HEADER TRANSPORT PROTEIN 20-APR-20 6WLV TITLE TASK2 IN MSP1D1 LIPID NANODISC AT PH 6.5 COMPND MOL_ID: 1; COMPND 2 MOLECULE: POTASSIUM CHANNEL TASK2; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: POTASSIUM CHANNEL,SUBFAMILY K,MEMBER 5,TASK2 POTASSIUM COMPND 5 CHANNEL; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MUS MUSCULUS; SOURCE 3 ORGANISM_COMMON: MOUSE; SOURCE 4 ORGANISM_TAXID: 10090; SOURCE 5 GENE: KCNK5; SOURCE 6 EXPRESSION_SYSTEM: KOMAGATAELLA PASTORIS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 4922 KEYWDS POTASSIUM ION CHANNEL, K2P CHANNEL, TRANSPORT PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR B.LI,S.G.BROHAWN REVDAT 3 28-OCT-20 6WLV 1 JRNL REVDAT 2 14-OCT-20 6WLV 1 JRNL LINK REVDAT 1 15-JUL-20 6WLV 0 JRNL AUTH B.LI,R.A.RIETMEIJER,S.G.BROHAWN JRNL TITL STRUCTURAL BASIS FOR PH GATING OF THE TWO-PORE DOMAIN K + JRNL TITL 2 CHANNEL TASK2. JRNL REF NATURE V. 586 457 2020 JRNL REFN ESSN 1476-4687 JRNL PMID 32999458 JRNL DOI 10.1038/S41586-020-2770-2 REMARK 2 REMARK 2 RESOLUTION. 3.45 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : RELION, SERIALEM, CTFFIND, COOT, REMARK 3 RELION, RELION, RELION, RELION, PHENIX REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : OTHER REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 151.610 REMARK 3 REMARK 3 FITTING PROCEDURE : NULL 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) : 3.450 REMARK 3 NUMBER OF PARTICLES : 255808 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 6WLV COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 21-APR-20. REMARK 100 THE DEPOSITION ID IS D_1000248584. 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 : TASK2 IN MSP1D1 LIPID NANODISC REMARK 245 AT PH 6.5 REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 1.20 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : INCUBATE 5 SECONDS, BLOT 3S REMARK 245 SECONDS, BLOT FORCE 1 REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 6.50 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 2683 REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : FEI TALOS ARCTICA REMARK 245 DETECTOR TYPE : GATAN K3 (6K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 800.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2000.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : 2.70 REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 0.99 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : NULL REMARK 245 CALIBRATED MAGNIFICATION : NULL REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 200 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 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 MET A 1 REMARK 465 VAL A 2 REMARK 465 ASP A 3 REMARK 465 ARG A 4 REMARK 465 ARG A 261 REMARK 465 ARG A 262 REMARK 465 ARG A 263 REMARK 465 LYS A 264 REMARK 465 GLU A 265 REMARK 465 SER A 266 REMARK 465 PHE A 267 REMARK 465 GLU A 268 REMARK 465 SER A 269 REMARK 465 SER A 270 REMARK 465 PRO A 271 REMARK 465 HIS A 272 REMARK 465 SER A 273 REMARK 465 ARG A 274 REMARK 465 LYS A 275 REMARK 465 ALA A 276 REMARK 465 LEU A 277 REMARK 465 GLN A 278 REMARK 465 MET A 279 REMARK 465 ALA A 280 REMARK 465 GLY A 281 REMARK 465 SER A 282 REMARK 465 THR A 283 REMARK 465 ALA A 284 REMARK 465 SER A 285 REMARK 465 LYS A 286 REMARK 465 ASP A 287 REMARK 465 VAL A 288 REMARK 465 ASN A 289 REMARK 465 ILE A 290 REMARK 465 PHE A 291 REMARK 465 SER A 292 REMARK 465 PHE A 293 REMARK 465 LEU A 294 REMARK 465 SER A 295 REMARK 465 LYS A 296 REMARK 465 LYS A 297 REMARK 465 GLU A 298 REMARK 465 GLU A 299 REMARK 465 THR A 300 REMARK 465 TYR A 301 REMARK 465 ASN A 302 REMARK 465 ASP A 303 REMARK 465 LEU A 304 REMARK 465 ILE A 305 REMARK 465 LYS A 306 REMARK 465 GLN A 307 REMARK 465 ILE A 308 REMARK 465 GLY A 309 REMARK 465 LYS A 310 REMARK 465 LYS A 311 REMARK 465 ALA A 312 REMARK 465 MET A 313 REMARK 465 LYS A 314 REMARK 465 THR A 315 REMARK 465 SER A 316 REMARK 465 GLY A 317 REMARK 465 GLY A 318 REMARK 465 GLY A 319 REMARK 465 GLU A 320 REMARK 465 ARG A 321 REMARK 465 VAL A 322 REMARK 465 PRO A 323 REMARK 465 GLY A 324 REMARK 465 PRO A 325 REMARK 465 GLY A 326 REMARK 465 HIS A 327 REMARK 465 GLY A 328 REMARK 465 LEU A 329 REMARK 465 GLY A 330 REMARK 465 PRO A 331 REMARK 465 GLN A 332 REMARK 465 GLY A 333 REMARK 465 ASP A 334 REMARK 465 ARG A 335 REMARK 465 SER A 336 REMARK 465 ASN A 337 REMARK 465 SER A 338 REMARK 465 LEU A 339 REMARK 465 GLU A 340 REMARK 465 VAL A 341 REMARK 465 LEU A 342 REMARK 465 PHE A 343 REMARK 465 MET B 1 REMARK 465 VAL B 2 REMARK 465 ASP B 3 REMARK 465 ARG B 4 REMARK 465 ARG B 261 REMARK 465 ARG B 262 REMARK 465 ARG B 263 REMARK 465 LYS B 264 REMARK 465 GLU B 265 REMARK 465 SER B 266 REMARK 465 PHE B 267 REMARK 465 GLU B 268 REMARK 465 SER B 269 REMARK 465 SER B 270 REMARK 465 PRO B 271 REMARK 465 HIS B 272 REMARK 465 SER B 273 REMARK 465 ARG B 274 REMARK 465 LYS B 275 REMARK 465 ALA B 276 REMARK 465 LEU B 277 REMARK 465 GLN B 278 REMARK 465 MET B 279 REMARK 465 ALA B 280 REMARK 465 GLY B 281 REMARK 465 SER B 282 REMARK 465 THR B 283 REMARK 465 ALA B 284 REMARK 465 SER B 285 REMARK 465 LYS B 286 REMARK 465 ASP B 287 REMARK 465 VAL B 288 REMARK 465 ASN B 289 REMARK 465 ILE B 290 REMARK 465 PHE B 291 REMARK 465 SER B 292 REMARK 465 PHE B 293 REMARK 465 LEU B 294 REMARK 465 SER B 295 REMARK 465 LYS B 296 REMARK 465 LYS B 297 REMARK 465 GLU B 298 REMARK 465 GLU B 299 REMARK 465 THR B 300 REMARK 465 TYR B 301 REMARK 465 ASN B 302 REMARK 465 ASP B 303 REMARK 465 LEU B 304 REMARK 465 ILE B 305 REMARK 465 LYS B 306 REMARK 465 GLN B 307 REMARK 465 ILE B 308 REMARK 465 GLY B 309 REMARK 465 LYS B 310 REMARK 465 LYS B 311 REMARK 465 ALA B 312 REMARK 465 MET B 313 REMARK 465 LYS B 314 REMARK 465 THR B 315 REMARK 465 SER B 316 REMARK 465 GLY B 317 REMARK 465 GLY B 318 REMARK 465 GLY B 319 REMARK 465 GLU B 320 REMARK 465 ARG B 321 REMARK 465 VAL B 322 REMARK 465 PRO B 323 REMARK 465 GLY B 324 REMARK 465 PRO B 325 REMARK 465 GLY B 326 REMARK 465 HIS B 327 REMARK 465 GLY B 328 REMARK 465 LEU B 329 REMARK 465 GLY B 330 REMARK 465 PRO B 331 REMARK 465 GLN B 332 REMARK 465 GLY B 333 REMARK 465 ASP B 334 REMARK 465 ARG B 335 REMARK 465 SER B 336 REMARK 465 ASN B 337 REMARK 465 SER B 338 REMARK 465 LEU B 339 REMARK 465 GLU B 340 REMARK 465 VAL B 341 REMARK 465 LEU B 342 REMARK 465 PHE B 343 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 ASN A 84 -167.09 -78.76 REMARK 500 THR A 98 12.93 57.31 REMARK 500 TRP A 244 35.06 -97.62 REMARK 500 SER B 216 53.75 -93.66 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 98 O REMARK 620 2 ILE A 99 O 69.8 REMARK 620 3 THR A 203 O 70.3 95.6 REMARK 620 4 ILE A 204 O 127.2 72.4 78.5 REMARK 620 5 THR B 98 O 103.1 161.0 65.4 100.9 REMARK 620 6 ILE B 99 O 161.3 116.1 124.4 70.4 76.5 REMARK 620 7 THR B 203 O 68.5 125.0 102.2 162.0 64.1 95.3 REMARK 620 8 ILE B 204 O 93.8 72.2 162.9 108.0 126.6 72.5 76.6 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 403 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 98 O REMARK 620 2 THR A 98 OG1 57.7 REMARK 620 3 THR A 203 O 70.2 101.9 REMARK 620 4 THR A 203 OG1 101.3 79.4 57.8 REMARK 620 5 THR B 98 O 102.5 160.0 65.0 103.5 REMARK 620 6 THR B 98 OG1 161.7 140.6 99.9 85.1 59.2 REMARK 620 7 THR B 203 O 67.8 107.4 100.8 158.6 63.2 100.3 REMARK 620 8 THR B 203 OG1 109.0 97.3 155.7 141.8 92.4 73.5 58.8 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 ILE A 99 O REMARK 620 2 GLY A 100 O 62.8 REMARK 620 3 ILE A 204 O 76.1 117.3 REMARK 620 4 GLY A 205 O 85.8 67.2 64.4 REMARK 620 5 ILE B 99 O 123.7 164.1 78.5 125.4 REMARK 620 6 GLY B 100 O 158.4 119.7 84.9 76.8 60.5 REMARK 620 7 ILE B 204 O 75.8 87.4 126.7 153.6 80.9 124.7 REMARK 620 8 GLY B 205 O 126.1 77.2 157.8 111.4 88.3 73.1 67.4 REMARK 620 N 1 2 3 4 5 6 7 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 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 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-21843 RELATED DB: EMDB REMARK 900 TASK2 IN MSP1D1 LIPID NANODISC AT PH 6.5 DBREF 6WLV A 1 335 UNP Q9JK62 Q9JK62_MOUSE 1 335 DBREF 6WLV B 1 335 UNP Q9JK62 Q9JK62_MOUSE 1 335 SEQADV 6WLV SER A 336 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV ASN A 337 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV SER A 338 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV LEU A 339 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV GLU A 340 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV VAL A 341 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV LEU A 342 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV PHE A 343 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV SER B 336 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV ASN B 337 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV SER B 338 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV LEU B 339 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV GLU B 340 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV VAL B 341 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV LEU B 342 UNP Q9JK62 EXPRESSION TAG SEQADV 6WLV PHE B 343 UNP Q9JK62 EXPRESSION TAG SEQRES 1 A 343 MET VAL ASP ARG GLY PRO LEU LEU THR SER ALA ILE ILE SEQRES 2 A 343 PHE TYR LEU ALA ILE GLY ALA ALA ILE PHE GLU VAL LEU SEQRES 3 A 343 GLU GLU PRO HIS TRP LYS GLU ALA LYS LYS ASN TYR TYR SEQRES 4 A 343 THR GLN LYS LEU HIS LEU LEU LYS GLU PHE PRO CYS LEU SEQRES 5 A 343 SER GLN GLU GLY LEU ASP LYS ILE LEU GLN VAL VAL SER SEQRES 6 A 343 ASP ALA ALA ASP GLN GLY VAL ALA ILE THR GLY ASN GLN SEQRES 7 A 343 THR PHE ASN ASN TRP ASN TRP PRO ASN ALA MET ILE PHE SEQRES 8 A 343 ALA ALA THR VAL ILE THR THR ILE GLY TYR GLY ASN VAL SEQRES 9 A 343 ALA PRO LYS THR PRO ALA GLY ARG LEU PHE CYS VAL PHE SEQRES 10 A 343 TYR GLY LEU PHE GLY VAL PRO LEU CYS LEU THR TRP ILE SEQRES 11 A 343 SER ALA LEU GLY LYS PHE PHE GLY GLY ARG ALA LYS ARG SEQRES 12 A 343 LEU GLY GLN PHE LEU THR ARG ARG GLY VAL SER LEU ARG SEQRES 13 A 343 LYS ALA GLN ILE THR CYS THR ALA ILE PHE ILE VAL TRP SEQRES 14 A 343 GLY VAL LEU VAL HIS LEU VAL ILE PRO PRO PHE VAL PHE SEQRES 15 A 343 MET VAL THR GLU GLU TRP ASN TYR ILE GLU GLY LEU TYR SEQRES 16 A 343 TYR SER PHE ILE THR ILE SER THR ILE GLY PHE GLY ASP SEQRES 17 A 343 PHE VAL ALA GLY VAL ASN PRO SER ALA ASN TYR HIS ALA SEQRES 18 A 343 LEU TYR ARG TYR PHE VAL GLU LEU TRP ILE TYR LEU GLY SEQRES 19 A 343 LEU ALA TRP LEU SER LEU PHE VAL ASN TRP LYS VAL SER SEQRES 20 A 343 MET PHE VAL GLU VAL HIS LYS ALA ILE LYS LYS ARG ARG SEQRES 21 A 343 ARG ARG ARG LYS GLU SER PHE GLU SER SER PRO HIS SER SEQRES 22 A 343 ARG LYS ALA LEU GLN MET ALA GLY SER THR ALA SER LYS SEQRES 23 A 343 ASP VAL ASN ILE PHE SER PHE LEU SER LYS LYS GLU GLU SEQRES 24 A 343 THR TYR ASN ASP LEU ILE LYS GLN ILE GLY LYS LYS ALA SEQRES 25 A 343 MET LYS THR SER GLY GLY GLY GLU ARG VAL PRO GLY PRO SEQRES 26 A 343 GLY HIS GLY LEU GLY PRO GLN GLY ASP ARG SER ASN SER SEQRES 27 A 343 LEU GLU VAL LEU PHE SEQRES 1 B 343 MET VAL ASP ARG GLY PRO LEU LEU THR SER ALA ILE ILE SEQRES 2 B 343 PHE TYR LEU ALA ILE GLY ALA ALA ILE PHE GLU VAL LEU SEQRES 3 B 343 GLU GLU PRO HIS TRP LYS GLU ALA LYS LYS ASN TYR TYR SEQRES 4 B 343 THR GLN LYS LEU HIS LEU LEU LYS GLU PHE PRO CYS LEU SEQRES 5 B 343 SER GLN GLU GLY LEU ASP LYS ILE LEU GLN VAL VAL SER SEQRES 6 B 343 ASP ALA ALA ASP GLN GLY VAL ALA ILE THR GLY ASN GLN SEQRES 7 B 343 THR PHE ASN ASN TRP ASN TRP PRO ASN ALA MET ILE PHE SEQRES 8 B 343 ALA ALA THR VAL ILE THR THR ILE GLY TYR GLY ASN VAL SEQRES 9 B 343 ALA PRO LYS THR PRO ALA GLY ARG LEU PHE CYS VAL PHE SEQRES 10 B 343 TYR GLY LEU PHE GLY VAL PRO LEU CYS LEU THR TRP ILE SEQRES 11 B 343 SER ALA LEU GLY LYS PHE PHE GLY GLY ARG ALA LYS ARG SEQRES 12 B 343 LEU GLY GLN PHE LEU THR ARG ARG GLY VAL SER LEU ARG SEQRES 13 B 343 LYS ALA GLN ILE THR CYS THR ALA ILE PHE ILE VAL TRP SEQRES 14 B 343 GLY VAL LEU VAL HIS LEU VAL ILE PRO PRO PHE VAL PHE SEQRES 15 B 343 MET VAL THR GLU GLU TRP ASN TYR ILE GLU GLY LEU TYR SEQRES 16 B 343 TYR SER PHE ILE THR ILE SER THR ILE GLY PHE GLY ASP SEQRES 17 B 343 PHE VAL ALA GLY VAL ASN PRO SER ALA ASN TYR HIS ALA SEQRES 18 B 343 LEU TYR ARG TYR PHE VAL GLU LEU TRP ILE TYR LEU GLY SEQRES 19 B 343 LEU ALA TRP LEU SER LEU PHE VAL ASN TRP LYS VAL SER SEQRES 20 B 343 MET PHE VAL GLU VAL HIS LYS ALA ILE LYS LYS ARG ARG SEQRES 21 B 343 ARG ARG ARG LYS GLU SER PHE GLU SER SER PRO HIS SER SEQRES 22 B 343 ARG LYS ALA LEU GLN MET ALA GLY SER THR ALA SER LYS SEQRES 23 B 343 ASP VAL ASN ILE PHE SER PHE LEU SER LYS LYS GLU GLU SEQRES 24 B 343 THR TYR ASN ASP LEU ILE LYS GLN ILE GLY LYS LYS ALA SEQRES 25 B 343 MET LYS THR SER GLY GLY GLY GLU ARG VAL PRO GLY PRO SEQRES 26 B 343 GLY HIS GLY LEU GLY PRO GLN GLY ASP ARG SER ASN SER SEQRES 27 B 343 LEU GLU VAL LEU PHE HET K A 401 1 HET K A 402 1 HET K A 403 1 HETNAM K POTASSIUM ION FORMUL 3 K 3(K 1+) HELIX 1 AA1 GLY A 5 GLU A 48 1 44 HELIX 2 AA2 SER A 53 GLN A 70 1 18 HELIX 3 AA3 ASN A 84 ILE A 96 1 13 HELIX 4 AA4 THR A 108 GLY A 152 1 45 HELIX 5 AA5 LYS A 157 VAL A 176 1 20 HELIX 6 AA6 ILE A 177 GLU A 186 1 10 HELIX 7 AA7 ASN A 189 SER A 202 1 14 HELIX 8 AA8 LEU A 222 ASN A 243 1 22 HELIX 9 AA9 TRP A 244 LYS A 254 1 11 HELIX 10 AB1 LYS A 254 ARG A 259 1 6 HELIX 11 AB2 LEU B 7 PHE B 49 1 43 HELIX 12 AB3 SER B 53 ALA B 68 1 16 HELIX 13 AB4 ASP B 69 GLY B 71 5 3 HELIX 14 AB5 ASN B 84 ILE B 96 1 13 HELIX 15 AB6 THR B 108 GLY B 152 1 45 HELIX 16 AB7 LYS B 157 VAL B 176 1 20 HELIX 17 AB8 ILE B 177 GLU B 186 1 10 HELIX 18 AB9 ASN B 189 SER B 202 1 14 HELIX 19 AC1 LEU B 222 TRP B 244 1 23 HELIX 20 AC2 TRP B 244 LYS B 254 1 11 HELIX 21 AC3 ALA B 255 ARG B 260 1 6 SSBOND 1 CYS A 51 CYS B 51 1555 1555 2.03 LINK O THR A 98 K K A 402 1555 1555 2.92 LINK O THR A 98 K K A 403 1555 1555 2.92 LINK OG1 THR A 98 K K A 403 1555 1555 2.92 LINK O ILE A 99 K K A 401 1555 1555 2.83 LINK O ILE A 99 K K A 402 1555 1555 2.80 LINK O GLY A 100 K K A 401 1555 1555 2.58 LINK O THR A 203 K K A 402 1555 1555 2.82 LINK O THR A 203 K K A 403 1555 1555 2.83 LINK OG1 THR A 203 K K A 403 1555 1555 2.86 LINK O ILE A 204 K K A 401 1555 1555 2.57 LINK O ILE A 204 K K A 402 1555 1555 2.84 LINK O GLY A 205 K K A 401 1555 1555 2.82 LINK K K A 401 O ILE B 99 1555 1555 2.66 LINK K K A 401 O GLY B 100 1555 1555 2.63 LINK K K A 401 O ILE B 204 1555 1555 2.55 LINK K K A 401 O GLY B 205 1555 1555 2.71 LINK K K A 402 O THR B 98 1555 1555 2.80 LINK K K A 402 O ILE B 99 1555 1555 2.90 LINK K K A 402 O THR B 203 1555 1555 2.81 LINK K K A 402 O ILE B 204 1555 1555 2.82 LINK K K A 403 O THR B 98 1555 1555 2.83 LINK K K A 403 OG1 THR B 98 1555 1555 2.99 LINK K K A 403 O THR B 203 1555 1555 2.86 LINK K K A 403 OG1 THR B 203 1555 1555 2.86 SITE 1 AC1 9 ILE A 99 GLY A 100 ILE A 204 GLY A 205 SITE 2 AC1 9 K A 402 ILE B 99 GLY B 100 ILE B 204 SITE 3 AC1 9 GLY B 205 SITE 1 AC2 10 THR A 98 ILE A 99 THR A 203 ILE A 204 SITE 2 AC2 10 K A 401 K A 403 THR B 98 ILE B 99 SITE 3 AC2 10 THR B 203 ILE B 204 SITE 1 AC3 5 THR A 98 THR A 203 K A 402 THR B 98 SITE 2 AC3 5 THR B 203 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