HEADER PROTEIN BINDING 09-OCT-01 1K51 TITLE A G55A MUTATION INDUCES 3D DOMAIN SWAPPING IN THE B1 DOMAIN OF PROTEIN TITLE 2 L FROM PEPTOSTREPTOCOCCUS MAGNUS COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN L; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: B1 DOMAIN (RESIDUES 111-173); COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: FINEGOLDIA MAGNA; SOURCE 3 ORGANISM_TAXID: 334413; SOURCE 4 STRAIN: ATCC 29328; SOURCE 5 GENE: PROTEIN L, B1 DOMAIN; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET3A KEYWDS PROTEIN L B1 DOMAIN, STRAINED BETA-HAIRPIN TURN, POSITIVE PHI ANGLES, KEYWDS 2 DOMAIN SWAPPING, AMYLOID FORMATION, PROTEIN BINDING EXPDTA X-RAY DIFFRACTION AUTHOR J.W.O'NEILL,D.E.KIM,K.JOHNSEN,D.BAKER,K.Y.J.ZHANG REVDAT 6 16-AUG-23 1K51 1 REMARK REVDAT 5 27-OCT-21 1K51 1 REMARK SEQADV LINK REVDAT 4 13-JUL-11 1K51 1 VERSN REVDAT 3 24-FEB-09 1K51 1 VERSN REVDAT 2 01-APR-03 1K51 1 JRNL REVDAT 1 05-DEC-01 1K51 0 JRNL AUTH J.W.O'NEILL,D.E.KIM,K.JOHNSEN,D.BAKER,K.Y.ZHANG JRNL TITL SINGLE-SITE MUTATIONS INDUCE 3D DOMAIN SWAPPING IN THE B1 JRNL TITL 2 DOMAIN OF PROTEIN L FROM PEPTOSTREPTOCOCCUS MAGNUS. JRNL REF STRUCTURE V. 9 1017 2001 JRNL REFN ISSN 0969-2126 JRNL PMID 11709166 JRNL DOI 10.1016/S0969-2126(01)00667-0 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 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 : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 23.46 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1343900.090 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.5 REMARK 3 NUMBER OF REFLECTIONS : 10255 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) : 0.186 REMARK 3 FREE R VALUE : 0.210 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.800 REMARK 3 FREE R VALUE TEST SET COUNT : 495 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.009 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.80 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.91 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 97.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1572 REMARK 3 BIN R VALUE (WORKING SET) : 0.2120 REMARK 3 BIN FREE R VALUE : 0.2290 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 83 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.025 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 552 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 68 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 17.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 26.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 5.17000 REMARK 3 B22 (A**2) : -0.78000 REMARK 3 B33 (A**2) : -4.39000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.19 REMARK 3 ESD FROM SIGMAA (A) : 0.07 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) : 0.21 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.12 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 26.40 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.570 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) : 1.150 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.760 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.760 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 4.880 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.37 REMARK 3 BSOL : 41.26 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 : CARBOHYDRATE.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1K51 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 19-OCT-01. REMARK 100 THE DEPOSITION ID IS D_1000014568. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 28-NOV-99 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 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 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : MIRRORS REMARK 200 OPTICS : MIRRORS 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 : 10272 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.6 REMARK 200 DATA REDUNDANCY : 5.700 REMARK 200 R MERGE (I) : 0.05600 REMARK 200 R SYM (I) : 0.06100 REMARK 200 FOR THE DATA SET : 31.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.86 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.6 REMARK 200 DATA REDUNDANCY IN SHELL : 5.40 REMARK 200 R MERGE FOR SHELL (I) : 0.13400 REMARK 200 R SYM FOR SHELL (I) : 0.13300 REMARK 200 FOR SHELL : 2.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: EPMR REMARK 200 STARTING MODEL: PDB ENTRY 1HZ5 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 63.37 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.36 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 225MM ZNOAC, 2% PEG8000, PH 6.5, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 277K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 30.04550 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 30.04550 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 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 24.00400 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 37.56250 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 24.00400 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 37.56250 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 30.04550 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 24.00400 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 37.56250 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 30.04550 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 24.00400 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 37.56250 REMARK 290 SMTRY3 8 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 300 REMARK: THE SECOND HALF OF THE 3D DOMAIN SWAPPED DIMER STRUCTURE IS REMARK 300 GENERATED BY: -X,Y,1/2 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,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 5230 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 7770 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -164.0 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 30.04550 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 A2055 LIES ON A SPECIAL POSITION. 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 MET A 1 CG SD CE REMARK 470 GLU A 3 CG CD OE1 OE2 REMARK 470 LYS A 7 CE NZ REMARK 470 LYS A 23 CG CD CE NZ REMARK 470 LYS A 42 CG CD CE 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 LYS A 54 -30.08 -131.08 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 A1001 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 MET A -7 O REMARK 620 2 MET A -7 N 71.4 REMARK 620 3 HIS A -5 NE2 91.4 121.9 REMARK 620 4 HIS A -3 ND1 87.7 105.8 129.1 REMARK 620 5 GLY A 64 OXT 162.0 91.9 92.0 103.6 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A1002 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A -6 NE2 REMARK 620 2 HIS A -1 NE2 117.0 REMARK 620 3 ASP A 50 OD1 106.5 123.7 REMARK 620 4 HOH A2056 O 99.1 103.6 102.7 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A1003 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A -4 NE2 REMARK 620 2 HIS A -2 ND1 129.5 REMARK 620 3 GLU A 2 OE2 104.8 100.7 REMARK 620 4 GLU A 27 OE2 91.8 88.0 148.8 REMARK 620 5 GLU A 27 OE1 110.1 109.3 96.4 52.7 REMARK 620 N 1 2 3 4 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 1001 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 1002 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 1003 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1HZ5 RELATED DB: PDB REMARK 900 MONOMERIC WT PROTEIN L B1 DOMAIN WITH Y47W SUBSTITUTION, ZN- REMARK 900 COORDINATED HIS-TAG' REMARK 900 RELATED ID: 1HZ6 RELATED DB: PDB REMARK 900 MONOMERIC WT PROTEIN L B1 DOMAIN WITH Y47W SUBSTITUTION. REMARK 900 RELATED ID: 1JML RELATED DB: PDB REMARK 900 CONVERSION OF MONOMERIC PROTEIN L TO AN OBLIGATE DIMER BY REMARK 900 COMPUTATIONAL PROTEIN DESIGN. REMARK 900 RELATED ID: 1K50 RELATED DB: PDB REMARK 900 A V49A MUTATION INDUCES 3D DOMAIN SWAPPING IN THE B1 DOMAIN. REMARK 900 RELATED ID: 1K52 RELATED DB: PDB REMARK 900 MONOMERIC PROTEIN L B1 DOMAIN WITH A K54G MUTATION. REMARK 900 RELATED ID: 1K53 RELATED DB: PDB REMARK 900 MONOMERIC PROTEIN L B1 DOMAIN WITH A G15A MUTATION. DBREF 1K51 A 2 64 UNP Q51912 Q51912_PEPMA 111 173 SEQADV 1K51 MET A -7 UNP Q51912 EXPRESSION TAG SEQADV 1K51 HIS A -6 UNP Q51912 EXPRESSION TAG SEQADV 1K51 HIS A -5 UNP Q51912 EXPRESSION TAG SEQADV 1K51 HIS A -4 UNP Q51912 EXPRESSION TAG SEQADV 1K51 HIS A -3 UNP Q51912 EXPRESSION TAG SEQADV 1K51 HIS A -2 UNP Q51912 EXPRESSION TAG SEQADV 1K51 HIS A -1 UNP Q51912 EXPRESSION TAG SEQADV 1K51 ALA A 0 UNP Q51912 EXPRESSION TAG SEQADV 1K51 MET A 1 UNP Q51912 EXPRESSION TAG SEQADV 1K51 TRP A 47 UNP Q51912 TYR 156 ENGINEERED MUTATION SEQADV 1K51 ALA A 55 UNP Q51912 GLY 164 ENGINEERED MUTATION SEQRES 1 A 72 MET HIS HIS HIS HIS HIS HIS ALA MET GLU GLU VAL THR SEQRES 2 A 72 ILE LYS ALA ASN LEU ILE PHE ALA ASN GLY SER THR GLN SEQRES 3 A 72 THR ALA GLU PHE LYS GLY THR PHE GLU LYS ALA THR SER SEQRES 4 A 72 GLU ALA TYR ALA TYR ALA ASP THR LEU LYS LYS ASP ASN SEQRES 5 A 72 GLY GLU TRP THR VAL ASP VAL ALA ASP LYS ALA TYR THR SEQRES 6 A 72 LEU ASN ILE LYS PHE ALA GLY HET ZN A1001 1 HET ZN A1002 1 HET ZN A1003 1 HETNAM ZN ZINC ION FORMUL 2 ZN 3(ZN 2+) FORMUL 5 HOH *68(H2 O) HELIX 1 1 THR A 25 THR A 39 1 15 HELIX 2 2 LEU A 40 GLY A 45 1 6 SHEET 1 A 2 VAL A 4 ILE A 11 0 SHEET 2 A 2 THR A 17 GLY A 24 -1 O GLN A 18 N LEU A 10 LINK O MET A -7 ZN ZN A1001 1555 1555 2.42 LINK N MET A -7 ZN ZN A1001 1555 1555 2.26 LINK NE2 HIS A -6 ZN ZN A1002 1555 1555 2.11 LINK NE2 HIS A -5 ZN ZN A1001 3555 1555 2.09 LINK NE2 HIS A -4 ZN ZN A1003 1555 1555 2.12 LINK ND1 HIS A -3 ZN ZN A1001 3555 1555 2.08 LINK ND1 HIS A -2 ZN ZN A1003 1555 1555 2.12 LINK NE2 HIS A -1 ZN ZN A1002 3555 1555 2.08 LINK OE2 GLU A 2 ZN ZN A1003 1555 1555 2.00 LINK OE2 GLU A 27 ZN ZN A1003 1555 1555 2.66 LINK OE1 GLU A 27 ZN ZN A1003 1555 1555 2.18 LINK OD1 ASP A 50 ZN ZN A1002 1555 1555 2.03 LINK OXT GLY A 64 ZN ZN A1001 6554 1555 2.16 LINK ZN ZN A1002 O HOH A2056 1555 1555 2.15 SITE 1 AC1 4 MET A -7 HIS A -3 HIS A -5 GLY A 64 SITE 1 AC2 5 HIS A -6 HIS A -1 ASP A 50 VAL A 51 SITE 2 AC2 5 HOH A2056 SITE 1 AC3 4 HIS A -4 HIS A -2 GLU A 2 GLU A 27 CRYST1 48.008 75.125 60.091 90.00 90.00 90.00 C 2 2 21 8 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 0.020830 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013311 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016641 0.00000