HEADER OXIDOREDUCTASE 03-APR-18 6CXK TITLE E. COLI DHFR SUBSTRATE COMPLEX WITH DIHYDROFOLATE 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, DIHYDROFOLATE, COMPLEX, 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 6CXK 1 LINK REVDAT 2 01-JAN-20 6CXK 1 REMARK REVDAT 1 09-JAN-19 6CXK 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. 1.11 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.8.4_1496 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) : 1.11 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.95 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.8 REMARK 3 NUMBER OF REFLECTIONS : 53202 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.179 REMARK 3 R VALUE (WORKING SET) : 0.179 REMARK 3 FREE R VALUE : 0.196 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 3.750 REMARK 3 FREE R VALUE TEST SET COUNT : 1993 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 30.9612 - 2.6698 1.00 3960 153 0.1558 0.1654 REMARK 3 2 2.6698 - 2.1193 1.00 3807 148 0.1541 0.1913 REMARK 3 3 2.1193 - 1.8514 1.00 3787 148 0.1481 0.1741 REMARK 3 4 1.8514 - 1.6822 1.00 3748 146 0.1618 0.1756 REMARK 3 5 1.6822 - 1.5616 1.00 3744 146 0.1650 0.1759 REMARK 3 6 1.5616 - 1.4695 1.00 3702 143 0.1802 0.1806 REMARK 3 7 1.4695 - 1.3959 1.00 3731 146 0.1904 0.2285 REMARK 3 8 1.3959 - 1.3352 1.00 3684 143 0.2160 0.2331 REMARK 3 9 1.3352 - 1.2838 1.00 3714 145 0.2226 0.2206 REMARK 3 10 1.2838 - 1.2395 1.00 3709 144 0.2390 0.2385 REMARK 3 11 1.2395 - 1.2007 1.00 3684 144 0.2577 0.3041 REMARK 3 12 1.2007 - 1.1664 1.00 3664 142 0.2966 0.2945 REMARK 3 13 1.1664 - 1.1357 0.95 3497 137 0.3306 0.3558 REMARK 3 14 1.1357 - 1.1080 0.75 2778 108 0.4029 0.4221 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) : 0.140 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 23.000 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 11.47 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 18.63 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 : 0.009 1476 REMARK 3 ANGLE : 1.334 2018 REMARK 3 CHIRALITY : 0.078 205 REMARK 3 PLANARITY : 0.007 268 REMARK 3 DIHEDRAL : 13.574 540 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 6CXK 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_1000233663. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 30-NOV-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 : 53265 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.108 REMARK 200 RESOLUTION RANGE LOW (A) : 30.949 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.9 REMARK 200 DATA REDUNDANCY : 6.255 REMARK 200 R MERGE (I) : 0.06700 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 13.4400 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.11 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.18 REMARK 200 COMPLETENESS FOR SHELL (%) : 87.3 REMARK 200 DATA REDUNDANCY IN SHELL : 2.80 REMARK 200 R MERGE FOR SHELL (I) : 0.86100 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.160 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 0.2-0.7 MM REMARK 200 APPEARED IN 2-5 DAYS. REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 31.02 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.78 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: SITTING DROP OF FINAL VOLUME OF 0.8 UL REMARK 280 WAS SET UP BY 1:1 V/V MIXING OF 15 MG/ML E. COLI DHFR WORKING REMARK 280 STOCK WITH RESERVOIR SOLUTION CONTAINING 0.1M MES PH 6.5, 27.5% REMARK 280 PEG 3350, 0.4M MGCL2. E. COLI DHFR WORKING STOCK WAS PREPARED REMARK 280 FROM A 1:1 V/V MIXTURE OF 30 MG/ML PROTEIN IN 20 MM TRIS PH 8, REMARK 280 1MM DTT WITH 50 MM HEPES PH 7.3, 100 MM NACL. CRYSTALS HARVESTED REMARK 280 AFTER 2 WEEKS GROWTH AND CRYOPROTECTED WITH MITEGEN LV OIL REMARK 280 BEFORE FLASH FREEZING IN N2., VAPOR DIFFUSION, SITTING DROP, REMARK 280 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 16.84900 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 38.71050 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 25.76250 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 38.71050 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 16.84900 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 25.76250 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 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 322 O HOH A 394 2.11 REMARK 500 O HOH A 305 O HOH A 462 2.11 REMARK 500 O HOH A 431 O HOH A 452 2.12 REMARK 500 OG SER A 64 O HOH A 301 2.19 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 487 O HOH A 498 4555 2.13 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 GLN A 65 58.38 -115.02 REMARK 500 HIS A 163 -58.98 67.01 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 206 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASN A 18 OD1 REMARK 620 2 ASP A 70 OD2 113.3 REMARK 620 3 HOH A 319 O 109.0 5.7 REMARK 620 4 HOH A 324 O 111.6 7.4 4.3 REMARK 620 5 HOH A 462 O 105.1 8.3 4.6 8.8 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 ASP A 87 OD1 REMARK 620 2 HOH A 318 O 99.3 REMARK 620 3 HOH A 331 O 65.5 161.8 REMARK 620 4 HOH A 419 O 117.3 85.7 92.6 REMARK 620 5 HOH A 426 O 80.5 99.7 88.0 160.6 REMARK 620 6 HOH A 435 O 166.7 85.6 111.5 75.2 86.6 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 201 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 101 OE1 REMARK 620 2 GLU A 139 OE1 97.7 REMARK 620 3 HOH A 340 O 87.6 56.1 REMARK 620 4 HOH A 373 O 87.7 120.0 173.4 REMARK 620 5 HOH A 384 O 89.7 32.4 86.8 88.5 REMARK 620 6 HOH A 420 O 176.0 79.1 92.6 91.8 86.3 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 202 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 101 OE2 REMARK 620 2 SER A 138 O 74.3 REMARK 620 3 SER A 138 OG 71.6 6.1 REMARK 620 4 HOH A 386 O 95.7 45.4 51.5 REMARK 620 5 HOH A 448 O 95.1 53.8 49.7 90.0 REMARK 620 N 1 2 3 4 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 ASP A 142 OD2 REMARK 620 2 HOH A 312 O 74.3 REMARK 620 3 HOH A 354 O 90.8 97.2 REMARK 620 4 HOH A 409 O 162.5 89.9 83.5 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 203 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 326 O REMARK 620 2 HOH A 342 O 90.6 REMARK 620 3 HOH A 467 O 172.1 97.2 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 204 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 328 O REMARK 620 2 HOH A 378 O 82.5 REMARK 620 3 HOH A 412 O 88.7 171.2 REMARK 620 4 HOH A 429 O 173.0 94.3 94.4 REMARK 620 5 HOH A 471 O 93.7 67.9 112.7 79.3 REMARK 620 N 1 2 3 4 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 HOH A 316 O REMARK 620 2 HOH A 346 O 76.1 REMARK 620 3 HOH A 358 O 92.4 94.5 REMARK 620 4 HOH A 381 O 89.6 164.9 90.8 REMARK 620 5 HOH A 463 O 167.6 101.4 75.6 93.6 REMARK 620 6 HOH A 470 O 124.0 84.8 141.8 99.7 67.2 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 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 202 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 203 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 204 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 205 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 206 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 207 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue MG A 208 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC9 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CL A 209 REMARK 800 REMARK 800 SITE_IDENTIFIER: AD1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue DHF A 210 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 6CW7 RELATED DB: PDB REMARK 900 E. COLI DHFR AND TETRAHYDROFOLATE COMPLEX REMARK 900 RELATED ID: 6CQA RELATED DB: PDB REMARK 900 E. COLI DHFR AND AMPQD INHIBITOR COMPLEX DBREF 6CXK A 1 159 UNP P0ABQ5 DYR_ECOL6 1 159 SEQADV 6CXK HIS A 160 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CXK HIS A 161 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CXK HIS A 162 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CXK HIS A 163 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CXK HIS A 164 UNP P0ABQ5 EXPRESSION TAG SEQADV 6CXK 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 MG A 201 1 HET MG A 202 1 HET MG A 203 1 HET MG A 204 1 HET MG A 205 1 HET MG A 206 1 HET MG A 207 1 HET MG A 208 1 HET CL A 209 1 HET DHF A 210 51 HETNAM MG MAGNESIUM ION HETNAM CL CHLORIDE ION HETNAM DHF DIHYDROFOLIC ACID FORMUL 2 MG 8(MG 2+) FORMUL 10 CL CL 1- FORMUL 11 DHF C19 H21 N7 O6 FORMUL 12 HOH *202(H2 O) HELIX 1 AA1 ALA A 9 VAL A 13 5 5 HELIX 2 AA2 LEU A 24 LEU A 36 1 13 HELIX 3 AA3 ARG A 44 GLY A 51 1 8 HELIX 4 AA4 SER A 77 GLY A 86 1 10 HELIX 5 AA5 GLY A 96 LEU A 104 1 9 HELIX 6 AA6 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 MET A 42 O LEU A 62 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 OD1 ASN A 18 MG MG A 206 1555 4555 1.88 LINK OD2 ASP A 70 MG MG A 206 1555 1555 2.03 LINK OD1 ASP A 87 MG MG A 207 1555 1555 2.34 LINK OE1 GLU A 101 MG MG A 201 1555 1555 2.14 LINK OE2 GLU A 101 MG MG A 202 1555 1555 2.36 LINK O SER A 138 MG MG A 202 1555 3545 2.43 LINK OG SER A 138 MG MG A 202 1555 3545 2.41 LINK OE1 GLU A 139 MG MG A 201 1555 3545 1.94 LINK OD2 ASP A 142 MG MG A 205 1555 1555 2.03 LINK MG MG A 201 O HOH A 340 1555 1555 2.18 LINK MG MG A 201 O HOH A 373 1555 3555 2.08 LINK MG MG A 201 O HOH A 384 1555 1555 2.06 LINK MG MG A 201 O HOH A 420 1555 3555 1.99 LINK MG MG A 202 O HOH A 386 1555 1555 2.34 LINK MG MG A 202 O HOH A 448 1555 1555 2.55 LINK MG MG A 203 O HOH A 326 1555 1555 2.05 LINK MG MG A 203 O HOH A 342 1555 1555 2.25 LINK MG MG A 203 O HOH A 467 1555 1555 2.04 LINK MG MG A 204 O HOH A 328 1555 1555 2.09 LINK MG MG A 204 O HOH A 378 1555 1555 2.12 LINK MG MG A 204 O HOH A 412 1555 3445 2.24 LINK MG MG A 204 O HOH A 429 1555 1555 2.02 LINK MG MG A 204 O HOH A 471 1555 3545 2.13 LINK MG MG A 205 O HOH A 312 1555 3645 2.28 LINK MG MG A 205 O HOH A 354 1555 3645 2.13 LINK MG MG A 205 O HOH A 409 1555 3645 1.93 LINK MG MG A 206 O HOH A 319 1555 4455 1.95 LINK MG MG A 206 O HOH A 324 1555 1555 2.38 LINK MG MG A 206 O HOH A 462 1555 1555 2.29 LINK MG MG A 207 O HOH A 318 1555 1455 2.02 LINK MG MG A 207 O HOH A 331 1555 1555 2.48 LINK MG MG A 207 O HOH A 419 1555 1555 2.39 LINK MG MG A 207 O HOH A 426 1555 1555 2.19 LINK MG MG A 207 O HOH A 435 1555 1455 2.10 LINK MG MG A 208 O HOH A 316 1555 1555 2.06 LINK MG MG A 208 O HOH A 346 1555 1555 2.03 LINK MG MG A 208 O HOH A 358 1555 1555 2.21 LINK MG MG A 208 O HOH A 381 1555 3555 1.98 LINK MG MG A 208 O HOH A 463 1555 3655 2.59 LINK MG MG A 208 O HOH A 470 1555 3555 1.86 CISPEP 1 GLY A 95 GLY A 96 0 5.28 SITE 1 AC1 6 GLU A 101 GLU A 139 HOH A 340 HOH A 373 SITE 2 AC1 6 HOH A 384 HOH A 420 SITE 1 AC2 5 GLU A 101 SER A 138 HOH A 386 HOH A 448 SITE 2 AC2 5 HOH A 461 SITE 1 AC3 4 HIS A 124 HOH A 326 HOH A 342 HOH A 467 SITE 1 AC4 6 HIS A 160 HOH A 328 HOH A 378 HOH A 412 SITE 2 AC4 6 HOH A 429 HOH A 471 SITE 1 AC5 5 ASP A 142 HIS A 163 HOH A 312 HOH A 354 SITE 2 AC5 5 HOH A 409 SITE 1 AC6 6 ASN A 18 ASP A 70 HOH A 305 HOH A 319 SITE 2 AC6 6 HOH A 324 HOH A 462 SITE 1 AC7 6 ASP A 87 HOH A 318 HOH A 331 HOH A 419 SITE 2 AC7 6 HOH A 426 HOH A 435 SITE 1 AC8 7 GLU A 120 HOH A 316 HOH A 346 HOH A 358 SITE 2 AC8 7 HOH A 381 HOH A 463 HOH A 470 SITE 1 AC9 5 GLY A 43 HIS A 45 THR A 46 GLY A 96 SITE 2 AC9 5 HOH A 452 SITE 1 AD1 17 ILE A 5 ALA A 6 ALA A 7 MET A 16 SITE 2 AD1 17 MET A 20 ASP A 27 PHE A 31 LYS A 32 SITE 3 AD1 17 ARG A 57 ILE A 94 TYR A 100 THR A 113 SITE 4 AD1 17 HOH A 306 HOH A 308 HOH A 309 HOH A 366 SITE 5 AD1 17 HOH A 388 CRYST1 33.698 51.525 77.421 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 0.029675 0.000000 0.000000 0.00000 SCALE2 0.000000 0.019408 0.000000 0.00000 SCALE3 0.000000 0.000000 0.012916 0.00000