR TRP ASP TRP GLU GLY TYR SEQRES 9 A 305 PHE GLU SER SER HIS LYS VAL ILE ASP GLU LEU LYS ALA SEQRES 10 A 305 TYR MET PRO TYR ILE VAL MET ASP ILE ASP LYS TYR GLU SEQRES 11 A 305 ALA ASP ASP HIS ILE ALA VAL LEU VAL LYS LYS PHE SER SEQRES 12 A 305 LEU GLU GLY HIS LYS ILE LEU ILE ILE SER SER ASP GLY SEQRES 13 A 305 ASP PHE THR GLN LEU HIS LYS TYR PRO ASN VAL LYS GLN SEQRES 14 A 305 TRP SER PRO MET HIS LYS LYS TRP VAL LYS ILE LYS SER SEQRES 15 A 305 GLY SER ALA GLU ILE ASP CYS MET THR LYS ILE LEU LYS SEQRES 16 A 305 GLY ASP LYS LYS ASP ASN VAL ALA SER VAL LYS VAL ARG SEQRES 17 A 305 SER ASP PHE TRP PHE THR ARG VAL GLU GLY GLU ARG THR SEQRES 18 A 305 PRO SER MET LYS THR SER ILE VAL GLU ALA ILE ALA ASN SEQRES 19 A 305 ASP ARG GLU GLN ALA LYS VAL LEU LEU THR GLU SER GLU SEQRES 20 A 305 TYR ASN ARG TYR LYS GLU ASN LEU VAL LEU ILE ASP PHE SEQRES 21 A 305 ASP TYR ILE PRO ASP ASN ILE ALA SER ASN ILE VAL ASN SEQRES 22 A 305 TYR TYR ASN SER TYR LYS LEU PRO PRO ARG GLY LYS ILE SEQRES 23 A 305 TYR SER TYR PHE VAL LYS ALA GLY LEU SER LYS LEU THR SEQRES 24 A 305 ASN SER ILE ASN GLU PHE HET MG A 350 1 HET MG A 351 1 HETNAM MG MAGNESIUM ION FORMUL 2 MG 2(MG 2+) FORMUL 4 HOH *179(H2 O) HELIX 1 1 PHE A 20 ASN A 31 1 12 HELIX 2 2 LEU A 40 THR A 60 1 21 HELIX 3 3 TRP A 78 ASP A 81 5 4 HELIX 4 4 TRP A 101 TYR A 118 1 18 HELIX 5 5 ALA A 131 LEU A 144 1 14 HELIX 6 6 GLY A 156 GLN A 160 5 5 HELIX 7 7 SER A 184 LYS A 195 1 12 HELIX 8 8 THR A 226 ASN A 234 1 9 HELIX 9 9 ARG A 236 LEU A 242 5 7 HELIX 10 10 GLU A 245 ILE A 258 1 14 HELIX 11 11 ASP A 265 ASN A 276 1 12 HELIX 12 12 ARG A 283 LYS A 292 5 10 HELIX 13 13 SER A 296 PHE A 305 5 10 SHEET 1 A 5 VAL A 167 TRP A 170 0 SHEET 2 A 5 ILE A 149 ILE A 152 1 N ILE A 149 O LYS A 168 SHEET 3 A 5 ILE A 15 ASP A 19 1 N ILE A 15 O LEU A 150 SHEET 4 A 5 LYS A 65 CYS A 69 1 N LYS A 65 O CYS A 16 SHEET 5 A 5 ILE A 122 MET A 124 1 N ILE A 122 O LEU A 68 LINK OD1 ASP A 132 MG MG A 351 1555 1555 1.79 LINK OD2 ASP A 132 MG MG A 351 1555 1555 3.08 LINK MG MG A 350 O HOH A 401 1555 1555 2.36 LINK MG MG A 350 O HOH A 402 1555 1555 2.20 LINK MG MG A 350 O HOH A 403 1555 1555 2.20 LINK MG MG A 350 O HOH A 404 1555 1555 2.15 LINK MG MG A 350 O HOH A 405 1555 1555 2.13 LINK MG MG A 350 O HOH A 406 1555 1555 2.35 LINK MG MG A 351 O HOH A 407 1555 1555 2.50 LINK MG MG A 351 O HOH A 408 1555 1555 2.16 LINK MG MG A 351 O HOH A 409 1555 1555 2.12 LINK MG MG A 351 O HOH A 410 1555 1555 2.37 LINK MG MG A 351 O HOH A 411 1555 1555 2.48 SITE 1 AC1 6 HOH A 401 HOH A 402 HOH A 403 HOH A 404 SITE 2 AC1 6 HOH A 405 HOH A 406 SITE 1 AC2 6 ASP A 132 HOH A 407 HOH A 408 HOH A 409 SITE 2 AC2 6 HOH A 410 HOH A 411 CRYST1 74.470 87.580 54.560 90.00 90.00 90.00 P 21 21 21 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 0.013428 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011418 0.000000 0.00000 SCALE3 0.000000 0.000000 0.018328 0.00000