HEADER TRANSPORT PROTEIN 15-MAY-14 4QE7 TITLE OPEN MTHK PORE STRUCTURE SOAKED IN 10 MM BA2+/100 MM NA+ COMPND MOL_ID: 1; COMPND 2 MOLECULE: CALCIUM-GATED POTASSIUM CHANNEL MTHK; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: UNP RESIDUES 19-99; 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 4QE7 1 REMARK SEQADV LINK REVDAT 2 10-DEC-14 4QE7 1 JRNL REVDAT 1 09-JUL-14 4QE7 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. 2.40 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) : 2.40 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 : 3231 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) : 0.225 REMARK 3 R VALUE (WORKING SET) : 0.221 REMARK 3 FREE R VALUE : 0.265 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.100 REMARK 3 FREE R VALUE TEST SET COUNT : 323 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) : 2.40 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.46 REMARK 3 REFLECTION IN BIN (WORKING SET) : 208 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 BIN R VALUE (WORKING SET) : 0.3110 REMARK 3 BIN FREE R VALUE SET COUNT : 19 REMARK 3 BIN FREE R VALUE : 0.2640 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 633 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 3 REMARK 3 SOLVENT ATOMS : 28 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 67.42 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -2.38000 REMARK 3 B22 (A**2) : -2.38000 REMARK 3 B33 (A**2) : 4.76000 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): 0.588 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.297 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.211 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 18.629 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.945 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.932 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 652 ; 0.009 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 894 ; 1.127 ; 1.948 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 80 ; 4.689 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 22 ;20.066 ;21.364 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 93 ;14.545 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 2 ;22.811 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 110 ; 0.076 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 472 ; 0.004 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 324 ; 0.208 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 474 ; 0.310 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 26 ; 0.123 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 56 ; 0.279 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 4 ; 0.118 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL 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): 399 ; 0.339 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 649 ; 0.649 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 260 ; 1.034 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 245 ; 1.699 ; 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): 11.9182 -4.2817 20.4694 REMARK 3 T TENSOR REMARK 3 T11: 0.0072 T22: -0.0017 REMARK 3 T33: 0.0668 T12: -0.0226 REMARK 3 T13: -0.0153 T23: 0.0038 REMARK 3 L TENSOR REMARK 3 L11: 1.6425 L22: 2.0567 REMARK 3 L33: 17.0339 L12: 0.9555 REMARK 3 L13: -4.7346 L23: -0.5001 REMARK 3 S TENSOR REMARK 3 S11: 0.0588 S12: -0.1300 S13: 0.1954 REMARK 3 S21: 0.1328 S22: 0.0121 S23: 0.1386 REMARK 3 S31: 0.3013 S32: 0.7604 S33: -0.0709 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): 19.6201 -3.8880 10.5944 REMARK 3 T TENSOR REMARK 3 T11: 0.0525 T22: -0.0074 REMARK 3 T33: 0.0322 T12: -0.0404 REMARK 3 T13: -0.0327 T23: -0.0279 REMARK 3 L TENSOR REMARK 3 L11: 2.7949 L22: 0.4122 REMARK 3 L33: 5.3269 L12: -0.7508 REMARK 3 L13: -0.7289 L23: -0.8441 REMARK 3 S TENSOR REMARK 3 S11: 0.0410 S12: -0.0238 S13: -0.0383 REMARK 3 S21: -0.0038 S22: -0.0787 S23: -0.0507 REMARK 3 S31: 0.1304 S32: -0.0577 S33: 0.0377 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): 19.7961 -1.9758 23.7287 REMARK 3 T TENSOR REMARK 3 T11: 0.0561 T22: 0.0837 REMARK 3 T33: -0.0200 T12: -0.0485 REMARK 3 T13: 0.0706 T23: 0.0325 REMARK 3 L TENSOR REMARK 3 L11: 4.0583 L22: 14.7124 REMARK 3 L33: 18.4833 L12: -4.8462 REMARK 3 L13: 6.0324 L23: -15.0666 REMARK 3 S TENSOR REMARK 3 S11: 0.0222 S12: -0.5291 S13: -0.1329 REMARK 3 S21: 0.5588 S22: 0.1134 S23: 0.4201 REMARK 3 S31: -0.0676 S32: -0.3617 S33: -0.1357 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 4QE7 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_1000085942. 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 : 3576 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 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 (%) : 97.5 REMARK 200 DATA REDUNDANCY : 11.80 REMARK 200 R MERGE (I) : 0.09200 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 41.2000 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 (%): 47.86 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.36 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 30.49900 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 30.49900 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 30.49900 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 30.49900 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 30.49900 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 30.49900 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 30.49900 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 30.49900 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: 7580 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 14210 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -130.0 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 60.99800 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 30.49900 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 -30.49900 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 30.49900 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 30.49900 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 BA BA A 101 LIES ON A SPECIAL POSITION. REMARK 375 BA BA A 102 LIES ON A SPECIAL POSITION. REMARK 375 BA BA A 103 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 201 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 202 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 BA A 102 BA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 59 O REMARK 620 2 VAL A 60 O 69.5 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 BA A 103 BA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 59 OG1 REMARK 620 2 THR A 59 O 55.4 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 BA A 101 BA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 VAL A 60 O REMARK 620 2 GLY A 61 O 63.1 REMARK 620 3 HOH A 201 O 116.6 62.2 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 BA A 101 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BA A 102 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BA A 103 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: 4QE9 RELATED DB: PDB DBREF 4QE7 A 19 99 UNP O27564 MTHK_METTH 19 99 SEQADV 4QE7 HIS A 68 UNP O27564 SER 68 ENGINEERED MUTATION SEQADV 4QE7 CYS A 77 UNP O27564 VAL 77 ENGINEERED MUTATION SEQRES 1 A 81 PRO ALA THR ARG ILE LEU LEU LEU VAL LEU ALA VAL ILE SEQRES 2 A 81 ILE TYR GLY THR ALA GLY PHE HIS PHE ILE GLU GLY GLU SEQRES 3 A 81 SER TRP THR VAL SER LEU TYR TRP THR PHE VAL THR ILE SEQRES 4 A 81 ALA THR VAL GLY TYR GLY ASP TYR SER PRO HIS THR PRO SEQRES 5 A 81 LEU GLY MET TYR PHE THR CYS THR LEU ILE VAL LEU GLY SEQRES 6 A 81 ILE GLY THR PHE ALA VAL ALA VAL GLU ARG LEU LEU GLU SEQRES 7 A 81 PHE LEU ILE HET BA A 101 1 HET BA A 102 1 HET BA A 103 1 HETNAM BA BARIUM ION FORMUL 2 BA 3(BA 2+) FORMUL 5 HOH *28(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 ILE A 99 1 31 LINK O THR A 59 BA BA A 102 1555 1555 3.01 LINK OG1 THR A 59 BA BA A 103 1555 1555 2.98 LINK O THR A 59 BA BA A 103 1555 1555 3.01 LINK O VAL A 60 BA BA A 101 1555 1555 3.03 LINK O VAL A 60 BA BA A 102 1555 1555 3.12 LINK O GLY A 61 BA BA A 101 1555 1555 2.91 LINK BA BA A 101 O HOH A 201 1555 1555 2.94 SITE 1 AC1 4 VAL A 60 GLY A 61 BA A 102 HOH A 201 SITE 1 AC2 4 THR A 59 VAL A 60 BA A 101 BA A 103 SITE 1 AC3 2 THR A 59 BA A 102 CRYST1 60.998 60.998 45.320 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 0.016394 0.000000 0.000000 0.00000 SCALE2 0.000000 0.016394 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022065 0.00000