HEADER COMPLEX(CALCIUM-BINDING PROTEIN/PEPTIDE)24-SEP-97 1VRK TITLE THE 1.9 ANGSTROM STRUCTURE OF E84K-CALMODULIN RS20 PEPTIDE COMPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: CALMODULIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: RS20; COMPND 8 CHAIN: B; COMPND 9 EC: 2.7.1.117; COMPND 10 ENGINEERED: YES; COMPND 11 OTHER_DETAILS: TRP 4 IS NE-FORMYLATED SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 3 ORGANISM_TAXID: 32630; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: UT481; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PVUCH-1; SOURCE 8 OTHER_DETAILS: CONSENSUS SEQUENCE FROM A NUMBER OF SOURCES; SOURCE 9 MOL_ID: 2 KEYWDS CALMODULIN, CALCIUM BINDING, HELIX-LOOP-HELIX, SIGNALLING, KEYWDS 2 COMPLEX(CALCIUM-BINDING PROTEIN-PEPTIDE), COMPLEX(CALCIUM-BINDING KEYWDS 3 PROTEIN-PEPTIDE) COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR S.WEIGAND,W.F.ANDERSON REVDAT 4 30-OCT-24 1VRK 1 REMARK REVDAT 3 09-AUG-23 1VRK 1 REMARK LINK REVDAT 2 24-FEB-09 1VRK 1 VERSN REVDAT 1 27-APR-99 1VRK 0 JRNL AUTH S.MIRZOEVA,S.WEIGAND,T.J.LUKAS,L.SHUVALOVA,W.F.ANDERSON, JRNL AUTH 2 D.M.WATTERSON JRNL TITL ANALYSIS OF THE FUNCTIONAL COUPLING BETWEEN CALMODULIN'S JRNL TITL 2 CALCIUM BINDING AND PEPTIDE RECOGNITION PROPERTIES. JRNL REF BIOCHEMISTRY V. 38 3936 1999 JRNL REFN ISSN 0006-2960 JRNL PMID 10194305 JRNL DOI 10.1021/BI9821263 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.E.MEADOR,A.R.MEANS,F.A.QUIOCHO REMARK 1 TITL TARGET ENZYME RECOGNITION BY CALMODULIN: 2.4 A STRUCTURE OF REMARK 1 TITL 2 A CALMODULIN-PEPTIDE COMPLEX REMARK 1 REF SCIENCE V. 257 1251 1992 REMARK 1 REFN ISSN 0036-8075 REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 10000000.000 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0010 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 78.0 REMARK 3 NUMBER OF REFLECTIONS : 10032 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) : 0.171 REMARK 3 FREE R VALUE : 0.242 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.300 REMARK 3 FREE R VALUE TEST SET COUNT : 1029 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.008 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) : 1.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.02 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 41.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 805 REMARK 3 BIN R VALUE (WORKING SET) : 0.2560 REMARK 3 BIN FREE R VALUE : 0.3230 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 9.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 86 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.035 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1326 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 8 REMARK 3 SOLVENT ATOMS : 141 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 7.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 30.70 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) : 0.19 REMARK 3 ESD FROM SIGMAA (A) : 0.22 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) : 0.25 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.24 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.000 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.130 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) : 3.980 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 5.560 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 6.900 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 9.640 ; 2.500 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 : PARAMETER.ELEMENTS REMARK 3 PARAMETER FILE 3 : WAT_ACT_FOR.PAR REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : CALCIUM.TOP REMARK 3 TOPOLOGY FILE 3 : WAT_ACT_FOR.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: BULK SOLVENT MODEL USED REMARK 4 REMARK 4 1VRK 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_1000177105. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : APR-93 REMARK 200 TEMPERATURE (KELVIN) : 293 REMARK 200 PH : 4.6 REMARK 200 NUMBER OF CRYSTALS USED : 2 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 RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : COLLIMATOR REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : XUONG-HAMLIN MULTIWIRE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : SDMS REMARK 200 DATA SCALING SOFTWARE : SDMS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 11190 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 18.200 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 88.0 REMARK 200 DATA REDUNDANCY : 3.200 REMARK 200 R MERGE (I) : 0.06490 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 15.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.05 REMARK 200 COMPLETENESS FOR SHELL (%) : 65.0 REMARK 200 DATA REDUNDANCY IN SHELL : 1.90 REMARK 200 R MERGE FOR SHELL (I) : 0.23700 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR 3.851 REMARK 200 STARTING MODEL: PDB ENTRY 1CDL: SECOND COMPLEX (SEGID B AND F) OF REMARK 200 THE ASYMMETRIC UNIT REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.10 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 4.6 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 20.28000 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: 3730 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8780 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -75.0 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 400 REMARK 400 COMPOUND REMARK 400 THE ENHANCEMENT OF CALMODULIN'S CALCIUM BINDING BY REMARK 400 SMOOTH MUSCLE/NONMUSCLE MYOSIN LIGHT CHAIN KINASE REMARK 400 OR THE RS20 PEPTIDE ANALOG (CHAIN B) IS DIMINISHED REMARK 400 BY THE MUTATION OF GLUTAMATE-84 TO LYSINE (E84K). REMARK 400 REMARK 400 THE PRESENCE OR ABSENCE OF THE FORMYL BLOCKING GROUP ON REMARK 400 TRYPTOPHAN-4 OF THE PEPTIDE HAS NO EFFECT ON THE CALCIUM REMARK 400 BINDING PROPERTIES OF EITHER THE WILD-TYPE OR E84K MUTANT REMARK 400 CALMODULIN. (UNPUBLISHED) 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 GLN A 3 45.26 -140.97 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 CA A 151 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 20 OD1 REMARK 620 2 ASP A 22 OD1 74.9 REMARK 620 3 ASP A 24 OD1 82.3 80.5 REMARK 620 4 THR A 26 O 90.3 155.7 78.4 REMARK 620 5 GLU A 31 OE2 91.5 77.4 157.9 123.1 REMARK 620 6 GLU A 31 OE1 113.6 128.0 149.2 75.4 52.2 REMARK 620 7 HOH A 201 O 159.1 87.7 83.6 101.8 95.9 86.1 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 152 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 56 OD1 REMARK 620 2 ASP A 58 OD1 79.5 REMARK 620 3 ASN A 60 OD1 84.3 78.4 REMARK 620 4 THR A 62 O 83.6 150.4 76.0 REMARK 620 5 GLU A 67 OE1 104.7 129.6 151.4 78.1 REMARK 620 6 GLU A 67 OE2 90.5 80.0 158.3 124.4 50.1 REMARK 620 7 HOH A 202 O 168.1 95.0 84.3 96.8 87.0 99.0 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 153 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 93 OD1 REMARK 620 2 ASP A 95 OD1 79.7 REMARK 620 3 ASN A 97 OD1 88.9 76.7 REMARK 620 4 PHE A 99 O 70.4 145.4 85.4 REMARK 620 5 GLU A 104 OE1 98.4 126.9 156.0 75.8 REMARK 620 6 GLU A 104 OE2 90.9 77.8 154.1 118.7 49.1 REMARK 620 7 HOH A 203 O 166.9 100.6 78.6 104.7 91.8 101.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 154 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 129 OD1 REMARK 620 2 ASP A 131 OD1 82.2 REMARK 620 3 ASP A 133 OD1 79.0 73.8 REMARK 620 4 GLN A 135 O 74.8 144.7 75.7 REMARK 620 5 GLU A 140 OE2 94.7 87.6 161.0 120.2 REMARK 620 6 GLU A 140 OE1 122.2 128.1 148.4 87.1 49.1 REMARK 620 7 HOH A 204 O 156.4 90.9 77.5 99.6 107.6 79.6 REMARK 620 N 1 2 3 4 5 6 REMARK 650 REMARK 650 HELIX REMARK 650 THE STRUCTURAL CONSEQUENCE OF THE E84K MUTATION RELATIVE REMARK 650 TO THE WILD TYPE STRUCTURE (REFERENCE 1 ABOVE) IS AN REMARK 650 ALTERATION OF THE RESIDUE 84 CONFORMATION AND A FIVE REMARK 650 DEGREE MOVEMENT OF HELIX E (HELIX 5) AWAY FROM THE PEPTIDE REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CA1 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CALCIUM BINDING SITE ONE. REMARK 800 REMARK 800 SITE_IDENTIFIER: CA2 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CALCIUM BINDING SITE TWO. REMARK 800 REMARK 800 SITE_IDENTIFIER: CA3 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CALCIUM BINDING SITE THREE. REMARK 800 REMARK 800 SITE_IDENTIFIER: CA4 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CALCIUM BINDING SITE FOUR. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 151 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 152 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 153 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 154 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 601 DBREF 1VRK A 1 148 GB 3561059 AAC61858 2 149 DBREF 1VRK B 1 21 PDB 1VRK 1VRK 1 21 SEQRES 1 A 148 ALA ASP GLN LEU THR ASP GLU GLN ILE ALA GLU PHE LYS SEQRES 2 A 148 GLU ALA PHE SER LEU PHE ASP LYS ASP GLY ASP GLY THR SEQRES 3 A 148 ILE THR THR LYS GLU LEU GLY THR VAL MET ARG SER LEU SEQRES 4 A 148 GLY GLN ASN PRO THR GLU ALA GLU LEU GLN ASP MET ILE SEQRES 5 A 148 ASN GLU VAL ASP ALA ASP GLY ASN GLY THR ILE ASP PHE SEQRES 6 A 148 PRO GLU PHE LEU ASN LEU MET ALA ARG LYS MET LYS ASP SEQRES 7 A 148 THR ASP SER GLU GLU LYS LEU LYS GLU ALA PHE ARG VAL SEQRES 8 A 148 PHE ASP LYS ASP GLY ASN GLY PHE ILE SER ALA ALA GLU SEQRES 9 A 148 LEU ARG HIS VAL MET THR ASN LEU GLY GLU LYS LEU THR SEQRES 10 A 148 ASP GLU GLU VAL ASP GLU MET ILE ARG GLU ALA ASP VAL SEQRES 11 A 148 ASP GLY ASP GLY GLN VAL ASN TYR GLU GLU PHE VAL GLN SEQRES 12 A 148 VAL MET MET ALA LYS SEQRES 1 B 21 ARG ARG LYS TRF GLN LYS THR GLY HIS ALA VAL ARG ALA SEQRES 2 B 21 ILE GLY ARG LEU SER SER SER NH2 MODRES 1VRK TRF B 4 TRP N1-FORMYL-TRYPTOPHAN HET TRF B 4 16 HET NH2 B 21 1 HET CA A 151 1 HET CA A 152 1 HET CA A 153 1 HET CA A 154 1 HET ACT B 601 4 HETNAM TRF N1-FORMYL-TRYPTOPHAN HETNAM NH2 AMINO GROUP HETNAM CA CALCIUM ION HETNAM ACT ACETATE ION FORMUL 2 TRF C12 H12 N2 O3 FORMUL 2 NH2 H2 N FORMUL 3 CA 4(CA 2+) FORMUL 7 ACT C2 H3 O2 1- FORMUL 8 HOH *141(H2 O) HELIX 1 1 ASP A 6 PHE A 19 1 14 HELIX 2 2 THR A 29 SER A 38 1 10 HELIX 3 3 GLU A 45 VAL A 55 1 11 HELIX 4 4 PHE A 65 ALA A 73 1 9 HELIX 5 5 ASP A 78 PHE A 92 1 15 HELIX 6 6 ALA A 102 ASN A 111 1 10 HELIX 7 7 ASP A 118 ALA A 128 1 11 HELIX 8 8 TYR A 138 MET A 145 1 8 HELIX 9 9 LYS B 3 SER B 18 5 16 SHEET 1 A 2 THR A 26 ILE A 27 0 SHEET 2 A 2 ILE A 63 ASP A 64 -1 O ILE A 63 N ILE A 27 LINK C LYS B 3 N TRF B 4 1555 1555 1.33 LINK C TRF B 4 N GLN B 5 1555 1555 1.33 LINK C SER B 20 N NH2 B 21 1555 1555 1.25 LINK OD1 ASP A 20 CA CA A 151 1555 1555 2.41 LINK OD1 ASP A 22 CA CA A 151 1555 1555 2.48 LINK OD1 ASP A 24 CA CA A 151 1555 1555 2.57 LINK O THR A 26 CA CA A 151 1555 1555 2.33 LINK OE2 GLU A 31 CA CA A 151 1555 1555 2.50 LINK OE1 GLU A 31 CA CA A 151 1555 1555 2.50 LINK OD1 ASP A 56 CA CA A 152 1555 1555 2.40 LINK OD1 ASP A 58 CA CA A 152 1555 1555 2.41 LINK OD1 ASN A 60 CA CA A 152 1555 1555 2.45 LINK O THR A 62 CA CA A 152 1555 1555 2.42 LINK OE1 GLU A 67 CA CA A 152 1555 1555 2.58 LINK OE2 GLU A 67 CA CA A 152 1555 1555 2.59 LINK OD1 ASP A 93 CA CA A 153 1555 1555 2.67 LINK OD1 ASP A 95 CA CA A 153 1555 1555 2.49 LINK OD1 ASN A 97 CA CA A 153 1555 1555 2.44 LINK O PHE A 99 CA CA A 153 1555 1555 2.36 LINK OE1 GLU A 104 CA CA A 153 1555 1555 2.59 LINK OE2 GLU A 104 CA CA A 153 1555 1555 2.69 LINK OD1 ASP A 129 CA CA A 154 1555 1555 2.52 LINK OD1 ASP A 131 CA CA A 154 1555 1555 2.60 LINK OD1 ASP A 133 CA CA A 154 1555 1555 2.56 LINK O GLN A 135 CA CA A 154 1555 1555 2.48 LINK OE2 GLU A 140 CA CA A 154 1555 1555 2.69 LINK OE1 GLU A 140 CA CA A 154 1555 1555 2.60 LINK CA CA A 151 O HOH A 201 1555 1555 2.34 LINK CA CA A 152 O HOH A 202 1555 1555 2.45 LINK CA CA A 153 O HOH A 203 1555 1555 2.67 LINK CA CA A 154 O HOH A 204 1555 1555 2.58 SITE 1 CA1 14 ASP A 20 LYS A 21 ASP A 22 GLY A 23 SITE 2 CA1 14 ASP A 24 GLY A 25 THR A 26 ILE A 27 SITE 3 CA1 14 THR A 28 THR A 29 LYS A 30 GLU A 31 SITE 4 CA1 14 CA A 151 HOH A 201 SITE 1 CA2 14 ASP A 56 ALA A 57 ASP A 58 GLY A 59 SITE 2 CA2 14 ASN A 60 GLY A 61 THR A 62 ILE A 63 SITE 3 CA2 14 ASP A 64 PHE A 65 PRO A 66 GLU A 67 SITE 4 CA2 14 CA A 152 HOH A 202 SITE 1 CA3 14 ASP A 93 LYS A 94 ASP A 95 GLY A 96 SITE 2 CA3 14 ASN A 97 GLY A 98 PHE A 99 ILE A 100 SITE 3 CA3 14 SER A 101 ALA A 102 ALA A 103 GLU A 104 SITE 4 CA3 14 CA A 153 HOH A 203 SITE 1 CA4 14 ASP A 129 VAL A 130 ASP A 131 GLY A 132 SITE 2 CA4 14 ASP A 133 GLY A 134 GLN A 135 VAL A 136 SITE 3 CA4 14 ASN A 137 TYR A 138 GLU A 139 GLU A 140 SITE 4 CA4 14 CA A 154 HOH A 204 SITE 1 AC1 6 ASP A 20 ASP A 22 ASP A 24 THR A 26 SITE 2 AC1 6 GLU A 31 HOH A 201 SITE 1 AC2 6 ASP A 56 ASP A 58 ASN A 60 THR A 62 SITE 2 AC2 6 GLU A 67 HOH A 202 SITE 1 AC3 6 ASP A 93 ASP A 95 ASN A 97 PHE A 99 SITE 2 AC3 6 GLU A 104 HOH A 203 SITE 1 AC4 6 ASP A 129 ASP A 131 ASP A 133 GLN A 135 SITE 2 AC4 6 GLU A 140 HOH A 204 SITE 1 AC5 6 LYS A 84 LEU A 85 ARG B 12 ARG B 16 SITE 2 AC5 6 HOH B 417 HOH B 423 CRYST1 61.209 40.560 32.774 90.00 91.70 90.00 P 1 21 1 2 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 0.016337 0.000000 0.000485 0.00000 SCALE2 0.000000 0.024655 0.000000 0.00000 SCALE3 0.000000 0.000000 0.030525 0.00000