HEADER OXIDOREDUCTASE 30-MAR-18 6CW7 TITLE E. COLI DHFR PRODUCT COMPLEX WITH (6S)-5,6,7,8-TETRAHYDROFOLATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A; COMPND 4 EC: 1.5.1.3; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI O6:H1 (STRAIN CFT073 / ATCC SOURCE 3 700928 / UPEC); SOURCE 4 ORGANISM_TAXID: 199310; SOURCE 5 STRAIN: CFT073 / ATCC 700928 / UPEC; SOURCE 6 GENE: FOLA, C0058; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS DHFR, DIHYDROFOLATE REDUCTASE, TETRAHYDROFOLATE, COMPLEX, KEYWDS 2 OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR H.CAO,J.RODRIGUES,J.BENACH,A.FROMMELT,L.MORISCO,J.KOSS,E.SHAKHNOVICH, AUTHOR 2 J.SKOLNICK REVDAT 3 04-OCT-23 6CW7 1 LINK REVDAT 2 01-JAN-20 6CW7 1 REMARK REVDAT 1 09-JAN-19 6CW7 0 JRNL AUTH H.CAO,M.GAO,H.ZHOU,J.SKOLNICK JRNL TITL THE CRYSTAL STRUCTURE OF A TETRAHYDROFOLATE-BOUND JRNL TITL 2 DIHYDROFOLATE REDUCTASE REVEALS THE ORIGIN OF SLOW PRODUCT JRNL TITL 3 RELEASE. JRNL REF COMMUN BIOL V. 1 226 2018 JRNL REFN ESSN 2399-3642 JRNL PMID 30564747 JRNL DOI 10.1038/S42003-018-0236-Y REMARK 2 REMARK 2 RESOLUTION. 1.03 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 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 : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.03 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 31.06 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.3 REMARK 3 NUMBER OF REFLECTIONS : 65896 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.186 REMARK 3 R VALUE (WORKING SET) : 0.186 REMARK 3 FREE R VALUE : 0.206 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 3.030 REMARK 3 FREE R VALUE TEST SET COUNT : 1995 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 31.0711 - 2.4874 0.99 4953 153 0.1649 0.1865 REMARK 3 2 2.4874 - 1.9744 1.00 4770 150 0.1702 0.1680 REMARK 3 3 1.9744 - 1.7248 1.00 4726 147 0.1739 0.2295 REMARK 3 4 1.7248 - 1.5672 1.00 4708 148 0.1762 0.2049 REMARK 3 5 1.5672 - 1.4548 1.00 4693 145 0.1793 0.2047 REMARK 3 6 1.4548 - 1.3691 1.00 4659 146 0.1917 0.2289 REMARK 3 7 1.3691 - 1.3005 1.00 4677 146 0.1950 0.2086 REMARK 3 8 1.3005 - 1.2439 1.00 4648 146 0.2032 0.1969 REMARK 3 9 1.2439 - 1.1960 1.00 4624 145 0.2082 0.2270 REMARK 3 10 1.1960 - 1.1547 1.00 4648 145 0.2226 0.2619 REMARK 3 11 1.1547 - 1.1186 1.00 4618 144 0.2402 0.2450 REMARK 3 12 1.1186 - 1.0866 0.99 4565 143 0.2757 0.2767 REMARK 3 13 1.0866 - 1.0580 0.92 4281 132 0.3187 0.3175 REMARK 3 14 1.0580 - 1.0322 0.72 3331 105 0.3749 0.3726 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : NULL REMARK 3 SOLVENT RADIUS : 1.11 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) : 0.130 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 22.730 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 10.76 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 16.39 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 : 0.008 1511 REMARK 3 ANGLE : 1.387 2071 REMARK 3 CHIRALITY : 0.074 214 REMARK 3 PLANARITY : 0.007 277 REMARK 3 DIHEDRAL : 13.331 553 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 6CW7 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-APR-18. REMARK 100 THE DEPOSITION ID IS D_1000233602. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 08-DEC-17 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 31-ID REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97931 REMARK 200 MONOCHROMATOR : KOHZU HLD-4 DOUBLE CRYSTAL REMARK 200 OPTICS : DIAMOND(111) REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : RAYONIX MX-225 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XSCALE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 65916 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.030 REMARK 200 RESOLUTION RANGE LOW (A) : 31.057 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.3 REMARK 200 DATA REDUNDANCY : 6.354 REMARK 200 R MERGE (I) : 0.06400 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 12.5700 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.03 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.09 REMARK 200 COMPLETENESS FOR SHELL (%) : 84.2 REMARK 200 DATA REDUNDANCY IN SHELL : 3.06 REMARK 200 R MERGE FOR SHELL (I) : 1.01900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.010 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: 7DFR REMARK 200 REMARK 200 REMARK: RECTANGULAR BLOCKS, WITH LONGEST DIMENSION OF 0.3-0.8MM REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 33.22 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.84 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20 MG/ML PROTEIN WORKING STOCK WAS REMARK 280 PREPARED FROM 2:1 V/V MIXING OF 30MG/ML PROTEIN IN 20MM TRIS PH REMARK 280 8, 1MM DTT AND 50MM HEPES PH 7.3, 100MM NACL. THEN THE WORKING REMARK 280 PROTEIN STOCK AT 20 MG/ML IS MIXED AT 1:1 V/V RATIO WITH REMARK 280 RESERVOIR SOLUTION OF 0.1M MES PH 6.5, 30% PEG3350, 0.4M MGCL2, REMARK 280 VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293.15K 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 16.93050 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 38.92050 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 25.76450 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 38.92050 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 16.93050 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 25.76450 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 HIS A 163 REMARK 465 HIS A 164 REMARK 465 HIS A 165 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O HOH A 413 O HOH A 443 1.98 REMARK 500 O HOH A 381 O HOH A 459 2.09 REMARK 500 OE1 GLU A 120 O HOH A 301 2.11 REMARK 500 O HOH A 403 O HOH A 461 2.16 REMARK 500 O HOH A 364 O HOH A 447 2.18 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O HOH A 479 O HOH A 483 1455 2.03 REMARK 500 O HOH A 321 O HOH A 375 1655 2.09 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 ILE A 14 -78.30 -117.77 REMARK 500 ILE A 14 -151.53 -119.49 REMARK 500 ASP A 69 118.62 -172.34 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 505 DISTANCE = 5.81 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 MG A 208 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 70 OD2 REMARK 620 2 HOH A 304 O 100.7 REMARK 620 3 HOH A 316 O 78.7 157.4 REMARK 620 4 HOH A 405 O 88.5 75.2 82.2 REMARK 620 5 HOH A 441 O 82.4 105.7 96.6 170.8 REMARK 620 6 HOH A 485 O 166.7 76.4 98.8 78.3 110.9 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 205 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 101 OE1 REMARK 620 2 GLU A 139 OE1 97.5 REMARK 620 3 GLU A 139 OE2 97.4 1.6 REMARK 620 4 HOH A 331 O 88.7 53.6 55.3 REMARK 620 5 HOH A 351 O 89.3 123.9 122.3 176.5 REMARK 620 6 HOH A 388 O 89.4 34.5 32.8 86.6 90.5 REMARK 620 7 HOH A 415 O 178.9 82.3 82.4 92.1 89.9 89.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 206 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 101 OE2 REMARK 620 2 SER A 138 O 74.1 REMARK 620 3 SER A 138 OG 71.2 6.0 REMARK 620 4 HOH A 367 O 96.3 43.9 49.9 REMARK 620 5 HOH A 457 O 96.0 56.8 52.8 90.5 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 207 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 319 O REMARK 620 2 HOH A 429 O 75.8 REMARK 620 3 HOH A 431 O 173.0 100.8 REMARK 620 4 HOH A 436 O 88.8 164.3 94.8 REMARK 620 5 HOH A 489 O 98.0 118.5 89.1 60.1 REMARK 620 N 1 2 3 4 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 6CXK RELATED DB: PDB REMARK 900 RELATED ID: 6CQA RELATED DB: PDB DBREF 6CW7 A 1 159 UNP P0ABQ5 DYR_ECOL6 1 159 SEQADV 6CW7 HIS A 160 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CW7 HIS A 161 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CW7 HIS A 162 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CW7 HIS A 163 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CW7 HIS A 164 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CW7 HIS A 165 UNP P0ABQ5 EXPRESSION TAG SEQRES 1 A 165 MET ILE SER LEU ILE ALA ALA LEU ALA VAL ASP ARG VAL SEQRES 2 A 165 ILE GLY MET GLU ASN ALA MET PRO TRP ASN LEU PRO ALA SEQRES 3 A 165 ASP LEU ALA TRP PHE LYS ARG ASN THR LEU ASN LYS PRO SEQRES 4 A 165 VAL ILE MET GLY ARG HIS THR TRP GLU SER ILE GLY ARG SEQRES 5 A 165 PRO LEU PRO GLY ARG LYS ASN ILE ILE LEU SER SER GLN SEQRES 6 A 165 PRO GLY THR ASP ASP ARG VAL THR TRP VAL LYS SER VAL SEQRES 7 A 165 ASP GLU ALA ILE ALA ALA CYS GLY ASP VAL PRO GLU ILE SEQRES 8 A 165 MET VAL ILE GLY GLY GLY ARG VAL TYR GLU GLN PHE LEU SEQRES 9 A 165 PRO LYS ALA GLN LYS LEU TYR LEU THR HIS ILE ASP ALA SEQRES 10 A 165 GLU VAL GLU GLY ASP THR HIS PHE PRO ASP TYR GLU PRO SEQRES 11 A 165 ASP ASP TRP GLU SER VAL PHE SER GLU PHE HIS ASP ALA SEQRES 12 A 165 ASP ALA GLN ASN SER HIS SER TYR CYS PHE GLU ILE LEU SEQRES 13 A 165 GLU ARG ARG HIS HIS HIS HIS HIS HIS HET THG A 201 53 HET CL A 202 1 HET CL A 203 1 HET CL A 204 1 HET MG A 205 1 HET MG A 206 1 HET MG A 207 1 HET MG A 208 1 HETNAM THG (6S)-5,6,7,8-TETRAHYDROFOLATE HETNAM CL CHLORIDE ION HETNAM MG MAGNESIUM ION FORMUL 2 THG C19 H23 N7 O6 FORMUL 3 CL 3(CL 1-) FORMUL 6 MG 4(MG 2+) FORMUL 10 HOH *205(H2 O) HELIX 1 AA1 ALA A 9 VAL A 13 5 5 HELIX 2 AA2 MET A 16 MET A 20 5 5 HELIX 3 AA3 LEU A 24 LEU A 36 1 13 HELIX 4 AA4 ARG A 44 GLY A 51 1 8 HELIX 5 AA5 SER A 77 GLY A 86 1 10 HELIX 6 AA6 GLY A 96 LEU A 104 1 9 HELIX 7 AA7 GLU A 129 ASP A 131 5 3 SHEET 1 AA1 8 THR A 73 VAL A 75 0 SHEET 2 AA1 8 ASN A 59 LEU A 62 1 N ILE A 61 O THR A 73 SHEET 3 AA1 8 VAL A 40 GLY A 43 1 N VAL A 40 O ILE A 60 SHEET 4 AA1 8 ILE A 91 VAL A 93 1 O MET A 92 N ILE A 41 SHEET 5 AA1 8 ILE A 2 LEU A 8 1 N SER A 3 O VAL A 93 SHEET 6 AA1 8 ALA A 107 ILE A 115 1 O THR A 113 N LEU A 8 SHEET 7 AA1 8 TYR A 151 ARG A 158 -1 O CYS A 152 N HIS A 114 SHEET 8 AA1 8 TRP A 133 HIS A 141 -1 N HIS A 141 O TYR A 151 LINK OD2 ASP A 70 MG MG A 208 1555 1555 2.22 LINK OE1 GLU A 101 MG MG A 205 1555 1555 2.11 LINK OE2 GLU A 101 MG MG A 206 1555 1555 2.34 LINK O SER A 138 MG MG A 206 1555 3444 2.39 LINK OG SER A 138 MG MG A 206 1555 3444 2.40 LINK OE1BGLU A 139 MG MG A 205 1555 3444 1.95 LINK OE2AGLU A 139 MG MG A 205 1555 3444 2.33 LINK MG MG A 205 O HOH A 331 1555 1555 2.18 LINK MG MG A 205 O HOH A 351 1555 3454 2.03 LINK MG MG A 205 O HOH A 388 1555 1555 2.07 LINK MG MG A 205 O HOH A 415 1555 3454 2.06 LINK MG MG A 206 O HOH A 367 1555 1555 2.28 LINK MG MG A 206 O HOH A 457 1555 1555 2.55 LINK MG MG A 207 O HOH A 319 1555 1555 2.60 LINK MG MG A 207 O HOH A 429 1555 1555 2.17 LINK MG MG A 207 O HOH A 431 1555 1555 2.17 LINK MG MG A 207 O HOH A 436 1555 1555 2.15 LINK MG MG A 207 O HOH A 489 1555 1555 2.41 LINK MG MG A 208 O HOH A 304 1555 4555 2.28 LINK MG MG A 208 O HOH A 316 1555 1555 2.97 LINK MG MG A 208 O HOH A 405 1555 1555 1.93 LINK MG MG A 208 O HOH A 441 1555 1555 2.42 LINK MG MG A 208 O HOH A 485 1555 4455 2.06 CISPEP 1 GLY A 95 GLY A 96 0 5.43 CRYST1 33.861 51.529 77.841 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 0.029533 0.000000 0.000000 0.00000 SCALE2 0.000000 0.019407 0.000000 0.00000 SCALE3 0.000000 0.000000 0.012847 0.00000