PDB Short entry for 1VIF HEADER OXIDOREDUCTASE 03-OCT-96 1VIF TITLE STRUCTURE OF DIHYDROFOLATE REDUCTASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: R67 DHFR; COMPND 5 EC: 1.5.1.3; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 STRAIN: TMP-RESISTANT, CONTAINING R67 DHFR OVERPRODUCING PLASMID SOURCE 5 PLZ1; SOURCE 6 GENE: SYNTHETIC GENE; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: BACTERIA; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PLZ1 KEYWDS OXIDOREDUCTASE, NADP, TRIMETHOPRIM RESISTANCE METHOTREXATE KEYWDS 2 RESISTANCE, ONE-CARBON METABOLISM, PLASMID EXPDTA X-RAY DIFFRACTION AUTHOR N.NARAYANA,D.A.MATTHEWS,E.E.HOWELL,N.-H.XUONG REVDAT 4 09-AUG-23 1VIF 1 REMARK REVDAT 3 24-FEB-09 1VIF 1 VERSN REVDAT 2 01-APR-03 1VIF 1 JRNL REVDAT 1 22-OCT-97 1VIF 0 JRNL AUTH N.NARAYANA,D.A.MATTHEWS,E.E.HOWELL,X.NGUYEN-HUU JRNL TITL A PLASMID-ENCODED DIHYDROFOLATE REDUCTASE FROM JRNL TITL 2 TRIMETHOPRIM-RESISTANT BACTERIA HAS A NOVEL D2-SYMMETRIC JRNL TITL 3 ACTIVE SITE. JRNL REF NAT.STRUCT.BIOL. V. 2 1018 1995 JRNL REFN ISSN 1072-8368 JRNL PMID 7583655 JRNL DOI 10.1038/NSB1195-1018 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.C.HOLLAND,C.E.LINN,E.DIGIAMMARINO,R.NICHOLS,E.E.HOWELL REMARK 1 TITL DOES R67 DIHYDROFOLATE REDUCTASE POSSESS A PROTON DONOR? REMARK 1 REF ADV.EXP.MED.BIOL. V. 338 493 1993 REMARK 1 REFN ISSN 0065-2598 REMARK 1 REFERENCE 2 REMARK 1 AUTH L.J.REECE,R.NICHOLS,R.C.OGDEN,E.E.HOWELL REMARK 1 TITL CONSTRUCTION OF A SYNTHETIC GENE FOR AN R-PLASMID-ENCODED REMARK 1 TITL 2 DIHYDROFOLATE REDUCTASE AND STUDIES ON THE ROLE OF THE REMARK 1 TITL 3 N-TERMINUS IN THE PROTEIN REMARK 1 REF BIOCHEMISTRY V. 30 10895 1991 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 3 REMARK 1 AUTH D.A.MATTHEWS,S.L.SMITH,D.P.BACCANARI,J.J.BURCHALL, REMARK 1 AUTH 2 S.J.OATLEY,J.KRAUT REMARK 1 TITL CRYSTAL STRUCTURE OF A NOVEL TRIMETHOPRIM-RESISTANT REMARK 1 TITL 2 DIHYDROFOLATE REDUCTASE SPECIFIED IN ESCHERICHIA COLI BY REMARK 1 TITL 3 R-PLASMID R67 REMARK 1 REF BIOCHEMISTRY V. 25 4194 1986 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 4 REMARK 1 AUTH D.STONE,S.L.SMITH REMARK 1 TITL THE AMINO ACID SEQUENCE OF THE TRIMETHOPRIM-RESISTANT REMARK 1 TITL 2 DIHYDROFOLATE REDUCTASE SPECIFIED IN ESCHERICHIA COLI BY REMARK 1 TITL 3 R-PLASMID R67 REMARK 1 REF J.BIOL.CHEM. V. 254 10857 1979 REMARK 1 REFN ISSN 0021-9258 REMARK 1 REFERENCE 5 REMARK 1 AUTH M.P.FLEMING,N.DATTA,R.N.GRUNEBERG REMARK 1 TITL TRIMETHOPRIM RESISTANCE DETERMINED BY R FACTORS REMARK 1 REF BR.MED.J. V. 1 726 1972 REMARK 1 REFN ISSN 0007-1447 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 6040 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 SET) : 0.176 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL 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 : 457 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 13 REMARK 3 SOLVENT ATOMS : 44 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 10.70 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) : 0.25 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : 10.0 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) : 0.014 REMARK 3 BOND ANGLES (DEGREES) : 2.500 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 18.50 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 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 1VIF 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_1000177042. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-MAR-92 REMARK 200 TEMPERATURE (KELVIN) : 277 REMARK 200 PH : 6.8-8.0 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 RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : XUONG-HAMLIN MULTIWIRE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : UCSD REMARK 200 DATA SCALING SOFTWARE : UCSD REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6094 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 12.00 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.05500 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 12.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.86 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 8.00 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.16000 REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.200 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: ISOMORPHOUS REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 1VIE REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.00 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALS WERE GROWN FROM HANGING- REMARK 280 DROPS CONTAINING PROTEIN AT A FINAL CONCENTRATION OF ABOUT 18 MG/ REMARK 280 ML, 30 MM FOLATE, 40 MM BICINE BUFFER AT PH 8.0 AND 18% 2-METHYL- REMARK 280 2,4-PENTANE DIOL (MPD). DROPS WERE EQUILIBRATED AGAINST A REMARK 280 RESERVOIR CONTAINING 100 MM KH2PO4 BUFFER AT PH 6.8 AND 50% MPD. REMARK 280 THE CRYSTALS WERE FURTHER SOAKED IN 100 MM FOLATE FOR 3 DAYS., REMARK 280 VAPOR DIFFUSION - HANGING DROP, VAPOR DIFFUSION, HANGING DROP REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 41 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 3555 -Y,X+1/2,Z+1/4 REMARK 290 4555 Y+1/2,-X,Z+3/4 REMARK 290 5555 -X+1/2,Y,-Z+3/4 REMARK 290 6555 X,-Y+1/2,-Z+1/4 REMARK 290 7555 Y+1/2,X+1/2,-Z+1/2 REMARK 290 8555 -Y,-X,-Z REMARK 290 9555 X+1/2,Y+1/2,Z+1/2 REMARK 290 10555 -X,-Y,Z REMARK 290 11555 -Y+1/2,X,Z+3/4 REMARK 290 12555 Y,-X+1/2,Z+1/4 REMARK 290 13555 -X,Y+1/2,-Z+1/4 REMARK 290 14555 X+1/2,-Y,-Z+3/4 REMARK 290 15555 Y,X,-Z REMARK 290 16555 -Y+1/2,-X+1/2,-Z+1/2 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 34.37500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 34.37500 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 26.29500 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 13.14750 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 34.37500 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 39.44250 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 39.44250 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 34.37500 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 13.14750 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 34.37500 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 26.29500 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY2 9 0.000000 1.000000 0.000000 34.37500 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 26.29500 REMARK 290 SMTRY1 10 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 10 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 11 0.000000 -1.000000 0.000000 34.37500 REMARK 290 SMTRY2 11 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 1.000000 39.44250 REMARK 290 SMTRY1 12 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 12 -1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY3 12 0.000000 0.000000 1.000000 13.14750 REMARK 290 SMTRY1 13 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 13 0.000000 1.000000 0.000000 34.37500 REMARK 290 SMTRY3 13 0.000000 0.000000 -1.000000 13.14750 REMARK 290 SMTRY1 14 1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY2 14 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 14 0.000000 0.000000 -1.000000 39.44250 REMARK 290 SMTRY1 15 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 15 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 15 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 16 0.000000 -1.000000 0.000000 34.37500 REMARK 290 SMTRY2 16 -1.000000 0.000000 0.000000 34.37500 REMARK 290 SMTRY3 16 0.000000 0.000000 -1.000000 26.29500 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: TETRAMERIC 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 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 52.59000 REMARK 350 BIOMT1 3 -1.000000 0.000000 0.000000 68.75000 REMARK 350 BIOMT2 3 0.000000 -1.000000 0.000000 68.75000 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 -1.000000 0.000000 68.75000 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 68.75000 REMARK 350 BIOMT3 4 0.000000 0.000000 -1.000000 52.59000 REMARK 400 REMARK 400 COMPOUND REMARK 400 R67 PLASMID-ENCODED DHFR HAS 78 AMINO ACID RESIDUES. THE REMARK 400 PRESENT STUDY DESCRIBES THE TRUNCATED FORM OF R67 DHFR REMARK 400 (62 RESIDUES) OBTAINED BY CLEAVING THE FULL-LENGTH PROTEIN REMARK 400 AT PHE 16 USING CHYMOTRYPSIN. 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 VAL A 17 REMARK 465 PHE A 18 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 N5 FOL A 1 O HOH A 121 2.16 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 ND2 ASN A 21 ND2 ASN A 21 8667 1.47 REMARK 500 OG1 THR A 48 O HOH A 111 13646 1.65 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 SER A 20 C ASN A 21 N 0.238 REMARK 500 ALA A 73 C LEU A 74 N -0.144 REMARK 500 REMARK 500 REMARK: NULL 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 ASP A 28 CB - CG - OD1 ANGL. DEV. = -6.1 DEGREES REMARK 500 ASP A 28 CB - CG - OD2 ANGL. DEV. = 6.8 DEGREES REMARK 500 ARG A 31 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 ARG A 76 NE - CZ - NH1 ANGL. DEV. = 4.2 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 SER A 20 15.03 -63.60 REMARK 500 ASN A 21 -36.98 -170.46 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 LEU A 74 -11.00 REMARK 500 REMARK 500 REMARK: NULL REMARK 600 REMARK 600 HETEROGEN REMARK 600 REMARK 600 THE TWO MUTUALLY EXCLUSIVE FOLATE MOLECULES AT 1/4 REMARK 600 OCCUPANCY ARE LABELLED AS FOL 1 WITH ALTERNATE LOCATIONS A REMARK 600 AND B. HOWEVER, DENSITY IS SEEN ONLY FOR THE PTERIDINE REMARK 600 PORTION. THUS ATOMIC COORDINATES FOR THE PARA AMINO REMARK 600 BENZOYL GLUTAMATE MOIETY ARE NOT FOUND IN THIS ENTRY. REMARK 600 REMARK 600 THE WATER MOLECULE 124 HAS 1/2 OCCUPANCY. IT OCCUPIES THE REMARK 600 POSITION OF O4 OF THE PTERIDINE RING IN ITS ABSENCE. REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 FOL A 1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FOL A 1 DBREF 1VIF A 17 78 UNP P00383 DYR21_ECOLI 17 78 SEQRES 1 A 62 VAL PHE PRO SER ASN ALA THR PHE GLY MET GLY ASP ARG SEQRES 2 A 62 VAL ARG LYS LYS SER GLY ALA ALA TRP GLN GLY GLN ILE SEQRES 3 A 62 VAL GLY TRP TYR CYS THR ASN LEU THR PRO GLU GLY TYR SEQRES 4 A 62 ALA VAL GLU SER GLU ALA HIS PRO GLY SER VAL GLN ILE SEQRES 5 A 62 TYR PRO VAL ALA ALA LEU GLU ARG ILE ASN HET FOL A 1 26 HETNAM FOL FOLIC ACID FORMUL 2 FOL C19 H19 N7 O6 FORMUL 3 HOH *44(H2 O) HELIX 1 1 VAL A 71 ALA A 73 5 3 SHEET 1 A 5 LEU A 74 ARG A 76 0 SHEET 2 A 5 ARG A 29 LYS A 32 -1 N ARG A 31 O GLU A 75 SHEET 3 A 5 GLN A 39 TYR A 46 -1 N GLY A 40 O VAL A 30 SHEET 4 A 5 GLY A 54 SER A 59 -1 N GLU A 58 O GLN A 41 SHEET 5 A 5 VAL A 66 PRO A 70 -1 N TYR A 69 O TYR A 55 CISPEP 1 ILE A 77 ASN A 78 0 3.13 SITE 1 AC1 4 GLN A 67 ILE A 68 TYR A 69 HOH A 121 CRYST1 68.750 68.750 52.590 90.00 90.00 90.00 I 41 2 2 16 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 0.014545 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014545 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019015 0.00000