HEADER MEMBRANE PROTEIN 02-FEB-26 28IZ TITLE STRUCTURE OF THE HUMAN TWO PORE DOMAIN POTASSIUM ION CHANNEL TASK-3 TITLE 2 L122V MUTANT (K2P9.1) COMPND MOL_ID: 1; COMPND 2 MOLECULE: POTASSIUM CHANNEL SUBFAMILY K MEMBER 9; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: ACID-SENSITIVE POTASSIUM CHANNEL PROTEIN TASK-3,TWIK-RELATED COMPND 5 ACID-SENSITIVE K(+) CHANNEL 3,TWO PORE POTASSIUM CHANNEL KT3.2,TWO COMPND 6 PORE K(+) CHANNEL KT3.2; COMPND 7 ENGINEERED: YES; COMPND 8 MUTATION: YES; COMPND 9 OTHER_DETAILS: M1 TO D259 CONTAINING L122V MUTATION, WITH A HRV 3C COMPND 10 PROTEASE SITE. FUSED PURIFICATION TAGS WERE CLEAVED PRIOR TO EM COMPND 11 SAMPLE PREPARATION. SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: KCNK9, TASK3; SOURCE 6 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 7108; SOURCE 8 EXPRESSION_SYSTEM_CELL_LINE: SF9; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: BACMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PFB-C3C10HF-LIC KEYWDS K2P, MEMBRANE PROTEIN, POTASSIUM CHANNEL, ION CHANNEL EXPDTA ELECTRON MICROSCOPY AUTHOR P.R.HALL,K.E.J.RODSTROM,S.J.TUCKER REVDAT 1 19-AUG-26 28IZ 0 JRNL AUTH K.M.CROWTHER,T.R.H.JOUEN-TACHOIRE,P.PROKS,P.R.HALL, JRNL AUTH 2 E.L.VEALE,J.SORMANN,K.E.J.RODSTROM,T.MULLER,S.B.WORTMANN, JRNL AUTH 3 N.BARISIC,N.HAUSER,V.SALPIETRO,R.FORSYTH,L.WILLIAMS, JRNL AUTH 4 N.DERRABI,C.A.BACINO,J.A.ROSENFELD,H.HOULDEN,S.NEWSTEAD, JRNL AUTH 5 C.F.WRIGHT,J.FASHAM,A.A.MATHIE,R.MAROOFIAN,S.J.TUCKER JRNL TITL EQUIVALENT GAIN-OF-FUNCTION VARIANTS IN KCNK3 AND KCNK9 AND JRNL TITL 2 THEIR CONTRIBUTION TO DISTINCT TASK K2P CHANNELOPATHIES. JRNL REF J.GEN.PHYSIOL. V. 158 2026 JRNL REFN ESSN 1540-7748 JRNL PMID 42560358 JRNL DOI 10.1085/JGP.202613989 REMARK 2 REMARK 2 RESOLUTION. 2.83 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, EPU, CRYOSPARC, COOT, REMARK 3 PHENIX, CRYOSPARC, CRYOSPARC, CRYOSPARC, REMARK 3 CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : 9G9V REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : FLEXIBLE FIT REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 60.320 REMARK 3 REMARK 3 FITTING PROCEDURE : INITIAL FITTING WAS DONE USING COOT AND REMARK 3 REFINEMENT WAS CONDUCTED WITH PHENIX. REMARK 3 REMARK 3 EM IMAGE RECONSTRUCTION STATISTICS REMARK 3 NOMINAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 ACTUAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 EFFECTIVE RESOLUTION (ANGSTROMS) : 2.830 REMARK 3 NUMBER OF PARTICLES : 211355 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING AND AMPLITUDE REMARK 3 CORRECTION REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 28IZ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 18-FEB-26. REMARK 100 THE DEPOSITION ID IS D_1292148891. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : SINGLE PARTICLE REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : PARTICLE REMARK 245 PARTICLE TYPE : POINT REMARK 245 NAME OF SAMPLE : K2P9.1 L122V HOMODIMER REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 4.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : GRID BLOTTED FOR APPROXIMATELY REMARK 245 4 SECONDS REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 7.50 REMARK 245 SAMPLE DETAILS : PROTEIN GENERATED BY REMOVAL OF REMARK 245 THE 10XHIS AND FLAG PURIFICATION TAGS WITH 3C PROTEASE CLEAVAGE REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 13035 REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : TFS KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 BIOQUANTUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1200.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2700.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : NULL REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 4390.00 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : 105000 REMARK 245 CALIBRATED MAGNIFICATION : NULL REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 300 REMARK 245 IMAGING DETAILS : NULL REMARK 247 REMARK 247 ELECTRON MICROSCOPY REMARK 247 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM ELECTRON REMARK 247 MICROSCOPY DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE REMARK 247 THAT CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES REMARK 247 ON THESE RECORDS ARE MEANINGLESS EXCEPT FOR THE CALCULATION REMARK 247 OF THE STRUCTURE FACTORS. 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 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 GLU A 261 REMARK 465 LEU A 262 REMARK 465 GLU A 263 REMARK 465 VAL A 264 REMARK 465 LEU A 265 REMARK 465 PHE A 266 REMARK 465 GLN A 267 REMARK 465 GLU B 261 REMARK 465 LEU B 262 REMARK 465 GLU B 263 REMARK 465 VAL B 264 REMARK 465 LEU B 265 REMARK 465 PHE B 266 REMARK 465 GLN B 267 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 MET A 1 CG SD CE REMARK 470 MET A 35 CG SD CE REMARK 470 ARG A 36 CG CD NE CZ NH1 NH2 REMARK 470 SER A 55 OG REMARK 470 GLU A 57 CG CD OE1 OE2 REMARK 470 GLU A 63 CG CD OE1 OE2 REMARK 470 GLU A 70 CG CD OE1 OE2 REMARK 470 ARG A 73 CG CD NE CZ NH1 NH2 REMARK 470 GLN A 126 CG CD OE1 NE2 REMARK 470 LEU A 139 CG CD1 CD2 REMARK 470 ARG A 142 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 145 CG CD CE NZ REMARK 470 MET A 149 CG SD CE REMARK 470 ARG A 150 CG CD NE CZ NH1 NH2 REMARK 470 ASN A 151 CG OD1 ND2 REMARK 470 ASP A 153 CG OD1 OD2 REMARK 470 GLU A 157 CG CD OE1 OE2 REMARK 470 GLU A 183 CG CD OE1 OE2 REMARK 470 LYS A 211 CG CD CE NZ REMARK 470 GLU A 252 CG CD OE1 OE2 REMARK 470 ASP A 253 CG OD1 OD2 REMARK 470 ARG A 255 CG CD NE CZ NH1 NH2 REMARK 470 ASP A 257 CG OD1 OD2 REMARK 470 GLU A 259 CG CD OE1 OE2 REMARK 470 MET B 1 CG SD CE REMARK 470 MET B 35 CG SD CE REMARK 470 ARG B 36 CG CD NE CZ NH1 NH2 REMARK 470 SER B 55 OG REMARK 470 GLU B 57 CG CD OE1 OE2 REMARK 470 GLU B 63 CG CD OE1 OE2 REMARK 470 GLU B 70 CG CD OE1 OE2 REMARK 470 ARG B 73 CG CD NE CZ NH1 NH2 REMARK 470 GLN B 126 CG CD OE1 NE2 REMARK 470 LEU B 139 CG CD1 CD2 REMARK 470 ARG B 142 CG CD NE CZ NH1 NH2 REMARK 470 LYS B 145 CG CD CE NZ REMARK 470 MET B 149 CG SD CE REMARK 470 ARG B 150 CG CD NE CZ NH1 NH2 REMARK 470 ASN B 151 CG OD1 ND2 REMARK 470 ASP B 153 CG OD1 OD2 REMARK 470 GLU B 157 CG CD OE1 OE2 REMARK 470 GLU B 183 CG CD OE1 OE2 REMARK 470 LYS B 211 CG CD CE NZ REMARK 470 GLU B 252 CG CD OE1 OE2 REMARK 470 ASP B 253 CG OD1 OD2 REMARK 470 ARG B 255 CG CD NE CZ NH1 NH2 REMARK 470 ASP B 257 CG OD1 OD2 REMARK 470 GLU B 259 CG CD OE1 OE2 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 ILE A 200 -62.07 -90.98 REMARK 500 ILE B 200 -62.06 -90.90 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 301 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 93 O REMARK 620 2 ILE A 94 O 76.3 REMARK 620 3 THR A 199 O 66.4 102.4 REMARK 620 4 ILE A 200 O 121.8 66.5 79.5 REMARK 620 5 THR B 93 O 102.2 163.2 62.5 101.7 REMARK 620 6 ILE B 94 O 163.2 109.9 124.9 74.5 76.3 REMARK 620 7 THR B 199 O 62.5 124.9 93.4 168.1 66.4 102.4 REMARK 620 8 ILE B 200 O 101.7 74.5 168.1 109.0 121.8 66.5 79.5 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 302 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 93 O REMARK 620 2 THR A 93 OG1 62.0 REMARK 620 3 THR A 199 O 69.9 110.1 REMARK 620 4 THR A 199 OG1 96.5 82.3 55.8 REMARK 620 5 THR B 93 O 94.3 154.5 65.9 111.5 REMARK 620 6 THR B 93 OG1 154.5 142.8 90.4 84.7 62.1 REMARK 620 7 THR B 199 O 65.8 90.4 112.8 162.2 69.9 110.3 REMARK 620 8 THR B 199 OG1 111.5 84.7 162.4 138.6 96.6 82.4 55.9 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 304 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ILE A 94 O REMARK 620 2 GLY A 95 O 70.1 REMARK 620 3 ILE A 200 O 67.8 122.6 REMARK 620 4 GLY A 201 O 89.4 72.3 70.0 REMARK 620 5 ILE B 94 O 113.6 159.0 76.0 127.1 REMARK 620 6 GLY B 95 O 159.1 114.3 94.5 73.5 70.2 REMARK 620 7 ILE B 200 O 75.9 94.4 110.9 163.1 67.8 122.5 REMARK 620 8 GLY B 201 O 127.0 73.5 163.1 114.4 89.4 72.3 69.9 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 303 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLY A 95 O REMARK 620 2 TYR A 96 O 72.6 REMARK 620 3 GLY A 201 O 63.9 94.4 REMARK 620 4 PHE A 202 O 124.6 79.1 72.3 REMARK 620 5 GLY B 95 O 96.2 159.1 64.7 94.0 REMARK 620 6 TYR B 96 O 158.0 124.0 123.0 75.7 72.1 REMARK 620 7 GLY B 201 O 64.6 123.0 98.5 157.3 63.5 93.5 REMARK 620 8 PHE B 202 O 93.9 75.8 157.7 123.8 123.4 78.4 71.7 REMARK 620 N 1 2 3 4 5 6 7 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-56538 RELATED DB: EMDB REMARK 900 STRUCTURE OF THE HUMAN TWO PORE DOMAIN POTASSIUM ION CHANNEL TASK-3 REMARK 900 L122V MUTANT (K2P9.1) DBREF 28IZ A 1 259 UNP Q9NPC2 KCNK9_HUMAN 1 259 DBREF 28IZ B 1 259 UNP Q9NPC2 KCNK9_HUMAN 1 259 SEQADV 28IZ VAL A 122 UNP Q9NPC2 LEU 122 ENGINEERED MUTATION SEQADV 28IZ ALA A 260 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ GLU A 261 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ LEU A 262 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ GLU A 263 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ VAL A 264 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ LEU A 265 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ PHE A 266 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ GLN A 267 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ VAL B 122 UNP Q9NPC2 LEU 122 ENGINEERED MUTATION SEQADV 28IZ ALA B 260 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ GLU B 261 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ LEU B 262 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ GLU B 263 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ VAL B 264 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ LEU B 265 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ PHE B 266 UNP Q9NPC2 EXPRESSION TAG SEQADV 28IZ GLN B 267 UNP Q9NPC2 EXPRESSION TAG SEQRES 1 A 267 MET LYS ARG GLN ASN VAL ARG THR LEU SER LEU ILE VAL SEQRES 2 A 267 CYS THR PHE THR TYR LEU LEU VAL GLY ALA ALA VAL PHE SEQRES 3 A 267 ASP ALA LEU GLU SER ASP HIS GLU MET ARG GLU GLU GLU SEQRES 4 A 267 LYS LEU LYS ALA GLU GLU ILE ARG ILE LYS GLY LYS TYR SEQRES 5 A 267 ASN ILE SER SER GLU ASP TYR ARG GLN LEU GLU LEU VAL SEQRES 6 A 267 ILE LEU GLN SER GLU PRO HIS ARG ALA GLY VAL GLN TRP SEQRES 7 A 267 LYS PHE ALA GLY SER PHE TYR PHE ALA ILE THR VAL ILE SEQRES 8 A 267 THR THR ILE GLY TYR GLY HIS ALA ALA PRO GLY THR ASP SEQRES 9 A 267 ALA GLY LYS ALA PHE CYS MET PHE TYR ALA VAL LEU GLY SEQRES 10 A 267 ILE PRO LEU THR VAL VAL MET PHE GLN SER LEU GLY GLU SEQRES 11 A 267 ARG MET ASN THR PHE VAL ARG TYR LEU LEU LYS ARG ILE SEQRES 12 A 267 LYS LYS CYS CYS GLY MET ARG ASN THR ASP VAL SER MET SEQRES 13 A 267 GLU ASN MET VAL THR VAL GLY PHE PHE SER CYS MET GLY SEQRES 14 A 267 THR LEU CYS ILE GLY ALA ALA ALA PHE SER GLN CYS GLU SEQRES 15 A 267 GLU TRP SER PHE PHE HIS ALA TYR TYR TYR CYS PHE ILE SEQRES 16 A 267 THR LEU THR THR ILE GLY PHE GLY ASP TYR VAL ALA LEU SEQRES 17 A 267 GLN THR LYS GLY ALA LEU GLN LYS LYS PRO LEU TYR VAL SEQRES 18 A 267 ALA PHE SER PHE MET TYR ILE LEU VAL GLY LEU THR VAL SEQRES 19 A 267 ILE GLY ALA PHE LEU ASN LEU VAL VAL LEU ARG PHE LEU SEQRES 20 A 267 THR MET ASN SER GLU ASP GLU ARG ARG ASP ALA GLU ALA SEQRES 21 A 267 GLU LEU GLU VAL LEU PHE GLN SEQRES 1 B 267 MET LYS ARG GLN ASN VAL ARG THR LEU SER LEU ILE VAL SEQRES 2 B 267 CYS THR PHE THR TYR LEU LEU VAL GLY ALA ALA VAL PHE SEQRES 3 B 267 ASP ALA LEU GLU SER ASP HIS GLU MET ARG GLU GLU GLU SEQRES 4 B 267 LYS LEU LYS ALA GLU GLU ILE ARG ILE LYS GLY LYS TYR SEQRES 5 B 267 ASN ILE SER SER GLU ASP TYR ARG GLN LEU GLU LEU VAL SEQRES 6 B 267 ILE LEU GLN SER GLU PRO HIS ARG ALA GLY VAL GLN TRP SEQRES 7 B 267 LYS PHE ALA GLY SER PHE TYR PHE ALA ILE THR VAL ILE SEQRES 8 B 267 THR THR ILE GLY TYR GLY HIS ALA ALA PRO GLY THR ASP SEQRES 9 B 267 ALA GLY LYS ALA PHE CYS MET PHE TYR ALA VAL LEU GLY SEQRES 10 B 267 ILE PRO LEU THR VAL VAL MET PHE GLN SER LEU GLY GLU SEQRES 11 B 267 ARG MET ASN THR PHE VAL ARG TYR LEU LEU LYS ARG ILE SEQRES 12 B 267 LYS LYS CYS CYS GLY MET ARG ASN THR ASP VAL SER MET SEQRES 13 B 267 GLU ASN MET VAL THR VAL GLY PHE PHE SER CYS MET GLY SEQRES 14 B 267 THR LEU CYS ILE GLY ALA ALA ALA PHE SER GLN CYS GLU SEQRES 15 B 267 GLU TRP SER PHE PHE HIS ALA TYR TYR TYR CYS PHE ILE SEQRES 16 B 267 THR LEU THR THR ILE GLY PHE GLY ASP TYR VAL ALA LEU SEQRES 17 B 267 GLN THR LYS GLY ALA LEU GLN LYS LYS PRO LEU TYR VAL SEQRES 18 B 267 ALA PHE SER PHE MET TYR ILE LEU VAL GLY LEU THR VAL SEQRES 19 B 267 ILE GLY ALA PHE LEU ASN LEU VAL VAL LEU ARG PHE LEU SEQRES 20 B 267 THR MET ASN SER GLU ASP GLU ARG ARG ASP ALA GLU ALA SEQRES 21 B 267 GLU LEU GLU VAL LEU PHE GLN HET K A 301 1 HET K A 302 1 HET K A 303 1 HET K A 304 1 HET Y01 A 305 35 HET Y01 A 306 35 HET Y01 A 307 35 HET Y01 B 301 35 HET Y01 B 302 35 HET Y01 B 303 35 HETNAM K POTASSIUM ION HETNAM Y01 CHOLESTEROL HEMISUCCINATE FORMUL 3 K 4(K 1+) FORMUL 7 Y01 6(C31 H50 O4) HELIX 1 AA1 LYS A 2 TYR A 52 1 51 HELIX 2 AA2 SER A 55 ALA A 74 1 20 HELIX 3 AA3 LYS A 79 THR A 92 1 14 HELIX 4 AA4 THR A 103 CYS A 147 1 45 HELIX 5 AA5 SER A 155 GLU A 183 1 29 HELIX 6 AA6 SER A 185 THR A 198 1 14 HELIX 7 AA7 GLY A 212 LYS A 217 1 6 HELIX 8 AA8 LYS A 217 VAL A 243 1 27 HELIX 9 AA9 LEU A 244 LEU A 247 5 4 HELIX 10 AB1 THR A 248 ALA A 260 1 13 HELIX 11 AB2 LYS B 2 TYR B 52 1 51 HELIX 12 AB3 SER B 55 ALA B 74 1 20 HELIX 13 AB4 LYS B 79 THR B 92 1 14 HELIX 14 AB5 THR B 103 CYS B 147 1 45 HELIX 15 AB6 SER B 155 GLU B 183 1 29 HELIX 16 AB7 SER B 185 THR B 198 1 14 HELIX 17 AB8 GLY B 212 LYS B 217 1 6 HELIX 18 AB9 LYS B 217 VAL B 243 1 27 HELIX 19 AC1 LEU B 244 LEU B 247 5 4 HELIX 20 AC2 THR B 248 ALA B 260 1 13 LINK O THR A 93 K K A 301 1555 1555 2.70 LINK O THR A 93 K K A 302 1555 1555 2.87 LINK OG1 THR A 93 K K A 302 1555 1555 2.74 LINK O ILE A 94 K K A 301 1555 1555 2.75 LINK O ILE A 94 K K A 304 1555 1555 2.69 LINK O GLY A 95 K K A 303 1555 1555 2.97 LINK O GLY A 95 K K A 304 1555 1555 2.64 LINK O TYR A 96 K K A 303 1555 1555 2.77 LINK O THR A 199 K K A 301 1555 1555 3.12 LINK O THR A 199 K K A 302 1555 1555 2.73 LINK OG1 THR A 199 K K A 302 1555 1555 3.37 LINK O ILE A 200 K K A 301 1555 1555 2.67 LINK O ILE A 200 K K A 304 1555 1555 2.64 LINK O GLY A 201 K K A 303 1555 1555 2.99 LINK O GLY A 201 K K A 304 1555 1555 2.70 LINK O PHE A 202 K K A 303 1555 1555 2.74 LINK K K A 301 O THR B 93 1555 1555 2.70 LINK K K A 301 O ILE B 94 1555 1555 2.75 LINK K K A 301 O THR B 199 1555 1555 3.12 LINK K K A 301 O ILE B 200 1555 1555 2.67 LINK K K A 302 O THR B 93 1555 1555 2.87 LINK K K A 302 OG1 THR B 93 1555 1555 2.74 LINK K K A 302 O THR B 199 1555 1555 2.73 LINK K K A 302 OG1 THR B 199 1555 1555 3.36 LINK K K A 303 O GLY B 95 1555 1555 2.98 LINK K K A 303 O TYR B 96 1555 1555 2.79 LINK K K A 303 O GLY B 201 1555 1555 3.01 LINK K K A 303 O PHE B 202 1555 1555 2.76 LINK K K A 304 O ILE B 94 1555 1555 2.69 LINK K K A 304 O GLY B 95 1555 1555 2.64 LINK K K A 304 O ILE B 200 1555 1555 2.64 LINK K K A 304 O GLY B 201 1555 1555 2.70 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 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 CONECT 724 3939 3940 CONECT 726 3940 CONECT 731 3939 3942 CONECT 739 3941 3942 CONECT 743 3941 CONECT 1509 3939 3940 CONECT 1511 3940 CONECT 1516 3939 3942 CONECT 1524 3941 3942 CONECT 1528 3941 CONECT 2693 3939 3940 CONECT 2695 3940 CONECT 2700 3939 3942 CONECT 2708 3941 3942 CONECT 2712 3941 CONECT 3478 3939 3940 CONECT 3480 3940 CONECT 3485 3939 3942 CONECT 3493 3941 3942 CONECT 3497 3941 CONECT 3939 724 731 1509 1516 CONECT 3939 2693 2700 3478 3485 CONECT 3940 724 726 1509 1511 CONECT 3940 2693 2695 3478 3480 CONECT 3941 739 743 1524 1528 CONECT 3941 2708 2712 3493 3497 CONECT 3942 731 739 1516 1524 CONECT 3942 2700 2708 3485 3493 CONECT 3943 3944 CONECT 3944 3943 3945 3946 CONECT 3945 3944 CONECT 3946 3944 3947 CONECT 3947 3946 3948 CONECT 3948 3947 3949 CONECT 3949 3948 3950 3951 CONECT 3950 3949 CONECT 3951 3949 3952 3955 CONECT 3952 3951 3953 CONECT 3953 3952 3954 CONECT 3954 3953 3955 3960 CONECT 3955 3951 3954 3956 3957 CONECT 3956 3955 CONECT 3957 3955 3958 CONECT 3958 3957 3959 CONECT 3959 3958 3960 3965 CONECT 3960 3954 3959 3961 CONECT 3961 3960 3962 CONECT 3962 3961 3963 CONECT 3963 3962 3964 3965 CONECT 3964 3963 3969 CONECT 3965 3959 3963 3966 3967 CONECT 3966 3965 CONECT 3967 3965 3968 CONECT 3968 3967 3969 CONECT 3969 3964 3968 3970 CONECT 3970 3969 3971 CONECT 3971 3970 3972 3973 CONECT 3972 3971 CONECT 3973 3971 3974 CONECT 3974 3973 3975 CONECT 3975 3974 3976 3977 CONECT 3976 3975 CONECT 3977 3975 CONECT 3978 3979 CONECT 3979 3978 3980 3981 CONECT 3980 3979 CONECT 3981 3979 3982 CONECT 3982 3981 3983 CONECT 3983 3982 3984 CONECT 3984 3983 3985 3986 CONECT 3985 3984 CONECT 3986 3984 3987 3990 CONECT 3987 3986 3988 CONECT 3988 3987 3989 CONECT 3989 3988 3990 3995 CONECT 3990 3986 3989 3991 3992 CONECT 3991 3990 CONECT 3992 3990 3993 CONECT 3993 3992 3994 CONECT 3994 3993 3995 4000 CONECT 3995 3989 3994 3996 CONECT 3996 3995 3997 CONECT 3997 3996 3998 CONECT 3998 3997 3999 4000 CONECT 3999 3998 4004 CONECT 4000 3994 3998 4001 4002 CONECT 4001 4000 CONECT 4002 4000 4003 CONECT 4003 4002 4004 CONECT 4004 3999 4003 4005 CONECT 4005 4004 4006 CONECT 4006 4005 4007 4008 CONECT 4007 4006 CONECT 4008 4006 4009 CONECT 4009 4008 4010 CONECT 4010 4009 4011 4012 CONECT 4011 4010 CONECT 4012 4010 CONECT 4013 4014 CONECT 4014 4013 4015 4016 CONECT 4015 4014 CONECT 4016 4014 4017 CONECT 4017 4016 4018 CONECT 4018 4017 4019 CONECT 4019 4018 4020 4021 CONECT 4020 4019 CONECT 4021 4019 4022 4025 CONECT 4022 4021 4023 CONECT 4023 4022 4024 CONECT 4024 4023 4025 4030 CONECT 4025 4021 4024 4026 4027 CONECT 4026 4025 CONECT 4027 4025 4028 CONECT 4028 4027 4029 CONECT 4029 4028 4030 4035 CONECT 4030 4024 4029 4031 CONECT 4031 4030 4032 CONECT 4032 4031 4033 CONECT 4033 4032 4034 4035 CONECT 4034 4033 4039 CONECT 4035 4029 4033 4036 4037 CONECT 4036 4035 CONECT 4037 4035 4038 CONECT 4038 4037 4039 CONECT 4039 4034 4038 4040 CONECT 4040 4039 4041 CONECT 4041 4040 4042 4043 CONECT 4042 4041 CONECT 4043 4041 4044 CONECT 4044 4043 4045 CONECT 4045 4044 4046 4047 CONECT 4046 4045 CONECT 4047 4045 CONECT 4048 4049 CONECT 4049 4048 4050 4051 CONECT 4050 4049 CONECT 4051 4049 4052 CONECT 4052 4051 4053 CONECT 4053 4052 4054 CONECT 4054 4053 4055 4056 CONECT 4055 4054 CONECT 4056 4054 4057 4060 CONECT 4057 4056 4058 CONECT 4058 4057 4059 CONECT 4059 4058 4060 4065 CONECT 4060 4056 4059 4061 4062 CONECT 4061 4060 CONECT 4062 4060 4063 CONECT 4063 4062 4064 CONECT 4064 4063 4065 4070 CONECT 4065 4059 4064 4066 CONECT 4066 4065 4067 CONECT 4067 4066 4068 CONECT 4068 4067 4069 4070 CONECT 4069 4068 4074 CONECT 4070 4064 4068 4071 4072 CONECT 4071 4070 CONECT 4072 4070 4073 CONECT 4073 4072 4074 CONECT 4074 4069 4073 4075 CONECT 4075 4074 4076 CONECT 4076 4075 4077 4078 CONECT 4077 4076 CONECT 4078 4076 4079 CONECT 4079 4078 4080 CONECT 4080 4079 4081 4082 CONECT 4081 4080 CONECT 4082 4080 CONECT 4083 4084 CONECT 4084 4083 4085 4086 CONECT 4085 4084 CONECT 4086 4084 4087 CONECT 4087 4086 4088 CONECT 4088 4087 4089 CONECT 4089 4088 4090 4091 CONECT 4090 4089 CONECT 4091 4089 4092 4095 CONECT 4092 4091 4093 CONECT 4093 4092 4094 CONECT 4094 4093 4095 4100 CONECT 4095 4091 4094 4096 4097 CONECT 4096 4095 CONECT 4097 4095 4098 CONECT 4098 4097 4099 CONECT 4099 4098 4100 4105 CONECT 4100 4094 4099 4101 CONECT 4101 4100 4102 CONECT 4102 4101 4103 CONECT 4103 4102 4104 4105 CONECT 4104 4103 4109 CONECT 4105 4099 4103 4106 4107 CONECT 4106 4105 CONECT 4107 4105 4108 CONECT 4108 4107 4109 CONECT 4109 4104 4108 4110 CONECT 4110 4109 4111 CONECT 4111 4110 4112 4113 CONECT 4112 4111 CONECT 4113 4111 4114 CONECT 4114 4113 4115 CONECT 4115 4114 4116 4117 CONECT 4116 4115 CONECT 4117 4115 CONECT 4118 4119 CONECT 4119 4118 4120 4121 CONECT 4120 4119 CONECT 4121 4119 4122 CONECT 4122 4121 4123 CONECT 4123 4122 4124 CONECT 4124 4123 4125 4126 CONECT 4125 4124 CONECT 4126 4124 4127 4130 CONECT 4127 4126 4128 CONECT 4128 4127 4129 CONECT 4129 4128 4130 4135 CONECT 4130 4126 4129 4131 4132 CONECT 4131 4130 CONECT 4132 4130 4133 CONECT 4133 4132 4134 CONECT 4134 4133 4135 4140 CONECT 4135 4129 4134 4136 CONECT 4136 4135 4137 CONECT 4137 4136 4138 CONECT 4138 4137 4139 4140 CONECT 4139 4138 4144 CONECT 4140 4134 4138 4141 4142 CONECT 4141 4140 CONECT 4142 4140 4143 CONECT 4143 4142 4144 CONECT 4144 4139 4143 4145 CONECT 4145 4144 4146 CONECT 4146 4145 4147 4148 CONECT 4147 4146 CONECT 4148 4146 4149 CONECT 4149 4148 4150 CONECT 4150 4149 4151 4152 CONECT 4151 4150 CONECT 4152 4150 MASTER 256 0 10 20 0 0 0 6 4150 2 238 42 END