PDB Short entry for 1EG2 HEADER TRANSFERASE 11-FEB-00 1EG2 TITLE CRYSTAL STRUCTURE OF RHODOBACTER SPHEROIDES (N6 ADENOSINE) TITLE 2 METHYLTRANSFERASE (M.RSRI) COMPND MOL_ID: 1; COMPND 2 MOLECULE: MODIFICATION METHYLASE RSRI; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ADENINE-SPECIFIC METHYLTRANSFERASE RSRI, M.RSRI; COMPND 5 EC: 2.1.1.72; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RHODOBACTER SPHAEROIDES; SOURCE 3 ORGANISM_TAXID: 1063; SOURCE 4 EXPRESSION_SYSTEM_COMMON: T7 EXPRESSION SYSTEM; SOURCE 5 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 6 EXPRESSION_SYSTEM_PLASMID: PET28A KEYWDS ROSSMANN FOLD, EXOCYCLIC AMINO DNA METHYLTRANSFERASE RSRI, DNA KEYWDS 2 BINDING, DNA MODIFICATION, DNA METHYLATION, STRUCTURAL GENOMICS, KEYWDS 3 PSI, PROTEIN STRUCTURE INITIATIVE, MIDWEST CENTER FOR STRUCTURAL KEYWDS 4 GENOMICS, MCSG, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR R.D.SCAVETTA,C.B.THOMAS,M.A.WALSH,S.SZEGEDI,A.JOACHIMIAK,R.I.GUMPORT, AUTHOR 2 M.E.A.CHURCHILL,MIDWEST CENTER FOR STRUCTURAL GENOMICS (MCSG) REVDAT 6 07-FEB-24 1EG2 1 REMARK REVDAT 5 04-OCT-17 1EG2 1 REMARK REVDAT 4 13-JUL-11 1EG2 1 VERSN REVDAT 3 24-FEB-09 1EG2 1 VERSN REVDAT 2 18-JAN-05 1EG2 1 JRNL AUTHOR KEYWDS REMARK REVDAT 1 18-OCT-00 1EG2 0 JRNL AUTH R.D.SCAVETTA,C.B.THOMAS,M.A.WALSH,S.SZEGEDI,A.JOACHIMIAK, JRNL AUTH 2 R.I.GUMPORT,M.E.CHURCHILL JRNL TITL STRUCTURE OF RSRI METHYLTRANSFERASE, A MEMBER OF THE JRNL TITL 2 N6-ADENINE BETA CLASS OF DNA METHYLTRANSFERASES. JRNL REF NUCLEIC ACIDS RES. V. 28 3950 2000 JRNL REFN ISSN 0305-1048 JRNL PMID 11024175 JRNL DOI 10.1093/NAR/28.20.3950 REMARK 2 REMARK 2 RESOLUTION. 1.75 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 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 : BOND VIOLATIONS=0.05 ANGLE VIOLATIONS=8.0 REMARK 3 DIHEDRAL VIOLATIONS=60.0 IMPROPER VIOLATIONS= REMARK 3 3.0 REPORTED CLOSE CONTACTS=2.5 LOWER REMARK 3 RESOLUTION LIMIT FOR COORDINATE ERROR REMARK 3 ESTIMATION=5.0 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.75 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 35.21 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.2 REMARK 3 NUMBER OF REFLECTIONS : 31393 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM 10% PICK USING REMARK 3 MAKE_CV.INP OF CNS. REMARK 3 R VALUE (WORKING SET) : 0.214 REMARK 3 FREE R VALUE : 0.250 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 3140 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2146 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 20 REMARK 3 SOLVENT ATOMS : 227 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 18.90 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; 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 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1EG2 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-FEB-00. REMARK 100 THE DEPOSITION ID IS D_1000010539. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-JUN-98; 14-AUG-98 REMARK 200 TEMPERATURE (KELVIN) : 93; 93 REMARK 200 PH : 7.6 REMARK 200 NUMBER OF CRYSTALS USED : 2 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y; Y REMARK 200 RADIATION SOURCE : NSLS; APS REMARK 200 BEAMLINE : X12C; 19-ID REMARK 200 X-RAY GENERATOR MODEL : NULL; NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M; NULL REMARK 200 WAVELENGTH OR RANGE (A) : 1.000; NULL REMARK 200 MONOCHROMATOR : NULL; NULL REMARK 200 OPTICS : NULL; NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD; CCD REMARK 200 DETECTOR MANUFACTURER : BRANDEIS; 3X3 MOSAIC IN HOUSE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MARMAD, DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 68339 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 35.330 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.2 REMARK 200 DATA REDUNDANCY : 5.600 REMARK 200 R MERGE (I) : 0.03500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 13.2000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.75 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.81 REMARK 200 COMPLETENESS FOR SHELL (%) : 93.9 REMARK 200 DATA REDUNDANCY IN SHELL : 2.60 REMARK 200 R MERGE FOR SHELL (I) : 0.24200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH; NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: SOLVE, SHARP REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.06 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.16 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.5 M LI2SO4, 0.1 M HEPES, 0.5% REMARK 280 NAAZIDE, 10 MM EDTA, PH 7.6, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 33.64200 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 33.64200 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 35.21000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 65.12650 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 35.21000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 65.12650 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 33.64200 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 35.21000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 65.12650 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 33.64200 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 35.21000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 65.12650 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 4600 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24110 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -10.0 KCAL/MOL 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 70.42000 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 33.64200 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 ALA A 2 REMARK 465 ASN A 3 REMARK 465 ARG A 4 REMARK 465 SER A 5 REMARK 465 HIS A 6 REMARK 465 HIS A 7 REMARK 465 ASN A 8 REMARK 465 ALA A 9 REMARK 465 GLY A 10 REMARK 465 HIS A 11 REMARK 465 ARG A 12 REMARK 465 ALA A 13 REMARK 465 MET A 14 REMARK 465 ASN A 15 REMARK 465 ALA A 16 REMARK 465 LEU A 17 REMARK 465 ARG A 18 REMARK 465 LYS A 19 REMARK 465 SER A 20 REMARK 465 GLY A 21 REMARK 465 GLN A 22 REMARK 465 LYS A 23 REMARK 465 HIS A 24 REMARK 465 SER A 25 REMARK 465 SER A 26 REMARK 465 GLU A 27 REMARK 465 SER A 28 REMARK 465 GLN A 29 REMARK 465 LEU A 30 REMARK 465 GLY A 31 REMARK 465 SER A 32 REMARK 465 SER A 33 REMARK 465 GLU A 34 REMARK 465 ILE A 35 REMARK 465 GLN A 288 REMARK 465 ASP A 289 REMARK 465 ASP A 290 REMARK 465 GLY A 291 REMARK 465 LEU A 292 REMARK 465 ILE A 293 REMARK 465 ASP A 294 REMARK 465 LYS A 295 REMARK 465 ALA A 296 REMARK 465 GLY A 315 REMARK 465 ASP A 316 REMARK 465 VAL A 317 REMARK 465 ALA A 318 REMARK 465 SER A 319 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 ASP A 171 79.35 -112.72 REMARK 500 THR A 205 175.90 71.87 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTA A 401 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: APC116 RELATED DB: TARGETDB DBREF 1EG2 A 1 319 UNP P14751 MTR1_RHOSH 1 319 SEQRES 1 A 319 MET ALA ASN ARG SER HIS HIS ASN ALA GLY HIS ARG ALA SEQRES 2 A 319 MET ASN ALA LEU ARG LYS SER GLY GLN LYS HIS SER SER SEQRES 3 A 319 GLU SER GLN LEU GLY SER SER GLU ILE GLY THR THR ARG SEQRES 4 A 319 HIS VAL TYR ASP VAL CYS ASP CYS LEU ASP THR LEU ALA SEQRES 5 A 319 LYS LEU PRO ASP ASP SER VAL GLN LEU ILE ILE CYS ASP SEQRES 6 A 319 PRO PRO TYR ASN ILE MET LEU ALA ASP TRP ASP ASP HIS SEQRES 7 A 319 MET ASP TYR ILE GLY TRP ALA LYS ARG TRP LEU ALA GLU SEQRES 8 A 319 ALA GLU ARG VAL LEU SER PRO THR GLY SER ILE ALA ILE SEQRES 9 A 319 PHE GLY GLY LEU GLN TYR GLN GLY GLU ALA GLY SER GLY SEQRES 10 A 319 ASP LEU ILE SER ILE ILE SER HIS MET ARG GLN ASN SER SEQRES 11 A 319 LYS MET LEU LEU ALA ASN LEU ILE ILE TRP ASN TYR PRO SEQRES 12 A 319 ASN GLY MET SER ALA GLN ARG PHE PHE ALA ASN ARG HIS SEQRES 13 A 319 GLU GLU ILE ALA TRP PHE ALA LYS THR LYS LYS TYR PHE SEQRES 14 A 319 PHE ASP LEU ASP ALA VAL ARG GLU PRO TYR ASP GLU GLU SEQRES 15 A 319 THR LYS ALA ALA TYR MET LYS ASP LYS ARG LEU ASN PRO SEQRES 16 A 319 GLU SER VAL GLU LYS GLY ARG ASN PRO THR ASN VAL TRP SEQRES 17 A 319 ARG MET SER ARG LEU ASN GLY ASN SER LEU GLU ARG VAL SEQRES 18 A 319 GLY HIS PRO THR GLN LYS PRO ALA ALA VAL ILE GLU ARG SEQRES 19 A 319 LEU VAL ARG ALA LEU SER HIS PRO GLY SER THR VAL LEU SEQRES 20 A 319 ASP PHE PHE ALA GLY SER GLY VAL THR ALA ARG VAL ALA SEQRES 21 A 319 ILE GLN GLU GLY ARG ASN SER ILE CYS THR ASP ALA ALA SEQRES 22 A 319 PRO VAL PHE LYS GLU TYR TYR GLN LYS GLN LEU THR PHE SEQRES 23 A 319 LEU GLN ASP ASP GLY LEU ILE ASP LYS ALA ARG SER TYR SEQRES 24 A 319 GLU ILE VAL GLU GLY ALA ALA ASN PHE GLY ALA ALA LEU SEQRES 25 A 319 GLN ARG GLY ASP VAL ALA SER HET MTA A 401 20 HETNAM MTA 5'-DEOXY-5'-METHYLTHIOADENOSINE FORMUL 2 MTA C11 H15 N5 O3 S FORMUL 3 HOH *227(H2 O) HELIX 1 1 ASP A 46 LYS A 53 1 8 HELIX 2 2 MET A 71 ASP A 77 5 7 HELIX 3 3 ASP A 80 VAL A 95 1 16 HELIX 4 4 ASP A 118 SER A 130 1 13 HELIX 5 5 LEU A 172 ARG A 176 5 5 HELIX 6 6 ASP A 180 LYS A 189 1 10 HELIX 7 7 ASN A 194 GLY A 201 1 8 HELIX 8 8 PRO A 228 SER A 240 1 13 HELIX 9 9 GLY A 254 GLY A 264 1 11 HELIX 10 10 PRO A 274 LEU A 287 1 14 HELIX 11 11 ALA A 305 ASN A 307 5 3 HELIX 12 12 PHE A 308 GLN A 313 1 6 SHEET 1 A 9 VAL A 207 ARG A 209 0 SHEET 2 A 9 LEU A 133 ASN A 141 1 O ILE A 139 N TRP A 208 SHEET 3 A 9 HIS A 156 ALA A 163 -1 O GLU A 157 N TRP A 140 SHEET 4 A 9 LEU A 96 GLY A 106 -1 O ILE A 102 N PHE A 162 SHEET 5 A 9 VAL A 59 CYS A 64 1 O VAL A 59 N SER A 97 SHEET 6 A 9 THR A 245 ASP A 248 1 O THR A 245 N LEU A 61 SHEET 7 A 9 ASN A 266 ASP A 271 1 O ASN A 266 N VAL A 246 SHEET 8 A 9 THR A 38 VAL A 44 1 O ARG A 39 N SER A 267 SHEET 9 A 9 TYR A 299 GLU A 303 1 N GLU A 300 O THR A 38 SITE 1 AC1 11 ASP A 46 CYS A 47 ASP A 65 HIS A 223 SITE 2 AC1 11 THR A 225 PHE A 249 PHE A 250 GLY A 252 SITE 3 AC1 11 ASP A 271 ALA A 272 ALA A 273 CRYST1 70.420 130.253 67.284 90.00 90.00 90.00 C 2 2 21 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 0.014201 0.000000 0.000000 0.00000 SCALE2 0.000000 0.007677 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014862 0.00000