HEADER LYASE 10-MAY-99 1QCZ TITLE CRYSTAL STRUCTURE OF E. COLI PURE, AN UNUSUAL MUTASE THAT CATALYZES TITLE 2 THE CONVERSION OF N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE (N5-CAIR) TITLE 3 TO 4-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE (CAIR) IN THE PURINE TITLE 4 BIOSYNTHETIC PATHWAY COMPND MOL_ID: 1; COMPND 2 MOLECULE: N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE MUTASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: PURE; COMPND 5 EC: 4.1.1.21; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: B834(DE3); SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PNC2; SOURCE 8 EXPRESSION_SYSTEM_GENE: PURE KEYWDS THREE-LAYER (ALPHA-BETA-ALPHA) SANDWICH, LYASE EXPDTA X-RAY DIFFRACTION AUTHOR S.E.EALICK,I.I.MATHEWS REVDAT 7 30-OCT-24 1QCZ 1 SEQADV LINK REVDAT 6 31-JAN-18 1QCZ 1 REMARK REVDAT 5 04-OCT-17 1QCZ 1 REMARK REVDAT 4 13-JUL-11 1QCZ 1 VERSN REVDAT 3 24-FEB-09 1QCZ 1 VERSN REVDAT 2 30-JUN-00 1QCZ 1 SOURCE SEQADV REVDAT 1 10-NOV-99 1QCZ 0 JRNL AUTH I.I.MATHEWS,T.J.KAPPOCK,J.STUBBE,S.E.EALICK JRNL TITL CRYSTAL STRUCTURE OF ESCHERICHIA COLI PURE, AN UNUSUAL JRNL TITL 2 MUTASE IN THE PURINE BIOSYNTHETIC PATHWAY. JRNL REF STRUCTURE FOLD.DES. V. 7 1395 1999 JRNL REFN ISSN 0969-2126 JRNL PMID 10574791 JRNL DOI 10.1016/S0969-2126(00)80029-5 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.MEYER,T.J.KAPPOCK,C.OSUJI,J.STUBBE REMARK 1 TITL EVIDENCE FOR THE DIRECT TRANSFER OF THE CARBOXYLATE OF REMARK 1 TITL 2 N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE (N5-CAIR) TO REMARK 1 TITL 3 GENERATE 4-CARBOXY-5-AMINOIMIDAZOLE RIBONUCLEOTIDE CATALYZED REMARK 1 TITL 4 BY ESCHERICHIA COLI PURE, AN N5-CAIR MUTASE REMARK 1 REF BIOCHEMISTRY V. 38 3012 1999 REMARK 1 REFN ISSN 0006-2960 REMARK 1 DOI 10.1021/BI9827159 REMARK 1 REFERENCE 2 REMARK 1 AUTH S.M.FIRESTINE,S.W.POON,E.J.MUELLER,J.STUBBE,V.J.DAVISSON REMARK 1 TITL REACTIONS CATALYZED BY 5-AMINOIMIDAZOLE RIBONUCLEOTIDE REMARK 1 TITL 2 CARBOXYLASES FROM ESCHERICHIA COLI CARBOXYLASES FROM REMARK 1 TITL 3 ESCHERICHIA COLI AND GALLUS GALLUS: A CASE FOR DIVERGENT REMARK 1 TITL 4 CATALYTIC MECHANISMS REMARK 1 REF BIOCHEMISTRY V. 33 11927 1994 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 3 REMARK 1 AUTH E.J.MUELLER,E.MEYER,J.RUDOLPH,V.J.DAVISSON,J.STUBBE REMARK 1 TITL N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE: EVIDENCE FOR A NEW REMARK 1 TITL 2 INTERMEDIATE AND TWO NEW ENZYMATIC ACTIVITIES IN THE DE NOVO REMARK 1 TITL 3 PURINE BIOSYNTHETIC PATHWAY OF ESCHERICHIA COLI REMARK 1 REF BIOCHEMISTRY V. 33 2269 1994 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 4 REMARK 1 AUTH A.A.TIEDEMAN,J.KEYHANI,J.KAMHOLZ,H.A.3D DAUM,J.S.GOTS, REMARK 1 AUTH 2 J.M.SMITH REMARK 1 TITL NUCLEOTIDE SEQUENCE ANALYSIS OF THE PUREK OPERON ENCODING REMARK 1 TITL 2 5'-PHOSPHORIBOSYL-5-AMINOIMIDAZOLE CARBOXYLASE OF REMARK 1 TITL 3 ESCHERICHIA COLI K-12 REMARK 1 REF J.BACTERIOL. V. 171 205 1989 REMARK 1 REFN ISSN 0021-9193 REMARK 1 REFERENCE 5 REMARK 1 AUTH W.WATANABE,G.SAMPEI,A.AIBA,K.MIZOBUCHI REMARK 1 TITL IDENTIFICATION AND SEQUENCE ANALYSIS OF ESCHERICHIA COLI REMARK 1 TITL 2 PURE AND PURK GENES ENCODING REMARK 1 TITL 3 5'-PHOSPHORIBOSYL-5-AMINO-4-IMIDAZOLE CARBOXYLASE FOR DE REMARK 1 TITL 4 NOVO PURINE BIOSYNTHESIS REMARK 1 REF J.BACTERIOL. V. 171 198 1989 REMARK 1 REFN ISSN 0021-9193 REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.843 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.7 REMARK 3 NUMBER OF REFLECTIONS : 24987 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.186 REMARK 3 FREE R VALUE : 0.213 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1252 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 : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.50 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.57 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 83.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2499 REMARK 3 BIN R VALUE (WORKING SET) : 0.2560 REMARK 3 BIN FREE R VALUE : 0.2620 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 133 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 : 1196 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 171 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 14.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 14.20 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) : 0.16 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) : 0.19 REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.230 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.90 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.210 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) : 1.360 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.950 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.150 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.180 ; 2.500 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 1QCZ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY NDB. REMARK 100 THE DEPOSITION ID IS D_1000009088. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-JAN-98 REMARK 200 TEMPERATURE (KELVIN) : 180 REMARK 200 PH : 8.00 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : CHESS REMARK 200 BEAMLINE : F1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.918 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 25072 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 200 DATA REDUNDANCY : 7.700 REMARK 200 R MERGE (I) : 0.07700 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 6.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.58 REMARK 200 COMPLETENESS FOR SHELL (%) : 86.7 REMARK 200 DATA REDUNDANCY IN SHELL : 3.90 REMARK 200 R MERGE FOR SHELL (I) : 0.17200 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: MAD REMARK 200 SOFTWARE USED: SNB REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 55.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.22 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG400, TRIS.HCL, MAGNESIUM CHLORIDE, REMARK 280 PH 8.00, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 18K, REMARK 280 TEMPERATURE 291.0K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 4 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -Y,X,Z REMARK 290 4555 Y,-X,Z REMARK 290 5555 -X,Y,-Z REMARK 290 6555 X,-Y,-Z REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-Z REMARK 290 9555 X+1/2,Y+1/2,Z+1/2 REMARK 290 10555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 11555 -Y+1/2,X+1/2,Z+1/2 REMARK 290 12555 Y+1/2,-X+1/2,Z+1/2 REMARK 290 13555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 14555 X+1/2,-Y+1/2,-Z+1/2 REMARK 290 15555 Y+1/2,X+1/2,-Z+1/2 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 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 56.52000 REMARK 290 SMTRY2 9 0.000000 1.000000 0.000000 56.52000 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 24.70500 REMARK 290 SMTRY1 10 -1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY2 10 0.000000 -1.000000 0.000000 56.52000 REMARK 290 SMTRY3 10 0.000000 0.000000 1.000000 24.70500 REMARK 290 SMTRY1 11 0.000000 -1.000000 0.000000 56.52000 REMARK 290 SMTRY2 11 1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY3 11 0.000000 0.000000 1.000000 24.70500 REMARK 290 SMTRY1 12 0.000000 1.000000 0.000000 56.52000 REMARK 290 SMTRY2 12 -1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY3 12 0.000000 0.000000 1.000000 24.70500 REMARK 290 SMTRY1 13 -1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY2 13 0.000000 1.000000 0.000000 56.52000 REMARK 290 SMTRY3 13 0.000000 0.000000 -1.000000 24.70500 REMARK 290 SMTRY1 14 1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY2 14 0.000000 -1.000000 0.000000 56.52000 REMARK 290 SMTRY3 14 0.000000 0.000000 -1.000000 24.70500 REMARK 290 SMTRY1 15 0.000000 1.000000 0.000000 56.52000 REMARK 290 SMTRY2 15 1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY3 15 0.000000 0.000000 -1.000000 24.70500 REMARK 290 SMTRY1 16 0.000000 -1.000000 0.000000 56.52000 REMARK 290 SMTRY2 16 -1.000000 0.000000 0.000000 56.52000 REMARK 290 SMTRY3 16 0.000000 0.000000 -1.000000 24.70500 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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A OCTAMER WHICH IS GENERATED REMARK 300 FROM CHAIN A BY THE 4-FOLD AND 2-FOLD SYMMETRY 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: OCTAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: OCTAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 32150 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 41210 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -211.0 KCAL/MOL 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 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 4 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 5 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 5 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 5 0.000000 0.000000 -1.000000 -49.41000 REMARK 350 BIOMT1 6 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 6 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 6 0.000000 0.000000 -1.000000 -49.41000 REMARK 350 BIOMT1 7 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT2 7 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 7 0.000000 0.000000 -1.000000 -49.41000 REMARK 350 BIOMT1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 8 0.000000 0.000000 -1.000000 -49.41000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 366 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 367 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 368 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 369 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 370 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 371 LIES ON A SPECIAL POSITION. REMARK 400 REMARK 400 COMPOUND REMARK 400 THE SUBSTRATE SPECIFICITY OF E. COLI PURE FOR N5-CAIR REMARK 400 DIFFERS FROM VERTEBRATE PURE (AIR CARBOXYLASE, REMARK 400 EC 4.1.1.21), WHICH CONVERTS CARBON DIOXIDE AND REMARK 400 5-AMINOIMIDAZOLE RIBONUCLEOTIDE (AIR) INTO REMARK 400 4-CARBOXY-5-AMINOIMIDAZOLE RIBONUCLEOTIDE (CAIR). REMARK 400 DETAILS ARE GIVEN IN REFERENCES 1, 2, AND 3. PLANTS, REMARK 400 YEASTS, AND PROKARYOTES CONTAIN A SEPAATE ENZYME, PURK REMARK 400 (PDB CODE 1B6R), REQUIRED FOR THE PRODUCTION OF N5-CAIR. REMARK 400 E. COLI PURE AND PURK ARE NOT SUBUNITS OF A SINGLE AIR REMARK 400 CARBOXYLASE ENZYME. 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 1 REMARK 465 SER A 2 REMARK 465 SER A 3 REMARK 465 ARG A 4 REMARK 465 ASN A 5 REMARK 465 ASN A 6 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 PRO A 7 CB CG CD REMARK 470 ALA A 169 CA C O CB 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 109 27.62 -79.14 REMARK 500 REMARK 500 REMARK: NULL DBREF 1QCZ A 1 169 UNP P09028 PUR6_ECOLI 1 169 SEQADV 1QCZ MSE A 14 UNP P09028 MET 14 MODIFIED RESIDUE SEQADV 1QCZ MSE A 23 UNP P09028 MET 23 MODIFIED RESIDUE SEQADV 1QCZ MSE A 79 UNP P09028 MET 79 MODIFIED RESIDUE SEQADV 1QCZ MSE A 110 UNP P09028 MET 110 MODIFIED RESIDUE SEQRES 1 A 169 MET SER SER ARG ASN ASN PRO ALA ARG VAL ALA ILE VAL SEQRES 2 A 169 MSE GLY SER LYS SER ASP TRP ALA THR MSE GLN PHE ALA SEQRES 3 A 169 ALA GLU ILE PHE GLU ILE LEU ASN VAL PRO HIS HIS VAL SEQRES 4 A 169 GLU VAL VAL SER ALA HIS ARG THR PRO ASP LYS LEU PHE SEQRES 5 A 169 SER PHE ALA GLU SER ALA GLU GLU ASN GLY TYR GLN VAL SEQRES 6 A 169 ILE ILE ALA GLY ALA GLY GLY ALA ALA HIS LEU PRO GLY SEQRES 7 A 169 MSE ILE ALA ALA LYS THR LEU VAL PRO VAL LEU GLY VAL SEQRES 8 A 169 PRO VAL GLN SER ALA ALA LEU SER GLY VAL ASP SER LEU SEQRES 9 A 169 TYR SER ILE VAL GLN MSE PRO ARG GLY ILE PRO VAL GLY SEQRES 10 A 169 THR LEU ALA ILE GLY LYS ALA GLY ALA ALA ASN ALA ALA SEQRES 11 A 169 LEU LEU ALA ALA GLN ILE LEU ALA THR HIS ASP LYS GLU SEQRES 12 A 169 LEU HIS GLN ARG LEU ASN ASP TRP ARG LYS ALA GLN THR SEQRES 13 A 169 ASP GLU VAL LEU GLU ASN PRO ASP PRO ARG GLY ALA ALA MODRES 1QCZ MSE A 14 MET SELENOMETHIONINE MODRES 1QCZ MSE A 23 MET SELENOMETHIONINE MODRES 1QCZ MSE A 79 MET SELENOMETHIONINE MODRES 1QCZ MSE A 110 MET SELENOMETHIONINE HET MSE A 14 8 HET MSE A 23 8 HET MSE A 79 8 HET MSE A 110 8 HETNAM MSE SELENOMETHIONINE FORMUL 1 MSE 4(C5 H11 N O2 SE) FORMUL 2 HOH *171(H2 O) HELIX 1 1 SER A 16 SER A 18 5 3 HELIX 2 2 ASP A 19 ASN A 34 1 16 HELIX 3 3 THR A 47 ALA A 58 1 12 HELIX 4 4 HIS A 75 LYS A 83 1 9 HELIX 5 5 GLY A 100 GLN A 109 1 10 HELIX 6 6 GLY A 122 THR A 139 1 18 HELIX 7 7 ASP A 141 GLU A 161 1 21 SHEET 1 A 5 HIS A 37 VAL A 41 0 SHEET 2 A 5 VAL A 10 MSE A 14 1 O VAL A 10 N HIS A 38 SHEET 3 A 5 VAL A 65 ALA A 70 1 O VAL A 65 N ALA A 11 SHEET 4 A 5 VAL A 88 PRO A 92 1 N LEU A 89 O ILE A 66 SHEET 5 A 5 GLY A 117 THR A 118 1 N GLY A 117 O VAL A 88 LINK C VAL A 13 N MSE A 14 1555 1555 1.33 LINK C MSE A 14 N GLY A 15 1555 1555 1.33 LINK C THR A 22 N MSE A 23 1555 1555 1.33 LINK C MSE A 23 N GLN A 24 1555 1555 1.33 LINK C GLY A 78 N MSE A 79 1555 1555 1.33 LINK C MSE A 79 N ILE A 80 1555 1555 1.34 LINK C GLN A 109 N MSE A 110 1555 1555 1.33 LINK C MSE A 110 N PRO A 111 1555 1555 1.35 CRYST1 113.040 113.040 49.410 90.00 90.00 90.00 I 4 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 0.008846 0.000000 0.000000 0.00000 SCALE2 0.000000 0.008846 0.000000 0.00000 SCALE3 0.000000 0.000000 0.020239 0.00000