HEADER TRANSCRIPTION 24-APR-01 1IJ1 TITLE GCN4-PVLT COILED-COIL TRIMER WITH THREONINE AT THE D(12) POSITION COMPND MOL_ID: 1; COMPND 2 MOLECULE: GENERAL CONTROL PROTEIN GCN4; COMPND 3 CHAIN: A, B, C; COMPND 4 FRAGMENT: COILED COIL REGION; COMPND 5 SYNONYM: GCN4-PVLS; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS PEPTIDE WAS CHEMICALLY SYNTHESIZED. IT IS SOURCE 4 NATURALLY FOUND IN SACCHAROMYCES CEREVISIAE (YEAST). THE PEPTIDE IS SOURCE 5 A VARIANT OF THE YEAST GCN4 COILED COIL REGION MADE BY SOLID PHASE SOURCE 6 SYNTHESIS. KEYWDS GCN4, COILED COIL, TRANSCRIPTION EXPDTA X-RAY DIFFRACTION AUTHOR D.L.AKEY,V.N.MALASHKEVICH,P.S.KIM REVDAT 4 27-OCT-21 1IJ1 1 REMARK SEQADV LINK REVDAT 3 04-OCT-17 1IJ1 1 REMARK REVDAT 2 24-FEB-09 1IJ1 1 VERSN REVDAT 1 08-AUG-01 1IJ1 0 JRNL AUTH D.L.AKEY,V.N.MALASHKEVICH,P.S.KIM JRNL TITL BURIED POLAR RESIDUES IN COILED-COIL INTERFACES. JRNL REF BIOCHEMISTRY V. 40 6352 2001 JRNL REFN ISSN 0006-2960 JRNL PMID 11371197 JRNL DOI 10.1021/BI002829W REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.K.O'SHEA,J.D.KLEMM,P.S.KIM,T.ALBER REMARK 1 TITL X-RAY STRUCTURE OF THE GCN4 LEUCINE ZIPPER, A TWO-STRANDED, REMARK 1 TITL 2 PARALLEL COILED COIL. REMARK 1 REF SCIENCE V. 254 539 1991 REMARK 1 REFN ISSN 0036-8075 REMARK 1 REFERENCE 2 REMARK 1 AUTH P.B.HARBURY,T.ZHANG,P.S.KIM,T.ALBER REMARK 1 TITL A SWITCH BETWEEN TWO-, THREE-, AND FOUR-STRANDED COILED REMARK 1 TITL 2 COILS IN GCN4 LEUCINE ZIPPER MUTANTS REMARK 1 REF SCIENCE V. 262 1401 1993 REMARK 1 REFN ISSN 0036-8075 REMARK 1 REFERENCE 3 REMARK 1 AUTH L.GONZALEZ JR.,D.N.WOOLFSON,T.ALBER REMARK 1 TITL BURIED POLAR RESIDUES AND STRUCTURAL SPECIFICITY IN THE GCN4 REMARK 1 TITL 2 LEUCINE ZIPPER REMARK 1 REF NAT.STRUCT.BIOL. V. 3 1011 1996 REMARK 1 REFN ISSN 1072-8368 REMARK 2 REMARK 2 RESOLUTION. 1.86 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 0.5 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.86 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 472116.940 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 95.3 REMARK 3 NUMBER OF REFLECTIONS : 7316 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) : 0.227 REMARK 3 FREE R VALUE : 0.278 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.600 REMARK 3 FREE R VALUE TEST SET COUNT : 703 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.010 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 9 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.86 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.93 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 90.40 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 709 REMARK 3 BIN R VALUE (WORKING SET) : 0.3100 REMARK 3 BIN FREE R VALUE : 0.3780 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 8.90 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 69 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.046 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 780 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 127 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 29.70 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.60 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -3.59000 REMARK 3 B22 (A**2) : 7.95000 REMARK 3 B33 (A**2) : -4.36000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -3.98000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.25 REMARK 3 ESD FROM SIGMAA (A) : 0.21 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.33 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.23 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 13.70 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.830 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.29 REMARK 3 BSOL : 71.48 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1IJ1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 26-APR-01. REMARK 100 THE DEPOSITION ID IS D_1000013317. 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 : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RU300 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : MIRRORS REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 8284 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 200 DATA REDUNDANCY : 4.600 REMARK 200 R MERGE (I) : 0.04600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 12.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.86 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.94 REMARK 200 COMPLETENESS FOR SHELL (%) : 87.8 REMARK 200 DATA REDUNDANCY IN SHELL : 4.10 REMARK 200 R MERGE FOR SHELL (I) : 0.30600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.500 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: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 35.34 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.90 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M NA CACODYLATE, 20% PEG 8000, 0.2 REMARK 280 M ZN ACETATE, PH 6.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE REMARK 280 298K 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 21.09600 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 4700 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 6220 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -139.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C 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 GLU A 32 REMARK 465 ARG A 33 REMARK 465 GLU B 32 REMARK 465 ARG B 33 REMARK 465 GLU C 32 REMARK 465 ARG C 33 REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 GLN A 4 OE1 NE2 REMARK 480 LYS B 3 CG CD CE NZ REMARK 480 GLN B 4 OE1 NE2 REMARK 480 LYS B 8 CE NZ REMARK 480 LYS B 15 CE NZ REMARK 480 LYS B 28 CG CD CE NZ REMARK 480 LYS C 3 NZ 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 VAL A 30 -73.11 -96.78 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 201 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 18 NE2 REMARK 620 2 GLU A 22 OE2 108.0 REMARK 620 3 HOH A 219 O 101.2 127.2 REMARK 620 4 HOH A 220 O 107.4 93.3 118.7 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN B 202 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 18 NE2 REMARK 620 2 GLU B 22 OE2 95.4 REMARK 620 3 HOH B 224 O 116.8 102.6 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN C 203 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS C 18 NE2 REMARK 620 2 GLU C 22 OE1 93.1 REMARK 620 3 HOH C 222 O 83.0 77.9 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 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 202 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN C 203 DBREF 1IJ1 A 1 33 UNP P03069 GCN4_YEAST 249 281 DBREF 1IJ1 B 1 33 UNP P03069 GCN4_YEAST 249 281 DBREF 1IJ1 C 1 33 UNP P03069 GCN4_YEAST 249 281 SEQADV 1IJ1 THR A 12 UNP P03069 LEU 260 ENGINEERED MUTATION SEQADV 1IJ1 VAL A 16 UNP P03069 ASN 264 ENGINEERED MUTATION SEQADV 1IJ1 THR B 12 UNP P03069 LEU 260 ENGINEERED MUTATION SEQADV 1IJ1 VAL B 16 UNP P03069 ASN 264 ENGINEERED MUTATION SEQADV 1IJ1 THR C 12 UNP P03069 LEU 260 ENGINEERED MUTATION SEQADV 1IJ1 VAL C 16 UNP P03069 ASN 264 ENGINEERED MUTATION SEQRES 1 A 34 ACE ARG MET LYS GLN LEU GLU ASP LYS VAL GLU GLU THR SEQRES 2 A 34 LEU SER LYS VAL TYR HIS LEU GLU ASN GLU VAL ALA ARG SEQRES 3 A 34 LEU LYS LYS LEU VAL GLY GLU ARG SEQRES 1 B 34 ACE ARG MET LYS GLN LEU GLU ASP LYS VAL GLU GLU THR SEQRES 2 B 34 LEU SER LYS VAL TYR HIS LEU GLU ASN GLU VAL ALA ARG SEQRES 3 B 34 LEU LYS LYS LEU VAL GLY GLU ARG SEQRES 1 C 34 ACE ARG MET LYS GLN LEU GLU ASP LYS VAL GLU GLU THR SEQRES 2 C 34 LEU SER LYS VAL TYR HIS LEU GLU ASN GLU VAL ALA ARG SEQRES 3 C 34 LEU LYS LYS LEU VAL GLY GLU ARG HET ACE A 0 3 HET ACE B 0 3 HET ACE C 0 3 HET ZN A 201 1 HET ZN B 202 1 HET ZN C 203 1 HETNAM ACE ACETYL GROUP HETNAM ZN ZINC ION FORMUL 1 ACE 3(C2 H4 O) FORMUL 4 ZN 3(ZN 2+) FORMUL 7 HOH *127(H2 O) HELIX 1 1 ARG A 1 GLY A 31 1 31 HELIX 2 2 ARG B 1 GLY B 31 1 31 HELIX 3 3 ARG C 1 GLY C 31 1 31 LINK C ACE A 0 N ARG A 1 1555 1555 1.33 LINK C ACE B 0 N ARG B 1 1555 1555 1.34 LINK C ACE C 0 N ARG C 1 1555 1555 1.33 LINK NE2 HIS A 18 ZN ZN A 201 1555 1555 2.24 LINK OE2 GLU A 22 ZN ZN A 201 1555 1555 2.77 LINK ZN ZN A 201 O HOH A 219 1555 1555 2.24 LINK ZN ZN A 201 O HOH A 220 1555 1555 2.53 LINK NE2 HIS B 18 ZN ZN B 202 1555 1555 2.37 LINK OE2 GLU B 22 ZN ZN B 202 1555 1555 2.55 LINK ZN ZN B 202 O HOH B 224 1555 1555 2.53 LINK NE2 HIS C 18 ZN ZN C 203 1555 1555 2.55 LINK OE1 GLU C 22 ZN ZN C 203 1555 1555 2.51 LINK ZN ZN C 203 O HOH C 222 1555 1555 2.72 SITE 1 AC1 4 HIS A 18 GLU A 22 HOH A 219 HOH A 220 SITE 1 AC2 5 HIS B 18 GLU B 22 HOH B 205 HOH B 211 SITE 2 AC2 5 HOH B 224 SITE 1 AC3 3 HIS C 18 GLU C 22 HOH C 222 CRYST1 25.683 42.192 42.682 90.00 98.87 90.00 P 1 21 1 6 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 0.038936 0.000000 0.006078 0.00000 SCALE2 0.000000 0.023701 0.000000 0.00000 SCALE3 0.000000 0.000000 0.023713 0.00000 HETATM 1 C ACE A 0 -19.311 -1.227 -2.775 1.00 47.19 C HETATM 2 O ACE A 0 -19.020 -1.164 -1.576 1.00 46.89 O HETATM 3 CH3 ACE A 0 -20.570 -0.579 -3.279 1.00 46.51 C