HEADER TETRAHYDROBIOPTERIN BIOSYNTHESIS 16-SEP-95 1GTQ TITLE 6-PYRUVOYL TETRAHYDROPTERIN SYNTHASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: 6-PYRUVOYL TETRAHYDROPTERIN SYNTHASE; COMPND 3 CHAIN: A, B; COMPND 4 EC: 4.6.1.10; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS RATTUS; SOURCE 3 ORGANISM_COMMON: BLACK RAT; SOURCE 4 ORGANISM_TAXID: 10117; SOURCE 5 ORGAN: LIVER; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS PHOSPHATE ELIMINATION, PTERINE SYNTHESIS, TETRAHYDROBIOPTERIN KEYWDS 2 BIOSYNTHESIS EXPDTA X-RAY DIFFRACTION AUTHOR H.NAR,R.HUBER,C.W.HEIZMANN,B.THOENY,D.BUERGISSER REVDAT 4 07-FEB-24 1GTQ 1 REMARK LINK REVDAT 3 24-FEB-09 1GTQ 1 VERSN REVDAT 2 01-APR-03 1GTQ 1 JRNL REVDAT 1 03-APR-96 1GTQ 0 JRNL AUTH H.NAR,R.HUBER,C.W.HEIZMANN,B.THONY,D.BURGISSER JRNL TITL THREE-DIMENSIONAL STRUCTURE OF 6-PYRUVOYL TETRAHYDROPTERIN JRNL TITL 2 SYNTHASE, AN ENZYME INVOLVED IN TETRAHYDROBIOPTERIN JRNL TITL 3 BIOSYNTHESIS. JRNL REF EMBO J. V. 13 1255 1994 JRNL REFN ISSN 0261-4189 JRNL PMID 8137809 REMARK 2 REMARK 2 RESOLUTION. 2.30 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) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 93.2 REMARK 3 NUMBER OF REFLECTIONS : 21405 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) : 0.204 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 : 2202 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 80 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 15.90 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) : 0.01 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) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.690 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 25.39 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.460 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 1GTQ 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_1000173709. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-JUN-93 REMARK 200 TEMPERATURE (KELVIN) : 277 REMARK 200 PH : 9.0 REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.54 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 22612 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 21.200 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.5 REMARK 200 DATA REDUNDANCY : 8.400 REMARK 200 R MERGE (I) : 0.11600 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL 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 (%): 70.62 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.19 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 9.0 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 3 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z REMARK 290 6555 -X,-X+Y,-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 0.00000 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 0.00000 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 -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 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: HEXAMERIC 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 350 BIOMT1 2 -0.500000 -0.866025 0.000000 122.30000 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 -0.500000 0.866025 0.000000 61.15000 REMARK 350 BIOMT2 3 -0.866025 -0.500000 0.000000 105.91491 REMARK 350 BIOMT3 3 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 VAL A 5 REMARK 465 GLY A 6 REMARK 465 VAL B 5 REMARK 465 GLY B 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 LEU A 7 CG CD1 CD2 REMARK 470 LEU B 7 CG CD1 CD2 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 HH11 ARG A 9 HH TYR A 141 2655 1.23 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 ASN A 44 122.02 -36.93 REMARK 500 ILE A 83 -61.89 -121.84 REMARK 500 SER A 104 48.65 -80.15 REMARK 500 ILE B 83 -58.90 -132.46 REMARK 500 SER B 104 48.32 -79.89 REMARK 500 REMARK 500 REMARK: NULL 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 ZN A 200 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 23 NE2 REMARK 620 2 HIS A 48 NE2 80.1 REMARK 620 3 HIS A 50 NE2 93.4 97.6 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN B 200 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 23 NE2 REMARK 620 2 HIS B 48 NE2 88.9 REMARK 620 3 HIS B 50 NE2 94.7 94.3 REMARK 620 N 1 2 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 200 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 200 DBREF 1GTQ A 5 144 UNP P27213 PTPS_RAT 5 144 DBREF 1GTQ B 5 144 UNP P27213 PTPS_RAT 5 144 SEQRES 1 A 140 VAL GLY LEU ARG ARG ARG ALA ARG LEU SER ARG LEU VAL SEQRES 2 A 140 SER PHE SER ALA SER HIS ARG LEU HIS SER PRO SER LEU SEQRES 3 A 140 SER ALA GLU GLU ASN LEU LYS VAL PHE GLY LYS CYS ASN SEQRES 4 A 140 ASN PRO ASN GLY HIS GLY HIS ASN TYR LYS VAL VAL VAL SEQRES 5 A 140 THR ILE HIS GLY GLU ILE ASP PRO VAL THR GLY MET VAL SEQRES 6 A 140 MET ASN LEU THR ASP LEU LYS GLU TYR MET GLU GLU ALA SEQRES 7 A 140 ILE MET LYS PRO LEU ASP HIS LYS ASN LEU ASP LEU ASP SEQRES 8 A 140 VAL PRO TYR PHE ALA ASP VAL VAL SER THR THR GLU ASN SEQRES 9 A 140 VAL ALA VAL TYR ILE TRP GLU ASN LEU GLN ARG LEU LEU SEQRES 10 A 140 PRO VAL GLY ALA LEU TYR LYS VAL LYS VAL TYR GLU THR SEQRES 11 A 140 ASP ASN ASN ILE VAL VAL TYR LYS GLY GLU SEQRES 1 B 140 VAL GLY LEU ARG ARG ARG ALA ARG LEU SER ARG LEU VAL SEQRES 2 B 140 SER PHE SER ALA SER HIS ARG LEU HIS SER PRO SER LEU SEQRES 3 B 140 SER ALA GLU GLU ASN LEU LYS VAL PHE GLY LYS CYS ASN SEQRES 4 B 140 ASN PRO ASN GLY HIS GLY HIS ASN TYR LYS VAL VAL VAL SEQRES 5 B 140 THR ILE HIS GLY GLU ILE ASP PRO VAL THR GLY MET VAL SEQRES 6 B 140 MET ASN LEU THR ASP LEU LYS GLU TYR MET GLU GLU ALA SEQRES 7 B 140 ILE MET LYS PRO LEU ASP HIS LYS ASN LEU ASP LEU ASP SEQRES 8 B 140 VAL PRO TYR PHE ALA ASP VAL VAL SER THR THR GLU ASN SEQRES 9 B 140 VAL ALA VAL TYR ILE TRP GLU ASN LEU GLN ARG LEU LEU SEQRES 10 B 140 PRO VAL GLY ALA LEU TYR LYS VAL LYS VAL TYR GLU THR SEQRES 11 B 140 ASP ASN ASN ILE VAL VAL TYR LYS GLY GLU HET ZN A 200 1 HET ZN B 200 1 HETNAM ZN ZINC ION FORMUL 3 ZN 2(ZN 2+) FORMUL 5 HOH *80(H2 O) HELIX 1 1 ALA A 32 ASN A 43 1 12 HELIX 2 2 LEU A 72 ALA A 82 1 11 HELIX 3 3 MET A 84 LEU A 87 1 4 HELIX 4 4 LEU A 92 ASP A 95 1 4 HELIX 5 5 PRO A 97 ALA A 100 5 4 HELIX 6 6 THR A 106 LEU A 120 1 15 HELIX 7 7 ALA B 32 ASN B 43 1 12 HELIX 8 8 LEU B 72 ALA B 82 1 11 HELIX 9 9 MET B 84 LEU B 87 1 4 HELIX 10 10 LEU B 92 ASP B 95 1 4 HELIX 11 11 PRO B 97 ALA B 100 5 4 HELIX 12 12 THR B 106 LEU B 120 1 15 SHEET 1 A 4 ARG A 10 HIS A 23 0 SHEET 2 A 4 HIS A 48 GLU A 61 -1 N GLY A 60 O ALA A 11 SHEET 3 A 4 LEU A 126 TYR A 132 -1 N TYR A 132 O LYS A 53 SHEET 4 A 4 ILE A 138 TYR A 141 -1 N TYR A 141 O VAL A 129 SHEET 1 B 4 ARG B 10 HIS B 23 0 SHEET 2 B 4 HIS B 48 GLU B 61 -1 N GLY B 60 O ALA B 11 SHEET 3 B 4 LEU B 126 TYR B 132 -1 N TYR B 132 O LYS B 53 SHEET 4 B 4 ILE B 138 TYR B 141 -1 N TYR B 141 O VAL B 129 LINK NE2 HIS A 23 ZN ZN A 200 1555 1555 2.28 LINK NE2 HIS A 48 ZN ZN A 200 1555 1555 2.25 LINK NE2 HIS A 50 ZN ZN A 200 1555 1555 2.22 LINK NE2 HIS B 23 ZN ZN B 200 1555 1555 2.35 LINK NE2 HIS B 48 ZN ZN B 200 1555 1555 2.25 LINK NE2 HIS B 50 ZN ZN B 200 1555 1555 2.08 SITE 1 AC1 4 HIS A 23 HIS A 48 HIS A 50 GLU A 133 SITE 1 AC2 4 HIS B 23 HIS B 48 HIS B 50 GLU B 133 CRYST1 122.300 122.300 61.600 90.00 90.00 120.00 P 3 2 1 12 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 0.008177 0.004721 0.000000 0.00000 SCALE2 0.000000 0.009442 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016234 0.00000