HEADER TRANSPORT PROTEIN 15-MAY-14 4QE9 TITLE OPEN MTHK PORE STRUCTURE SOAKED IN 10 MM BA2+/100 MM K+ COMPND MOL_ID: 1; COMPND 2 MOLECULE: CALCIUM-GATED POTASSIUM CHANNEL MTHK; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: UNP RESIDUES 18-100; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: METHANOTHERMOBACTER THERMAUTOTROPHICUS; SOURCE 3 ORGANISM_TAXID: 187420; SOURCE 4 STRAIN: ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / DELTA H; SOURCE 5 GENE: MTHK, MTH_1520; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS TRANSMEMBRANE, ION CHANNEL, OPEN CONFORMATION, TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR R.GUO,W.ZENG,H.CUI,L.CHEN,S.YE REVDAT 3 08-NOV-23 4QE9 1 REMARK SEQADV LINK REVDAT 2 10-DEC-14 4QE9 1 JRNL REVDAT 1 09-JUL-14 4QE9 0 JRNL AUTH R.GUO,W.ZENG,H.CUI,L.CHEN,S.YE JRNL TITL IONIC INTERACTIONS OF BA2+ BLOCKADES IN THE MTHK K+ CHANNEL JRNL REF J.GEN.PHYSIOL. V. 144 193 2014 JRNL REFN ISSN 0022-1295 JRNL PMID 25024268 JRNL DOI 10.1085/JGP.201411192 REMARK 2 REMARK 2 RESOLUTION. 2.15 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0019 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.15 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.50 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 4389 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 + TEST SET) : 0.204 REMARK 3 R VALUE (WORKING SET) : 0.198 REMARK 3 FREE R VALUE : 0.257 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.800 REMARK 3 FREE R VALUE TEST SET COUNT : 478 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.15 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.21 REMARK 3 REFLECTION IN BIN (WORKING SET) : 322 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 BIN R VALUE (WORKING SET) : 0.2430 REMARK 3 BIN FREE R VALUE SET COUNT : 31 REMARK 3 BIN FREE R VALUE : 0.4090 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 648 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 43 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 51.79 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.69000 REMARK 3 B22 (A**2) : -0.69000 REMARK 3 B33 (A**2) : 1.39000 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.291 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.228 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.139 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 10.884 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.954 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.910 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 667 ; 0.010 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 916 ; 1.149 ; 1.950 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 82 ; 4.596 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 23 ;23.916 ;21.739 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 95 ;14.110 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 2 ;10.260 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 113 ; 0.078 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 488 ; 0.004 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 361 ; 0.225 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 488 ; 0.315 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 40 ; 0.144 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): 1 ; 0.001 ; 0.200 REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 77 ; 0.451 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 6 ; 0.138 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): 3 ; 0.001 ; 0.200 REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 409 ; 0.523 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 667 ; 0.984 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 263 ; 1.399 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 249 ; 2.188 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 3 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 19 A 42 REMARK 3 ORIGIN FOR THE GROUP (A): 11.9353 -4.2624 20.2995 REMARK 3 T TENSOR REMARK 3 T11: -0.0976 T22: -0.0735 REMARK 3 T33: 0.0007 T12: -0.0251 REMARK 3 T13: 0.0133 T23: -0.0160 REMARK 3 L TENSOR REMARK 3 L11: 1.5030 L22: 2.7699 REMARK 3 L33: 19.1667 L12: 1.1551 REMARK 3 L13: -2.5794 L23: -2.8934 REMARK 3 S TENSOR REMARK 3 S11: 0.1302 S12: -0.0728 S13: 0.2861 REMARK 3 S21: 0.1057 S22: -0.1648 S23: 0.3711 REMARK 3 S31: 0.4777 S32: 0.7595 S33: 0.0346 REMARK 3 REMARK 3 TLS GROUP : 2 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 43 A 69 REMARK 3 ORIGIN FOR THE GROUP (A): 19.6274 -3.8643 10.4169 REMARK 3 T TENSOR REMARK 3 T11: -0.0150 T22: -0.0521 REMARK 3 T33: -0.0583 T12: -0.0351 REMARK 3 T13: 0.0036 T23: -0.0071 REMARK 3 L TENSOR REMARK 3 L11: 2.7239 L22: 0.8452 REMARK 3 L33: 2.3084 L12: -0.9992 REMARK 3 L13: 0.4684 L23: -1.2045 REMARK 3 S TENSOR REMARK 3 S11: -0.0064 S12: 0.1123 S13: -0.1588 REMARK 3 S21: -0.0365 S22: 0.0269 S23: 0.0703 REMARK 3 S31: 0.0662 S32: -0.1076 S33: -0.0205 REMARK 3 REMARK 3 TLS GROUP : 3 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 70 A 99 REMARK 3 ORIGIN FOR THE GROUP (A): 19.8018 -1.9727 23.5661 REMARK 3 T TENSOR REMARK 3 T11: -0.0550 T22: 0.0001 REMARK 3 T33: -0.0663 T12: 0.0039 REMARK 3 T13: 0.0279 T23: 0.0132 REMARK 3 L TENSOR REMARK 3 L11: 3.5503 L22: 11.8647 REMARK 3 L33: 17.0080 L12: -4.9660 REMARK 3 L13: 6.4263 L23: -14.1309 REMARK 3 S TENSOR REMARK 3 S11: 0.1016 S12: -0.3966 S13: -0.1351 REMARK 3 S21: 0.0788 S22: 0.2381 S23: 0.3776 REMARK 3 S31: -0.0641 S32: -0.3781 S33: -0.3397 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 4QE9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 20-MAY-14. REMARK 100 THE DEPOSITION ID IS D_1000085944. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-JUN-13 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRF REMARK 200 BEAMLINE : BL17U REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9786 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 4888 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.150 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 200 DATA REDUNDANCY : 10.50 REMARK 200 R MERGE (I) : 0.10500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 26.6000 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASES REMARK 200 STARTING MODEL: PDB ENTRY 3LDC REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.19 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.29 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 3.0-3.5M 1,6-HEXANDIOL, 100MM HEPES, REMARK 280 PH 7.5, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 4 21 2 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 -Y+1/2,X+1/2,Z REMARK 290 4555 Y+1/2,-X+1/2,Z REMARK 290 5555 -X+1/2,Y+1/2,-Z REMARK 290 6555 X+1/2,-Y+1/2,-Z REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-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 0.000000 -1.000000 0.000000 30.50250 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 30.50250 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 30.50250 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 30.50250 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 30.50250 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 30.50250 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 30.50250 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 30.50250 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 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 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 REMARK 350 TOTAL BURIED SURFACE AREA: 6080 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 15470 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -72.0 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 61.00500 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 30.50250 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 -30.50250 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 30.50250 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 30.50250 REMARK 350 BIOMT3 4 0.000000 0.000000 1.000000 0.00000 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 K K A 201 LIES ON A SPECIAL POSITION. REMARK 375 K K A 202 LIES ON A SPECIAL POSITION. REMARK 375 K K A 203 LIES ON A SPECIAL POSITION. REMARK 375 K K A 204 LIES ON A SPECIAL POSITION. REMARK 375 K K A 205 LIES ON A SPECIAL POSITION. REMARK 375 K K A 206 LIES ON A SPECIAL POSITION. 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 203 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 59 O REMARK 620 2 VAL A 60 O 70.9 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 204 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 59 OG1 REMARK 620 2 THR A 59 O 58.0 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 202 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 VAL A 60 O REMARK 620 2 GLY A 61 O 69.4 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 201 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLY A 61 O REMARK 620 2 TYR A 62 O 70.3 REMARK 620 N 1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 202 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 203 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 204 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 206 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3LDC RELATED DB: PDB REMARK 900 RELATED ID: 3LDD RELATED DB: PDB REMARK 900 RELATED ID: 3LDE RELATED DB: PDB REMARK 900 RELATED ID: 4QE7 RELATED DB: PDB DBREF 4QE9 A 18 100 UNP O27564 MTHK_METTH 18 100 SEQADV 4QE9 HIS A 68 UNP O27564 SER 68 ENGINEERED MUTATION SEQADV 4QE9 CYS A 77 UNP O27564 VAL 77 ENGINEERED MUTATION SEQRES 1 A 83 VAL PRO ALA THR ARG ILE LEU LEU LEU VAL LEU ALA VAL SEQRES 2 A 83 ILE ILE TYR GLY THR ALA GLY PHE HIS PHE ILE GLU GLY SEQRES 3 A 83 GLU SER TRP THR VAL SER LEU TYR TRP THR PHE VAL THR SEQRES 4 A 83 ILE ALA THR VAL GLY TYR GLY ASP TYR SER PRO HIS THR SEQRES 5 A 83 PRO LEU GLY MET TYR PHE THR CYS THR LEU ILE VAL LEU SEQRES 6 A 83 GLY ILE GLY THR PHE ALA VAL ALA VAL GLU ARG LEU LEU SEQRES 7 A 83 GLU PHE LEU ILE ASN HET K A 201 1 HET K A 202 1 HET K A 203 1 HET K A 204 1 HET K A 205 1 HET K A 206 1 HETNAM K POTASSIUM ION FORMUL 2 K 6(K 1+) FORMUL 8 HOH *43(H2 O) HELIX 1 1 PRO A 19 GLY A 43 1 25 HELIX 2 2 SER A 45 ALA A 58 1 14 HELIX 3 3 THR A 69 ASN A 100 1 32 LINK O THR A 59 K K A 203 1555 1555 2.89 LINK OG1 THR A 59 K K A 204 1555 1555 2.84 LINK O THR A 59 K K A 204 1555 1555 3.07 LINK O VAL A 60 K K A 202 1555 1555 2.95 LINK O VAL A 60 K K A 203 1555 1555 2.91 LINK O GLY A 61 K K A 201 1555 1555 3.04 LINK O GLY A 61 K K A 202 1555 1555 2.82 LINK O TYR A 62 K K A 201 1555 1555 3.03 LINK K K A 206 O HOH A 341 1555 1555 2.79 SITE 1 AC1 3 GLY A 61 TYR A 62 K A 202 SITE 1 AC2 4 VAL A 60 GLY A 61 K A 201 K A 203 SITE 1 AC3 4 THR A 59 VAL A 60 K A 202 K A 204 SITE 1 AC4 3 THR A 59 K A 203 K A 206 SITE 1 AC5 3 THR A 59 K A 204 HOH A 341 CRYST1 61.005 61.005 44.950 90.00 90.00 90.00 P 4 21 2 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 0.016392 0.000000 0.000000 0.00000 SCALE2 0.000000 0.016392 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022247 0.00000