HEADER OXIDOREDUCTASE 16-MAR-99 3CD2 TITLE LIGAND INDUCED CONFORMATIONAL CHANGES IN THE CRYSTAL STRUCTURES OF TITLE 2 PNEUMOCYSTIS CARINII DIHYDROFOLATE REDUCTASE COMPLEXES WITH FOLATE TITLE 3 AND NADP+ COMPND MOL_ID: 1; COMPND 2 MOLECULE: DIHYDROFOLATE REDUCTASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: PCDHFR; COMPND 5 EC: 1.5.1.3; COMPND 6 ENGINEERED: YES; COMPND 7 OTHER_DETAILS: COMPLEXED WITH NADP+ AND FOLATE SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: PNEUMOCYSTIS CARINII; SOURCE 3 ORGANISM_TAXID: 4754; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_PLASMID: PT7-7; SOURCE 7 EXPRESSION_SYSTEM_GENE: C-DNA P.CARINII DHFR KEYWDS OXIDO-REDUCTASE, METHOTREXATE, NADPH, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR V.CODY,N.GALITSKY,D.RAK,J.LUFT,W.PANGBORN,S.QUEENER REVDAT 5 27-DEC-23 3CD2 1 REMARK REVDAT 4 04-APR-18 3CD2 1 REMARK REVDAT 3 24-FEB-09 3CD2 1 VERSN REVDAT 2 06-DEC-00 3CD2 1 DBREF REVDAT 1 29-MAR-00 3CD2 0 JRNL AUTH V.CODY,N.GALITSKY,D.RAK,J.R.LUFT,W.PANGBORN,S.F.QUEENER JRNL TITL LIGAND-INDUCED CONFORMATIONAL CHANGES IN THE CRYSTAL JRNL TITL 2 STRUCTURES OF PNEUMOCYSTIS CARINII DIHYDROFOLATE REDUCTASE JRNL TITL 3 COMPLEXES WITH FOLATE AND NADP+. JRNL REF BIOCHEMISTRY V. 38 4303 1999 JRNL REFN ISSN 0006-2960 JRNL PMID 10194348 JRNL DOI 10.1021/BI982728M REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.N.CHAMPNESS,A.ACHARI,S.P.BALLANTINE,P.K.BRYANT,C.J.DELVES, REMARK 1 AUTH 2 D.K.STAMMERS REMARK 1 TITL THE STRUCTURE OF PNEUMOCYSTIS CARINII DIHYDROFOLATE REMARK 1 TITL 2 REDUCTASE TO 1.9 ANGSTROMS RESOLUTION REMARK 1 REF STRUCTURE (LONDON) V. 2 915 1994 REMARK 2 REMARK 2 RESOLUTION. 2.50 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) : 2.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 96.3 REMARK 3 NUMBER OF REFLECTIONS : 5821 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) : 0.176 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 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL 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) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1686 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 81 REMARK 3 SOLVENT ATOMS : 48 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 19.03 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 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.013 ; 0.020 REMARK 3 ANGLE DISTANCE (A) : 0.044 ; 0.030 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.044 ; 0.050 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.010 ; 0.020 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.150 ; 0.150 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.204 ; 0.500 REMARK 3 MULTIPLE TORSION (A) : 0.266 ; 0.500 REMARK 3 H-BOND (X...Y) (A) : 0.254 ; 0.500 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) : 2.000 ; 3.000 REMARK 3 STAGGERED (DEGREES) : 20.800; 15.000 REMARK 3 TRANSVERSE (DEGREES) : 24.800; 15.000 REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.442 ; 1.750 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.455 ; 2.500 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.270 ; 1.750 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.049 ; 2.500 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 3CD2 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-MAR-99. REMARK 100 THE DEPOSITION ID IS D_1000000664. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : JUL-96 REMARK 200 TEMPERATURE (KELVIN) : 293 REMARK 200 PH : 6.0 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6691 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.500 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 (%) : 96.3 REMARK 200 DATA REDUNDANCY : 2.600 REMARK 200 R MERGE (I) : 0.05200 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 8.00 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL 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 <I/SIGMA(I)> 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: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.97 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.0 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 21.77800 REMARK 290 SMTRY3 2 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 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 LYS A 163 OG SER A 166 2.12 REMARK 500 OH TYR A 17 OD1 ASP A 162 2.14 REMARK 500 OG1 THR A 81 O2X NAP A 207 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 NE2 GLN A 3 O GLU A 164 2556 2.19 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 PHE A 46 C PHE A 46 O 3.464 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 THR A 8 N - CA - CB ANGL. DEV. = 13.0 DEGREES REMARK 500 ALA A 12 N - CA - CB ANGL. DEV. = 9.9 DEGREES REMARK 500 ARG A 21 CG - CD - NE ANGL. DEV. = 16.7 DEGREES REMARK 500 ARG A 21 CD - NE - CZ ANGL. DEV. = 12.6 DEGREES REMARK 500 ARG A 21 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 ARG A 38 CD - NE - CZ ANGL. DEV. = 9.5 DEGREES REMARK 500 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 9.2 DEGREES REMARK 500 ARG A 38 NE - CZ - NH2 ANGL. DEV. = -6.0 DEGREES REMARK 500 PHE A 46 CA - C - O ANGL. DEV. = 28.5 DEGREES REMARK 500 PHE A 46 O - C - N ANGL. DEV. = -66.2 DEGREES REMARK 500 GLU A 50 CA - CB - CG ANGL. DEV. = 19.3 DEGREES REMARK 500 GLU A 50 OE1 - CD - OE2 ANGL. DEV. = -9.9 DEGREES REMARK 500 GLU A 50 CG - CD - OE1 ANGL. DEV. = 15.2 DEGREES REMARK 500 VAL A 55 CB - CA - C ANGL. DEV. = 20.4 DEGREES REMARK 500 LEU A 56 CA - CB - CG ANGL. DEV. = 18.9 DEGREES REMARK 500 ARG A 75 NE - CZ - NH1 ANGL. DEV. = 5.2 DEGREES REMARK 500 GLU A 103 CA - CB - CG ANGL. DEV. = 17.8 DEGREES REMARK 500 TYR A 106 CB - CG - CD2 ANGL. DEV. = -4.4 DEGREES REMARK 500 TYR A 106 CB - CG - CD1 ANGL. DEV. = 4.5 DEGREES REMARK 500 ARG A 119 NE - CZ - NH1 ANGL. DEV. = 13.3 DEGREES REMARK 500 ARG A 119 NE - CZ - NH2 ANGL. DEV. = -6.9 DEGREES REMARK 500 ARG A 140 CD - NE - CZ ANGL. DEV. = -9.8 DEGREES REMARK 500 ARG A 140 NE - CZ - NH1 ANGL. DEV. = -4.4 DEGREES REMARK 500 ARG A 140 NE - CZ - NH2 ANGL. DEV. = 6.7 DEGREES REMARK 500 LEU A 158 CB - CA - C ANGL. DEV. = 11.7 DEGREES REMARK 500 ARG A 161 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 ASP A 162 CB - CG - OD1 ANGL. DEV. = 8.6 DEGREES REMARK 500 GLU A 192 CG - CD - OE2 ANGL. DEV. = -13.7 DEGREES REMARK 500 ARG A 204 CD - NE - CZ ANGL. DEV. = 36.4 DEGREES REMARK 500 ARG A 204 NE - CZ - NH1 ANGL. DEV. = 3.0 DEGREES REMARK 500 ASP A 205 CB - CG - OD1 ANGL. DEV. = 7.1 DEGREES REMARK 500 ASP A 205 CB - CG - OD2 ANGL. DEV. = -6.8 DEGREES REMARK 500 LEU A 206 CA - CB - CG ANGL. DEV. = 14.4 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 ARG A 21 127.14 -171.69 REMARK 500 PRO A 26 -7.77 -58.44 REMARK 500 SER A 48 -4.14 -57.76 REMARK 500 PRO A 66 119.74 -38.43 REMARK 500 SER A 111 -22.10 -37.14 REMARK 500 ASN A 118 -78.02 -101.06 REMARK 500 TYR A 147 57.73 -91.03 REMARK 500 ASP A 193 43.58 39.09 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 PHE A 46 49.89 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: S1 REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: THE BINDING ORIENTATION OF THE PTERIDINE RING OF REMARK 800 FA IN THIS STRUCTURE IS SIMILAR TO THAT OBSERVED IN HDHFR FA REMARK 800 BINARY COMPLEXES. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NAP A 207 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MTX A 307 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1CD2 RELATED DB: PDB REMARK 900 RELATED ID: 2CD2 RELATED DB: PDB REMARK 900 RELATED ID: 4CD2 RELATED DB: PDB DBREF 3CD2 A 1 206 UNP P16184 DYR_PNECA 1 206 SEQRES 1 A 206 MET ASN GLN GLN LYS SER LEU THR LEU ILE VAL ALA LEU SEQRES 2 A 206 THR THR SER TYR GLY ILE GLY ARG SER ASN SER LEU PRO SEQRES 3 A 206 TRP LYS LEU LYS LYS GLU ILE SER TYR PHE LYS ARG VAL SEQRES 4 A 206 THR SER PHE VAL PRO THR PHE ASP SER PHE GLU SER MET SEQRES 5 A 206 ASN VAL VAL LEU MET GLY ARG LYS THR TRP GLU SER ILE SEQRES 6 A 206 PRO LEU GLN PHE ARG PRO LEU LYS GLY ARG ILE ASN VAL SEQRES 7 A 206 VAL ILE THR ARG ASN GLU SER LEU ASP LEU GLY ASN GLY SEQRES 8 A 206 ILE HIS SER ALA LYS SER LEU ASP HIS ALA LEU GLU LEU SEQRES 9 A 206 LEU TYR ARG THR TYR GLY SER GLU SER SER VAL GLN ILE SEQRES 10 A 206 ASN ARG ILE PHE VAL ILE GLY GLY ALA GLN LEU TYR LYS SEQRES 11 A 206 ALA ALA MET ASP HIS PRO LYS LEU ASP ARG ILE MET ALA SEQRES 12 A 206 THR ILE ILE TYR LYS ASP ILE HIS CYS ASP VAL PHE PHE SEQRES 13 A 206 PRO LEU LYS PHE ARG ASP LYS GLU TRP SER SER VAL TRP SEQRES 14 A 206 LYS LYS GLU LYS HIS SER ASP LEU GLU SER TRP VAL GLY SEQRES 15 A 206 THR LYS VAL PRO HIS GLY LYS ILE ASN GLU ASP GLY PHE SEQRES 16 A 206 ASP TYR GLU PHE GLU MET TRP THR ARG ASP LEU HET NAP A 207 48 HET MTX A 307 33 HETNAM NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE HETNAM MTX METHOTREXATE HETSYN NAP 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE FORMUL 2 NAP C21 H28 N7 O17 P3 FORMUL 3 MTX C20 H22 N8 O5 FORMUL 4 HOH *48(H2 O) HELIX 1 1 LYS A 30 SER A 41 1 12 HELIX 2 2 PHE A 46 SER A 48 5 3 HELIX 3 3 ARG A 59 SER A 64 1 6 HELIX 4 4 LEU A 98 THR A 108 1 11 HELIX 5 5 ALA A 126 MET A 133 1 8 HELIX 6 6 LYS A 163 TRP A 165 5 3 HELIX 7 7 HIS A 174 VAL A 181 1 8 SHEET 1 A 8 ILE A 190 GLU A 192 0 SHEET 2 A 8 PHE A 195 THR A 203 -1 N TYR A 197 O ILE A 190 SHEET 3 A 8 LEU A 138 ILE A 146 -1 N ILE A 145 O GLU A 198 SHEET 4 A 8 LEU A 7 THR A 14 1 N LEU A 7 O ASP A 139 SHEET 5 A 8 ILE A 120 GLY A 124 1 N ILE A 120 O THR A 8 SHEET 6 A 8 VAL A 54 GLY A 58 1 N VAL A 54 O PHE A 121 SHEET 7 A 8 ILE A 76 ILE A 80 1 N ILE A 76 O VAL A 55 SHEET 8 A 8 HIS A 93 ALA A 95 1 N HIS A 93 O VAL A 79 CISPEP 1 ARG A 70 PRO A 71 0 -0.04 CISPEP 2 GLY A 124 GLY A 125 0 -0.08 SITE 1 S1 11 ILE A 10 LEU A 25 TRP A 27 GLU A 32 SITE 2 S1 11 ILE A 33 PHE A 36 ILE A 65 PRO A 66 SITE 3 S1 11 ILE A 123 TYR A 129 THR A 144 SITE 1 AC1 23 ALA A 12 ILE A 19 GLY A 20 ARG A 21 SITE 2 AC1 23 SER A 24 LEU A 25 GLY A 58 ARG A 59 SITE 3 AC1 23 LYS A 60 THR A 61 ILE A 80 THR A 81 SITE 4 AC1 23 ARG A 82 ASN A 83 LYS A 96 ILE A 123 SITE 5 AC1 23 GLY A 125 ALA A 126 GLN A 127 LEU A 128 SITE 6 AC1 23 TYR A 129 HOH A 252 MTX A 307 SITE 1 AC2 12 ILE A 10 VAL A 11 LEU A 25 GLU A 32 SITE 2 AC2 12 ILE A 33 PHE A 36 PHE A 69 ARG A 75 SITE 3 AC2 12 ILE A 123 TYR A 129 NAP A 207 HOH A 252 CRYST1 37.425 43.556 61.659 90.00 94.89 90.00 P 1 21 1 2 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 0.026720 0.000000 0.002285 0.00000 SCALE2 0.000000 0.022959 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016277 0.00000