HEADER TRANSCRIPTION REGULATION 20-JAN-98 1A3C TITLE PYRR, THE BACILLUS SUBTILIS PYRIMIDINE BIOSYNTHETIC OPERON REPRESSOR, TITLE 2 DIMERIC FORM COMPND MOL_ID: 1; COMPND 2 MOLECULE: PYRIMIDINE OPERON REGULATORY PROTEIN PYRR; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: PYRR; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS SUBTILIS; SOURCE 3 ORGANISM_TAXID: 1423; SOURCE 4 GENE: PYRR; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: S0408; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PTSROX3 KEYWDS TRANSCRIPTION REGULATION, ATTENUATION PROTEIN, RNA-BINDING PROTEIN, KEYWDS 2 PYRIMIDINE BIOSYNTHESIS, TRANSFERASE, PRTASE, KEYWDS 3 PHOSPHORIBOSYLTRANSFERASE, BIFUNCTIONAL ENZYME EXPDTA X-RAY DIFFRACTION AUTHOR D.R.TOMCHICK,R.J.TURNER,R.W.SWITZER,J.L.SMITH REVDAT 5 07-FEB-24 1A3C 1 REMARK LINK REVDAT 4 21-MAR-18 1A3C 1 REMARK LINK REVDAT 3 16-NOV-11 1A3C 1 VERSN HETATM REVDAT 2 24-FEB-09 1A3C 1 VERSN REVDAT 1 05-AUG-98 1A3C 0 JRNL AUTH D.R.TOMCHICK,R.J.TURNER,R.L.SWITZER,J.L.SMITH JRNL TITL ADAPTATION OF AN ENZYME TO REGULATORY FUNCTION: STRUCTURE OF JRNL TITL 2 BACILLUS SUBTILIS PYRR, A PYR RNA-BINDING ATTENUATION JRNL TITL 3 PROTEIN AND URACIL PHOSPHORIBOSYLTRANSFERASE. JRNL REF STRUCTURE V. 6 337 1998 JRNL REFN ISSN 0969-2126 JRNL PMID 9551555 JRNL DOI 10.1016/S0969-2126(98)00036-7 REMARK 2 REMARK 2 RESOLUTION. 1.60 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 10000000.000 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0010 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.0 REMARK 3 NUMBER OF REFLECTIONS : 24217 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.192 REMARK 3 FREE R VALUE : 0.233 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2376 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 : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.60 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.63 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 98.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1054 REMARK 3 BIN R VALUE (WORKING SET) : 0.2250 REMARK 3 BIN FREE R VALUE : 0.2380 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 9.60 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 117 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 : 1301 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 7 REMARK 3 SOLVENT ATOMS : 257 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 14.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 17.00 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) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : 1.580 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED 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: REMARK 3 THE POSITIONAL COORDINATES OF SM 182, THE SAMARIUM ION ON REMARK 3 THE CRYSTALLOGRAPHIC TWO-FOLD AXIS, WAS HELD AT 0,0,0 REMARK 3 DURING THE REFINEMENT TO PREVENT OSCILLATION OF THE REMARK 3 PROTEIN POSITIONAL COORDINATES. REMARK 3 THE MODEL INCLUDES AN X-PLOR BULK SOLVENT CORRECTION WITH REMARK 3 PARAMETERS SOLRAD=0.25, DENSITY=0.55, B=100. REMARK 3 REMARK 3 LYS 40 HAS PHI/PSI VALUES THAT ARE NORMALLY DISALLOWED. IN REMARK 3 SOME OTHER PRTASES, THIS PEPTIDE IS TYPICALLY FOUND IN THE REMARK 3 CIS CONFORMATION. REMARK 3 REMARK 3 SEVENTEEN RESIDUES ARE MODELED IN ALTERNATIVE REMARK 3 CONFORMATIONS. THESE ARE LEU 8, GLU 10, GLN 11, ARG 14, REMARK 3 ARG 19, GLU 52, GLN 56, THR 70, LYS 100, VAL 107, VAL 122, REMARK 3 ARG 126, SER 128, VAL 136, ILE 145, LYS 152, AND MET 163. REMARK 3 REMARK 3 ONLY THE MAIN CHAIN AND C-BETA ATOMS OF ASN 180 WERE REMARK 3 VISIBLE IN THE ELECTRON DENSITY. REMARK 3 REMARK 3 LYS 40 HAS PHI/PSI VALUES THAT ARE NORMALLY DISALLOWED. IN REMARK 3 SOME OTHER PRTASES, THIS PEPTIDE IS TYPICALLY FOUND IN THE REMARK 3 CIS CONFORMATION. REMARK 4 REMARK 4 1A3C 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_1000170340. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : SEP-95 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.1 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : BM14 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9799 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26609 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.550 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.0 REMARK 200 DATA REDUNDANCY : 3.900 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.08500 REMARK 200 FOR THE DATA SET : 11.7000 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: MAD REMARK 200 SOFTWARE USED: X-PLOR 3.1 REMARK 200 STARTING MODEL: NULL 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): 2.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PROTEIN WAS CRYSTALLIZED FROM 13-16% REMARK 280 PEG 6000, 300 MM AMMONIUM SULFATE, 0.2% BETA-OCTYLGLUCOSIDE, 50 REMARK 280 MM SODIUM SUCCINATE, PH 5.1, AND 1 MM SAMARIUM NITRATE. REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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 X+1/2,Y+1/2,Z REMARK 290 4555 -X+1/2,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 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 38.35000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 28.85000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 38.35000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 28.85000 REMARK 290 SMTRY3 4 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: DIMERIC 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 42.08738 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 42.74303 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 SM SM A 182 LIES ON A SPECIAL POSITION. 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 ASN A 2 REMARK 465 GLY A 30 REMARK 465 MET A 31 REMARK 465 ASN A 32 REMARK 465 ASN A 33 REMARK 465 ASP A 74 REMARK 465 ASP A 75 REMARK 465 LEU A 76 REMARK 465 SER A 77 REMARK 465 LYS A 78 REMARK 465 LYS A 79 REMARK 465 THR A 80 REMARK 465 SER A 81 REMARK 465 GLU A 181 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 ASN A 180 CG OD1 ND2 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 OD1 ASP A 119 O HOH A 429 1.73 REMARK 500 NH2 ARG A 146 O HOH A 425 1.82 REMARK 500 OE1 GLN A 11 O HOH A 431 1.86 REMARK 500 CE LYS A 161 O HOH A 375 1.86 REMARK 500 O HOH A 316 O HOH A 447 1.96 REMARK 500 O HOH A 248 O HOH A 380 1.96 REMARK 500 O HOH A 221 O HOH A 277 2.00 REMARK 500 O HOH A 330 O HOH A 453 2.02 REMARK 500 O HOH A 236 O HOH A 360 2.02 REMARK 500 O HOH A 279 O HOH A 371 2.02 REMARK 500 O HOH A 367 O HOH A 381 2.02 REMARK 500 O THR A 156 O HOH A 242 2.04 REMARK 500 NZ LYS A 161 O HOH A 375 2.07 REMARK 500 O HOH A 256 O HOH A 360 2.10 REMARK 500 NH2 ARG A 27 O HOH A 448 2.10 REMARK 500 O HOH A 308 O HOH A 319 2.11 REMARK 500 O HOH A 244 O HOH A 448 2.13 REMARK 500 O HOH A 344 O HOH A 382 2.15 REMARK 500 OG1 THR A 70 O HOH A 454 2.15 REMARK 500 NZ LYS A 100 O HOH A 432 2.16 REMARK 500 O HOH A 438 O HOH A 440 2.18 REMARK 500 NZ LYS A 100 O HOH A 326 2.18 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 OE2 GLU A 52 O HOH A 268 2555 0.99 REMARK 500 CD GLU A 52 O HOH A 268 2555 1.16 REMARK 500 NE ARG A 14 O HOH A 338 2555 1.61 REMARK 500 OE1 GLU A 52 O HOH A 268 2555 1.80 REMARK 500 CZ ARG A 14 O HOH A 338 2555 2.16 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 LYS A 40 153.93 73.15 REMARK 500 TYR A 109 -97.16 -126.04 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 289 DISTANCE = 9.19 ANGSTROMS REMARK 525 HOH A 301 DISTANCE = 7.45 ANGSTROMS REMARK 525 HOH A 312 DISTANCE = 7.23 ANGSTROMS REMARK 525 HOH A 315 DISTANCE = 5.99 ANGSTROMS REMARK 525 HOH A 325 DISTANCE = 6.26 ANGSTROMS REMARK 525 HOH A 334 DISTANCE = 6.50 ANGSTROMS REMARK 525 HOH A 342 DISTANCE = 5.90 ANGSTROMS REMARK 525 HOH A 344 DISTANCE = 6.38 ANGSTROMS REMARK 525 HOH A 352 DISTANCE = 7.05 ANGSTROMS REMARK 525 HOH A 353 DISTANCE = 6.12 ANGSTROMS REMARK 525 HOH A 355 DISTANCE = 7.69 ANGSTROMS REMARK 525 HOH A 366 DISTANCE = 6.87 ANGSTROMS REMARK 525 HOH A 377 DISTANCE = 8.90 ANGSTROMS REMARK 525 HOH A 382 DISTANCE = 6.63 ANGSTROMS REMARK 525 HOH A 394 DISTANCE = 9.86 ANGSTROMS REMARK 525 HOH A 396 DISTANCE = 5.84 ANGSTROMS REMARK 525 HOH A 400 DISTANCE = 8.29 ANGSTROMS REMARK 525 HOH A 401 DISTANCE = 8.21 ANGSTROMS REMARK 525 HOH A 402 DISTANCE = 7.31 ANGSTROMS REMARK 525 HOH A 413 DISTANCE = 9.70 ANGSTROMS REMARK 525 HOH A 416 DISTANCE = 6.58 ANGSTROMS REMARK 525 HOH A 420 DISTANCE = 7.83 ANGSTROMS REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 SM A 182 SM REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 10 OE2 REMARK 620 2 GLU A 10 OE2 0.0 REMARK 620 3 ASP A 167 OD2 95.3 95.3 REMARK 620 4 ASP A 167 OD2 95.3 95.3 0.0 REMARK 620 5 ASP A 173 OD2 88.1 88.1 82.2 82.2 REMARK 620 6 ASP A 173 OD2 88.1 88.1 82.2 82.2 0.0 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 SM A 183 SM REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 325 O REMARK 620 2 HOH A 335 O 63.8 REMARK 620 3 HOH A 337 O 138.6 109.0 REMARK 620 4 HOH A 422 O 150.3 86.7 51.9 REMARK 620 N 1 2 3 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: PRA REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: DUAL SITE: BINDING SITE FOR SUBSTRATE PRPP IN REMARK 800 THIS AND OTHER MEMBERS OF THE TYPE I PHOSPHORIBOSYLTRANSFERASE REMARK 800 (PRTASE) FAMILY OF ENZYMES, AND SULFATE ION BINDING SITE. REMARK 800 REMARK 800 SITE_IDENTIFIER: SM1 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: SM3+ ION BINDING SITE. THE SM3+ ION LIES ON A REMARK 800 CRYSTALLOGRAPHIC TWO-FOLD AXIS, AND ISOCTAHEDRALLY COORDINATED REMARK 800 BY THE OXYGENS OF THREE AMINO ACID SIDE CHAINS AND THEIR REMARK 800 SYMMETRY RELATED ATOMS. REMARK 800 REMARK 800 SITE_IDENTIFIER: SM2 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: SM3+ ION BINDING SITE. THE SM3+ ION LIES ON A REMARK 800 GENERAL POSITION AND IS COORDINATED BY WATERS. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SM A 182 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SM A 183 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 184 DBREF 1A3C A 1 181 UNP P39765 PYRR_BACSU 1 181 SEQRES 1 A 181 MET ASN GLN LYS ALA VAL ILE LEU ASP GLU GLN ALA ILE SEQRES 2 A 181 ARG ARG ALA LEU THR ARG ILE ALA HIS GLU MET ILE GLU SEQRES 3 A 181 ARG ASN LYS GLY MET ASN ASN CYS ILE LEU VAL GLY ILE SEQRES 4 A 181 LYS THR ARG GLY ILE TYR LEU ALA LYS ARG LEU ALA GLU SEQRES 5 A 181 ARG ILE GLU GLN ILE GLU GLY ASN PRO VAL THR VAL GLY SEQRES 6 A 181 GLU ILE ASP ILE THR LEU TYR ARG ASP ASP LEU SER LYS SEQRES 7 A 181 LYS THR SER ASN ASP GLU PRO LEU VAL LYS GLY ALA ASP SEQRES 8 A 181 ILE PRO VAL ASP ILE THR ASP GLN LYS VAL ILE LEU VAL SEQRES 9 A 181 ASP ASP VAL LEU TYR THR GLY ARG THR VAL ARG ALA GLY SEQRES 10 A 181 MET ASP ALA LEU VAL ASP VAL GLY ARG PRO SER SER ILE SEQRES 11 A 181 GLN LEU ALA VAL LEU VAL ASP ARG GLY HIS ARG GLU LEU SEQRES 12 A 181 PRO ILE ARG ALA ASP TYR ILE GLY LYS ASN ILE PRO THR SEQRES 13 A 181 SER LYS SER GLU LYS VAL MET VAL GLN LEU ASP GLU VAL SEQRES 14 A 181 ASP GLN ASN ASP LEU VAL ALA ILE TYR GLU ASN GLU HET SM A 182 1 HET SM A 183 1 HET SO4 A 184 5 HETNAM SM SAMARIUM (III) ION HETNAM SO4 SULFATE ION FORMUL 2 SM 2(SM 3+) FORMUL 4 SO4 O4 S 2- FORMUL 5 HOH *257(H2 O) HELIX 1 1 GLU A 10 ARG A 27 1 18 HELIX 2 2 THR A 41 GLU A 58 1 18 HELIX 3 3 ARG A 112 VAL A 124 1 13 HELIX 4 4 ASP A 167 ASP A 170 1 4 SHEET 1 A 5 SER A 129 VAL A 134 0 SHEET 2 A 5 LYS A 100 ASP A 105 1 N VAL A 101 O SER A 129 SHEET 3 A 5 ILE A 35 ILE A 39 1 N ILE A 35 O ILE A 102 SHEET 4 A 5 THR A 63 THR A 70 1 N THR A 63 O LEU A 36 SHEET 5 A 5 LEU A 86 ASP A 91 -1 N ASP A 91 O GLU A 66 SHEET 1 B 3 LYS A 161 GLN A 165 0 SHEET 2 B 3 LEU A 174 TYR A 178 -1 N TYR A 178 O LYS A 161 SHEET 3 B 3 LYS A 4 LEU A 8 -1 N LEU A 8 O VAL A 175 LINK OE2AGLU A 10 SM SM A 182 1555 1555 2.31 LINK OE2AGLU A 10 SM SM A 182 1555 2555 2.31 LINK OD2 ASP A 167 SM SM A 182 1555 1555 2.42 LINK OD2 ASP A 167 SM SM A 182 1555 2555 2.42 LINK OD2 ASP A 173 SM SM A 182 1555 1555 2.36 LINK OD2 ASP A 173 SM SM A 182 1555 2555 2.36 LINK SM SM A 183 O HOH A 325 1555 1555 2.32 LINK SM SM A 183 O HOH A 335 1555 1555 2.34 LINK SM SM A 183 O HOH A 337 1555 1555 3.47 LINK SM SM A 183 O HOH A 422 1555 1555 3.46 SITE 1 PRA 10 ASP A 105 ASP A 106 VAL A 107 LEU A 108 SITE 2 PRA 10 TYR A 109 THR A 110 GLY A 111 ARG A 112 SITE 3 PRA 10 THR A 113 LYS A 40 SITE 1 SM1 4 SM A 182 GLU A 10 ASP A 167 ASP A 173 SITE 1 SM2 1 SM A 183 SITE 1 AC1 3 GLU A 10 ASP A 167 ASP A 173 SITE 1 AC2 2 HOH A 325 HOH A 335 SITE 1 AC3 11 LYS A 40 ASP A 105 VAL A 107 LEU A 108 SITE 2 AC3 11 TYR A 109 THR A 110 GLY A 111 ARG A 112 SITE 3 AC3 11 THR A 113 VAL A 114 HOH A 261 CRYST1 76.700 57.700 55.000 90.00 129.00 90.00 C 1 2 1 4 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 0.013038 0.000000 0.010558 0.00000 SCALE2 0.000000 0.017331 0.000000 0.00000 SCALE3 0.000000 0.000000 0.023396 0.00000