cmd.read_pdbstr("""\ HEADER MEMBRANE PROTEIN 03-AUG-01 1JQ2 \ TITLE POTASSIUM CHANNEL (KCSA) OPEN GATE MODEL \ COMPND MOL_ID: 1; \ COMPND 2 MOLECULE: VOLTAGE-GATED POTASSIUM CHANNEL; \ COMPND 3 CHAIN: A, B, C, D; \ COMPND 4 FRAGMENT: INNER TRANSMEMBRANE SEGMENT (RESIDUES 86-119); \ COMPND 5 ENGINEERED: 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-2 BLUE; \ SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; \ SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PQE32 \ KEYWDS POTASSIUM CHANNEL, INTEGRAL MEMBRANE PROTEIN, OPEN STATE, MEMBRANE \ KEYWDS 2 PROTEIN \ EXPDTA SOLUTION NMR \ NUMMDL 50 \ MDLTYP CA ATOMS ONLY, CHAIN A, B, C, D \ AUTHOR Y.-S.LIU,P.SOMPORNPISUT,E.PEROZO \ REVDAT 5 22-MAY-24 1JQ2 1 REMARK \ REVDAT 4 27-OCT-21 1JQ2 1 REMARK SEQADV \ REVDAT 3 24-FEB-09 1JQ2 1 VERSN \ REVDAT 2 01-APR-03 1JQ2 1 JRNL \ REVDAT 1 03-OCT-01 1JQ2 0 \ JRNL AUTH Y.S.LIU,P.SOMPORNPISUT,E.PEROZO \ JRNL TITL STRUCTURE OF THE KCSA CHANNEL INTRACELLULAR GATE IN THE OPEN \ JRNL TITL 2 STATE. \ JRNL REF NAT.STRUCT.BIOL. V. 8 883 2001 \ JRNL REFN ISSN 1072-8368 \ JRNL PMID 11573095 \ JRNL DOI 10.1038/NSB1001-883 \ REMARK 1 \ REMARK 1 REFERENCE 1 \ REMARK 1 AUTH P.SOMPORNPISUT,Y.-S.LIU,E.PEROZO \ REMARK 1 TITL CALCULATION OF RIGID BODY CONFORMATIONAL CHANGES USING \ REMARK 1 TITL 2 RESTRAINT-DRIVEN CARTESIAN TRANSFORMATIONS \ REMARK 1 REF TO BE PUBLISHED \ REMARK 1 REFN \ REMARK 1 REFERENCE 2 \ REMARK 1 AUTH E.PEROZO,D.M.CORTES,L.G.CUELLO \ REMARK 1 TITL STRUCTURAL REARRANGEMENTS UNDERLYING K+-CHANNEL ACTIVATION \ REMARK 1 TITL 2 GATING \ REMARK 1 REF SCIENCE V. 285 73 1999 \ REMARK 1 REFN ISSN 0036-8075 \ REMARK 1 DOI 10.1126/SCIENCE.285.5424.73 \ REMARK 1 REFERENCE 3 \ REMARK 1 AUTH D.A.DOYLE,J.MORAIS CABRAL,R.A.PFUETZNER,A.KUO,J.M.GULBIS, \ REMARK 1 AUTH 2 S.L.COHEN,B.T.CHAIT,R.MACKINNON \ REMARK 1 TITL THE STRUCTURE OF THE POTASSIUM CHANNEL: MOLECULAR BASIS OF \ REMARK 1 TITL 2 K+ CONDUCTION AND SELECTIVITY \ REMARK 1 REF SCIENCE V. 280 69 1998 \ REMARK 1 REFN ISSN 0036-8075 \ REMARK 1 DOI 10.1126/SCIENCE.280.5360.69 \ REMARK 2 \ REMARK 2 RESOLUTION. NOT APPLICABLE. \ REMARK 3 \ REMARK 3 REFINEMENT. \ REMARK 3 PROGRAM : AMBER 6.0 \ REMARK 3 AUTHORS : D.A.CASE ET AL. \ REMARK 3 \ REMARK 3 OTHER REFINEMENT REMARKS: \ REMARK 3 THE STRUCTURE ARE BASED ON: 1) TEN PAIRS OF INTER-SUBUNIT \ REMARK 3 DISTANCES FOR THE KCSA INNER \ REMARK 3 HELICAL BUNDLE IN THE CLOSED AND THE OPEN STATES AND 2) THE USE OF \ REMARK 3 THE CRYSTAL STRUCTURE \ REMARK 3 AS THE CHANNEL IN THE CLOSED STATE, AND AS THE REFERENCE \ REMARK 3 STRUCTURE. THE COMPUTER PROGRAM \ REMARK 3 REDCAT SEARCHES (RESTRAINT-DRIVEN CARTESIAN TRANSFORMATION) BASED \ REMARK 3 ON THE EXHAUSTIVE SAMPLING \ REMARK 3 OF RIGID-BODY MOVEMENT IN CARTESIAN SPACE FOR THE TM2 INNER BUNDLE \ REMARK 3 IN THE OPEN STATE WERE \ REMARK 3 ALLOWED TO CONVERGE TO A MINIMAL PENALTY VALUE. THE ENSEMBLE OF \ REMARK 3 THE 50 LOWEST PENALTY \ REMARK 3 CONFORMERS WAS SUBJECTED TO MOLECULAR MECHANIC ENERGY \ REMARK 3 MINIMIZATION. FINAL REFINEMENT WAS \ REMARK 3 PERFORMED ON THE AVERAGE OPEN HELICAL BUNDLE BY ENERGY \ REMARK 3 MINIMIZATION. \ REMARK 4 \ REMARK 4 1JQ2 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 \ REMARK 99 \ REMARK 99 THE STRUCTURE CONTAINS ONLY ALPHA-CARBONS BECAUSE \ REMARK 99 THE EXPERIMENTAL DATA USED TO CALCULATE THE STRUCTURES \ REMARK 99 ARE GOOD ENOUGH ONLY TO THE BACKBONE LEVEL. \ REMARK 100 \ REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-AUG-01. \ REMARK 100 THE DEPOSITION ID IS D_1000014054. \ REMARK 210 \ REMARK 210 EXPERIMENTAL DETAILS \ REMARK 210 EXPERIMENT TYPE : NMR \ REMARK 210 TEMPERATURE (KELVIN) : 150.0; 150.0 \ REMARK 210 PH : 7.0; 4.0 \ REMARK 210 IONIC STRENGTH : 20 MM CITRATE PHOSPHATE; 20 MM \ REMARK 210 CITRATE PHOSPHATE \ REMARK 210 PRESSURE : 1 ATM; 1 ATM \ REMARK 210 SAMPLE CONTENTS : 1.0 MG/ML MIXED WITH \ REMARK 210 METHANETHIOSULFONATE SPIN LABEL \ REMARK 210 \ REMARK 210 NMR EXPERIMENTS CONDUCTED : CONTINUOUS WAVE EPR \ REMARK 210 SPECTROMETER FIELD STRENGTH : 3400 MHZ \ REMARK 210 SPECTROMETER MODEL : EMX \ REMARK 210 SPECTROMETER MANUFACTURER : BRUKER \ REMARK 210 \ REMARK 210 STRUCTURE DETERMINATION. \ REMARK 210 SOFTWARE USED : EPR AQUISIT 2.32, REDCAT \ REMARK 210 METHOD USED : FOURIER DECONVOLUTION, \ REMARK 210 CONFORMATIONAL GRID SEARCH A \ REMARK 210 CARTESAIN REPRESENTATION \ REMARK 210 MOLECULAR MECHANIC ENERGY \ REMARK 210 MINIMIZATION \ REMARK 210 \ REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 \ REMARK 210 CONFORMERS, NUMBER SUBMITTED : 50 \ REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LOWEST \ REMARK 210 PENALTY \ REMARK 210 \ REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL \ REMARK 210 \ REMARK 210 REMARK: NULL \ REMARK 215 \ REMARK 215 NMR STUDY \ REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION \ REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT \ REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON \ REMARK 215 THESE RECORDS ARE MEANINGLESS. \ 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 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 900 \ REMARK 900 RELATED ENTRIES \ REMARK 900 RELATED ID: 1JQ1 RELATED DB: PDB \ REMARK 900 1JQ1 CONTAINS THE MINIMIZED AVERAGE STRUCTURE \ DBREF 1JQ2 A 86 119 UNP P0A334 KCSA_STRLI 86 119 \ DBREF 1JQ2 B 86 119 UNP P0A334 KCSA_STRLI 86 119 \ DBREF 1JQ2 C 86 119 UNP P0A334 KCSA_STRLI 86 119 \ DBREF 1JQ2 D 86 119 UNP P0A334 KCSA_STRLI 86 119 \ SEQADV 1JQ2 CYS A 90 UNP P0A334 LEU 90 ENGINEERED MUTATION \ SEQADV 1JQ2 CYS B 90 UNP P0A334 LEU 90 ENGINEERED MUTATION \ SEQADV 1JQ2 CYS C 90 UNP P0A334 LEU 90 ENGINEERED MUTATION \ SEQADV 1JQ2 CYS D 90 UNP P0A334 LEU 90 ENGINEERED MUTATION \ SEQRES 1 A 34 LEU TRP GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA \ SEQRES 2 A 34 GLY ILE THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA \ SEQRES 3 A 34 THR TRP PHE VAL GLY ARG GLU GLN \ SEQRES 1 B 34 LEU TRP GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA \ SEQRES 2 B 34 GLY ILE THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA \ SEQRES 3 B 34 THR TRP PHE VAL GLY ARG GLU GLN \ SEQRES 1 C 34 LEU TRP GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA \ SEQRES 2 C 34 GLY ILE THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA \ SEQRES 3 C 34 THR TRP PHE VAL GLY ARG GLU GLN \ SEQRES 1 D 34 LEU TRP GLY ARG CYS VAL ALA VAL VAL VAL MET VAL ALA \ SEQRES 2 D 34 GLY ILE THR SER PHE GLY LEU VAL THR ALA ALA LEU ALA \ SEQRES 3 D 34 THR TRP PHE VAL GLY ARG GLU GLN \ CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 1 \ 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 1.000000 0.000000 0.000000 0.00000 \ SCALE2 0.000000 1.000000 0.000000 0.00000 \ SCALE3 0.000000 0.000000 1.000000 0.00000 \ MODEL 1 \ TER 35 GLN A 119 \ TER 70 GLN B 119 \ TER 105 GLN C 119 \ ATOM 106 CA LEU D 86 0.804 20.948 -20.320 1.00 0.00 C \ ATOM 107 CA TRP D 87 0.512 20.992 -16.460 1.00 0.00 C \ ATOM 108 CA GLY D 88 -3.228 20.000 -16.164 1.00 0.00 C \ ATOM 109 CA ARG D 89 -2.208 16.328 -16.840 1.00 0.00 C \ ATOM 110 CA CYS D 90 0.468 16.624 -14.084 1.00 0.00 C \ ATOM 111 CA VAL D 91 -2.292 17.812 -11.660 1.00 0.00 C \ ATOM 112 CA ALA D 92 -4.352 14.804 -12.900 1.00 0.00 C \ ATOM 113 CA VAL D 93 -1.424 12.400 -12.044 1.00 0.00 C \ ATOM 114 CA VAL D 94 -1.096 14.060 -8.556 1.00 0.00 C \ ATOM 115 CA VAL D 95 -4.840 13.692 -7.672 1.00 0.00 C \ ATOM 116 CA MET D 96 -4.812 10.136 -9.192 1.00 0.00 C \ ATOM 117 CA VAL D 97 -1.912 8.904 -6.956 1.00 0.00 C \ ATOM 118 CA ALA D 98 -3.344 10.820 -3.940 1.00 0.00 C \ ATOM 119 CA GLY D 99 -6.760 9.140 -4.600 1.00 0.00 C \ ATOM 120 CA ILE D 100 -5.184 5.632 -5.000 1.00 0.00 C \ ATOM 121 CA THR D 101 -3.148 6.160 -1.760 1.00 0.00 C \ ATOM 122 CA SER D 102 -6.148 7.640 0.144 1.00 0.00 C \ ATOM 123 CA PHE D 103 -8.780 4.976 -0.752 1.00 0.00 C \ ATOM 124 CA GLY D 104 -6.200 2.176 -0.256 1.00 0.00 C \ ATOM 125 CA LEU D 105 -5.496 3.672 3.196 1.00 0.00 C \ ATOM 126 CA VAL D 106 -9.212 4.108 4.196 1.00 0.00 C \ ATOM 127 CA THR D 107 -9.208 0.260 4.076 1.00 0.00 C \ ATOM 128 CA ALA D 108 -5.700 0.008 5.656 1.00 0.00 C \ ATOM 129 CA ALA D 109 -6.716 -0.124 9.360 1.00 0.00 C \ ATOM 130 CA LEU D 110 -9.140 -3.068 8.892 1.00 0.00 C \ ATOM 131 CA ALA D 111 -6.596 -5.924 8.416 1.00 0.00 C \ ATOM 132 CA THR D 112 -4.176 -4.736 11.192 1.00 0.00 C \ ATOM 133 CA TRP D 113 -7.320 -4.352 13.388 1.00 0.00 C \ ATOM 134 CA PHE D 114 -8.272 -7.960 12.316 1.00 0.00 C \ ATOM 135 CA VAL D 115 -4.732 -9.328 13.124 1.00 0.00 C \ ATOM 136 CA GLY D 116 -5.376 -7.560 16.488 1.00 0.00 C \ ATOM 137 CA ARG D 117 -7.504 -10.756 17.112 1.00 0.00 C \ ATOM 138 CA GLU D 118 -4.428 -12.988 17.644 1.00 0.00 C \ ATOM 139 CA GLN D 119 -6.268 -13.564 21.048 1.00 0.00 C \ TER 140 GLN D 119 \ ENDMDL \ """, "1jq2chainD") cmd.hide("all") cmd.color('grey70', "1jq2chainD") cmd.show('cartoon', "1jq2chainD") cmd.center("1jq2chainD", state=0, origin=1) cmd.zoom("1jq2chainD", animate=-1) cmd.select("e1jq2D1", "c. D & i. 86-119") cmd.color("red", "e1jq2D1") cmd.disable("e1jq2D1")