HEADER MEMBRANE PROTEIN 25-JUL-24 9G9X TITLE STRUCTURE OF THE HUMAN TWO PORE DOMAIN POTASSIUM ION CHANNEL TASK-1 TITLE 2 (K2P3.1) COMPND MOL_ID: 1; COMPND 2 MOLECULE: POTASSIUM CHANNEL SUBFAMILY K MEMBER 3; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: ACID-SENSITIVE POTASSIUM CHANNEL PROTEIN TASK-1,TWIK-RELATED COMPND 5 ACID-SENSITIVE K(+) CHANNEL 1,TWO PORE POTASSIUM CHANNEL KT3.1,TWO COMPND 6 PORE K(+) CHANNEL KT3.1; COMPND 7 ENGINEERED: YES; COMPND 8 OTHER_DETAILS: K2P3.1 RESIDUES M1 TO E259 WITH A TEV PROTEASE SITE. COMPND 9 FUSED PURIFICATION TAGS WERE CLEAVED PRIOR TO EM 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: KCNK3, TASK, TASK1; 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-CT10HF-LIC KEYWDS K2P, MEMBRANE PROTEIN, POTASSIUM CHANNEL, ION CHANNEL EXPDTA ELECTRON MICROSCOPY AUTHOR K.E.J.RODSTROM,P.H.HALL,S.J.TUCKER REVDAT 2 15-JAN-25 9G9X 1 JRNL REVDAT 1 18-DEC-24 9G9X 0 JRNL AUTH P.R.HALL,T.JOUEN-TACHOIRE,M.SCHEWE,P.PROKS,T.BAUKROWITZ, JRNL AUTH 2 E.P.CARPENTER,S.NEWSTEAD,K.E.J.RODSTROM,S.J.TUCKER JRNL TITL STRUCTURES OF TASK-1 AND TASK-3 K2P CHANNELS PROVIDE INSIGHT JRNL TITL 2 INTO THEIR GATING AND DYSFUNCTION IN DISEASE. JRNL REF STRUCTURE V. 33 115 2025 JRNL REFN ISSN 0969-2126 JRNL PMID 39637865 JRNL DOI 10.1016/J.STR.2024.11.005 REMARK 2 REMARK 2 RESOLUTION. 3.13 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, EPU, CRYOSPARC, COOT, REMARK 3 CRYOSPARC, CRYOSPARC, CRYOSPARC, PHENIX REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : 6RV2 REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : FLEXIBLE FIT REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : NULL 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) : 3.130 REMARK 3 NUMBER OF PARTICLES : 117627 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 9G9X COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 25-JUL-24. REMARK 100 THE DEPOSITION ID IS D_1292140371. 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 : K2P3.1 HOMODIMER REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 3.60 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : GRID BLOTTED FOR 3.5 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 TEV PROTEASE CLEAVAGE REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 17288 REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : FEI TITAN KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 BIOQUANTUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1250.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2500.00 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) : 4117.00 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 LYS A 145 REMARK 465 GLY A 146 REMARK 465 LEU A 147 REMARK 465 GLY A 148 REMARK 465 MET A 149 REMARK 465 ARG A 150 REMARK 465 ARG A 151 REMARK 465 ALA A 152 REMARK 465 ASP A 253 REMARK 465 GLU A 254 REMARK 465 LYS A 255 REMARK 465 ARG A 256 REMARK 465 ASP A 257 REMARK 465 ALA A 258 REMARK 465 GLU A 259 REMARK 465 ASN A 260 REMARK 465 LEU A 261 REMARK 465 TYR A 262 REMARK 465 PHE A 263 REMARK 465 GLN A 264 REMARK 465 LYS B 145 REMARK 465 GLY B 146 REMARK 465 LEU B 147 REMARK 465 GLY B 148 REMARK 465 MET B 149 REMARK 465 ARG B 150 REMARK 465 ARG B 151 REMARK 465 ALA B 152 REMARK 465 ASP B 253 REMARK 465 GLU B 254 REMARK 465 LYS B 255 REMARK 465 ARG B 256 REMARK 465 ASP B 257 REMARK 465 ALA B 258 REMARK 465 GLU B 259 REMARK 465 ASN B 260 REMARK 465 LEU B 261 REMARK 465 TYR B 262 REMARK 465 PHE B 263 REMARK 465 GLN B 264 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 ARG A 3 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 51 CG CD NE CZ NH1 NH2 REMARK 470 GLU A 60 CG CD OE1 OE2 REMARK 470 GLU A 63 CG CD OE1 OE2 REMARK 470 ARG A 64 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 70 CG CD CE NZ REMARK 470 LYS A 73 CG CD CE NZ REMARK 470 LYS A 144 CG CD CE NZ REMARK 470 ASP A 153 CG OD1 OD2 REMARK 470 GLU A 252 CG CD OE1 OE2 REMARK 470 MET B 1 CG SD CE REMARK 470 ARG B 3 CG CD NE CZ NH1 NH2 REMARK 470 ARG B 51 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 60 CG CD OE1 OE2 REMARK 470 GLU B 63 CG CD OE1 OE2 REMARK 470 ARG B 64 CG CD NE CZ NH1 NH2 REMARK 470 LYS B 70 CG CD CE NZ REMARK 470 LYS B 73 CG CD CE NZ REMARK 470 LYS B 144 CG CD CE NZ REMARK 470 ASP B 153 CG OD1 OD2 REMARK 470 GLU B 252 CG CD OE1 OE2 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 304 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 93 O REMARK 620 2 ILE A 94 O 67.5 REMARK 620 3 THR A 199 O 67.5 84.7 REMARK 620 4 ILE A 200 O 121.8 77.9 63.9 REMARK 620 5 THR B 93 O 103.4 153.8 69.2 87.7 REMARK 620 6 ILE B 94 O 153.8 131.1 125.8 83.3 67.4 REMARK 620 7 THR B 199 O 69.2 125.8 107.0 155.1 67.5 84.7 REMARK 620 8 ILE B 200 O 87.7 83.3 155.1 133.8 121.8 77.9 63.9 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 305 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 93 O REMARK 620 2 THR A 93 OG1 56.9 REMARK 620 3 THR A 199 O 67.1 104.4 REMARK 620 4 THR A 199 OG1 96.7 84.8 55.0 REMARK 620 5 THR B 93 O 104.0 160.1 68.8 104.4 REMARK 620 6 THR B 93 OG1 160.1 142.7 98.2 84.3 56.9 REMARK 620 7 THR B 199 O 68.8 98.2 104.9 159.4 67.1 104.4 REMARK 620 8 THR B 199 OG1 104.4 84.3 159.4 145.4 96.7 84.8 55.0 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 69.7 REMARK 620 3 GLY A 201 O 70.0 94.5 REMARK 620 4 PHE A 202 O 122.5 77.9 66.6 REMARK 620 5 GLY B 95 O 104.5 163.6 69.2 93.5 REMARK 620 6 TYR B 96 O 163.6 120.0 119.5 73.8 69.7 REMARK 620 7 GLY B 201 O 69.2 119.5 110.5 162.5 69.9 94.5 REMARK 620 8 PHE B 202 O 93.5 73.8 162.5 121.5 122.5 77.9 66.6 REMARK 620 N 1 2 3 4 5 6 7 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-51160 RELATED DB: EMDB REMARK 900 STRUCTURE OF THE HUMAN TWO PORE DOMAIN POTASSIUM ION CHANNEL TASK-1 REMARK 900 (K2P3.1) DBREF 9G9X A 1 259 UNP O14649 KCNK3_HUMAN 1 259 DBREF 9G9X B 1 259 UNP O14649 KCNK3_HUMAN 1 259 SEQADV 9G9X ASN A 260 UNP O14649 EXPRESSION TAG SEQADV 9G9X LEU A 261 UNP O14649 EXPRESSION TAG SEQADV 9G9X TYR A 262 UNP O14649 EXPRESSION TAG SEQADV 9G9X PHE A 263 UNP O14649 EXPRESSION TAG SEQADV 9G9X GLN A 264 UNP O14649 EXPRESSION TAG SEQADV 9G9X ASN B 260 UNP O14649 EXPRESSION TAG SEQADV 9G9X LEU B 261 UNP O14649 EXPRESSION TAG SEQADV 9G9X TYR B 262 UNP O14649 EXPRESSION TAG SEQADV 9G9X PHE B 263 UNP O14649 EXPRESSION TAG SEQADV 9G9X GLN B 264 UNP O14649 EXPRESSION TAG SEQRES 1 A 264 MET LYS ARG GLN ASN VAL ARG THR LEU ALA LEU ILE VAL SEQRES 2 A 264 CYS THR PHE THR TYR LEU LEU VAL GLY ALA ALA VAL PHE SEQRES 3 A 264 ASP ALA LEU GLU SER GLU PRO GLU LEU ILE GLU ARG GLN SEQRES 4 A 264 ARG LEU GLU LEU ARG GLN GLN GLU LEU ARG ALA ARG TYR SEQRES 5 A 264 ASN LEU SER GLN GLY GLY TYR GLU GLU LEU GLU ARG VAL SEQRES 6 A 264 VAL LEU ARG LEU LYS PRO HIS LYS ALA GLY VAL GLN TRP SEQRES 7 A 264 ARG PHE ALA GLY SER PHE TYR PHE ALA ILE THR VAL ILE SEQRES 8 A 264 THR THR ILE GLY TYR GLY HIS ALA ALA PRO SER THR ASP SEQRES 9 A 264 GLY GLY LYS VAL PHE CYS MET PHE TYR ALA LEU LEU GLY SEQRES 10 A 264 ILE PRO LEU THR LEU VAL MET PHE GLN SER LEU GLY GLU SEQRES 11 A 264 ARG ILE ASN THR LEU VAL ARG TYR LEU LEU HIS ARG ALA SEQRES 12 A 264 LYS LYS GLY LEU GLY MET ARG ARG ALA ASP VAL SER MET SEQRES 13 A 264 ALA ASN MET VAL LEU ILE GLY PHE PHE SER CYS ILE SER SEQRES 14 A 264 THR LEU CYS ILE GLY ALA ALA ALA PHE SER HIS TYR GLU SEQRES 15 A 264 HIS TRP THR PHE PHE GLN ALA TYR TYR TYR CYS PHE ILE SEQRES 16 A 264 THR LEU THR THR ILE GLY PHE GLY ASP TYR VAL ALA LEU SEQRES 17 A 264 GLN LYS ASP GLN ALA LEU GLN THR GLN PRO GLN TYR VAL SEQRES 18 A 264 ALA PHE SER PHE VAL TYR ILE LEU THR GLY LEU THR VAL SEQRES 19 A 264 ILE GLY ALA PHE LEU ASN LEU VAL VAL LEU ARG PHE MET SEQRES 20 A 264 THR MET ASN ALA GLU ASP GLU LYS ARG ASP ALA GLU ASN SEQRES 21 A 264 LEU TYR PHE GLN SEQRES 1 B 264 MET LYS ARG GLN ASN VAL ARG THR LEU ALA LEU ILE VAL SEQRES 2 B 264 CYS THR PHE THR TYR LEU LEU VAL GLY ALA ALA VAL PHE SEQRES 3 B 264 ASP ALA LEU GLU SER GLU PRO GLU LEU ILE GLU ARG GLN SEQRES 4 B 264 ARG LEU GLU LEU ARG GLN GLN GLU LEU ARG ALA ARG TYR SEQRES 5 B 264 ASN LEU SER GLN GLY GLY TYR GLU GLU LEU GLU ARG VAL SEQRES 6 B 264 VAL LEU ARG LEU LYS PRO HIS LYS ALA GLY VAL GLN TRP SEQRES 7 B 264 ARG PHE ALA GLY SER PHE TYR PHE ALA ILE THR VAL ILE SEQRES 8 B 264 THR THR ILE GLY TYR GLY HIS ALA ALA PRO SER THR ASP SEQRES 9 B 264 GLY GLY LYS VAL PHE CYS MET PHE TYR ALA LEU LEU GLY SEQRES 10 B 264 ILE PRO LEU THR LEU VAL MET PHE GLN SER LEU GLY GLU SEQRES 11 B 264 ARG ILE ASN THR LEU VAL ARG TYR LEU LEU HIS ARG ALA SEQRES 12 B 264 LYS LYS GLY LEU GLY MET ARG ARG ALA ASP VAL SER MET SEQRES 13 B 264 ALA ASN MET VAL LEU ILE GLY PHE PHE SER CYS ILE SER SEQRES 14 B 264 THR LEU CYS ILE GLY ALA ALA ALA PHE SER HIS TYR GLU SEQRES 15 B 264 HIS TRP THR PHE PHE GLN ALA TYR TYR TYR CYS PHE ILE SEQRES 16 B 264 THR LEU THR THR ILE GLY PHE GLY ASP TYR VAL ALA LEU SEQRES 17 B 264 GLN LYS ASP GLN ALA LEU GLN THR GLN PRO GLN TYR VAL SEQRES 18 B 264 ALA PHE SER PHE VAL TYR ILE LEU THR GLY LEU THR VAL SEQRES 19 B 264 ILE GLY ALA PHE LEU ASN LEU VAL VAL LEU ARG PHE MET SEQRES 20 B 264 THR MET ASN ALA GLU ASP GLU LYS ARG ASP ALA GLU ASN SEQRES 21 B 264 LEU TYR PHE GLN HET Y01 A 301 35 HET Y01 A 302 35 HET K A 303 1 HET K A 304 1 HET K A 305 1 HET Y01 B 301 35 HET Y01 B 302 35 HETNAM Y01 CHOLESTEROL HEMISUCCINATE HETNAM K POTASSIUM ION FORMUL 3 Y01 4(C31 H50 O4) FORMUL 5 K 3(K 1+) HELIX 1 AA1 MET A 1 TYR A 52 1 52 HELIX 2 AA2 SER A 55 LYS A 70 1 16 HELIX 3 AA3 PRO A 71 GLY A 75 5 5 HELIX 4 AA4 ARG A 79 THR A 92 1 14 HELIX 5 AA5 THR A 103 ALA A 143 1 41 HELIX 6 AA6 SER A 155 GLU A 182 1 28 HELIX 7 AA7 THR A 185 THR A 198 1 14 HELIX 8 AA8 GLN A 209 ASP A 211 5 3 HELIX 9 AA9 GLN A 212 GLN A 217 1 6 HELIX 10 AB1 GLN A 217 VAL A 243 1 27 HELIX 11 AB2 VAL A 243 THR A 248 1 6 HELIX 12 AB3 MET A 249 GLU A 252 5 4 HELIX 13 AB4 LYS B 2 TYR B 52 1 51 HELIX 14 AB5 SER B 55 LYS B 70 1 16 HELIX 15 AB6 PRO B 71 GLY B 75 5 5 HELIX 16 AB7 ARG B 79 THR B 92 1 14 HELIX 17 AB8 THR B 103 ALA B 143 1 41 HELIX 18 AB9 SER B 155 GLU B 182 1 28 HELIX 19 AC1 THR B 185 THR B 198 1 14 HELIX 20 AC2 GLN B 209 ASP B 211 5 3 HELIX 21 AC3 GLN B 212 GLN B 217 1 6 HELIX 22 AC4 GLN B 217 VAL B 243 1 27 HELIX 23 AC5 VAL B 243 THR B 248 1 6 HELIX 24 AC6 MET B 249 GLU B 252 5 4 LINK O THR A 93 K K A 304 1555 1555 3.09 LINK O THR A 93 K K A 305 1555 1555 3.08 LINK OG1 THR A 93 K K A 305 1555 1555 3.00 LINK O ILE A 94 K K A 304 1555 1555 2.76 LINK O GLY A 95 K K A 303 1555 1555 3.03 LINK O TYR A 96 K K A 303 1555 1555 2.96 LINK O THR A 199 K K A 304 1555 1555 3.14 LINK O THR A 199 K K A 305 1555 1555 3.19 LINK OG1 THR A 199 K K A 305 1555 1555 3.15 LINK O ILE A 200 K K A 304 1555 1555 2.79 LINK O GLY A 201 K K A 303 1555 1555 3.10 LINK O PHE A 202 K K A 303 1555 1555 2.86 LINK K K A 303 O GLY B 95 1555 1555 3.03 LINK K K A 303 O TYR B 96 1555 1555 2.96 LINK K K A 303 O GLY B 201 1555 1555 3.10 LINK K K A 303 O PHE B 202 1555 1555 2.86 LINK K K A 304 O THR B 93 1555 1555 3.09 LINK K K A 304 O ILE B 94 1555 1555 2.76 LINK K K A 304 O THR B 199 1555 1555 3.14 LINK K K A 304 O ILE B 200 1555 1555 2.79 LINK K K A 305 O THR B 93 1555 1555 3.08 LINK K K A 305 OG1 THR B 93 1555 1555 3.00 LINK K K A 305 O THR B 199 1555 1555 3.19 LINK K K A 305 OG1 THR B 199 1555 1555 3.15 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