HEADER TRANSFERASE 12-MAY-25 9UW4 TITLE THE COMPLEX OF HUMAN PMEK1 AND UERK1 (ANP)(FROM PY204ERK1) COMPND MOL_ID: 1; COMPND 2 MOLECULE: MITOGEN-ACTIVATED PROTEIN KINASE 3; COMPND 3 CHAIN: B; COMPND 4 SYNONYM: MAP KINASE 3,MAPK 3,ERT2,EXTRACELLULAR SIGNAL-REGULATED COMPND 5 KINASE 1,ERK-1,INSULIN-STIMULATED MAP2 KINASE,MAP KINASE ISOFORM P44, COMPND 6 P44-MAPK,MICROTUBULE-ASSOCIATED PROTEIN 2 KINASE,P44-ERK1; COMPND 7 EC: 2.7.11.24; COMPND 8 ENGINEERED: YES; COMPND 9 OTHER_DETAILS: RECOMBINANT HUMAN ERK1 WITH ADDITIONAL C-TERMINAL HIS- COMPND 10 TAG EXPRESSED IN E. COLI; COMPND 11 MOL_ID: 2; COMPND 12 MOLECULE: DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 1; COMPND 13 CHAIN: A; COMPND 14 SYNONYM: MAP KINASE KINASE 1,MAPKK 1,MKK1,ERK ACTIVATOR KINASE 1, COMPND 15 MAPK/ERK KINASE 1,MEK 1; COMPND 16 EC: 2.7.12.2; COMPND 17 ENGINEERED: YES; COMPND 18 OTHER_DETAILS: RECOMBINANT HUMAN MEK1 WITH ADDITIONAL C-TERMINAL HIS- COMPND 19 TAG EXPRESSED IN E. COLI, WITH PHOSPHORYLATION SITES ON S218 AND COMPND 20 S222. SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: MAPK3, ERK1, PRKM3; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 MOL_ID: 2; SOURCE 9 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 10 ORGANISM_COMMON: HUMAN; SOURCE 11 ORGANISM_TAXID: 9606; SOURCE 12 GENE: MAP2K1, MEK1, PRKMK1; SOURCE 13 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 14 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS MEK1. ERK1, COMPLEX, KINASE, MAPK PATHWAY, TRANSFERASE EXPDTA ELECTRON MICROSCOPY AUTHOR C.PENG,Y.SUN,S.LIU,F.ZHOU,Q.HU REVDAT 1 01-APR-26 9UW4 0 JRNL AUTH Y.SUN,C.PENG,S.LIU,F.ZHOU,G.HUANG,J.WANG,Q.HU JRNL TITL MECHANISTIC INSIGHT INTO THE PHOSPHORYLATION OF ERK BY MEK JRNL REF BIORXIV 2026 JRNL REFN ISSN 2692-8205 JRNL DOI 10.64898/2026.03.13.710243 REMARK 2 REMARK 2 RESOLUTION. 3.20 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : COOT, UCSF CHIMERAX, PHENIX, PHENIX, REMARK 3 COOT, UCSF CHIMERAX 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) : 3.200 REMARK 3 NUMBER OF PARTICLES : 235273 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 9UW4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 18-MAY-25. REMARK 100 THE DEPOSITION ID IS D_1300059355. 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 : THE COMPLEX OF HUMAN PMEK1 AND REMARK 245 UERK1 (FROM PY204) AT THE REMARK 245 PRESENCE OF AMPPNP 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 : 7.40 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 (6K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1100.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1800.00 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) : 5000.00 REMARK 245 ILLUMINATION MODE : SPOT SCAN REMARK 245 NOMINAL MAGNIFICATION : NULL 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 APPLY THE FOLLOWING TO CHAINS: B, A 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 HIS B 0 REMARK 465 MET B 1 REMARK 465 ALA B 2 REMARK 465 ALA B 3 REMARK 465 ALA B 4 REMARK 465 ALA B 5 REMARK 465 ALA B 6 REMARK 465 GLN B 7 REMARK 465 GLY B 8 REMARK 465 GLY B 9 REMARK 465 GLY B 10 REMARK 465 GLY B 11 REMARK 465 GLY B 12 REMARK 465 GLU B 13 REMARK 465 PRO B 14 REMARK 465 ARG B 15 REMARK 465 ARG B 16 REMARK 465 THR B 17 REMARK 465 GLU B 18 REMARK 465 GLY B 19 REMARK 465 VAL B 20 REMARK 465 GLY B 21 REMARK 465 PRO B 22 REMARK 465 GLY B 23 REMARK 465 VAL B 24 REMARK 465 PRO B 25 REMARK 465 GLY B 26 REMARK 465 GLU B 27 REMARK 465 VAL B 28 REMARK 465 VAL B 375 REMARK 465 LEU B 376 REMARK 465 GLU B 377 REMARK 465 ALA B 378 REMARK 465 PRO B 379 REMARK 465 LEU B 380 REMARK 465 GLU B 381 REMARK 465 HIS B 382 REMARK 465 HIS B 383 REMARK 465 HIS B 384 REMARK 465 HIS B 385 REMARK 465 HIS B 386 REMARK 465 HIS B 387 REMARK 465 MET A 1 REMARK 465 PRO A 13 REMARK 465 ALA A 14 REMARK 465 PRO A 15 REMARK 465 ASP A 16 REMARK 465 GLY A 17 REMARK 465 SER A 18 REMARK 465 ALA A 19 REMARK 465 VAL A 20 REMARK 465 ASN A 21 REMARK 465 GLY A 22 REMARK 465 THR A 23 REMARK 465 SER A 24 REMARK 465 SER A 25 REMARK 465 ALA A 26 REMARK 465 GLU A 27 REMARK 465 THR A 28 REMARK 465 ASN A 29 REMARK 465 LEU A 30 REMARK 465 GLU A 31 REMARK 465 GLU A 41 REMARK 465 LEU A 42 REMARK 465 ASP A 43 REMARK 465 GLU A 44 REMARK 465 GLN A 45 REMARK 465 GLN A 46 REMARK 465 ARG A 47 REMARK 465 LYS A 48 REMARK 465 ARG A 49 REMARK 465 LEU A 50 REMARK 465 GLU A 51 REMARK 465 ALA A 52 REMARK 465 PHE A 53 REMARK 465 LEU A 54 REMARK 465 THR A 55 REMARK 465 GLN A 56 REMARK 465 LYS A 57 REMARK 465 GLN A 58 REMARK 465 LYS A 59 REMARK 465 GLY A 276 REMARK 465 CYS A 277 REMARK 465 GLN A 278 REMARK 465 VAL A 279 REMARK 465 GLU A 280 REMARK 465 GLY A 281 REMARK 465 ASP A 282 REMARK 465 ALA A 283 REMARK 465 ALA A 284 REMARK 465 GLU A 285 REMARK 465 THR A 286 REMARK 465 PRO A 287 REMARK 465 PRO A 288 REMARK 465 ARG A 289 REMARK 465 PRO A 290 REMARK 465 ARG A 291 REMARK 465 THR A 292 REMARK 465 PRO A 293 REMARK 465 GLY A 294 REMARK 465 ARG A 295 REMARK 465 PRO A 296 REMARK 465 LEU A 297 REMARK 465 SER A 298 REMARK 465 SER A 299 REMARK 465 TYR A 300 REMARK 465 GLY A 301 REMARK 465 MET A 302 REMARK 465 ASP A 303 REMARK 465 SER A 304 REMARK 465 ARG A 305 REMARK 465 CYS A 376 REMARK 465 SER A 377 REMARK 465 THR A 378 REMARK 465 ILE A 379 REMARK 465 GLY A 380 REMARK 465 LEU A 381 REMARK 465 ASN A 382 REMARK 465 GLN A 383 REMARK 465 PRO A 384 REMARK 465 SER A 385 REMARK 465 THR A 386 REMARK 465 PRO A 387 REMARK 465 THR A 388 REMARK 465 HIS A 389 REMARK 465 ALA A 390 REMARK 465 ALA A 391 REMARK 465 GLY A 392 REMARK 465 VAL A 393 REMARK 465 LEU A 394 REMARK 465 GLU A 395 REMARK 465 HIS A 396 REMARK 465 HIS A 397 REMARK 465 HIS A 398 REMARK 465 HIS A 399 REMARK 465 HIS A 400 REMARK 465 HIS A 401 REMARK 465 HIS A 402 REMARK 465 HIS A 403 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 LEU A 33 CG CD1 CD2 REMARK 470 GLN A 34 CG CD OE1 NE2 REMARK 470 LYS A 35 CG CD CE NZ REMARK 470 LYS A 36 CG CD CE NZ REMARK 470 LEU A 37 CG CD1 CD2 REMARK 470 GLU A 38 CG CD OE1 OE2 REMARK 470 GLU A 39 CG CD OE1 OE2 REMARK 470 LEU A 40 CG CD1 CD2 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 LYS B 32 42.63 -141.71 REMARK 500 PHE B 36 86.58 -65.25 REMARK 500 ILE B 48 -51.96 -123.65 REMARK 500 TYR B 53 53.64 39.01 REMARK 500 VAL B 63 -60.87 -102.40 REMARK 500 PRO B 75 53.14 -92.17 REMARK 500 LYS B 134 -5.68 -143.11 REMARK 500 GLU B 194 -165.91 -77.78 REMARK 500 HIS B 197 51.88 -93.43 REMARK 500 PRO B 297 47.56 -83.94 REMARK 500 PRO B 315 42.61 -81.21 REMARK 500 PRO B 328 46.14 -78.52 REMARK 500 LEU B 330 49.36 -92.53 REMARK 500 GLU B 344 70.10 37.87 REMARK 500 ALA B 349 -8.67 70.72 REMARK 500 ASP B 353 94.37 -69.38 REMARK 500 ASP B 354 24.14 -140.04 REMARK 500 ALA B 369 79.63 -119.42 REMARK 500 LYS A 5 75.38 53.36 REMARK 500 GLN A 34 -76.03 67.71 REMARK 500 GLU A 38 -168.76 -160.74 REMARK 500 ARG A 189 -2.91 67.57 REMARK 500 ASP A 208 63.02 62.78 REMARK 500 PHE A 223 73.68 -112.96 REMARK 500 TYR A 229 35.31 -98.04 REMARK 500 LEU A 342 77.19 -100.50 REMARK 500 ALA A 366 51.79 -91.13 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 MG B 401 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASN B 171 OD1 REMARK 620 2 ASP B 184 OD2 123.0 REMARK 620 3 ANP B 402 O2B 115.4 85.4 REMARK 620 4 ANP B 402 O3A 151.2 85.6 65.5 REMARK 620 N 1 2 3 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-64545 RELATED DB: EMDB REMARK 900 THE COMPLEX OF HUMAN PMEK1 AND UERK1 (ANP)(FROM PY204ERK1) DBREF 9UW4 B 1 379 UNP P27361 MK03_HUMAN 1 379 DBREF 9UW4 A 1 393 UNP Q02750 MP2K1_HUMAN 1 393 SEQADV 9UW4 HIS B 0 UNP P27361 EXPRESSION TAG SEQADV 9UW4 LEU B 380 UNP P27361 EXPRESSION TAG SEQADV 9UW4 GLU B 381 UNP P27361 EXPRESSION TAG SEQADV 9UW4 HIS B 382 UNP P27361 EXPRESSION TAG SEQADV 9UW4 HIS B 383 UNP P27361 EXPRESSION TAG SEQADV 9UW4 HIS B 384 UNP P27361 EXPRESSION TAG SEQADV 9UW4 HIS B 385 UNP P27361 EXPRESSION TAG SEQADV 9UW4 HIS B 386 UNP P27361 EXPRESSION TAG SEQADV 9UW4 HIS B 387 UNP P27361 EXPRESSION TAG SEQADV 9UW4 LEU A 394 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 GLU A 395 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 396 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 397 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 398 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 399 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 400 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 401 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 402 UNP Q02750 EXPRESSION TAG SEQADV 9UW4 HIS A 403 UNP Q02750 EXPRESSION TAG SEQRES 1 B 388 HIS MET ALA ALA ALA ALA ALA GLN GLY GLY GLY GLY GLY SEQRES 2 B 388 GLU PRO ARG ARG THR GLU GLY VAL GLY PRO GLY VAL PRO SEQRES 3 B 388 GLY GLU VAL GLU MET VAL LYS GLY GLN PRO PHE ASP VAL SEQRES 4 B 388 GLY PRO ARG TYR THR GLN LEU GLN TYR ILE GLY GLU GLY SEQRES 5 B 388 ALA TYR GLY MET VAL SER SER ALA TYR ASP HIS VAL ARG SEQRES 6 B 388 LYS THR ARG VAL ALA ILE LYS LYS ILE SER PRO PHE GLU SEQRES 7 B 388 HIS GLN THR TYR CYS GLN ARG THR LEU ARG GLU ILE GLN SEQRES 8 B 388 ILE LEU LEU ARG PHE ARG HIS GLU ASN VAL ILE GLY ILE SEQRES 9 B 388 ARG ASP ILE LEU ARG ALA SER THR LEU GLU ALA MET ARG SEQRES 10 B 388 ASP VAL TYR ILE VAL GLN ASP LEU MET GLU THR ASP LEU SEQRES 11 B 388 TYR LYS LEU LEU LYS SER GLN GLN LEU SER ASN ASP HIS SEQRES 12 B 388 ILE CYS TYR PHE LEU TYR GLN ILE LEU ARG GLY LEU LYS SEQRES 13 B 388 TYR ILE HIS SER ALA ASN VAL LEU HIS ARG ASP LEU LYS SEQRES 14 B 388 PRO SER ASN LEU LEU ILE ASN THR THR CYS ASP LEU LYS SEQRES 15 B 388 ILE CYS ASP PHE GLY LEU ALA ARG ILE ALA ASP PRO GLU SEQRES 16 B 388 HIS ASP HIS THR GLY PHE LEU THR GLU TYR VAL ALA THR SEQRES 17 B 388 ARG TRP TYR ARG ALA PRO GLU ILE MET LEU ASN SER LYS SEQRES 18 B 388 GLY TYR THR LYS SER ILE ASP ILE TRP SER VAL GLY CYS SEQRES 19 B 388 ILE LEU ALA GLU MET LEU SER ASN ARG PRO ILE PHE PRO SEQRES 20 B 388 GLY LYS HIS TYR LEU ASP GLN LEU ASN HIS ILE LEU GLY SEQRES 21 B 388 ILE LEU GLY SER PRO SER GLN GLU ASP LEU ASN CYS ILE SEQRES 22 B 388 ILE ASN MET LYS ALA ARG ASN TYR LEU GLN SER LEU PRO SEQRES 23 B 388 SER LYS THR LYS VAL ALA TRP ALA LYS LEU PHE PRO LYS SEQRES 24 B 388 SER ASP SER LYS ALA LEU ASP LEU LEU ASP ARG MET LEU SEQRES 25 B 388 THR PHE ASN PRO ASN LYS ARG ILE THR VAL GLU GLU ALA SEQRES 26 B 388 LEU ALA HIS PRO TYR LEU GLU GLN TYR TYR ASP PRO THR SEQRES 27 B 388 ASP GLU PRO VAL ALA GLU GLU PRO PHE THR PHE ALA MET SEQRES 28 B 388 GLU LEU ASP ASP LEU PRO LYS GLU ARG LEU LYS GLU LEU SEQRES 29 B 388 ILE PHE GLN GLU THR ALA ARG PHE GLN PRO GLY VAL LEU SEQRES 30 B 388 GLU ALA PRO LEU GLU HIS HIS HIS HIS HIS HIS SEQRES 1 A 403 MET PRO LYS LYS LYS PRO THR PRO ILE GLN LEU ASN PRO SEQRES 2 A 403 ALA PRO ASP GLY SER ALA VAL ASN GLY THR SER SER ALA SEQRES 3 A 403 GLU THR ASN LEU GLU ALA LEU GLN LYS LYS LEU GLU GLU SEQRES 4 A 403 LEU GLU LEU ASP GLU GLN GLN ARG LYS ARG LEU GLU ALA SEQRES 5 A 403 PHE LEU THR GLN LYS GLN LYS VAL GLY GLU LEU LYS ASP SEQRES 6 A 403 ASP ASP PHE GLU LYS ILE SER GLU LEU GLY ALA GLY ASN SEQRES 7 A 403 GLY GLY VAL VAL PHE LYS VAL SER HIS LYS PRO SER GLY SEQRES 8 A 403 LEU VAL MET ALA ARG LYS LEU ILE HIS LEU GLU ILE LYS SEQRES 9 A 403 PRO ALA ILE ARG ASN GLN ILE ILE ARG GLU LEU GLN VAL SEQRES 10 A 403 LEU HIS GLU CYS ASN SER PRO TYR ILE VAL GLY PHE TYR SEQRES 11 A 403 GLY ALA PHE TYR SER ASP GLY GLU ILE SER ILE CYS MET SEQRES 12 A 403 GLU HIS MET ASP GLY GLY SER LEU ASP GLN VAL LEU LYS SEQRES 13 A 403 LYS ALA GLY ARG ILE PRO GLU GLN ILE LEU GLY LYS VAL SEQRES 14 A 403 SER ILE ALA VAL ILE LYS GLY LEU THR TYR LEU ARG GLU SEQRES 15 A 403 LYS HIS LYS ILE MET HIS ARG ASP VAL LYS PRO SER ASN SEQRES 16 A 403 ILE LEU VAL ASN SER ARG GLY GLU ILE LYS LEU CYS ASP SEQRES 17 A 403 PHE GLY VAL SER GLY GLN LEU ILE ASP SEP MET ALA ASN SEQRES 18 A 403 SEP PHE VAL GLY THR ARG SER TYR MET SER PRO GLU ARG SEQRES 19 A 403 LEU GLN GLY THR HIS TYR SER VAL GLN SER ASP ILE TRP SEQRES 20 A 403 SER MET GLY LEU SER LEU VAL GLU MET ALA VAL GLY ARG SEQRES 21 A 403 TYR PRO ILE PRO PRO PRO ASP ALA LYS GLU LEU GLU LEU SEQRES 22 A 403 MET PHE GLY CYS GLN VAL GLU GLY ASP ALA ALA GLU THR SEQRES 23 A 403 PRO PRO ARG PRO ARG THR PRO GLY ARG PRO LEU SER SER SEQRES 24 A 403 TYR GLY MET ASP SER ARG PRO PRO MET ALA ILE PHE GLU SEQRES 25 A 403 LEU LEU ASP TYR ILE VAL ASN GLU PRO PRO PRO LYS LEU SEQRES 26 A 403 PRO SER GLY VAL PHE SER LEU GLU PHE GLN ASP PHE VAL SEQRES 27 A 403 ASN LYS CYS LEU ILE LYS ASN PRO ALA GLU ARG ALA ASP SEQRES 28 A 403 LEU LYS GLN LEU MET VAL HIS ALA PHE ILE LYS ARG SER SEQRES 29 A 403 ASP ALA GLU GLU VAL ASP PHE ALA GLY TRP LEU CYS SER SEQRES 30 A 403 THR ILE GLY LEU ASN GLN PRO SER THR PRO THR HIS ALA SEQRES 31 A 403 ALA GLY VAL LEU GLU HIS HIS HIS HIS HIS HIS HIS HIS MODRES 9UW4 SEP A 218 SER MODIFIED RESIDUE MODRES 9UW4 SEP A 222 SER MODIFIED RESIDUE HET SEP A 218 10 HET SEP A 222 10 HET MG B 401 1 HET ANP B 402 31 HET ANP A 501 31 HETNAM SEP PHOSPHOSERINE HETNAM MG MAGNESIUM ION HETNAM ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER HETSYN SEP PHOSPHONOSERINE FORMUL 2 SEP 2(C3 H8 N O6 P) FORMUL 3 MG MG 2+ FORMUL 4 ANP 2(C10 H17 N6 O12 P3) HELIX 1 AA1 HIS B 78 LEU B 93 1 16 HELIX 2 AA2 LEU B 129 LEU B 133 1 5 HELIX 3 AA3 SER B 139 ALA B 160 1 22 HELIX 4 AA4 SER B 225 ASN B 241 1 17 HELIX 5 AA5 HIS B 249 GLY B 262 1 14 HELIX 6 AA6 SER B 265 ASN B 270 1 6 HELIX 7 AA7 ASN B 274 LEU B 284 1 11 HELIX 8 AA8 ALA B 291 PHE B 296 1 6 HELIX 9 AA9 ASP B 300 LEU B 311 1 12 HELIX 10 AB1 THR B 320 LEU B 325 1 6 HELIX 11 AB2 ASP B 335 GLU B 339 5 5 HELIX 12 AB3 PRO B 356 THR B 368 1 13 HELIX 13 AB4 LYS A 104 HIS A 119 1 16 HELIX 14 AB5 SER A 150 ALA A 158 1 9 HELIX 15 AB6 PRO A 162 HIS A 184 1 23 HELIX 16 AB7 LYS A 192 SER A 194 5 3 HELIX 17 AB8 SER A 231 GLN A 236 1 6 HELIX 18 AB9 VAL A 242 GLY A 259 1 18 HELIX 19 AC1 ASP A 267 MET A 274 1 8 HELIX 20 AC2 ALA A 309 ASN A 319 1 11 HELIX 21 AC3 SER A 331 LEU A 342 1 12 HELIX 22 AC4 ASP A 351 VAL A 357 1 7 HELIX 23 AC5 HIS A 358 ALA A 366 1 9 HELIX 24 AC6 ASP A 370 LEU A 375 1 6 SHEET 1 AA1 5 TYR B 42 TYR B 47 0 SHEET 2 AA1 5 SER B 57 ASP B 61 -1 O TYR B 60 N THR B 43 SHEET 3 AA1 5 ARG B 67 ILE B 73 -1 O ILE B 70 N SER B 57 SHEET 4 AA1 5 VAL B 118 GLN B 122 -1 O VAL B 118 N ILE B 73 SHEET 5 AA1 5 ASP B 105 LEU B 107 -1 N ASP B 105 O VAL B 121 SHEET 1 AA2 3 THR B 127 ASP B 128 0 SHEET 2 AA2 3 LEU B 172 ILE B 174 -1 O ILE B 174 N THR B 127 SHEET 3 AA2 3 LEU B 180 ILE B 182 -1 O LYS B 181 N LEU B 173 SHEET 1 AA3 5 LYS A 70 ALA A 76 0 SHEET 2 AA3 5 VAL A 81 VAL A 85 -1 O LYS A 84 N ILE A 71 SHEET 3 AA3 5 MET A 94 HIS A 100 -1 O ARG A 96 N PHE A 83 SHEET 4 AA3 5 GLU A 138 GLU A 144 -1 O ILE A 141 N LYS A 97 SHEET 5 AA3 5 PHE A 129 SER A 135 -1 N TYR A 130 O CYS A 142 SHEET 1 AA4 2 ILE A 186 MET A 187 0 SHEET 2 AA4 2 GLY A 213 GLN A 214 -1 O GLY A 213 N MET A 187 SHEET 1 AA5 2 ILE A 196 VAL A 198 0 SHEET 2 AA5 2 ILE A 204 LEU A 206 -1 O LYS A 205 N LEU A 197 LINK C ASP A 217 N SEP A 218 1555 1555 1.31 LINK C SEP A 218 N MET A 219 1555 1555 1.31 LINK C ASN A 221 N SEP A 222 1555 1555 1.32 LINK C SEP A 222 N PHE A 223 1555 1555 1.30 LINK OD1 ASN B 171 MG MG B 401 1555 1555 2.07 LINK OD2 ASP B 184 MG MG B 401 1555 1555 2.04 LINK MG MG B 401 O2B ANP B 402 1555 1555 2.00 LINK MG MG B 401 O3A ANP B 402 1555 1555 2.46 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 1183 5209 CONECT 1283 5209 CONECT 4177 4183 CONECT 4183 4177 4184 CONECT 4184 4183 4185 4187 CONECT 4185 4184 4186 CONECT 4186 4185 4189 CONECT 4187 4184 4188 4193 CONECT 4188 4187 CONECT 4189 4186 4190 4191 4192 CONECT 4190 4189 CONECT 4191 4189 CONECT 4192 4189 CONECT 4193 4187 CONECT 4208 4214 CONECT 4214 4208 4215 CONECT 4215 4214 4216 4218 CONECT 4216 4215 4217 CONECT 4217 4216 4220 CONECT 4218 4215 4219 4224 CONECT 4219 4218 CONECT 4220 4217 4221 4222 4223 CONECT 4221 4220 CONECT 4222 4220 CONECT 4223 4220 CONECT 4224 4218 CONECT 5209 1183 1283 5216 5221 CONECT 5210 5211 5212 5213 5217 CONECT 5211 5210 CONECT 5212 5210 CONECT 5213 5210 CONECT 5214 5215 5216 5217 5221 CONECT 5215 5214 CONECT 5216 5209 5214 CONECT 5217 5210 5214 CONECT 5218 5219 5220 5221 5222 CONECT 5219 5218 CONECT 5220 5218 CONECT 5221 5209 5214 5218 CONECT 5222 5218 5223 CONECT 5223 5222 5224 CONECT 5224 5223 5225 5226 CONECT 5225 5224 5230 CONECT 5226 5224 5227 5228 CONECT 5227 5226 CONECT 5228 5226 5229 5230 CONECT 5229 5228 CONECT 5230 5225 5228 5231 CONECT 5231 5230 5232 5240 CONECT 5232 5231 5233 CONECT 5233 5232 5234 CONECT 5234 5233 5235 5240 CONECT 5235 5234 5236 5237 CONECT 5236 5235 CONECT 5237 5235 5238 CONECT 5238 5237 5239 CONECT 5239 5238 5240 CONECT 5240 5231 5234 5239 CONECT 5241 5242 5243 5244 5248 CONECT 5242 5241 CONECT 5243 5241 CONECT 5244 5241 CONECT 5245 5246 5247 5248 5252 CONECT 5246 5245 CONECT 5247 5245 CONECT 5248 5241 5245 CONECT 5249 5250 5251 5252 5253 CONECT 5250 5249 CONECT 5251 5249 CONECT 5252 5245 5249 CONECT 5253 5249 5254 CONECT 5254 5253 5255 CONECT 5255 5254 5256 5257 CONECT 5256 5255 5261 CONECT 5257 5255 5258 5259 CONECT 5258 5257 CONECT 5259 5257 5260 5261 CONECT 5260 5259 CONECT 5261 5256 5259 5262 CONECT 5262 5261 5263 5271 CONECT 5263 5262 5264 CONECT 5264 5263 5265 CONECT 5265 5264 5266 5271 CONECT 5266 5265 5267 5268 CONECT 5267 5266 CONECT 5268 5266 5269 CONECT 5269 5268 5270 CONECT 5270 5269 5271 CONECT 5271 5262 5265 5270 MASTER 317 0 5 24 17 0 0 6 5269 2 89 61 END