1TC1 - Header Asymmetric Unit

HEADER TRANSFERASE 30-SEP-98 1TC1

TITLE A 1.4 ANGSTROM CRYSTAL STRUCTURE FOR THE HYPOXANTHINE TITLE 2 PHOSPHORIBOSYLTRANSFERASE OF TRYPANOSOMA CRUZI

COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE); COMPND 3 CHAIN: A, B; COMPND 4 EC: 2.4.2.8; COMPND 5 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: TRYPANOSOMA CRUZI; SOURCE 3 ORGANISM_TAXID: 5693; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562

KEYWDS TRANSFERASE,PHOSPHORIBOSYLTRANSFERASE, PURINE SALVAGE, KEYWDS 2 NUCLEOTIDE METABOLISM

EXPDTA X-RAY DIFFRACTION

AUTHOR P.J.FOCIA,S.P.CRAIG III,R.NIEVES-ALICEA,R.J.FLETTERICK, AUTHOR 2 A.E.EAKIN

REVDAT 3 24-FEB-09 1TC1 1 VERSN REVDAT 2 01-APR-03 1TC1 1 JRNL REVDAT 1 07-OCT-99 1TC1 0

JRNL AUTH P.J.FOCIA,S.P.CRAIG 3RD.,R.NIEVES-ALICEA, JRNL AUTH 2 R.J.FLETTERICK,A.E.EAKIN JRNL TITL A 1.4 A CRYSTAL STRUCTURE FOR THE HYPOXANTHINE JRNL TITL 2 PHOSPHORIBOSYLTRANSFERASE OF TRYPANOSOMA CRUZI. JRNL REF BIOCHEMISTRY V. 37 15066 1998 JRNL REFN ISSN 0006-2960 JRNL PMID 9790669 JRNL DOI 10.1021/BI981052S

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 1.41 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.8 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.41 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.0 REMARK 3 NUMBER OF REFLECTIONS : 71678 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) : 0.198 REMARK 3 FREE R VALUE : 0.228 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 6791 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 : 15 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.41 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.44 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 81.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 3143 REMARK 3 BIN R VALUE (WORKING SET) : 0.2460 REMARK 3 BIN FREE R VALUE : 0.2500 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 11.21 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 397 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 : 2869 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 44 REMARK 3 SOLVENT ATOMS : 148 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 14.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 15.60 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) : 0.15 REMARK 3 LOW RESOLUTION CUTOFF (A) : 10.00 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) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.48 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 23.85 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.33 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 : PARHCSDX.PRO REMARK 3 PARAMETER FILE 2 : PARAM.WAT REMARK 3 PARAMETER FILE 3 : FMC.PAR REMARK 3 PARAMETER FILE 4 : MES.PAR REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : TOPH.WAT REMARK 3 TOPOLOGY FILE 3 : FMC.TOP REMARK 3 TOPOLOGY FILE 4 : MES.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1TC1 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-JUL-99. REMARK 100 THE RCSB ID CODE IS RCSB007218.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.75 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.08 REMARK 200 MONOCHROMATOR : SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 300 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 71678 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.410 REMARK 200 RESOLUTION RANGE LOW (A) : 6.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.0 REMARK 200 DATA REDUNDANCY : 3.800 REMARK 200 R MERGE (I) : 0.06100 REMARK 200 R SYM (I) : 0.06100 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 21.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.41 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.44 REMARK 200 COMPLETENESS FOR SHELL (%) : 81.9 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.19600 REMARK 200 R SYM FOR SHELL (I) : 0.19600 REMARK 200 <I/SIGMA(I)> FOR SHELL : 4.700 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 1HGX REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 49.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.60 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 5.75

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 47.04500 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 4460 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 15390 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: 0.0 KCAL/MOL 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 PRO A 2 REMARK 465 ARG A 3 REMARK 465 GLU A 4 REMARK 465 GLY A 83 REMARK 465 GLU A 84 REMARK 465 GLY A 85 REMARK 465 LEU A 86 REMARK 465 THR A 87 REMARK 465 SER A 88 REMARK 465 SER A 89 REMARK 465 GLY A 90 REMARK 465 GLN A 91 REMARK 465 VAL A 189 REMARK 465 TYR A 190 REMARK 465 ALA A 191 REMARK 465 GLU A 192 REMARK 465 ARG A 193 REMARK 465 GLU A 194 REMARK 465 ALA A 195 REMARK 465 ALA A 196 REMARK 465 ARG A 197 REMARK 465 GLN A 198 REMARK 465 LYS A 199 REMARK 465 LYS A 200 REMARK 465 GLN A 201 REMARK 465 ARG A 202 REMARK 465 ALA A 203 REMARK 465 ILE A 204 REMARK 465 GLY A 205 REMARK 465 SER A 206 REMARK 465 ALA A 207 REMARK 465 ASP A 208 REMARK 465 THR A 209 REMARK 465 ASP A 210 REMARK 465 ARG A 211 REMARK 465 ASP A 212 REMARK 465 ALA A 213 REMARK 465 LYS A 214 REMARK 465 ARG A 215 REMARK 465 GLU A 216 REMARK 465 PHE A 217 REMARK 465 HIS A 218 REMARK 465 SER A 219 REMARK 465 LYS A 220 REMARK 465 TYR A 221 REMARK 465 PRO B 2 REMARK 465 ARG B 3 REMARK 465 GLU B 4 REMARK 465 ALA B 191 REMARK 465 GLU B 192 REMARK 465 ARG B 193 REMARK 465 GLU B 194 REMARK 465 ALA B 195 REMARK 465 ALA B 196 REMARK 465 ARG B 197 REMARK 465 GLN B 198 REMARK 465 LYS B 199 REMARK 465 LYS B 200 REMARK 465 GLN B 201 REMARK 465 ARG B 202 REMARK 465 ALA B 203 REMARK 465 ILE B 204 REMARK 465 GLY B 205 REMARK 465 SER B 206 REMARK 465 ALA B 207 REMARK 465 ASP B 208 REMARK 465 THR B 209 REMARK 465 ASP B 210 REMARK 465 ARG B 211 REMARK 465 ASP B 212 REMARK 465 ALA B 213 REMARK 465 LYS B 214 REMARK 465 ARG B 215 REMARK 465 GLU B 216 REMARK 465 PHE B 217 REMARK 465 HIS B 218 REMARK 465 SER B 219 REMARK 465 LYS B 220 REMARK 465 TYR B 221

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 GLU A 6 CG CD OE1 OE2 REMARK 470 GLU A 9 CG CD OE1 OE2 REMARK 470 ARG A 28 CD NE CZ NH1 NH2 REMARK 470 ARG A 99 CD NE CZ NH1 NH2 REMARK 470 GLU A 145 CG CD OE1 OE2 REMARK 470 ARG A 148 CD NE CZ NH1 NH2 REMARK 470 ARG B 28 CD NE CZ NH1 NH2 REMARK 470 LYS B 34 CD CE NZ REMARK 470 ARG B 39 CG CD NE CZ NH1 NH2 REMARK 470 ARG B 131 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 145 CD OE1 OE2 REMARK 470 GLU B 188 CG CD OE1 OE2

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 PRO A 187 C GLU A 188 N 0.228 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 PRO A 187 CA - C - N ANGL. DEV. = -13.3 DEGREES REMARK 500 PRO A 187 O - C - N ANGL. DEV. = 11.5 DEGREES REMARK 500 SER B 81 O - C - N ANGL. DEV. = 10.7 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 GLU A 9 -150.00 -107.91 REMARK 500 TYR A 41 -59.19 71.56 REMARK 500 ASN A 43 54.28 -149.14 REMARK 500 ASP A 115 -78.68 -122.04 REMARK 500 TYR B 41 -57.50 70.45 REMARK 500 ASP B 115 -76.39 -125.14 REMARK 500 REMARK 500 REMARK: NULL 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 PRO A 187 GLU A 188 -130.78 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 B 915 DISTANCE = 6.19 ANGSTROMS REMARK 525 HOH B 937 DISTANCE = 5.18 ANGSTROMS REMARK 525 HOH B 944 DISTANCE = 6.49 ANGSTROMS

REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 FMB A 900 REMARK 610 FMB B 901

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMB A 900 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMB B 901 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MES A 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MES B 801

DBREF 1TC1 A 2 221 UNP Q27796 Q27796_TRYCR 2 221 DBREF 1TC1 B 2 221 UNP Q27796 Q27796_TRYCR 2 221

SEQADV 1TC1 LYS A 23 UNP Q27796 MET 23 VARIANT SEQADV 1TC1 CYS A 66 UNP Q27796 SER 66 VARIANT SEQADV 1TC1 LYS B 23 UNP Q27796 MET 23 VARIANT SEQADV 1TC1 CYS B 66 UNP Q27796 SER 66 VARIANT SEQADV 1TC1 LEU B 86 UNP Q27796 VAL 86 VARIANT

SEQRES 1 A 220 PRO ARG GLU TYR GLU PHE ALA GLU LYS ILE LEU PHE THR SEQRES 2 A 220 GLU GLU GLU ILE ARG THR ARG ILE LYS GLU VAL ALA LYS SEQRES 3 A 220 ARG ILE ALA ASP ASP TYR LYS GLY LYS GLY LEU ARG PRO SEQRES 4 A 220 TYR VAL ASN PRO LEU VAL LEU ILE SER VAL LEU LYS GLY SEQRES 5 A 220 SER PHE MET PHE THR ALA ASP LEU CYS ARG ALA LEU CYS SEQRES 6 A 220 ASP PHE ASN VAL PRO VAL ARG MET GLU PHE ILE CYS VAL SEQRES 7 A 220 SER SER TYR GLY GLU GLY LEU THR SER SER GLY GLN VAL SEQRES 8 A 220 ARG MET LEU LEU ASP THR ARG HIS SER ILE GLU GLY HIS SEQRES 9 A 220 HIS VAL LEU ILE VAL GLU ASP ILE VAL ASP THR ALA LEU SEQRES 10 A 220 THR LEU ASN TYR LEU TYR HIS MET TYR PHE THR ARG ARG SEQRES 11 A 220 PRO ALA SER LEU LYS THR VAL VAL LEU LEU ASP LYS ARG SEQRES 12 A 220 GLU GLY ARG ARG VAL PRO PHE SER ALA ASP TYR VAL VAL SEQRES 13 A 220 ALA ASN ILE PRO ASN ALA PHE VAL ILE GLY TYR GLY LEU SEQRES 14 A 220 ASP TYR ASP ASP THR TYR ARG GLU LEU ARG ASP ILE VAL SEQRES 15 A 220 VAL LEU ARG PRO GLU VAL TYR ALA GLU ARG GLU ALA ALA SEQRES 16 A 220 ARG GLN LYS LYS GLN ARG ALA ILE GLY SER ALA ASP THR SEQRES 17 A 220 ASP ARG ASP ALA LYS ARG GLU PHE HIS SER LYS TYR SEQRES 1 B 220 PRO ARG GLU TYR GLU PHE ALA GLU LYS ILE LEU PHE THR SEQRES 2 B 220 GLU GLU GLU ILE ARG THR ARG ILE LYS GLU VAL ALA LYS SEQRES 3 B 220 ARG ILE ALA ASP ASP TYR LYS GLY LYS GLY LEU ARG PRO SEQRES 4 B 220 TYR VAL ASN PRO LEU VAL LEU ILE SER VAL LEU LYS GLY SEQRES 5 B 220 SER PHE MET PHE THR ALA ASP LEU CYS ARG ALA LEU CYS SEQRES 6 B 220 ASP PHE ASN VAL PRO VAL ARG MET GLU PHE ILE CYS VAL SEQRES 7 B 220 SER SER TYR GLY GLU GLY LEU THR SER SER GLY GLN VAL SEQRES 8 B 220 ARG MET LEU LEU ASP THR ARG HIS SER ILE GLU GLY HIS SEQRES 9 B 220 HIS VAL LEU ILE VAL GLU ASP ILE VAL ASP THR ALA LEU SEQRES 10 B 220 THR LEU ASN TYR LEU TYR HIS MET TYR PHE THR ARG ARG SEQRES 11 B 220 PRO ALA SER LEU LYS THR VAL VAL LEU LEU ASP LYS ARG SEQRES 12 B 220 GLU GLY ARG ARG VAL PRO PHE SER ALA ASP TYR VAL VAL SEQRES 13 B 220 ALA ASN ILE PRO ASN ALA PHE VAL ILE GLY TYR GLY LEU SEQRES 14 B 220 ASP TYR ASP ASP THR TYR ARG GLU LEU ARG ASP ILE VAL SEQRES 15 B 220 VAL LEU ARG PRO GLU VAL TYR ALA GLU ARG GLU ALA ALA SEQRES 16 B 220 ARG GLN LYS LYS GLN ARG ALA ILE GLY SER ALA ASP THR SEQRES 17 B 220 ASP ARG ASP ALA LYS ARG GLU PHE HIS SER LYS TYR

HET FMB A 900 10 HET FMB B 901 10 HET MES A 800 12 HET MES B 801 12

HETNAM FMB FORMYCIN B HETNAM MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID

FORMUL 3 FMB 2(C10 H12 N4 O5) FORMUL 5 MES 2(C6 H13 N O4 S) FORMUL 7 HOH *148(H2 O)

HELIX 1 1 GLU A 15 ASP A 32 1 18 HELIX 2 2 PHE A 55 PHE A 68 1 14 HELIX 3 3 LEU A 118 ARG A 130 1 13 HELIX 4 4 GLU B 15 TYR B 33 1 19 HELIX 5 5 GLY B 53 ASP B 67 5 15 HELIX 6 6 LEU B 118 ARG B 130 1 13 HELIX 7 7 ARG B 144 GLY B 146 5 3

SHEET 1 A 4 VAL A 72 ILE A 77 0 SHEET 2 A 4 LEU A 45 VAL A 50 1 N LEU A 45 O ARG A 73 SHEET 3 A 4 HIS A 106 GLU A 111 1 N HIS A 106 O VAL A 46 SHEET 4 A 4 SER A 134 VAL A 139 1 N SER A 134 O VAL A 107 SHEET 1 B 2 CYS A 78 SER A 80 0 SHEET 2 B 2 ARG A 93 LEU A 96 -1 N LEU A 96 O CYS A 78 SHEET 1 C 2 PHE A 164 ILE A 166 0 SHEET 2 C 2 VAL A 183 ARG A 186 -1 N ARG A 186 O PHE A 164 SHEET 1 D 4 VAL B 72 ILE B 77 0 SHEET 2 D 4 LEU B 45 VAL B 50 1 N LEU B 45 O ARG B 73 SHEET 3 D 4 HIS B 106 GLU B 111 1 N LEU B 108 O VAL B 46 SHEET 4 D 4 SER B 134 VAL B 139 1 N SER B 134 O VAL B 107 SHEET 1 E 2 ALA B 8 ILE B 11 0 SHEET 2 E 2 VAL B 183 LEU B 185 -1 N VAL B 184 O GLU B 9 SHEET 1 F 2 CYS B 78 SER B 81 0 SHEET 2 F 2 VAL B 92 LEU B 96 -1 N LEU B 96 O CYS B 78

CISPEP 1 LEU A 51 LYS A 52 0 -0.22 CISPEP 2 LEU B 51 LYS B 52 0 0.45

SITE 1 AC1 6 ASP A 115 LYS A 143 ALA A 163 PHE A 164 SITE 2 AC1 6 VAL A 165 ASP A 171 SITE 1 AC2 6 ASP B 115 LYS B 143 ALA B 163 PHE B 164 SITE 2 AC2 6 VAL B 165 ASP B 171 SITE 1 AC3 9 GLU A 111 ILE A 113 VAL A 114 ASP A 115 SITE 2 AC3 9 THR A 116 ALA A 117 LEU A 118 THR A 119 SITE 3 AC3 9 LEU A 120 SITE 1 AC4 8 ILE B 113 VAL B 114 ASP B 115 THR B 116 SITE 2 AC4 8 ALA B 117 LEU B 118 THR B 119 LEU B 120

CRYST1 39.500 94.090 52.120 90.00 94.75 90.00 P 1 21 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 0.025316 0.000000 0.002104 0.00000

SCALE2 0.000000 0.010628 0.000000 0.00000

SCALE3 0.000000 0.000000 0.019253 0.00000

MTRIX1 1 0.888793 -0.341844 0.305271 -8.94890 1

MTRIX2 1 -0.338296 -0.938707 -0.066224 5.54390 1

MTRIX3 1 0.309198 -0.044413 -0.949960 61.58640 1