HEADER TRANSFERASE/RNA 10-OCT-25 9X4H TITLE STRUCTURE OF THE KEOPS-TRNA COMPND MOL_ID: 1; COMPND 2 MOLECULE: N(6)-L-THREONYLCARBAMOYLADENINE SYNTHASE; COMPND 3 CHAIN: A, F; COMPND 4 SYNONYM: KAE1,N6-L-THREONYLCARBAMOYLADENINE SYNTHASE; COMPND 5 EC: 2.3.1.234; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: NON-SPECIFIC SERINE/THREONINE PROTEIN KINASE; COMPND 9 CHAIN: B; COMPND 10 SYNONYM: BUD32; COMPND 11 EC: 2.7.11.1; COMPND 12 ENGINEERED: YES; COMPND 13 MOL_ID: 3; COMPND 14 MOLECULE: EKC/KEOPS COMPLEX SUBUNIT TPRKB; COMPND 15 CHAIN: C; COMPND 16 SYNONYM: CGI121; COMPND 17 ENGINEERED: YES; COMPND 18 MOL_ID: 4; COMPND 19 MOLECULE: L ANTIGEN FAMILY MEMBER 3; COMPND 20 CHAIN: D, E; COMPND 21 SYNONYM: PCC1; COMPND 22 ENGINEERED: YES; COMPND 23 MOL_ID: 5; COMPND 24 MOLECULE: RNA (76-MER); COMPND 25 CHAIN: T; COMPND 26 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CAENORHABDITIS ELEGANS; SOURCE 3 ORGANISM_TAXID: 6239; SOURCE 4 GENE: CELE_Y71H2AM.1, Y71H2AM.1; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 MOL_ID: 2; SOURCE 8 ORGANISM_SCIENTIFIC: CAENORHABDITIS ELEGANS; SOURCE 9 ORGANISM_TAXID: 6239; SOURCE 10 GENE: CELE_F52C12.6, F52C12.6; SOURCE 11 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 12 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 13 MOL_ID: 3; SOURCE 14 ORGANISM_SCIENTIFIC: CAENORHABDITIS ELEGANS; SOURCE 15 ORGANISM_TAXID: 6239; SOURCE 16 GENE: CELE_W03F8.4, W03F8.4; SOURCE 17 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 18 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 19 MOL_ID: 4; SOURCE 20 ORGANISM_SCIENTIFIC: CAENORHABDITIS ELEGANS; SOURCE 21 ORGANISM_TAXID: 6239; SOURCE 22 GENE: CELE_F59A2.5, F59A2.5; SOURCE 23 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 24 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 25 MOL_ID: 5; SOURCE 26 ORGANISM_SCIENTIFIC: CAENORHABDITIS ELEGANS; SOURCE 27 ORGANISM_TAXID: 6239; SOURCE 28 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 29 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS TRNA MODIFICATION, T6A, KEOPS-TRNA COMPLEX, CRYO-EM STRUCTURE, KEYWDS 2 SUBSTRATE RECOGNITION, CATALYTIC MECHANISM, REGULATION PRINCIPLE, KEYWDS 3 TRANSFERASE/RNA, TRANSFERASE-RNA COMPLEX EXPDTA ELECTRON MICROSCOPY AUTHOR Z.L.ZHANG,L.ZHOU,M.Q.JIN,D.S.LEI,W.H.ZHANG REVDAT 1 27-MAY-26 9X4H 0 JRNL AUTH L.ZHOU,Z.ZHANG,M.JIN,D.XIE,H.WEN,E.WESTHOF,D.LEI,W.ZHANG JRNL TITL CATALYTIC AND REGULATORY BASIS OF TRNA T 6 A MODIFICATION BY JRNL TITL 2 THE KEOPS COMPLEX. JRNL REF NAT COMMUN 2026 JRNL REFN ESSN 2041-1723 JRNL PMID 42140986 JRNL DOI 10.1038/S41467-026-73296-6 REMARK 2 REMARK 2 RESOLUTION. 3.36 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, EPU, CRYOSPARC, UCSF REMARK 3 CHIMERA, PHENIX, COOT, CRYOSPARC, REMARK 3 CRYOSPARC, CRYOSPARC, CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : NULL REMARK 3 REFINEMENT PROTOCOL : NULL 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) : 3.360 REMARK 3 NUMBER OF PARTICLES : 123388 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 9X4H COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 16-OCT-25. REMARK 100 THE DEPOSITION ID IS D_1300064496. 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 : CEKEOPS-TRNA REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : NULL REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 7.50 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : NULL 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) : 800.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2200.00 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) : 6000.00 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: HEPTAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D, E, F, T 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 MET B 1 REMARK 465 THR B 2 REMARK 465 ALA B 3 REMARK 465 ALA B 4 REMARK 465 THR B 5 REMARK 465 THR B 6 REMARK 465 SER B 7 REMARK 465 SER B 8 REMARK 465 ASP B 9 REMARK 465 SER B 10 REMARK 465 GLU B 11 REMARK 465 GLY B 12 REMARK 465 GLU B 13 REMARK 465 MET B 14 REMARK 465 ASP B 15 REMARK 465 PHE B 16 REMARK 465 GLU B 17 REMARK 465 THR B 18 REMARK 465 THR B 19 REMARK 465 ILE B 20 REMARK 465 GLU B 21 REMARK 465 THR B 22 REMARK 465 GLY B 23 REMARK 465 PHE B 24 REMARK 465 GLY B 25 REMARK 465 TYR B 26 REMARK 465 GLN B 27 REMARK 465 ILE B 28 REMARK 465 ASP B 29 REMARK 465 GLY B 30 REMARK 465 LEU B 31 REMARK 465 LEU B 32 REMARK 465 TYR B 33 REMARK 465 GLN B 34 REMARK 465 GLY B 35 REMARK 465 ALA B 36 REMARK 465 GLU B 37 REMARK 465 ALA B 38 REMARK 465 LYS B 39 REMARK 465 GLN B 120 REMARK 465 LEU B 121 REMARK 465 ASN B 122 REMARK 465 PRO B 123 REMARK 465 ALA B 124 REMARK 465 ARG B 241 REMARK 465 ASP B 242 REMARK 465 MET B 243 REMARK 465 ILE B 244 REMARK 465 GLY B 245 REMARK 465 MET C 1 REMARK 465 LYS C 2 REMARK 465 HIS C 3 REMARK 465 PRO C 13 REMARK 465 TYR C 14 REMARK 465 ASP C 15 REMARK 465 PHE C 16 REMARK 465 VAL C 30 REMARK 465 LYS C 31 REMARK 465 ASN C 32 REMARK 465 ALA C 33 REMARK 465 ASP C 119 REMARK 465 ASP C 120 REMARK 465 SER C 121 REMARK 465 GLY C 122 REMARK 465 LYS C 123 REMARK 465 PRO C 161 REMARK 465 ALA C 162 REMARK 465 PHE C 163 REMARK 465 VAL C 164 REMARK 465 GLU C 165 REMARK 465 GLU C 166 REMARK 465 MET D 1 REMARK 465 GLU D 2 REMARK 465 VAL D 3 REMARK 465 ASP D 4 REMARK 465 THR D 5 REMARK 465 SER D 6 REMARK 465 SER D 7 REMARK 465 SER D 8 REMARK 465 SER D 9 REMARK 465 SER D 10 REMARK 465 SER D 11 REMARK 465 GLU D 12 REMARK 465 ASP D 13 REMARK 465 GLU D 14 REMARK 465 CYS D 15 REMARK 465 ASP D 16 REMARK 465 PRO D 17 REMARK 465 SER D 18 REMARK 465 SER D 19 REMARK 465 PRO D 20 REMARK 465 SER D 21 REMARK 465 THR D 22 REMARK 465 GLY D 106 REMARK 465 LYS D 107 REMARK 465 SER D 108 REMARK 465 LYS D 109 REMARK 465 GLU D 110 REMARK 465 ASN D 111 REMARK 465 GLY D 112 REMARK 465 LEU D 113 REMARK 465 LYS D 114 REMARK 465 ARG D 115 REMARK 465 LYS D 116 REMARK 465 LEU D 117 REMARK 465 SER D 118 REMARK 465 ASN D 119 REMARK 465 GLY D 120 REMARK 465 SER D 121 REMARK 465 GLN D 122 REMARK 465 ALA D 123 REMARK 465 MET E 1 REMARK 465 GLU E 2 REMARK 465 VAL E 3 REMARK 465 ASP E 4 REMARK 465 THR E 5 REMARK 465 SER E 6 REMARK 465 SER E 7 REMARK 465 SER E 8 REMARK 465 SER E 9 REMARK 465 SER E 10 REMARK 465 SER E 11 REMARK 465 GLU E 12 REMARK 465 ASP E 13 REMARK 465 GLU E 14 REMARK 465 CYS E 15 REMARK 465 ASP E 16 REMARK 465 PRO E 17 REMARK 465 SER E 18 REMARK 465 SER E 19 REMARK 465 PRO E 20 REMARK 465 SER E 21 REMARK 465 THR E 22 REMARK 465 ARG E 54 REMARK 465 ARG E 55 REMARK 465 SER E 56 REMARK 465 GLY E 57 REMARK 465 GLU E 103 REMARK 465 ASN E 104 REMARK 465 LEU E 105 REMARK 465 GLY E 106 REMARK 465 LYS E 107 REMARK 465 SER E 108 REMARK 465 LYS E 109 REMARK 465 GLU E 110 REMARK 465 ASN E 111 REMARK 465 GLY E 112 REMARK 465 LEU E 113 REMARK 465 LYS E 114 REMARK 465 ARG E 115 REMARK 465 LYS E 116 REMARK 465 LEU E 117 REMARK 465 SER E 118 REMARK 465 ASN E 119 REMARK 465 GLY E 120 REMARK 465 SER E 121 REMARK 465 GLN E 122 REMARK 465 ALA E 123 REMARK 465 MET F 1 REMARK 465 PRO F 36 REMARK 465 GLY F 37 REMARK 465 GLU F 38 REMARK 465 GLY F 39 REMARK 465 PHE F 40 REMARK 465 ARG F 41 REMARK 465 PRO F 42 REMARK 465 THR F 43 REMARK 465 GLU F 44 REMARK 465 MET F 118 REMARK 465 GLY F 119 REMARK 465 ARG F 120 REMARK 465 LEU F 121 REMARK 465 ILE F 122 REMARK 465 THR F 123 REMARK 465 GLY F 124 REMARK 465 ALA F 125 REMARK 465 ASP F 126 REMARK 465 ASN F 127 REMARK 465 PRO F 128 REMARK 465 THR F 154 REMARK 465 ILE F 155 REMARK 465 ASP F 156 REMARK 465 ILE F 157 REMARK 465 ALA F 158 REMARK 465 GLY F 179 REMARK 465 TYR F 180 REMARK 465 ASN F 181 REMARK 465 ILE F 182 REMARK 465 GLU F 183 REMARK 465 GLN F 184 REMARK 465 LEU F 185 REMARK 465 ALA F 186 REMARK 465 LYS F 187 REMARK 465 ASN F 188 REMARK 465 GLY F 189 REMARK 465 LYS F 190 REMARK 465 LYS F 191 REMARK 465 LEU F 192 REMARK 465 MET F 193 REMARK 465 GLU F 194 REMARK 465 LEU F 195 REMARK 465 PRO F 196 REMARK 465 TYR F 197 REMARK 465 SER F 198 REMARK 465 VAL F 199 REMARK 465 LYS F 200 REMARK 465 LEU F 212 REMARK 465 ILE F 213 REMARK 465 GLU F 214 REMARK 465 LYS F 215 REMARK 465 LYS F 216 REMARK 465 ALA F 217 REMARK 465 PRO F 218 REMARK 465 LYS F 219 REMARK 465 LEU F 220 REMARK 465 ILE F 221 REMARK 465 GLU F 222 REMARK 465 SER F 223 REMARK 465 GLY F 224 REMARK 465 ASP F 225 REMARK 465 ALA F 250 REMARK 465 MET F 251 REMARK 465 ALA F 252 REMARK 465 HIS F 253 REMARK 465 THR F 254 REMARK 465 SER F 255 REMARK 465 SER F 256 REMARK 465 LYS F 257 REMARK 465 GLU F 258 REMARK 465 ALA F 277 REMARK 465 MET F 278 REMARK 465 CYS F 279 REMARK 465 ALA F 280 REMARK 465 GLU F 281 REMARK 465 ARG F 282 REMARK 465 GLY F 283 REMARK 465 ALA F 284 REMARK 465 HIS F 285 REMARK 465 LEU F 286 REMARK 465 PHE F 287 REMARK 465 ALA F 288 REMARK 465 THR F 289 REMARK 465 ASP F 290 REMARK 465 GLU F 291 REMARK 465 ARG F 292 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 VAL A 24 -168.71 45.98 REMARK 500 ASN A 27 89.35 -150.75 REMARK 500 PHE A 40 141.40 123.45 REMARK 500 ALA A 64 59.54 -92.38 REMARK 500 ILE A 66 -107.67 51.78 REMARK 500 ASP A 74 43.18 36.52 REMARK 500 MET A 84 -153.69 58.45 REMARK 500 LYS A 103 64.35 39.85 REMARK 500 ASN A 127 74.95 -159.39 REMARK 500 LYS A 145 -8.81 65.88 REMARK 500 LYS A 146 -23.28 -140.35 REMARK 500 ASP A 156 -159.24 -147.16 REMARK 500 LEU A 170 -76.41 -64.61 REMARK 500 LYS A 171 -15.80 -148.78 REMARK 500 ASN A 174 52.21 -90.89 REMARK 500 LEU A 317 -36.89 -134.10 REMARK 500 ARG A 325 70.47 -100.38 REMARK 500 HIS A 332 67.02 60.42 REMARK 500 PHE B 108 -12.24 75.95 REMARK 500 VAL B 109 73.84 37.13 REMARK 500 PHE B 126 17.99 58.65 REMARK 500 ASP B 153 56.18 -91.03 REMARK 500 ASN B 158 36.36 -99.04 REMARK 500 ARG B 162 -167.68 -78.59 REMARK 500 ASP B 173 132.07 -34.29 REMARK 500 PHE B 174 33.35 -92.82 REMARK 500 ALA B 219 15.88 -140.17 REMARK 500 ALA C 47 17.88 -140.36 REMARK 500 GLU C 57 165.76 67.35 REMARK 500 GLU C 107 49.32 -79.75 REMARK 500 HIS C 108 132.75 63.70 REMARK 500 THR C 110 17.12 53.29 REMARK 500 ALA C 111 111.28 -160.50 REMARK 500 PHE C 117 30.35 -143.21 REMARK 500 VAL C 155 -30.70 -131.55 REMARK 500 TYR C 156 65.19 -101.72 REMARK 500 GLU D 52 74.38 41.79 REMARK 500 ARG D 54 -168.50 -167.74 REMARK 500 ARG D 55 64.76 60.36 REMARK 500 SER D 56 -168.53 60.49 REMARK 500 GLU D 65 48.87 -91.56 REMARK 500 PHE D 68 52.42 -118.18 REMARK 500 ASP D 77 79.32 52.91 REMARK 500 PRO D 78 1.78 -62.49 REMARK 500 ASP E 77 77.79 54.98 REMARK 500 VAL F 24 -166.10 44.77 REMARK 500 ILE F 66 -162.90 44.58 REMARK 500 ASP F 74 50.77 34.02 REMARK 500 MET F 84 147.96 70.91 REMARK 500 LYS F 103 62.88 39.07 REMARK 500 REMARK 500 THIS ENTRY HAS 58 RAMACHANDRAN OUTLIERS. 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 401 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 SER A 134 OG REMARK 620 2 ASP A 296 OD2 58.0 REMARK 620 N 1 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: D_1300064485 RELATED DB: PDB-DEV REMARK 900 RELATED ID: EMD-66545 RELATED DB: EMDB REMARK 900 STRUCTURE OF THE KEOPS-TRNA DBREF 9X4H A 1 337 UNP Q9BL28 Q9BL28_CAEEL 1 337 DBREF 9X4H B 1 245 UNP B5WWL2 B5WWL2_CAEEL 1 245 DBREF 9X4H C 1 183 UNP O44566 O44566_CAEEL 1 183 DBREF 9X4H D 1 123 UNP Q21019 Q21019_CAEEL 1 123 DBREF 9X4H E 1 123 UNP Q21019 Q21019_CAEEL 1 123 DBREF 9X4H F 1 337 UNP Q9BL28 Q9BL28_CAEEL 1 337 DBREF 9X4H T 1 76 PDB 9X4H 9X4H 1 76 SEQRES 1 A 337 MET VAL CYS VAL ILE GLY ILE GLU GLY SER ALA ASN LYS SEQRES 2 A 337 ILE GLY VAL GLY ILE ILE ARG ASP GLY VAL VAL LEU SER SEQRES 3 A 337 ASN PRO ARG ALA THR PHE HIS ALA PRO PRO GLY GLU GLY SEQRES 4 A 337 PHE ARG PRO THR GLU THR ALA GLN HIS HIS ARG GLN GLN SEQRES 5 A 337 ILE VAL ARG LEU VAL GLY GLU ALA ILE LYS LEU ALA ASN SEQRES 6 A 337 ILE GLN ASN PRO GLU LEU GLU ILE ASP GLY ILE ALA TYR SEQRES 7 A 337 THR LYS GLY PRO GLY MET GLY ALA PRO LEU GLN VAL GLY SEQRES 8 A 337 ALA ILE VAL ALA ARG THR LEU SER LEU THR TRP LYS LYS SEQRES 9 A 337 PRO ILE ILE PRO VAL ASN HIS CYS VAL GLY HIS ILE GLU SEQRES 10 A 337 MET GLY ARG LEU ILE THR GLY ALA ASP ASN PRO VAL VAL SEQRES 11 A 337 LEU TYR VAL SER GLY GLY ASN THR GLN VAL ILE SER TYR SEQRES 12 A 337 THR LYS LYS ARG TYR ARG ILE PHE GLY GLU THR ILE ASP SEQRES 13 A 337 ILE ALA VAL GLY ASN CYS LEU ASP ARG PHE ALA ARG VAL SEQRES 14 A 337 LEU LYS LEU PRO ASN ALA PRO SER PRO GLY TYR ASN ILE SEQRES 15 A 337 GLU GLN LEU ALA LYS ASN GLY LYS LYS LEU MET GLU LEU SEQRES 16 A 337 PRO TYR SER VAL LYS GLY MET ASP VAL SER LEU SER GLY SEQRES 17 A 337 ILE LEU SER LEU ILE GLU LYS LYS ALA PRO LYS LEU ILE SEQRES 18 A 337 GLU SER GLY ASP PHE THR PRO GLU ASP LEU CYS PHE SER SEQRES 19 A 337 LEU GLN GLU THR VAL PHE ALA MET LEU ILE GLU ILE THR SEQRES 20 A 337 GLU ARG ALA MET ALA HIS THR SER SER LYS GLU LEU LEU SEQRES 21 A 337 ILE VAL GLY GLY VAL GLY CYS ASN LEU ARG LEU GLN GLU SEQRES 22 A 337 MET ALA SER ALA MET CYS ALA GLU ARG GLY ALA HIS LEU SEQRES 23 A 337 PHE ALA THR ASP GLU ARG PHE CYS ILE ASP ASN GLY ALA SEQRES 24 A 337 MET ILE ALA ARG ALA GLY GLU LEU MET LEU ALA SER GLY SEQRES 25 A 337 MET ARG PHE ASP LEU ARG LYS THR THR THR THR GLN ARG SEQRES 26 A 337 TYR ARG THR ASP GLN VAL HIS VAL GLU TRP ARG ASP SEQRES 1 B 245 MET THR ALA ALA THR THR SER SER ASP SER GLU GLY GLU SEQRES 2 B 245 MET ASP PHE GLU THR THR ILE GLU THR GLY PHE GLY TYR SEQRES 3 B 245 GLN ILE ASP GLY LEU LEU TYR GLN GLY ALA GLU ALA LYS SEQRES 4 B 245 VAL THR LYS CYS ILE TRP LEU GLY ARG GLN ALA ILE ILE SEQRES 5 B 245 LYS GLU ARG PHE SER LYS GLY TYR ARG HIS PRO THR LEU SEQRES 6 B 245 ASP THR GLN LEU ASN LYS ALA ARG THR LYS GLN GLU ILE SEQRES 7 B 245 ARG GLY LEU ASN LYS ALA ARG GLU LEU GLY ILE HIS VAL SEQRES 8 B 245 PRO ALA VAL TYR PHE ILE ASP ASN GLU LYS ASN GLN LEU SEQRES 9 B 245 ILE MET GLU PHE VAL PRO GLY SER THR ALA LYS ASN TRP SEQRES 10 B 245 ILE SER GLN LEU ASN PRO ALA ASP PHE ASP ALA LYS THR SEQRES 11 B 245 ARG GLU PHE GLY GLN ILE PHE GLY GLU LYS LEU GLY LYS SEQRES 12 B 245 LEU HIS ARG GLY GLY LEU ILE HIS GLY ASP LEU THR THR SEQRES 13 B 245 SER ASN ILE ILE LEU ARG ASP ASP ASP LEU GLN LYS MET SEQRES 14 B 245 THR PHE ILE ASP PHE GLY LEU SER SER GLN GLY LYS VAL SEQRES 15 B 245 THR PRO GLU GLU LYS GLY VAL ASP LEU TYR VAL LEU GLU SEQRES 16 B 245 ARG ALA VAL ILE SER THR HIS ASP LYS CYS ALA ALA LEU SEQRES 17 B 245 ILE GLU GLY LEU MET GLU GLY TYR LYS LYS ALA ASP GLY SEQRES 18 B 245 LYS GLN PHE VAL ALA VAL GLU LYS LYS LEU ASN GLU ILE SEQRES 19 B 245 ARG LEU ARG GLY ARG LYS ARG ASP MET ILE GLY SEQRES 1 C 183 MET LYS HIS SER HIS LEU TYR GLU LEU GLN PRO ASP PRO SEQRES 2 C 183 TYR ASP PHE THR GLN ARG LYS THR CYS ARG VAL CYS LEU SEQRES 3 C 183 PHE LYS ASP VAL LYS ASN ALA ALA GLU LEU SER GLN GLN SEQRES 4 C 183 LEU LYS GLU GLY LYS ILE ASP ALA ALA LEU ILE ARG ALA SEQRES 5 C 183 GLU LEU VAL LEU GLU PRO PHE VAL LEU LEU ALA ALA ALA SEQRES 6 C 183 ASN ARG ALA VAL HIS GLN SER ALA HIS ASN ARG MET SER SEQRES 7 C 183 CYS ARG SER LEU ALA ALA GLU LEU VAL TYR SER LEU SER SEQRES 8 C 183 PRO SER ARG ASN ILE THR ASP SER LEU VAL THR PHE GLY SEQRES 9 C 183 ILE ALA GLU HIS SER THR ALA ILE ILE ALA ALA ILE PHE SEQRES 10 C 183 ASP ASP ASP SER GLY LYS ALA MET LYS LYS LEU ALA LYS SEQRES 11 C 183 ALA ILE LYS GLY THR PRO VAL PRO LEU MET GLU GLY LEU SEQRES 12 C 183 PRO LYS PHE ALA ASN VAL ASN MET ILE LYS LYS VAL TYR SEQRES 13 C 183 GLN VAL GLY ASN PRO ALA PHE VAL GLU GLU GLY LEU SER SEQRES 14 C 183 ASP HIS ILE VAL SER ARG MET VAL SER LYS ASP PHE VAL SEQRES 15 C 183 SER SEQRES 1 D 123 MET GLU VAL ASP THR SER SER SER SER SER SER GLU ASP SEQRES 2 D 123 GLU CYS ASP PRO SER SER PRO SER THR ALA TYR ILE HIS SEQRES 3 D 123 SER ALA SER VAL ARG LEU SER VAL GLY THR GLU GLU ALA SEQRES 4 D 123 ALA ARG THR VAL ALA ASP VAL ILE LYS ILE ASP LYS GLU SEQRES 5 D 123 PRO ARG ARG SER GLY ALA ARG ARG GLU VAL CYS SER GLU SEQRES 6 D 123 GLY GLU PHE VAL VAL ILE LYS ILE GLU SER LYS ASP PRO SEQRES 7 D 123 LYS SER LEU SER LYS SER ILE ALA ASN ALA VAL ASP MET SEQRES 8 D 123 ILE ASP LEU SER VAL LYS THR ILE LYS LEU CYS GLU ASN SEQRES 9 D 123 LEU GLY LYS SER LYS GLU ASN GLY LEU LYS ARG LYS LEU SEQRES 10 D 123 SER ASN GLY SER GLN ALA SEQRES 1 E 123 MET GLU VAL ASP THR SER SER SER SER SER SER GLU ASP SEQRES 2 E 123 GLU CYS ASP PRO SER SER PRO SER THR ALA TYR ILE HIS SEQRES 3 E 123 SER ALA SER VAL ARG LEU SER VAL GLY THR GLU GLU ALA SEQRES 4 E 123 ALA ARG THR VAL ALA ASP VAL ILE LYS ILE ASP LYS GLU SEQRES 5 E 123 PRO ARG ARG SER GLY ALA ARG ARG GLU VAL CYS SER GLU SEQRES 6 E 123 GLY GLU PHE VAL VAL ILE LYS ILE GLU SER LYS ASP PRO SEQRES 7 E 123 LYS SER LEU SER LYS SER ILE ALA ASN ALA VAL ASP MET SEQRES 8 E 123 ILE ASP LEU SER VAL LYS THR ILE LYS LEU CYS GLU ASN SEQRES 9 E 123 LEU GLY LYS SER LYS GLU ASN GLY LEU LYS ARG LYS LEU SEQRES 10 E 123 SER ASN GLY SER GLN ALA SEQRES 1 F 337 MET VAL CYS VAL ILE GLY ILE GLU GLY SER ALA ASN LYS SEQRES 2 F 337 ILE GLY VAL GLY ILE ILE ARG ASP GLY VAL VAL LEU SER SEQRES 3 F 337 ASN PRO ARG ALA THR PHE HIS ALA PRO PRO GLY GLU GLY SEQRES 4 F 337 PHE ARG PRO THR GLU THR ALA GLN HIS HIS ARG GLN GLN SEQRES 5 F 337 ILE VAL ARG LEU VAL GLY GLU ALA ILE LYS LEU ALA ASN SEQRES 6 F 337 ILE GLN ASN PRO GLU LEU GLU ILE ASP GLY ILE ALA TYR SEQRES 7 F 337 THR LYS GLY PRO GLY MET GLY ALA PRO LEU GLN VAL GLY SEQRES 8 F 337 ALA ILE VAL ALA ARG THR LEU SER LEU THR TRP LYS LYS SEQRES 9 F 337 PRO ILE ILE PRO VAL ASN HIS CYS VAL GLY HIS ILE GLU SEQRES 10 F 337 MET GLY ARG LEU ILE THR GLY ALA ASP ASN PRO VAL VAL SEQRES 11 F 337 LEU TYR VAL SER GLY GLY ASN THR GLN VAL ILE SER TYR SEQRES 12 F 337 THR LYS LYS ARG TYR ARG ILE PHE GLY GLU THR ILE ASP SEQRES 13 F 337 ILE ALA VAL GLY ASN CYS LEU ASP ARG PHE ALA ARG VAL SEQRES 14 F 337 LEU LYS LEU PRO ASN ALA PRO SER PRO GLY TYR ASN ILE SEQRES 15 F 337 GLU GLN LEU ALA LYS ASN GLY LYS LYS LEU MET GLU LEU SEQRES 16 F 337 PRO TYR SER VAL LYS GLY MET ASP VAL SER LEU SER GLY SEQRES 17 F 337 ILE LEU SER LEU ILE GLU LYS LYS ALA PRO LYS LEU ILE SEQRES 18 F 337 GLU SER GLY ASP PHE THR PRO GLU ASP LEU CYS PHE SER SEQRES 19 F 337 LEU GLN GLU THR VAL PHE ALA MET LEU ILE GLU ILE THR SEQRES 20 F 337 GLU ARG ALA MET ALA HIS THR SER SER LYS GLU LEU LEU SEQRES 21 F 337 ILE VAL GLY GLY VAL GLY CYS ASN LEU ARG LEU GLN GLU SEQRES 22 F 337 MET ALA SER ALA MET CYS ALA GLU ARG GLY ALA HIS LEU SEQRES 23 F 337 PHE ALA THR ASP GLU ARG PHE CYS ILE ASP ASN GLY ALA SEQRES 24 F 337 MET ILE ALA ARG ALA GLY GLU LEU MET LEU ALA SER GLY SEQRES 25 F 337 MET ARG PHE ASP LEU ARG LYS THR THR THR THR GLN ARG SEQRES 26 F 337 TYR ARG THR ASP GLN VAL HIS VAL GLU TRP ARG ASP SEQRES 1 T 76 G C U U C C G U G G C G C SEQRES 2 T 76 A A U A G G C A G C G C G SEQRES 3 T 76 U U C G G C U G U U A A C SEQRES 4 T 76 C G A A A G G U U G G U G SEQRES 5 T 76 G U U C G A G C C C A C C SEQRES 6 T 76 C G G G A G C G C C A HET K A 401 1 HET K F 401 1 HETNAM K POTASSIUM ION FORMUL 8 K 2(K 1+) HELIX 1 AA1 ARG A 41 ALA A 64 1 24 HELIX 2 AA2 GLY A 85 TRP A 102 1 18 HELIX 3 AA3 HIS A 111 GLY A 124 1 14 HELIX 4 AA4 ALA A 158 LYS A 171 1 14 HELIX 5 AA5 SER A 177 ALA A 186 1 10 HELIX 6 AA6 LEU A 206 LEU A 220 1 15 HELIX 7 AA7 ASP A 230 THR A 254 1 25 HELIX 8 AA8 GLY A 263 CYS A 267 5 5 HELIX 9 AA9 ASN A 268 GLY A 283 1 16 HELIX 10 AB1 GLY A 298 SER A 311 1 14 HELIX 11 AB2 HIS B 62 LEU B 87 1 26 HELIX 12 AB3 ALA B 114 SER B 119 1 6 HELIX 13 AB4 ASP B 127 GLY B 148 1 22 HELIX 14 AB5 THR B 155 SER B 157 5 3 HELIX 15 AB6 THR B 183 HIS B 202 1 20 HELIX 16 AB7 LYS B 204 ASP B 220 1 17 HELIX 17 AB8 ASP B 220 ARG B 239 1 20 HELIX 18 AB9 GLU C 35 GLY C 43 1 9 HELIX 19 AC1 LEU C 56 HIS C 74 1 19 HELIX 20 AC2 SER C 81 LEU C 90 1 10 HELIX 21 AC3 ASN C 95 GLY C 104 1 10 HELIX 22 AC4 PRO C 138 VAL C 155 1 18 HELIX 23 AC5 LEU C 168 LYS C 179 1 12 HELIX 24 AC6 THR D 36 ASP D 50 1 15 HELIX 25 AC7 PRO D 78 LEU D 105 1 28 HELIX 26 AC8 THR E 36 ASP E 50 1 15 HELIX 27 AC9 ASP E 77 CYS E 102 1 26 HELIX 28 AD1 ALA F 46 ALA F 64 1 19 HELIX 29 AD2 MET F 84 TRP F 102 1 19 HELIX 30 AD3 CYS F 112 GLU F 117 1 6 HELIX 31 AD4 GLY F 160 LYS F 171 1 12 HELIX 32 AD5 LEU F 206 SER F 211 1 6 HELIX 33 AD6 ASP F 230 GLU F 248 1 19 HELIX 34 AD7 GLY F 263 CYS F 267 5 5 HELIX 35 AD8 ASN F 268 SER F 276 1 9 HELIX 36 AD9 ASP F 296 ALA F 310 1 15 HELIX 37 AE1 ARG F 327 VAL F 331 5 5 SHEET 1 AA1 3 ILE A 5 GLY A 6 0 SHEET 2 AA1 3 GLY A 17 ARG A 20 -1 O GLY A 17 N GLY A 6 SHEET 3 AA1 3 VAL A 23 SER A 26 -1 O VAL A 23 N ARG A 20 SHEET 1 AA2 2 LYS A 13 GLY A 15 0 SHEET 2 AA2 2 ARG A 29 THR A 31 -1 O ALA A 30 N ILE A 14 SHEET 1 AA3 2 THR A 79 LYS A 80 0 SHEET 2 AA3 2 VAL A 109 ASN A 110 1 O VAL A 109 N LYS A 80 SHEET 1 AA4 5 TYR A 148 ILE A 150 0 SHEET 2 AA4 5 VAL A 140 TYR A 143 -1 N SER A 142 O ARG A 149 SHEET 3 AA4 5 VAL A 129 TYR A 132 -1 N VAL A 130 O ILE A 141 SHEET 4 AA4 5 GLU A 258 VAL A 262 1 O LEU A 260 N LEU A 131 SHEET 5 AA4 5 HIS A 285 PHE A 287 1 O PHE A 287 N LEU A 259 SHEET 1 AA5 2 VAL A 199 LYS A 200 0 SHEET 2 AA5 2 ASP A 203 VAL A 204 -1 O ASP A 203 N LYS A 200 SHEET 1 AA6 2 CYS B 43 TRP B 45 0 SHEET 2 AA6 2 ARG B 48 ALA B 50 -1 O ARG B 48 N TRP B 45 SHEET 1 AA7 2 ILE B 52 GLU B 54 0 SHEET 2 AA7 2 GLN B 103 ILE B 105 -1 O LEU B 104 N LYS B 53 SHEET 1 AA8 3 SER B 112 THR B 113 0 SHEET 2 AA8 3 ILE B 159 LEU B 161 -1 O LEU B 161 N SER B 112 SHEET 3 AA8 3 MET B 169 PHE B 171 -1 O THR B 170 N ILE B 160 SHEET 1 AA9 2 LEU B 149 ILE B 150 0 SHEET 2 AA9 2 SER B 178 GLN B 179 -1 O SER B 178 N ILE B 150 SHEET 1 AB1 4 HIS C 5 GLU C 8 0 SHEET 2 AB1 4 THR C 21 LYS C 28 -1 O VAL C 24 N HIS C 5 SHEET 3 AB1 4 ALA C 111 ILE C 116 -1 O ALA C 114 N CYS C 25 SHEET 4 AB1 4 LEU C 49 ARG C 51 -1 N ILE C 50 O ILE C 113 SHEET 1 AB2 3 HIS C 5 GLU C 8 0 SHEET 2 AB2 3 THR C 21 LYS C 28 -1 O VAL C 24 N HIS C 5 SHEET 3 AB2 3 PRO C 136 VAL C 137 -1 O VAL C 137 N LEU C 26 SHEET 1 AB3 2 SER D 27 ALA D 28 0 SHEET 2 AB3 2 ILE D 73 GLU D 74 -1 O ILE D 73 N ALA D 28 SHEET 1 AB4 2 VAL D 30 ARG D 31 0 SHEET 2 AB4 2 SER E 27 ALA E 28 -1 O SER E 27 N ARG D 31 SHEET 1 AB5 3 VAL E 30 SER E 33 0 SHEET 2 AB5 3 PHE E 68 LYS E 72 -1 O VAL E 69 N LEU E 32 SHEET 3 AB5 3 GLU E 61 SER E 64 -1 N GLU E 61 O LYS E 72 SHEET 1 AB6 3 VAL F 23 SER F 26 0 SHEET 2 AB6 3 LYS F 13 ARG F 20 -1 N ARG F 20 O VAL F 23 SHEET 3 AB6 3 ARG F 29 THR F 31 -1 O ALA F 30 N ILE F 14 SHEET 1 AB7 4 VAL F 23 SER F 26 0 SHEET 2 AB7 4 LYS F 13 ARG F 20 -1 N ARG F 20 O VAL F 23 SHEET 3 AB7 4 ILE F 5 GLU F 8 -1 N GLU F 8 O GLY F 15 SHEET 4 AB7 4 ILE F 76 TYR F 78 1 O ALA F 77 N ILE F 5 SHEET 1 AB8 3 THR F 138 ILE F 141 0 SHEET 2 AB8 3 VAL F 130 VAL F 133 -1 N VAL F 130 O ILE F 141 SHEET 3 AB8 3 LEU F 260 VAL F 262 1 O LEU F 260 N LEU F 131 LINK OG SER A 134 K K A 401 1555 1555 3.25 LINK OD2 ASP A 296 K K A 401 1555 1555 2.75 LINK OD2 ASP F 296 K K F 401 1555 1555 3.02 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 99210137 CONECT 223610137 CONECT 817310138 CONECT10137 992 2236 CONECT10138 8173 MASTER 434 0 2 37 47 0 0 610131 7 5 112 END