HEADER OXIDOREDUCTASE 26-SEP-02 1MVT TITLE ANALYSIS OF TWO POLYMORPHIC FORMS OF A PYRIDO[2,3-D]PYRIMIDINE N9-C10 TITLE 2 REVERSE-BRIDGE ANTIFOLATE BINARY COMPLEX WITH HUMAN DIHYDROFOLATE TITLE 3 REDUCTASE 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: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21C; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET11A KEYWDS DIHYDROFOLATE REDUCTASE, HUMAN DHFR, ANTIFOLATE, N9-C10 REVERSE KEYWDS 2 BRIDGE PYROLOPYRIMIDINE, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR V.CODY,N.GALITSKY,J.R.LUFT,W.A.PANGBORN,A.GANGJEE REVDAT 4 14-FEB-24 1MVT 1 REMARK REVDAT 3 14-FEB-18 1MVT 1 REMARK REVDAT 2 24-FEB-09 1MVT 1 VERSN REVDAT 1 01-APR-03 1MVT 0 JRNL AUTH V.CODY,N.GALITSKY,J.R.LUFT,W.PANGBORN,A.GANGJEE JRNL TITL ANALYSIS OF TWO POLYMORPHIC FORMS OF A JRNL TITL 2 PYRIDO[2,3-D]PYRIMIDINE N9-C10 REVERSED-BRIDGE ANTIFOLATE JRNL TITL 3 BINARY COMPLEX WITH HUMAN DIHYDROFOLATE REDUCTASE. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 59 654 2003 JRNL REFN ISSN 0907-4449 JRNL PMID 12657784 JRNL DOI 10.1107/S0907444903001951 REMARK 2 REMARK 2 RESOLUTION. 1.80 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) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 85.3 REMARK 3 NUMBER OF REFLECTIONS : 13305 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) : 0.194 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1330 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.2160 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) : 15377 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1502 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 37 REMARK 3 SOLVENT ATOMS : 43 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.87 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) : 0.02 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) : 0.019 ; NULL REMARK 3 ANGLE DISTANCE (A) : 0.050 ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 0.015 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : 0.051 ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1MVT COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-SEP-02. REMARK 100 THE DEPOSITION ID IS D_1000017227. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-FEB-98 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : 6.8 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13305 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 8.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 85.3 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL 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) : 1.90 REMARK 200 COMPLETENESS FOR SHELL (%) : 41.2 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PROTEIN REMARK 200 STARTING MODEL: PDB ENTRY 1MVS REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.01 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.24 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 61% AMMONIUM SULFATE, PHOSPHATE REMARK 280 BUFFER, PH 6.8, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 X+2/3,Y+1/3,Z+1/3 REMARK 290 5555 -Y+2/3,X-Y+1/3,Z+1/3 REMARK 290 6555 -X+Y+2/3,-X+1/3,Z+1/3 REMARK 290 7555 X+1/3,Y+2/3,Z+2/3 REMARK 290 8555 -Y+1/3,X-Y+2/3,Z+2/3 REMARK 290 9555 -X+Y+1/3,-X+2/3,Z+2/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 53.39000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 30.82473 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 14.60667 REMARK 290 SMTRY1 5 -0.500000 -0.866025 0.000000 53.39000 REMARK 290 SMTRY2 5 0.866025 -0.500000 0.000000 30.82473 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 14.60667 REMARK 290 SMTRY1 6 -0.500000 0.866025 0.000000 53.39000 REMARK 290 SMTRY2 6 -0.866025 -0.500000 0.000000 30.82473 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 14.60667 REMARK 290 SMTRY1 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 61.64946 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 29.21333 REMARK 290 SMTRY1 8 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 8 0.866025 -0.500000 0.000000 61.64946 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 29.21333 REMARK 290 SMTRY1 9 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 -0.500000 0.000000 61.64946 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 29.21333 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 0 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 OG SER A 41 OD1 ASP A 110 1.99 REMARK 500 NZ LYS A 184 OD2 ASP A 186 2.14 REMARK 500 OG SER A 76 O1 SO4 A 189 2.16 REMARK 500 O ASP A 168 NE2 GLN A 170 2.19 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 CYS A 6 N - CA - CB ANGL. DEV. = 12.4 DEGREES REMARK 500 CYS A 6 CA - CB - SG ANGL. DEV. = 8.6 DEGREES REMARK 500 MET A 14 CA - CB - CG ANGL. DEV. = 11.2 DEGREES REMARK 500 ASP A 21 CB - CG - OD1 ANGL. DEV. = 10.0 DEGREES REMARK 500 ARG A 28 CD - NE - CZ ANGL. DEV. = 17.1 DEGREES REMARK 500 ARG A 28 NE - CZ - NH2 ANGL. DEV. = 3.2 DEGREES REMARK 500 ARG A 32 NE - CZ - NH1 ANGL. DEV. = -4.5 DEGREES REMARK 500 TYR A 33 CB - CG - CD2 ANGL. DEV. = -11.6 DEGREES REMARK 500 TYR A 33 CB - CG - CD1 ANGL. DEV. = 9.9 DEGREES REMARK 500 TYR A 33 OH - CZ - CE2 ANGL. DEV. = -16.8 DEGREES REMARK 500 ARG A 36 NH1 - CZ - NH2 ANGL. DEV. = 9.4 DEGREES REMARK 500 ARG A 36 NE - CZ - NH2 ANGL. DEV. = -9.7 DEGREES REMARK 500 MET A 37 CG - SD - CE ANGL. DEV. = -12.7 DEGREES REMARK 500 ILE A 51 CA - C - O ANGL. DEV. = -14.6 DEGREES REMARK 500 ILE A 51 O - C - N ANGL. DEV. = 11.8 DEGREES REMARK 500 ARG A 65 CA - CB - CG ANGL. DEV. = 14.0 DEGREES REMARK 500 ARG A 65 NH1 - CZ - NH2 ANGL. DEV. = 8.4 DEGREES REMARK 500 ARG A 65 NE - CZ - NH1 ANGL. DEV. = -7.1 DEGREES REMARK 500 ARG A 77 CA - CB - CG ANGL. DEV. = 14.1 DEGREES REMARK 500 ARG A 77 NE - CZ - NH1 ANGL. DEV. = -4.7 DEGREES REMARK 500 GLN A 84 CB - CA - C ANGL. DEV. = 12.7 DEGREES REMARK 500 GLN A 84 CA - CB - CG ANGL. DEV. = 14.5 DEGREES REMARK 500 HIS A 87 CA - CB - CG ANGL. DEV. = -11.8 DEGREES REMARK 500 ARG A 91 CD - NE - CZ ANGL. DEV. = 10.5 DEGREES REMARK 500 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 7.8 DEGREES REMARK 500 ARG A 91 NE - CZ - NH2 ANGL. DEV. = -4.1 DEGREES REMARK 500 ASP A 94 CB - CG - OD2 ANGL. DEV. = -6.5 DEGREES REMARK 500 ASP A 95 CB - CG - OD1 ANGL. DEV. = -5.7 DEGREES REMARK 500 GLU A 104 OE1 - CD - OE2 ANGL. DEV. = 11.1 DEGREES REMARK 500 GLU A 104 CG - CD - OE2 ANGL. DEV. = -14.2 DEGREES REMARK 500 ASN A 107 CA - CB - CG ANGL. DEV. = 26.7 DEGREES REMARK 500 LYS A 108 CA - CB - CG ANGL. DEV. = 14.3 DEGREES REMARK 500 SER A 118 CA - CB - OG ANGL. DEV. = -16.7 DEGREES REMARK 500 TYR A 121 CB - CG - CD1 ANGL. DEV. = -4.2 DEGREES REMARK 500 LYS A 122 N - CA - CB ANGL. DEV. = 11.1 DEGREES REMARK 500 LYS A 122 CA - CB - CG ANGL. DEV. = 16.0 DEGREES REMARK 500 ASN A 126 CA - CB - CG ANGL. DEV. = 13.3 DEGREES REMARK 500 HIS A 127 CA - CB - CG ANGL. DEV. = 10.2 DEGREES REMARK 500 ASP A 145 CB - CG - OD2 ANGL. DEV. = 8.9 DEGREES REMARK 500 THR A 146 CA - CB - CG2 ANGL. DEV. = -12.0 DEGREES REMARK 500 PHE A 147 CB - CG - CD2 ANGL. DEV. = -4.3 DEGREES REMARK 500 PHE A 147 CB - CG - CD1 ANGL. DEV. = 5.8 DEGREES REMARK 500 ILE A 151 O - C - N ANGL. DEV. = 11.1 DEGREES REMARK 500 LEU A 153 CB - CA - C ANGL. DEV. = 12.5 DEGREES REMARK 500 LYS A 155 C - N - CA ANGL. DEV. = 17.7 DEGREES REMARK 500 TYR A 162 CB - CG - CD2 ANGL. DEV. = 4.0 DEGREES REMARK 500 TYR A 162 CB - CG - CD1 ANGL. DEV. = -5.2 DEGREES REMARK 500 ASP A 168 CB - CG - OD1 ANGL. DEV. = 5.8 DEGREES REMARK 500 GLU A 172 CG - CD - OE1 ANGL. DEV. = 13.4 DEGREES REMARK 500 GLU A 172 CG - CD - OE2 ANGL. DEV. = -14.9 DEGREES REMARK 500 REMARK 500 THIS ENTRY HAS 51 ANGLE DEVIATIONS. 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 GLU A 101 -24.44 -175.82 REMARK 500 GLN A 102 -167.62 -69.88 REMARK 500 PRO A 103 -83.88 -39.10 REMARK 500 LEU A 105 -40.34 137.94 REMARK 500 ASP A 110 -103.88 -93.33 REMARK 500 LYS A 155 -41.56 167.33 REMARK 500 ASN A 185 113.69 -167.14 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 SO4 A 188 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 189 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DTM A 187 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1MVS RELATED DB: PDB REMARK 900 PYRIDO[2,3-D]PYRIMIDINE N9-C10 REVERSE-BRIDGE ANTIFOLATE BINARY REMARK 900 COMPLEX WITH HUMAN DIHYDROFOLATE REDUCTASE DBREF 1MVT A 0 186 UNP P00374 DYR_HUMAN 0 186 SEQRES 1 A 187 MET VAL GLY SER LEU ASN CYS ILE VAL ALA VAL SER GLN SEQRES 2 A 187 ASN MET GLY ILE GLY LYS ASN GLY ASP LEU PRO TRP PRO SEQRES 3 A 187 PRO LEU ARG ASN GLU PHE ARG TYR PHE GLN ARG MET THR SEQRES 4 A 187 THR THR SER SER VAL GLU GLY LYS GLN ASN LEU VAL ILE SEQRES 5 A 187 MET GLY LYS LYS THR TRP PHE SER ILE PRO GLU LYS ASN SEQRES 6 A 187 ARG PRO LEU LYS GLY ARG ILE ASN LEU VAL LEU SER ARG SEQRES 7 A 187 GLU LEU LYS GLU PRO PRO GLN GLY ALA HIS PHE LEU SER SEQRES 8 A 187 ARG SER LEU ASP ASP ALA LEU LYS LEU THR GLU GLN PRO SEQRES 9 A 187 GLU LEU ALA ASN LYS VAL ASP MET VAL TRP ILE VAL GLY SEQRES 10 A 187 GLY SER SER VAL TYR LYS GLU ALA MET ASN HIS PRO GLY SEQRES 11 A 187 HIS LEU LYS LEU PHE VAL THR ARG ILE MET GLN ASP PHE SEQRES 12 A 187 GLU SER ASP THR PHE PHE PRO GLU ILE ASP LEU GLU LYS SEQRES 13 A 187 TYR LYS LEU LEU PRO GLU TYR PRO GLY VAL LEU SER ASP SEQRES 14 A 187 VAL GLN GLU GLU LYS GLY ILE LYS TYR LYS PHE GLU VAL SEQRES 15 A 187 TYR GLU LYS ASN ASP HET SO4 A 188 5 HET SO4 A 189 5 HET DTM A 187 27 HETNAM SO4 SULFATE ION HETNAM DTM 2,4-DIAMINO-6-[N-(3',4',5'-TRIMETHOXYBENZYL)-N- HETNAM 2 DTM METHYLAMINO]PYRIDO[2,3-D]PYRIMIDINE FORMUL 2 SO4 2(O4 S 2-) FORMUL 4 DTM C18 H22 N6 O3 FORMUL 5 HOH *43(H2 O) HELIX 1 1 LEU A 27 THR A 40 1 14 HELIX 2 2 LYS A 54 ILE A 60 1 7 HELIX 3 3 PRO A 61 ARG A 65 5 5 HELIX 4 4 SER A 92 THR A 100 1 9 HELIX 5 5 GLN A 102 ASN A 107 1 6 HELIX 6 6 GLY A 117 ASN A 126 1 10 SHEET 1 A 8 PHE A 88 SER A 90 0 SHEET 2 A 8 ARG A 70 LEU A 75 1 N VAL A 74 O PHE A 88 SHEET 3 A 8 GLN A 47 GLY A 53 1 N VAL A 50 O ILE A 71 SHEET 4 A 8 VAL A 109 ILE A 114 1 O TRP A 113 N LEU A 49 SHEET 5 A 8 LEU A 4 SER A 11 1 N ASN A 5 O ILE A 114 SHEET 6 A 8 LEU A 131 ILE A 138 1 O THR A 136 N VAL A 10 SHEET 7 A 8 ILE A 175 GLU A 183 -1 O GLU A 180 N VAL A 135 SHEET 8 A 8 LYS A 157 LEU A 158 -1 N LYS A 157 O GLU A 183 SHEET 1 B 8 PHE A 88 SER A 90 0 SHEET 2 B 8 ARG A 70 LEU A 75 1 N VAL A 74 O PHE A 88 SHEET 3 B 8 GLN A 47 GLY A 53 1 N VAL A 50 O ILE A 71 SHEET 4 B 8 VAL A 109 ILE A 114 1 O TRP A 113 N LEU A 49 SHEET 5 B 8 LEU A 4 SER A 11 1 N ASN A 5 O ILE A 114 SHEET 6 B 8 LEU A 131 ILE A 138 1 O THR A 136 N VAL A 10 SHEET 7 B 8 ILE A 175 GLU A 183 -1 O GLU A 180 N VAL A 135 SHEET 8 B 8 GLN A 170 GLU A 172 -1 N GLN A 170 O TYR A 177 SHEET 1 C 2 GLY A 15 GLY A 17 0 SHEET 2 C 2 THR A 146 PHE A 147 -1 N THR A 146 O GLY A 17 CISPEP 1 ARG A 65 PRO A 66 0 -0.55 CISPEP 2 GLY A 116 GLY A 117 0 1.49 SITE 1 AC1 8 GLY A 53 LYS A 54 LYS A 55 THR A 56 SITE 2 AC1 8 GLY A 117 VAL A 120 HOH A 201 HOH A 207 SITE 1 AC2 4 SER A 76 ARG A 77 GLU A 78 HOH A 207 SITE 1 AC3 14 ILE A 7 VAL A 8 ALA A 9 ASP A 21 SITE 2 AC3 14 LEU A 22 GLU A 30 PHE A 31 PHE A 34 SITE 3 AC3 14 PRO A 61 ASN A 64 VAL A 115 TYR A 121 SITE 4 AC3 14 THR A 136 HOH A 195 CRYST1 106.780 106.780 43.820 90.00 90.00 120.00 H 3 9 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 0.009365 0.005407 0.000000 0.00000 SCALE2 0.000000 0.010814 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022821 0.00000