HEADER OXIDO-REDUCTASE 17-MAR-80 2DFR OBSLTE 21-OCT-82 2DFR 4DFR TITLE PROTON MAGNETIC RESONANCE STUDIES ON ESCHERICHIA COLI TITLE 2 DIHYDROFOLATE REDUCTASE. ASSIGNMENT OF HISTIDINE C-2 TITLE 3 PROTONS IN BINARY COMPLEXES WITH FOLATES ON THE BASIS OF TITLE 4 THE CRYSTAL STRUCTURE WITH METHOTREXATE AND ON CHEMICAL TITLE 5 MODIFICATIONS COMPND MOL_ID: 1; COMPND 2 MOLECULE:; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1 KEYWDS OXIDO-REDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR J.T.BOLIN,D.A.MATTHEWS,J.KRAUT REVDAT 1 2DFR 0 JRNL AUTH M.POE,K.HOOGSTEEN,D.A.MATTHEWS JRNL TITL PROTON MAGNETIC RESONANCE STUDIES ON ESCHERICHIA JRNL TITL 2 COLI DIHYDROFOLATE REDUCTASE. ASSIGNMENT OF JRNL TITL 3 HISTIDINE C-2 PROTONS IN BINARY COMPLEXES WITH JRNL TITL 4 FOLATES ON THE BASIS OF THE CRYSTAL STRUCTURE WITH JRNL TITL 5 METHOTREXATE AND ON CHEMICAL MODIFICATIONS JRNL REF J.BIOL.CHEM. V. 254 8143 1979 JRNL REFN ASTM JBCHA3 US ISSN 0021-9258 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH D.A.MATTHEWS,R.A.ALDEN,J.T.BOLIN,S.T.FREER, REMARK 1 AUTH 2 R.HAMLIN,N.XUONG,J.KRAUT,M.POE,M.WILLIAMS, REMARK 1 AUTH 3 K.HOOGSTEEN REMARK 1 TITL DIHYDROFOLATE REDUCTASE. X-RAY STRUCTURE OF THE REMARK 1 TITL 2 BINARY COMPLEX WITH METHOTREXATE REMARK 1 REF SCIENCE V. 197 452 1977 REMARK 1 REFN ASTM SCIEAS US ISSN 0036-8075 REMARK 1 REFERENCE 2 REMARK 1 AUTH D.A.MATTHEWS,R.A.ALDEN,J.T.BOLIN,D.J.FILMAN, REMARK 1 AUTH 2 S.T.FREER,R.HAMLIN,W.G.J.HOL,R.L.KISLIUK, REMARK 1 AUTH 3 E.J.PASTORE,L.T.PLANTE,N.-H.XUONG,J.KRAUT REMARK 1 TITL DIHYDROFOLATE REDUCTASE FROM LACTOBACILLUS CASEI. REMARK 1 TITL 2 X-RAY STRUCTURE OF THE ENZYME-METHOTREXATE-NADPH REMARK 1 TITL 3 COMPLEX REMARK 1 REF J.BIOL.CHEM. V. 253 6946 1978 REMARK 1 REFN ASTM JBCHA3 US ISSN 0021-9258 REMARK 2 REMARK 2 RESOLUTION. NULL ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : NULL REMARK 3 AUTHORS : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : NULL REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : NULL 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) : NULL 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 : 2273 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 66 REMARK 3 SOLVENT ATOMS : 0 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL 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) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL 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) : NULL REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL 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 2DFR COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 5 REMARK 5 2DFR SITES *APT* AND *BPT* COMPRISE THOSE RESIDUES REMARK 5 INTERACTING 2DFR WITH THE PTERIDINE OF THE METHOTREXATE REMARK 5 INHIBITOR IN THE A 2DFR AND B SUBUNITS RESPECTIVELY. SITES REMARK 5 *ANM* AND *BNM* 2DFR COMPRISE THOSE RESIDUES INTERACTING REMARK 5 WITH THE N(10) METHYL 2DFR OF THE METHOTREXATE INHIBITOR IN REMARK 5 THE A AND B SUBUNITS 2DFR RESPECTIVELY. SITES *AAB* AND * REMARK 5 BAB* COMPRISE THOSE 2DFR RESIDUES INTERACTING WITH THE P- REMARK 5 AMINO BENZOYL OF THE 2DFR METHOTREXATE INHIBITOR IN THE A REMARK 5 AND B SUBUNITS 2DFR RESPECTIVELY. SITES *AGL* AND *BGL* REMARK 5 COMPRISE THOSE 2DFR RESIDUES INTERACTING WITH THE GLUTAMATE REMARK 5 OF THE METHOTREXATE 2DFR INHIBITOR IN THE A AND B SUBUNITS REMARK 5 RESPECTIVELY. FOR 2DFR FURTHER DETAILS SEE REFERENCES 2 AND REMARK 5 3 ABOVE. 2DFR REMARK 6 REMARK 6 2DFR THE POSITION OF THE SIDECHAIN OF HIS 45 DEPICTED IN REMARK 6 2DFR REFERENCE 1 ABOVE IS WRONG. THERE ARE DIFFERENCES IN REMARK 6 THE 2DFR CONFORMATION OF THIS RESIDUE IN THE TWO MOLECULES REMARK 6 FOR WHICH 2DFR COORDINATES ARE GIVEN BELOW AND THE REMARK 6 CONFORMATION IN 2DFR MOLECULE A IS MORE LIKELY TO BE REMARK 6 CORRECT. 2DFR REMARK 7 REMARK 7 2DFR CORRECTION. CHANGE RESOLUTION FROM 2.5 TO 2.0 REMARK 7 ANGSTROMS. 2DFR 09-OCT-80. 2DFR REMARK 8 REMARK 8 2DFR CORRECTION. CORRECT RESIDUE IDENTIFICATION ON HELIX REMARK 8 AND 2DFR SHEET RECORDS. 20-APR-81. 2DFR REMARK 9 REMARK 9 2DFR CORRECTION. THIS ENTRY IS OBSOLETE. 14-FEB-84. 2DFR REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL 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 : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL 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) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL 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 (%): 51.94 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.56 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,1/3+Z REMARK 290 3555 -X+Y,-X,2/3+Z REMARK 290 4555 -X,-Y,1/2+Z REMARK 290 5555 Y,-X+Y,5/6+Z REMARK 290 6555 X-Y,X,1/6+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 -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 24.52000 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 49.04000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 36.78000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 61.30000 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 12.26000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT REMARK 300 WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE 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 APPLY THE FOLLOWING TO CHAINS: A, B 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 GLY A 67 REMARK 465 THR A 68 REMARK 465 ASP A 69 REMARK 465 VAL A 119 REMARK 465 GLU A 120 REMARK 465 GLU A 129 REMARK 465 PRO A 130 REMARK 465 ASP A 131 REMARK 465 ASP A 132 REMARK 465 ARG A 158 REMARK 465 ARG A 159 REMARK 465 GLN B 65 REMARK 465 PRO B 66 REMARK 465 GLY B 67 REMARK 465 THR B 68 REMARK 465 GLY B 86 REMARK 465 ASP B 87 REMARK 465 VAL B 88 REMARK 465 GLU B 129 REMARK 465 PRO B 130 REMARK 465 ASP B 131 REMARK 465 ASP B 132 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS(M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 ASP A 11 CG OD1 OD2 REMARK 470 ARG A 12 CG CD NE CZ NH1 NH2 REMARK 470 ASN A 23 OD1 ND2 REMARK 470 ARG A 44 NE CZ NH1 NH2 REMARK 470 ILE A 60 CG1 CG2 CD1 REMARK 470 LYS A 76 CG CD CE NZ REMARK 470 GLU A 80 CG CD OE1 OE2 REMARK 470 ARG A 98 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 106 CG CD CE NZ REMARK 470 GLN A 108 CG CD OE1 NE2 REMARK 470 THR A 123 OG1 CG2 REMARK 470 TYR A 128 C O REMARK 470 VAL A 136 CG1 CG2 REMARK 470 ASN A 142 CB CG OD1 ND2 REMARK 470 LYS A 154 CG CD CE NZ REMARK 470 ASP B 11 CG OD1 OD2 REMARK 470 ARG B 33 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 48 CG CD OE1 OE2 REMARK 470 ILE B 61 CD1 REMARK 470 ARG B 71 NH1 NH2 REMARK 470 VAL B 78 CG1 CG2 REMARK 470 GLU B 80 CG CD OE1 OE2 REMARK 470 ARG B 98 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 118 CG CD OE1 OE2 REMARK 470 GLU B 120 CG CD OE1 OE2 REMARK 470 ASP B 122 CG OD1 OD2 REMARK 470 LYS B 154 CE NZ 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 REMARK 500 OG SER A 3 OE1 GLU A 90 1.46 REMARK 500 NZ LYS A 58 O ALA A 84 2.02 REMARK 500 CE MET B 16 CB VAL B 119 2.03 REMARK 500 NH2 ARG A 57 O2 MTX A 1 2.12 REMARK 500 NH1 ARG B 12 O PHE B 125 2.16 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 NH2 ARG B 159 ND2 ASN B 142 2665 1.57 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),F6.3) REMARK 500 REMARK 500 EXPECTED VALUES: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 TRP B 30 CG TRP B 30 CD2 -0.610 REMARK 500 TRP B 74 CE2 TRP B 74 CZ2 -0.434 REMARK 500 TYR B 111 CG TYR B 111 CD2 -0.482 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 GLY A 95 GLY A 96 -132.11 REMARK 500 GLY A 97 ARG A 98 147.51 SEQRES 1 A 159 MET ILE SER LEU ILE ALA ALA LEU ALA VAL ASP ARG VAL SEQRES 2 A 159 ILE GLY MET GLU ASN ALA MET PRO TRP ASN LEU PRO ALA SEQRES 3 A 159 ASP LEU ALA TRP PHE LYS ARG ASN THR LEU ASP LYS PRO SEQRES 4 A 159 VAL ILE MET GLY ARG HIS THR TRP GLU SER ILE GLY ARG SEQRES 5 A 159 PRO LEU PRO GLY ARG LYS ASN ILE ILE LEU SER SER GLN SEQRES 6 A 159 PRO GLY THR ASP ASP ARG VAL THR TRP VAL LYS SER VAL SEQRES 7 A 159 ASP GLU ALA ILE ALA ALA CYS GLY ASP VAL PRO GLU ILE SEQRES 8 A 159 MET VAL ILE GLY GLY GLY ARG VAL TYR GLU GLN PHE LEU SEQRES 9 A 159 PRO LYS ALA GLN LYS LEU TYR LEU THR HIS ILE ASP ALA SEQRES 10 A 159 GLU VAL GLU GLY ASP THR HIS PHE PRO ASP TYR GLU PRO SEQRES 11 A 159 ASP ASP TRP GLU SER VAL PHE SER GLU PHE HIS ASN ALA SEQRES 12 A 159 ASP ALA GLN ASN SER HIS SER TYR CYS PHE LYS ILE LEU SEQRES 13 A 159 GLU ARG ARG SEQRES 1 B 159 MET ILE SER LEU ILE ALA ALA LEU ALA VAL ASP ARG VAL SEQRES 2 B 159 ILE GLY MET GLU ASN ALA MET PRO TRP ASN LEU PRO ALA SEQRES 3 B 159 ASP LEU ALA TRP PHE LYS ARG ASN THR LEU ASP LYS PRO SEQRES 4 B 159 VAL ILE MET GLY ARG HIS THR TRP GLU SER ILE GLY ARG SEQRES 5 B 159 PRO LEU PRO GLY ARG LYS ASN ILE ILE LEU SER SER GLN SEQRES 6 B 159 PRO GLY THR ASP ASP ARG VAL THR TRP VAL LYS SER VAL SEQRES 7 B 159 ASP GLU ALA ILE ALA ALA CYS GLY ASP VAL PRO GLU ILE SEQRES 8 B 159 MET VAL ILE GLY GLY GLY ARG VAL TYR GLU GLN PHE LEU SEQRES 9 B 159 PRO LYS ALA GLN LYS LEU TYR LEU THR HIS ILE ASP ALA SEQRES 10 B 159 GLU VAL GLU GLY ASP THR HIS PHE PRO ASP TYR GLU PRO SEQRES 11 B 159 ASP ASP TRP GLU SER VAL PHE SER GLU PHE HIS ASN ALA SEQRES 12 B 159 ASP ALA GLN ASN SER HIS SER TYR CYS PHE LYS ILE LEU SEQRES 13 B 159 GLU ARG ARG HET MTX A 1 33 HET MTX B 1 33 HETNAM MTX METHOTREXATE FORMUL 3 MTX 2(C20 H22 N8 O5) HELIX 1 HBA ALA A 26 THR A 35 1 10 HELIX 2 HCA GLY A 43 ILE A 50 1 8 HELIX 3 HEA SER A 77 CYS A 85 1 9 HELIX 4 HFA GLY A 97 PRO A 105 1 9 HELIX 5 HBB ALA B 26 THR B 35 1 10 HELIX 6 HCB GLY B 43 ILE B 50 1 8 HELIX 7 HEB SER B 77 CYS B 85 1 9 HELIX 8 HFB GLY B 97 PRO B 105 1 9 SHEET 1 S1A 8 THR A 73 VAL A 75 0 SHEET 2 S1A 8 ARG A 57 LEU A 62 1 SHEET 3 S1A 8 PRO A 39 GLY A 43 1 SHEET 4 S1A 8 MET A 92 GLY A 95 1 SHEET 5 S1A 8 ILE A 2 LEU A 8 1 SHEET 6 S1A 8 GLN A 108 ILE A 115 1 SHEET 7 S1A 8 HIS A 149 LEU A 156 -1 SHEET 8 S1A 8 VAL A 136 ALA A 143 -1 SHEET 1 S1B 8 THR B 73 VAL B 75 0 SHEET 2 S1B 8 ARG B 57 LEU B 62 1 SHEET 3 S1B 8 PRO B 39 GLY B 43 1 SHEET 4 S1B 8 MET B 92 GLY B 95 1 SHEET 5 S1B 8 ILE B 2 LEU B 8 1 SHEET 6 S1B 8 GLN B 108 ILE B 115 1 SHEET 7 S1B 8 HIS B 149 LEU B 156 -1 SHEET 8 S1B 8 VAL B 136 ALA B 143 -1 SITE 1 APT 8 ILE A 5 ALA A 6 ALA A 7 ASP A 27 SITE 2 APT 8 LEU A 28 PHE A 31 ILE A 94 THR A 113 SITE 1 ANM 1 SER A 49 SITE 1 AAB 3 LEU A 28 ILE A 50 LEU A 54 SITE 1 AGL 2 LYS A 32 ARG A 57 SITE 1 BPT 8 ILE B 5 ALA B 6 ALA B 7 ASP B 27 SITE 2 BPT 8 LEU B 28 PHE B 31 ILE B 94 THR B 113 SITE 1 BNM 1 SER B 49 SITE 1 BAB 3 LEU B 28 ILE B 50 LEU B 54 SITE 1 BGL 2 LYS B 32 ARG B 57 CRYST1 93.200 93.200 73.560 90.00 90.00 120.00 P 61 6 ORIGX1 0.901288 0.520359 0.000000 0.00000 ORIGX2 0.000000 1.040717 0.000000 0.00000 ORIGX3 0.000000 0.000000 0.978793 0.00000 SCALE1 0.010730 0.006195 0.000000 0.00000 SCALE2 0.000000 0.012389 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013594 0.00000 MTRIX1 1 -0.919600 -0.381100 0.093500 58.85000 MTRIX2 1 -0.352300 0.696500 -0.625700 47.67000 MTRIX3 1 0.173900 -0.607500 -0.774400 96.74000