PDB Short entry for 1BL8 HEADER MEMBRANE PROTEIN 23-JUL-98 1BL8 TITLE POTASSIUM CHANNEL (KCSA) FROM STREPTOMYCES LIVIDANS COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (POTASSIUM CHANNEL PROTEIN); COMPND 3 CHAIN: A, B, C, D; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOMYCES LIVIDANS; SOURCE 3 ORGANISM_TAXID: 1916; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: XL-1 BLUE; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PQE60; SOURCE 8 EXPRESSION_SYSTEM_GENE: KCSA KEYWDS POTASSIUM CHANNEL, INTEGRAL MEMBRANE PROTEIN, MEMBRANE PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR D.A.DOYLE,J.M.CABRAL,R.A.PFUETZNER,A.KUO,J.M.GULBIS,S.L.COHEN, AUTHOR 2 B.T.CHAIT,R.MACKINNON REVDAT 7 07-FEB-24 1BL8 1 REMARK REVDAT 6 03-NOV-21 1BL8 1 REMARK SEQADV LINK REVDAT 5 04-OCT-17 1BL8 1 REMARK REVDAT 4 13-JUL-11 1BL8 1 VERSN REVDAT 3 24-FEB-09 1BL8 1 VERSN REVDAT 2 12-JAN-00 1BL8 4 HEADER COMPND REMARK JRNL REVDAT 2 2 4 ATOM SOURCE SEQRES REVDAT 1 29-JUL-98 1BL8 0 JRNL AUTH D.A.DOYLE,J.MORAIS CABRAL,R.A.PFUETZNER,A.KUO,J.M.GULBIS, JRNL AUTH 2 S.L.COHEN,B.T.CHAIT,R.MACKINNON JRNL TITL THE STRUCTURE OF THE POTASSIUM CHANNEL: MOLECULAR BASIS OF JRNL TITL 2 K+ CONDUCTION AND SELECTIVITY. JRNL REF SCIENCE V. 280 69 1998 JRNL REFN ISSN 0036-8075 JRNL PMID 9525859 JRNL DOI 10.1126/SCIENCE.280.5360.69 REMARK 2 REMARK 2 RESOLUTION. 3.20 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) : 3.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 93.3 REMARK 3 NUMBER OF REFLECTIONS : 12054 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : SHELL REMARK 3 R VALUE (WORKING SET) : 0.280 REMARK 3 FREE R VALUE : 0.290 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.400 REMARK 3 FREE R VALUE TEST SET COUNT : 1252 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 : 2820 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 1 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 90.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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) : 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) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.100 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 23.73 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.530 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : GROUP 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 : RESTRAINTS 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 PARAMETER FILE 2 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1BL8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB. REMARK 100 THE DEPOSITION ID IS D_1000008416. 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 : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 6 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : CHESS REMARK 200 BEAMLINE : A1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.908 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : PRINCETON 2K REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 12603 REMARK 200 RESOLUTION RANGE HIGH (A) : 3.200 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.3 REMARK 200 DATA REDUNDANCY : 6.100 REMARK 200 R MERGE (I) : 0.08600 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) : 3.20 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.30 REMARK 200 COMPLETENESS FOR SHELL (%) : 66.6 REMARK 200 DATA REDUNDANCY IN SHELL : 2.30 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR REMARK 200 SOFTWARE USED: CCP4, SHELXL-97 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 75.34 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.99 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: ONE-TO-MIXTURE OF PROTEIN SOLUTION AND REMARK 280 RESERVOIR (200 MM CACL2, 100 MM HEPES PH 7.5, 48% PEG 400). REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z REMARK 290 4555 -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 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 64.39000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 34.46500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 64.39000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 34.46500 REMARK 290 SMTRY3 4 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 7230 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 17310 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -75.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D 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 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 ARG A 27 CG CD NE CZ NH1 NH2 REMARK 470 ILE A 60 CD1 REMARK 470 ARG A 64 CG CD NE CZ NH1 NH2 REMARK 470 GLU A 71 CG CD OE1 OE2 REMARK 470 ARG A 117 CZ NH1 NH2 REMARK 470 ARG B 27 CG CD NE CZ NH1 NH2 REMARK 470 ILE B 60 CD1 REMARK 470 ARG B 64 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 71 CG CD OE1 OE2 REMARK 470 ARG B 117 CZ NH1 NH2 REMARK 470 ARG C 27 CG CD NE CZ NH1 NH2 REMARK 470 ILE C 60 CD1 REMARK 470 ARG C 64 CG CD NE CZ NH1 NH2 REMARK 470 GLU C 71 CG CD OE1 OE2 REMARK 470 ARG C 117 CZ NH1 NH2 REMARK 470 ARG D 27 CG CD NE CZ NH1 NH2 REMARK 470 ILE D 60 CD1 REMARK 470 ARG D 64 CG CD NE CZ NH1 NH2 REMARK 470 GLU D 71 CG CD OE1 OE2 REMARK 470 ARG D 117 CZ NH1 NH2 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 LEU A 24 -71.94 -166.69 REMARK 500 ALA A 29 -67.66 -91.37 REMARK 500 VAL A 34 -5.50 -59.43 REMARK 500 LEU A 40 -79.32 -51.31 REMARK 500 TYR A 45 33.65 -78.78 REMARK 500 LEU A 46 -35.99 -139.23 REMARK 500 LEU A 49 8.38 -59.89 REMARK 500 ARG A 52 -40.86 -29.31 REMARK 500 ALA A 54 168.60 178.78 REMARK 500 PRO A 55 9.51 -56.95 REMARK 500 ALA A 57 -171.69 -58.34 REMARK 500 GLN A 58 3.64 -57.32 REMARK 500 LEU A 59 40.33 -70.63 REMARK 500 LEU A 66 -70.28 -49.04 REMARK 500 THR A 75 74.28 53.34 REMARK 500 ARG A 117 51.30 -144.35 REMARK 500 LEU B 24 -71.99 -166.60 REMARK 500 ALA B 29 -67.63 -91.16 REMARK 500 VAL B 34 -5.48 -59.43 REMARK 500 LEU B 40 -79.15 -51.48 REMARK 500 TYR B 45 33.67 -78.80 REMARK 500 LEU B 46 -36.21 -139.12 REMARK 500 LEU B 49 8.44 -60.33 REMARK 500 ARG B 52 -40.95 -29.29 REMARK 500 ALA B 54 168.72 178.96 REMARK 500 PRO B 55 9.39 -57.09 REMARK 500 ALA B 57 -171.88 -58.04 REMARK 500 GLN B 58 3.73 -57.26 REMARK 500 LEU B 59 40.50 -70.72 REMARK 500 LEU B 66 -70.09 -49.23 REMARK 500 THR B 75 74.38 53.17 REMARK 500 ARG B 117 51.36 -144.54 REMARK 500 LEU C 24 -72.08 -166.70 REMARK 500 ALA C 29 -67.64 -91.13 REMARK 500 VAL C 34 -5.31 -59.52 REMARK 500 LEU C 40 -79.01 -51.22 REMARK 500 TYR C 45 33.68 -78.88 REMARK 500 LEU C 46 -35.93 -139.28 REMARK 500 LEU C 49 8.35 -59.86 REMARK 500 ARG C 52 -40.88 -29.19 REMARK 500 ALA C 54 168.57 178.79 REMARK 500 PRO C 55 9.25 -56.84 REMARK 500 ALA C 57 -171.63 -58.31 REMARK 500 GLN C 58 3.52 -57.37 REMARK 500 LEU C 59 40.37 -70.49 REMARK 500 THR C 75 74.42 53.97 REMARK 500 ARG C 117 51.47 -144.56 REMARK 500 LEU D 24 -71.92 -166.62 REMARK 500 ALA D 29 -67.51 -91.21 REMARK 500 VAL D 34 -5.28 -59.65 REMARK 500 REMARK 500 THIS ENTRY HAS 63 RAMACHANDRAN OUTLIERS. 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 K A 402 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 75 O REMARK 620 2 VAL A 76 O 84.8 REMARK 620 3 K A 403 K 54.6 135.7 REMARK 620 4 THR B 75 O 69.9 101.5 52.1 REMARK 620 5 VAL B 76 O 130.6 58.2 135.1 85.7 REMARK 620 6 THR C 75 O 108.9 159.4 54.4 70.5 101.7 REMARK 620 7 VAL C 76 O 158.8 86.8 137.4 131.1 58.0 84.9 REMARK 620 8 THR D 75 O 70.2 130.9 55.9 108.0 158.9 69.4 101.4 REMARK 620 9 VAL D 76 O 101.5 58.4 138.4 159.4 86.5 129.9 57.7 85.4 REMARK 620 N 1 2 3 4 5 6 7 8 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 403 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 75 O REMARK 620 2 THR A 75 OG1 41.6 REMARK 620 3 THR B 75 O 80.6 122.1 REMARK 620 4 THR B 75 OG1 53.6 89.5 43.5 REMARK 620 5 THR C 75 O 128.0 127.8 81.1 124.6 REMARK 620 6 THR C 75 OG1 133.5 168.2 54.3 92.4 43.0 REMARK 620 7 THR D 75 O 78.1 51.7 129.1 130.9 76.9 119.9 REMARK 620 8 THR D 75 OG1 119.0 87.1 132.1 169.4 51.9 89.0 41.0 REMARK 620 N 1 2 3 4 5 6 7 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 401 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLY A 77 O REMARK 620 2 TYR A 78 O 66.7 REMARK 620 3 GLY B 77 O 59.2 86.0 REMARK 620 4 TYR B 78 O 120.1 86.0 67.0 REMARK 620 5 HOH B 500 O 43.9 105.7 42.1 105.4 REMARK 620 6 GLY C 77 O 90.0 145.8 60.1 84.9 46.2 REMARK 620 7 TYR C 78 O 144.2 146.3 119.3 84.5 108.0 65.1 REMARK 620 8 GLY D 77 O 59.5 120.1 88.1 143.4 46.0 59.0 85.1 REMARK 620 9 TYR D 78 O 85.8 85.8 144.4 146.5 108.1 118.4 84.5 66.5 REMARK 620 N 1 2 3 4 5 6 7 8 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: SEL REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: FILTER TO SELECT FOR POTASSIUM IONS OVER OTHER REMARK 800 MONOVALENT CATIONS. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 402 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 403 DBREF 1BL8 A 23 119 UNP P0A334 KCSA_STRLI 23 119 DBREF 1BL8 B 23 119 UNP P0A334 KCSA_STRLI 23 119 DBREF 1BL8 C 23 119 UNP P0A334 KCSA_STRLI 23 119 DBREF 1BL8 D 23 119 UNP P0A334 KCSA_STRLI 23 119 SEQADV 1BL8 CYS A 90 UNP P0A334 LEU 90 ENGINEERED MUTATION SEQADV 1BL8 CYS B 90 UNP P0A334 LEU 90 ENGINEERED MUTATION SEQADV 1BL8 CYS C 90 UNP P0A334 LEU 90 ENGINEERED MUTATION SEQADV 1BL8 CYS D 90 UNP P0A334 LEU 90 ENGINEERED MUTATION SEQRES 1 A 97 ALA LEU HIS TRP ARG ALA ALA GLY ALA ALA THR VAL LEU SEQRES 2 A 97 LEU VAL ILE VAL LEU LEU ALA GLY SER TYR LEU ALA VAL SEQRES 3 A 97 LEU ALA GLU ARG GLY ALA PRO GLY ALA GLN LEU ILE THR SEQRES 4 A 97 TYR PRO ARG ALA LEU TRP TRP SER VAL GLU THR ALA THR SEQRES 5 A 97 THR VAL GLY TYR GLY ASP LEU TYR PRO VAL THR LEU TRP SEQRES 6 A 97 GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA GLY ILE SEQRES 7 A 97 THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA THR TRP SEQRES 8 A 97 PHE VAL GLY ARG GLU GLN SEQRES 1 B 97 ALA LEU HIS TRP ARG ALA ALA GLY ALA ALA THR VAL LEU SEQRES 2 B 97 LEU VAL ILE VAL LEU LEU ALA GLY SER TYR LEU ALA VAL SEQRES 3 B 97 LEU ALA GLU ARG GLY ALA PRO GLY ALA GLN LEU ILE THR SEQRES 4 B 97 TYR PRO ARG ALA LEU TRP TRP SER VAL GLU THR ALA THR SEQRES 5 B 97 THR VAL GLY TYR GLY ASP LEU TYR PRO VAL THR LEU TRP SEQRES 6 B 97 GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA GLY ILE SEQRES 7 B 97 THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA THR TRP SEQRES 8 B 97 PHE VAL GLY ARG GLU GLN SEQRES 1 C 97 ALA LEU HIS TRP ARG ALA ALA GLY ALA ALA THR VAL LEU SEQRES 2 C 97 LEU VAL ILE VAL LEU LEU ALA GLY SER TYR LEU ALA VAL SEQRES 3 C 97 LEU ALA GLU ARG GLY ALA PRO GLY ALA GLN LEU ILE THR SEQRES 4 C 97 TYR PRO ARG ALA LEU TRP TRP SER VAL GLU THR ALA THR SEQRES 5 C 97 THR VAL GLY TYR GLY ASP LEU TYR PRO VAL THR LEU TRP SEQRES 6 C 97 GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA GLY ILE SEQRES 7 C 97 THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA THR TRP SEQRES 8 C 97 PHE VAL GLY ARG GLU GLN SEQRES 1 D 97 ALA LEU HIS TRP ARG ALA ALA GLY ALA ALA THR VAL LEU SEQRES 2 D 97 LEU VAL ILE VAL LEU LEU ALA GLY SER TYR LEU ALA VAL SEQRES 3 D 97 LEU ALA GLU ARG GLY ALA PRO GLY ALA GLN LEU ILE THR SEQRES 4 D 97 TYR PRO ARG ALA LEU TRP TRP SER VAL GLU THR ALA THR SEQRES 5 D 97 THR VAL GLY TYR GLY ASP LEU TYR PRO VAL THR LEU TRP SEQRES 6 D 97 GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA GLY ILE SEQRES 7 D 97 THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA THR TRP SEQRES 8 D 97 PHE VAL GLY ARG GLU GLN HET K A 401 1 HET K A 402 1 HET K A 403 1 HETNAM K POTASSIUM ION FORMUL 5 K 3(K 1+) FORMUL 8 HOH *(H2 O) HELIX 1 1 ARG A 27 GLU A 51 1 25 HELIX 2 2 TYR A 62 THR A 74 1 13 HELIX 3 3 LEU A 86 THR A 112 1 27 HELIX 4 4 ARG B 27 GLU B 51 1 25 HELIX 5 5 TYR B 62 THR B 74 1 13 HELIX 6 6 LEU B 86 THR B 112 1 27 HELIX 7 7 ARG C 27 GLU C 51 1 25 HELIX 8 8 TYR C 62 THR C 74 1 13 HELIX 9 9 LEU C 86 THR C 112 1 27 HELIX 10 10 ARG D 27 GLU D 51 1 25 HELIX 11 11 TYR D 62 THR D 74 1 13 HELIX 12 12 LEU D 86 THR D 112 1 27 LINK O THR A 75 K K A 402 1555 1555 3.40 LINK O THR A 75 K K A 403 1555 1555 3.07 LINK OG1 THR A 75 K K A 403 1555 1555 3.19 LINK O VAL A 76 K K A 402 1555 1555 3.43 LINK O GLY A 77 K K A 401 1555 1555 3.14 LINK O TYR A 78 K K A 401 1555 1555 3.08 LINK K K A 401 O GLY B 77 1555 1555 3.12 LINK K K A 401 O TYR B 78 1555 1555 3.07 LINK K K A 401 O HOH B 500 1555 1555 3.41 LINK K K A 401 O GLY C 77 1555 1555 3.15 LINK K K A 401 O TYR C 78 1555 1555 3.21 LINK K K A 401 O GLY D 77 1555 1555 3.15 LINK K K A 401 O TYR D 78 1555 1555 3.08 LINK K K A 402 K K A 403 1555 1555 3.30 LINK K K A 402 O THR B 75 1555 1555 3.38 LINK K K A 402 O VAL B 76 1555 1555 3.40 LINK K K A 402 O THR C 75 1555 1555 3.35 LINK K K A 402 O VAL C 76 1555 1555 3.47 LINK K K A 402 O THR D 75 1555 1555 3.39 LINK K K A 402 O VAL D 76 1555 1555 3.41 LINK K K A 403 O THR B 75 1555 1555 2.93 LINK K K A 403 OG1 THR B 75 1555 1555 3.03 LINK K K A 403 O THR C 75 1555 1555 3.04 LINK K K A 403 OG1 THR C 75 1555 1555 3.00 LINK K K A 403 O THR D 75 1555 1555 3.14 LINK K K A 403 OG1 THR D 75 1555 1555 3.19 SITE 1 SEL 4 VAL A 76 GLY A 77 TYR A 78 GLY A 79 SITE 1 AC1 8 GLY A 77 TYR A 78 GLY B 77 TYR B 78 SITE 2 AC1 8 GLY C 77 TYR C 78 GLY D 77 TYR D 78 SITE 1 AC2 9 THR A 75 VAL A 76 K A 403 THR B 75 SITE 2 AC2 9 VAL B 76 THR C 75 VAL C 76 THR D 75 SITE 3 AC2 9 VAL D 76 SITE 1 AC3 5 THR A 75 K A 402 THR B 75 THR C 75 SITE 2 AC3 5 THR D 75 CRYST1 128.780 68.930 112.040 90.00 124.63 90.00 C 1 2 1 16 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 0.007765 0.000000 0.005363 0.00000 SCALE2 0.000000 0.014507 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010847 0.00000 MTRIX1 1 0.126600 0.928780 0.348340 31.41247 1 MTRIX2 1 -0.931190 -0.009730 0.364390 86.76519 1 MTRIX3 1 0.341830 -0.370510 0.863640 -12.10887 1 MTRIX1 2 -0.736910 -0.010340 0.675910 112.17546 1 MTRIX2 2 0.004580 -0.999940 -0.010300 53.01701 1 MTRIX3 2 0.675980 -0.004490 0.736910 -43.35083 1 MTRIX1 3 0.137220 -0.931030 0.338160 80.28391 1 MTRIX2 3 0.929330 0.002860 -0.369240 -33.25713 1 MTRIX3 3 0.342800 0.364930 0.865630 -31.77395 1